CN102621408A - Test system and test method of general converter product - Google Patents
Test system and test method of general converter product Download PDFInfo
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- CN102621408A CN102621408A CN2011103197164A CN201110319716A CN102621408A CN 102621408 A CN102621408 A CN 102621408A CN 2011103197164 A CN2011103197164 A CN 2011103197164A CN 201110319716 A CN201110319716 A CN 201110319716A CN 102621408 A CN102621408 A CN 102621408A
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Abstract
The invention discloses a test system and a test method of a general converter product. The test system comprises a test main circuit unit, a signal transmission unit and an upper computer unit, wherein the upper computer unit comprises a programmable logic controller and a touch screen, the test main circuit unit adopts a back-to-back structure, the test system has generality, is based on fully-controlled power electronic devices and energy bidirectional flow and can be used as the general test systems of an offshore wind power flexible direct current transmission converter, a static var generator, a four-quadrant frequency control device, an active power filter, a new-energy synchronization device, etc., the speed of research and development of the converter product is speeded up, the development period is shortened, the cost is saved, the function switching of the tested converter product can be realized by the programmable logic controller and the touch screen, the operation is convenient, and the human-computer interface is friendly.
Description
Technical field
The present invention relates to electronic power convertor test field, relate in particular to a kind of pilot system and method for general convertor product.
Background technology
Continuous development along with power electronics; Current transformer technical application scope based on full control power electronic devices such as insulated gate bipolar transistors (IGBT) constantly enlarges; It is mainly used in motor-driven, reactive-load compensation, active power filtering, new forms of energy are incorporated into the power networks and the offshore wind power flexible DC power transmission field; In above-mentioned various application, though control algolithm is almost completely different, circuit structure is more or less the same; All be based on the three-phase bridge structure in the major applications, comprise parts such as detection, protection, driving.
Retrieval through to prior art is found; " Implementation and Control of Distributed PWM Cascaded Multilevel Inverters With Minimal Harmonic Distortion and Common-Mode Voltage " (" realization and control with cascade connection multi-level width modulation (PWM) transmission system of minimum harmonic wave and common mode voltage ") that people such as Poh Chiang Loh deliver on IEEE TRANSACTIONS ON POWER ELECTRONIC periodical has designed a kind of width modulation (PWM) current transformer of many level; Its microprocessor with a kind of uniqueness (DSP) is a core; Main circuit, testing circuit, trigger circuit and control method are integrated in one, can accomplish the checking that multilevel system is triggered algorithm.But the pilot system of this current transformer product exists following not enough for the exploitation and the test of actual product:
1) only is directed against single controlled target and system design in this Testing System Design scheme, lacks versatility, can not contain the exploitation of various current transformer series products;
2) this pilot system main circuit partly adopts Y-connection, does not have the public direct-current side, and transmission brings certain difficulty to active power;
3) only for it triggers the proof of algorithm design, capacity is less for pilot system, makes pilot system have certain difficulty to the conversion of actual product;
4) main circuit is the cascade connection multi-level structure, is applicable to the high-power system design, and for the middle low power system, this structure is too complicated, and system cost is too high.
The main circuit topological structure of this experimental system is too complicated, is not suitable for the middle low power system and uses, and lacks versatility, can not as multiple current transformer product design and development and with the general-purpose platform of performance test.
Summary of the invention
To above-mentioned technical matters, the object of the present invention is to provide a kind of pilot system and method for general convertor product, the proof of algorithm and the experimental prototype exploitation of system such as be incorporated into the power networks of offshore wind power flexible DC power transmission current transformer, static reacance generator, four-quadrant frequency variation speed regulating device, Active Power Filter-APF, new forms of energy all can be accomplished on this pilot system; Has versatility; Not only avoid design iterations, shortened the construction cycle, saved R&D costs; And it is easy to operate, safe and reliable.
For achieving the above object, the present invention realizes through following technical scheme:
A kind of pilot system of general convertor product, it comprises: test main circuit unit, signal transmission unit and host computer unit, said test main circuit unit is used to test the correlation parameter of current transformer product, and imports the related experiment data into the host computer unit; Said host computer unit is connected with the test main circuit unit through signal transmission unit, and be used for control and test main circuit unit, and the related data of the current transformer product that imports into from signal transmission unit of processing.
Special, said test main circuit unit comprises first circuit unit and second circuit unit, said first circuit unit and second circuit unit are used for the correlation parameter of current transformer product is made an experiment, and import the related experiment data into the host computer unit.
Special, said first circuit unit comprises: the first pressure regulator unit is connected with electrical network or load, is used to regulate the input voltage of pilot system;
The first I/O control module is used to switch on or off and being connected of the first pressure regulator unit, and will switch on or off information feedback and give the host computer unit;
First voltage detection unit is connected with the first pressure regulator unit through the first I/O control module, is used to detect alternating voltage;
The first isolating transformer unit is used for as the converter cell isolating transformer when connecting that is incorporated into the power networks, and said host computer unit is controlled the first isolating transformer unit according to pilot system operation needs and whether inserted pilot system;
First reactor unit is used for as filtering of pilot system input current and converter cell direct current press pump liter, and said host computer unit is controlled first reactor unit according to pilot system operation needs and whether inserted pilot system;
First current detecting unit is used to detect the electric current of converter cell, and said host computer unit controls according to the needs of pilot system that first current detecting unit is connected with first reactor unit or first voltage detection unit connects;
First converter cell is connected with first current detecting unit, is used to control the pilot system operation and handles current transformer product correlation test data;
The direct current linkage unit is connected with converter cell, and said host computer unit is selected whether the direct current linkage unit to be inserted pilot system according to the needs of the current transformer product of test.
Special, said second circuit unit comprises: the second pressure regulator unit, the second I/O control module, second voltage detection unit, the second isolating transformer unit, second reactor unit, second current detecting unit and second converter cell.
Special; The connected mode of the said second pressure regulator unit, the second I/O control module, second voltage detection unit, the second isolating transformer unit, second reactor unit, second current detecting unit and second converter cell and order are identical with unit of the same race in first circuit unit, and said second converter cell connects the direct current linkage unit other end.
Special, said first converter cell and second converter cell include governor circuit, power circuit, driving circuit, signal conditioning circuit.
Special; Said governor circuit is a core with microprocessor (DSP); First current detecting unit corresponding with second converter cell with host computer unit, driving circuit, signal conditioning circuit and first converter cell is connected with second current detecting unit; And carry out control signal exchange with the host computer unit, and the start pulse signal that said microprocessor generates after with computing is passed to each switching device of driving circuit control, and driving circuit is sent overvoltage, short trouble signal back to governor circuit.Said first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit are delivered to governor circuit with the operating electric current of pilot system, information of voltage and are carried out computing, the operation of control pilot system.
Special, said power circuit is two level fully controlled bridges, and it comprises AC side and DC side, and said AC side connects first reactor unit or second reactor unit, and said DC side connects an end of direct current linkage unit; Said signal conditioning circuit is connected with governor circuit, is used for the pilot system parameter that first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit obtain is carried out filtering and conversion process.
Special; Said host computer unit is used to gather the state of the data and the monitoring test system of whole test system; It comprises Programmable Logic Controller (PLC) and touch-screen; Said Programmable Logic Controller is connected with the governor circuit of first converter cell and second converter cell, and said touch-screen is connected with Programmable Logic Controller, is used for the operation information and the command signal of transmission test system.
Special, said signal transmission unit is a terminal row, is used to connect the current transformer product of different structure, outside input wires and checkout equipment.
The invention also discloses a kind of test method of general convertor product, said method comprises the steps:
S1, host computer unit make an experiment to the correlation parameter of test main circuit unit transmission dependent instruction control test main circuit unit to the current transformer product;
S2, test main circuit unit receive the relevant steering order that the host computer unit sends; And current transformer product correlation parameter is made an experiment, and import the related experiment data into the host computer unit through signal transmission unit based on full control power electronic devices and energy two-way flow;
S3, host computer unit receive and handle the correlation test data of importing the current transformer product that imports into the unit from signal into, and show the test findings of current transformer product.
Special; Said step S1 specifically comprises: touch-screen sends steering order; Steering order is imported the Programmable Logic Controller of host computer unit into; Programmable Logic Controller transmits control signal to the bypass contactor of bypass contactor, first reactor unit and second reactor unit of the first I/O control module, the second I/O control module, the first isolating transformer unit and the second isolating transformer unit, the D.C. contactor of direct current linkage unit; Simultaneously, import steering order into the governor circuit of first converter cell and the governor circuit of second converter cell through translation interface.
Special; Said step S2 specifically comprises: the governor circuit of the governor circuit of first converter cell and second converter cell receives the steering order that the host computer unit sends; The microprocessor of said governor circuit sends to first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit with steering order, and said first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit make an experiment according to the correlation parameter of the steering order of receiving to the current transformer product.
Special; Said step S2 also comprises: the start pulse signal that the microprocessor of said governor circuit generates after with computing is passed to each switching device of driving circuit control; Said driving circuit receives the start pulse signal that governor circuit sends; And with pulse signal carry out photoelectricity isolate with the power amplification processing after import power circuit into, said driving circuit is sent overvoltage, short trouble signal back to governor circuit; Said signal conditioning circuit carries out filtering and conversion process with the pilot system parameter that first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit obtain, and the data after the processing are delivered to governor circuit and carried out computing.
Special; Said step S3 specifically comprises: the microprocessor of said governor circuit is handled the back is imported the host computer unit into through translation interface Programmable Logic Controller to current transformer product testing data; Import the touch-screen of host computer unit after said Programmable Logic Controller will necessarily be handled data into, said touch-screen is accomplished the data acquisition and the condition monitoring of current transformer product.
Beneficial effect of the present invention does; The pilot system of said a kind of general convertor product and method; Its test main circuit unit adopts back to back structure, has versatility, can be used as the general pilot system that offshore wind power flexible DC power transmission current transformer, static reacance generator, four-quadrant frequency variation speed regulating device, Active Power Filter-APF, new forms of energy are incorporated into the power networks etc. and install based on full control power electronic devices and energy two-way flow; Accelerate the research and development speed of current transformer product, effectively practiced thrift cost; First converter cell of said pilot system and second converter cell are the control core with the microprocessor, and processor speed is fast, possesses the floating-point operation function, can satisfy the requirement that all kinds of current transformer control of product algorithms are realized; The function of accomplishing the current transformer product through Programmable Logic Controller (PLC) and touch-screen is switched, and is easy to operate, and man-machine interface is friendly.
Description of drawings
According to accompanying drawing and embodiment the present invention is done further explain below.
Fig. 1 is the structural representation of the pilot system of general convertor product of the present invention;
Fig. 2 is the structured flowchart of the pilot system of general convertor product of the present invention;
Fig. 3 is the syndeton synoptic diagram of each circuit of converter cell among the present invention;
Fig. 4 is the power circuit topological structure synoptic diagram of converter cell among the present invention;
Fig. 5 connects synoptic diagram for the inside of host computer unit among the present invention;
Fig. 6 is the wiring point distribution plan of terminal row among the present invention;
Fig. 7 is the process flow diagram of the test method of general convertor product of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.Please referring to figs. 1 through shown in Figure 6.
In the present embodiment; A kind of pilot system of general convertor product; Comprise: test main circuit unit, signal transmission unit and host computer unit; Said test main circuit unit is a back to back structure; It comprises first circuit unit and second circuit unit, and said first circuit unit comprises: the first pressure regulator unit T1, the first I/O control module KM1, the first voltage detection unit Q1, the first isolating transformer unit G1, the first reactor unit Q3, the first current detecting unit Q5, the first converter cell Q7 and direct current linkage unit Q9; Said second circuit unit comprises: the second pressure regulator unit T2, the second I/O control module KM7, the second voltage detection unit Q2, the second isolating transformer unit G2, the second reactor unit Q4, the second current detecting unit Q6 and the second converter cell Q8; Said signal transmission unit is a terminal row.
The described first pressure regulator unit T1 and the second pressure regulator unit T2 are the three-phase alternating current autotransformer; Be connected with electrical network or load, rated voltage is 0-430V, rated power 500kVA; The pilot system input voltage is regulated; Can be the test of initial test systematic control algorithm any voltage gradation is provided, guarantee safety, avoid device failure.
The said first I/O control module KM1 and the second I/O control module KM7 are three-phase ac contactor; Main contacts rated current 1000A; Auxiliary contact will divide/close feedback of status to go back to the host computer unit, behind the combined floodgate AC energy finally sent into first converter cell and second converter cell carries out transformation of electrical energy; Cut off being connected of pilot system and electrical network or load behind the separating brake, its branch, close by the host computer unit and control according to the pilot system needs.
The said first voltage detection unit Q1 and the second voltage detection unit Q2 constitute by three voltage hall sensors; Connect with the three-phase ac contactor of the corresponding first I/O control module KM1 and the three-phase ac contactor of the second I/O control module KM7; Detect three-phase alternating voltage respectively; Its rated primary voltage AC0-500V, secondary side output 4-20mA current signal.
The said first isolating transformer unit G1 includes Y/Y with the second isolating transformer unit G2 and is connected three-phase transformer and bypass contactor; Isolating transformer when being incorporated into the power networks connection as converter cell; Primary side, rated secondary voltage are 500V, capacity 500kVA, and deciliter action of bypass contactor is controlled according to pilot system operation needs by the host computer unit; During combined floodgate isolating transformer is excised from pilot system, during separating brake transformer is inserted pilot system.
The said first reactor unit Q3 and the second reactor unit Q4 include three-phase alternating current reactance device and bypass contactor, and wherein, the reactor rated current is 1000A, and inductance is measured 0.2mH, rise use as system's input current filtering and current transformer direct current press pump; Bypass contactor is a three-phase ac contactor, rated current 1000A, and its deciliter action, is excised AC reactor during combined floodgate according to the control of pilot system operation needs by host computer from system, during separating brake AC reactor is inserted pilot system.
The said first current detecting unit Q5 and the second current detecting unit Q6 constitute by three current Hall sensors, detect the AC side of converter three-phase current respectively, its rated current 0-1500A, output 4-20mA current signal.
Said direct current linkage unit Q9 comprises first group of dc capacitor, second group of dc capacitor and D.C. contactor KM4; Capacity is 3000 μ F, rated insulation voltage 1500V, and wherein first group of dc capacitor is connected Q7 with first converter cell; Second group of dc capacitor is connected with the second converter cell Q8 DC side; First group of dc capacitor, second group of dc capacitor are all parallelly connected with D.C. contactor KM4, and simultaneously, first group of dc capacitor, second group of dc capacitor wiring all are connected to terminal row; Can first group of dc capacitor, second group of dc capacitor be connected mutually according to the pilot system needs, be about to the first converter cell Q7 and the second converter cell Q8 and form back-to-back syndeton.
The said first converter cell Q7 and the second converter cell Q8 include governor circuit, power circuit, driving circuit, signal conditioning circuit and feed circuit; Wherein: 1) governor circuit is a core with the DSP28335 chip; The first current detecting unit Q5 corresponding with the second converter cell Q8 with host computer unit, driving circuit, signal conditioning circuit and the first converter cell Q7 is connected with the second current detecting unit Q6; Carry out the control signal exchange through communication interface and host computer unit; The exchange of control signal comprises the first converter cell Q7 and the running state information transmission of the second converter cell Q8 and the transmission of command signal; The start pulse signal that generates after the computing is passed to driving circuit through optical fiber; Thereby control the action of each switching device; Driving circuit is sent overvoltage, short trouble signal back to governor circuit simultaneously, and the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and the second current detecting unit Q6 deliver to governor circuit with the operating electric current of pilot system, information of voltage and carry out computing, the operation of control pilot system.2) power circuit is the routine two level fully controlled bridges based on insulated gate bipolar transistor (IGBT); It comprises AC side and DC side; AC side connects the corresponding first reactor unit Q3 or the second reactor unit Q4, and DC side is connected to the end of direct current linkage unit Q9, simultaneously; Receive the start pulse signal of driving circuit, link to each other with the IGBT gate pole in the three-phase bridge.3) driving circuit receives the start pulse signal that governor circuit sends, through photoelectricity isolate with power amplification after link to each other with the IGBT gate pole.4) be connected with governor circuit; Be used for the pilot system parameter that the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and the second current detecting unit Q6 obtain is carried out filtering and conversion process, mainly utilize integrated operational amplifier that detection signal is adjusted to the 0-3V scope.5) feed circuit are the Switching Power Supply structure; Be input as AC 220V civil power; Export three groups of direct supplys to be respectively ± 15V, 5V, 24V, be governor circuit, driving circuit, signal conditioning circuit, the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and second current detecting unit Q6 power supply.
Said host computer unit comprises Programmable Logic Controller (PLC) and touch-screen; Be responsible for gathering the data of whole test system and the state of monitoring test system; Wherein PLC links to each other with the RS-232 communication cable with the governor circuit of the first converter cell Q7 and the second converter cell Q8; Inter-burst connects the translation interface into RS-485/232, reaches the purpose of matched level; The first converter cell Q7, the second converter cell Q8 and PLC form the communication network of serial ports; Pilot system is gathered the operation information of the first converter cell Q7 and the second converter cell Q8 through communication cable; Said operation information comprises: alternating voltage, the electric current of input and output; DC voltage, the electric current of input and output, running temperature, and transfer instruction signal message; Touch-screen is connected with PLC through the RS-485 communication cable, the operation information of transmission test system and command signal.
Said signal transmission unit is a terminal row; Said terminal row will exchange I/O wiring A0-C0 and U0-W0, the first pressure regulator unit T1 output terminal wiring A1-C1 and the second pressure regulator unit T2 output terminal wiring U1-W1, direct current linkage unit Q9 wiring P1; N1 and P2; N2, the first converter cell Q7 AC side wiring A2-C2, the second converter cell Q8 AC side wiring U2-W2 all cause terminal, are used to connect the current transformer product of different structure, outside input wires and checkout equipment.Said A0-C0 can be connected AC network as required with U0-W0.Said A1-C1 can be connected AC network or load as required with U1-W1.Said P1, N1 and P2, N2 can connect external solar input or the two interconnection as required.Said A2-C2 and U2-W2 can external as required passive filters.
Please with reference to shown in Figure 7, Fig. 7 is the process flow diagram of the test method of general convertor product of the present invention.
In the present embodiment, a kind of test method of general convertor product, said method comprises the steps:
101, the touch-screen of host computer unit sends steering order, and steering order is imported the Programmable Logic Controller of host computer unit into.
102, Programmable Logic Controller transmits control signal to the bypass contactor of bypass contactor, the first reactor unit Q3 and the second reactor unit Q4 of the first I/O control module KM1, the second I/O control module KM7, the first isolating transformer unit G1 and the second isolating transformer unit G2, the D.C. contactor of direct current linkage unit Q9 according to receiving steering order.
103, after Programmable Logic Controller receives the steering order that touch-screen sends, import steering order into the governor circuit of the first converter cell Q7 and the governor circuit of the second converter cell Q8 through translation interface.
104, the feed circuit of the feed circuit of the first converter cell Q7 and the second converter cell Q8 are governor circuit, driving circuit, signal conditioning circuit, the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and second current detecting unit Q6 power supply; The governor circuit of the governor circuit of the first converter cell Q7 and the second converter cell Q8 receives the steering order that the host computer unit sends; The microprocessor of said governor circuit sends to the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and the second current detecting unit Q6 with steering order, and the said first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and the second current detecting unit Q6 make an experiment according to the correlation parameter of the steering order of receiving to the current transformer product.
105, the start pulse signal that generates after with computing of the microprocessor of said governor circuit is passed to each switching device of driving circuit control; Said driving circuit receives the start pulse signal that governor circuit sends; And with pulse signal carry out photoelectricity isolate with the power amplification processing after import power circuit into, said driving circuit is sent overvoltage, short trouble signal back to governor circuit.
106, said signal conditioning circuit carries out filtering and conversion process with the pilot system parameter that the first voltage detection unit Q1, the second voltage detection unit Q2, the first current detecting unit Q5 and the second current detecting unit Q6 obtain, and the data after the processing are delivered to governor circuit and carried out computing.
107, the microprocessor of said governor circuit is handled the back is imported the host computer unit into through translation interface Programmable Logic Controller to current transformer product testing data; Import the touch-screen of host computer unit after said Programmable Logic Controller will necessarily be handled data into, said touch-screen is accomplished the data acquisition and the condition monitoring of current transformer product.
The concrete course of work of the present invention: if carry out motor speed regulation system exploitation or test, can KM1-KM5 is closed, KM6-KM7 breaks off, and terminal A0-C0 inserts three-phase alternating current, and terminal U2-W2 connects motor (rated power is less than 500kW).As required, regulate the first pressure regulator unit T1 scalable input voltage amplitude, drive motor experimentizes or tests.If carry out flexible DC power transmission system development or test, can KM1, KM7 closure be broken off KM2-KM6; Terminals P 1; P2 and N1 insert suitable sized capacitors, resistance, inductance component between the N2, can simulate long apart from direct current transportation cable equivalent electrical circuit; When being connected with AC network, terminal A0-C0, U0-W0 constitute the flexible DC power transmission system of electrical network-electrical network.If carry out the aerogenerator experiment of being incorporated into the power networks; Can be with KM1, KM4, KM7 closure; KM2, KM3, KM5, KM6 are broken off; Terminal A0-C0 is connected with electrical network, and terminal U0-W0 is connected with aerogenerator, regulates the first pressure regulator unit T1 and the second pressure regulator T2 scalable input/output voltage amplitude as required.If carry out active power filtering or reactive-load compensation exploitation or test, can KM1 is closed, break off all the other contactors, terminal A0-C0 is connected with electrical network, and is perhaps that KM7 is closed, breaks off all the other contactors, and terminal U0-W0 is connected with electrical network.Different according to compensation capacity, also can realize two sets in parallel operation, closed KM1, KM7 contactor, all the other contactors break off, and terminal A0-C0 is connected with electrical network with U0-W0.If carry out photovoltaic parallel in system exploitation or test, can closed KM1, all the other contactors break off; Terminals P 1, N1 insert photovoltaic cell output; T1 is connected to the grid through the pressure regulator unit to be about to electric energy, and perhaps that KM7 is closed, all the other contactors break off; Terminals P 2, N2 insert photovoltaic cell output, are about to electric energy and are connected to the grid through the second pressure regulator unit T2.Various pilot system control algolithms all write the DSP28335 chip of converter cell, and the set-point parameter is set by the touch-screen of host computer unit in the pilot system control algolithm.
Said technical scheme of the present invention; Compare with the pilot system of general convertor product; The integrated RS-232 communication function of the DSP28335 chip of the governor circuit of the governor circuit of first converter cell and second converter cell; Can data be detected and running state data is transferred to the host computer unit in this locality, be convenient to carry out the check of data analysis and system performance, make things convenient for the pilot system debugging simultaneously; DSP28335 has the floating-point operation kernel, and processing speed is fast, can accomplish the computing of various complicated algorithms, supports the programming of C and C Plus Plus, highly versatile, portable good.Each main tie point of pilot system all is connected with terminal row, and it is convenient to connect testing apparatus, simultaneously, also can be used as the multi-machine parallel connection interface, for expanded function and capacity are provided convenience.
The test main circuit unit of said pilot system adopts back to back structure; Has versatility; Can be used as offshore wind power flexible DC power transmission current transformer, static reacance generator, four-quadrant frequency variation speed regulating device, Active Power Filter-APF, the new forms of energy general pilot system of device such as be incorporated into the power networks based on full control power electronic devices and energy two-way flow; Accelerate the research and development speed of current transformer product, effectively practiced thrift cost; The function of accomplishing the current transformer product of test through Programmable Logic Controller (PLC) and touch-screen is switched, and is easy to operate, and man-machine interface is friendly; The strong, weak electricity of said pilot system partly adopts photoelectricity to isolate, thereby the warranty test system is safe and reliable to operation.
Above-mentioned preferred embodiment of the present invention and the institute's application technology principle of being merely, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed in protection scope of the present invention.
Claims (15)
1. the pilot system of a general convertor product; It is characterized in that; Comprise: test main circuit unit, signal transmission unit and host computer unit, said test main circuit unit is used to test the correlation parameter of current transformer product, and imports the related experiment data into the host computer unit; Said host computer unit is connected with the test main circuit unit through signal transmission unit, and be used for control and test main circuit unit, and the related data of the current transformer product that imports into from signal transmission unit of processing.
2. the pilot system of general convertor product according to claim 1; It is characterized in that; Said test main circuit unit comprises first circuit unit and second circuit unit; Said first circuit unit and second circuit unit are used for the correlation parameter of current transformer product is made an experiment, and import the related experiment data into the host computer unit.
3. the pilot system of general convertor product according to claim 2 is characterized in that, said first circuit unit comprises:
The first pressure regulator unit is connected with electrical network or load, is used to regulate the input voltage of pilot system;
The first I/O control module is used to switch on or off and being connected of the first pressure regulator unit, and will switch on or off information feedback and give the host computer unit;
First voltage detection unit is connected with the first pressure regulator unit through the first I/O control module, is used to detect alternating voltage;
The first isolating transformer unit is used for as the converter cell isolating transformer when connecting that is incorporated into the power networks, and said host computer unit is controlled the first isolating transformer unit according to pilot system operation needs and whether inserted pilot system;
First reactor unit is used for as filtering of pilot system input current and converter cell direct current press pump liter, and said host computer unit is controlled first reactor unit according to pilot system operation needs and whether inserted pilot system;
First current detecting unit is used to detect the electric current of converter cell, and said host computer unit controls according to the needs of pilot system that first current detecting unit is connected with first reactor unit or first voltage detection unit connects;
First converter cell is connected with first current detecting unit, is used to control the pilot system operation and handles current transformer product correlation test data;
The direct current linkage unit is connected with converter cell, and said host computer unit is selected whether the direct current linkage unit to be inserted pilot system according to the needs of the current transformer product of test.
4. the pilot system of general convertor product according to claim 3; It is characterized in that said second circuit unit comprises: the second pressure regulator unit, the second I/O control module, second voltage detection unit, the second isolating transformer unit, second reactor unit, second current detecting unit and second converter cell.
5. the pilot system of general convertor product according to claim 4; It is characterized in that; The connected mode of the said second pressure regulator unit, the second I/O control module, second voltage detection unit, the second isolating transformer unit, second reactor unit, second current detecting unit and second converter cell and order are identical with unit of the same race in first circuit unit, and said second converter cell connects the direct current linkage unit other end.
6. the pilot system of general convertor product according to claim 5 is characterized in that, said first converter cell and second converter cell include governor circuit, power circuit, driving circuit, signal conditioning circuit.
7. the pilot system of general convertor product according to claim 6; It is characterized in that; Said governor circuit is a core with microprocessor (DSP); First current detecting unit corresponding with second converter cell with host computer unit, driving circuit, signal conditioning circuit and first converter cell is connected with second current detecting unit; And carry out control signal exchange with the host computer unit, and the start pulse signal that said microprocessor generates after with computing is passed to each switching device of driving circuit control, and driving circuit is sent overvoltage, short trouble signal back to governor circuit.Said first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit are delivered to governor circuit with the operating electric current of pilot system, information of voltage and are carried out computing, the operation of control pilot system.
8. the pilot system of general convertor product according to claim 7; It is characterized in that; Said power circuit is two level fully controlled bridges; Comprise AC side and DC side, said AC side connects first reactor unit or second reactor unit, and said DC side connects an end of direct current linkage unit; Said signal conditioning circuit is connected with governor circuit, is used for the pilot system parameter that first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit obtain is carried out filtering and conversion process.
9. the pilot system of general convertor product according to claim 8; It is characterized in that; Said host computer unit is used to gather the state of the data and the monitoring test system of whole test system, and it comprises Programmable Logic Controller (PLC) and touch-screen, and said Programmable Logic Controller is connected with the governor circuit of first converter cell and second converter cell; Said touch-screen is connected with Programmable Logic Controller, is used for the operation information and the command signal of transmission test system.
10. according to the pilot system of the described general convertor product of one of claim 2 to 9, it is characterized in that said signal transmission unit is a terminal row, be used to connect the current transformer product of different structure, outside input wires and checkout equipment.
11. the test method of a general convertor product is characterized in that, comprises the steps:
S1, host computer unit make an experiment to the correlation parameter of test main circuit unit transmission dependent instruction control test main circuit unit to the current transformer product;
S2, test main circuit unit receive the relevant steering order that the host computer unit sends; And current transformer product correlation parameter is made an experiment, and import the related experiment data into the host computer unit through signal transmission unit based on full control power electronic devices and energy two-way flow;
S3, host computer unit receive and handle the correlation test data of importing the current transformer product that imports into the unit from signal into.
12. the test method of general convertor product according to claim 11; It is characterized in that; Said step S1 specifically comprises: touch-screen sends steering order; Steering order is imported the Programmable Logic Controller of host computer unit into; Programmable Logic Controller transmits control signal to the bypass contactor of bypass contactor, first reactor unit and second reactor unit of the first I/O control module, the second I/O control module, the first isolating transformer unit and the second isolating transformer unit, the D.C. contactor of direct current linkage unit; Simultaneously, import steering order into the governor circuit of first converter cell and the governor circuit of second converter cell through translation interface.
13. the test method of general convertor product according to claim 11; It is characterized in that; Said step S2 specifically comprises: the governor circuit of the governor circuit of first converter cell and second converter cell receives the steering order that the host computer unit sends; The microprocessor of said governor circuit sends to first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit with steering order, and said first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit make an experiment according to the correlation parameter of the steering order of receiving to the current transformer product.
14. the test method of general convertor product according to claim 13; It is characterized in that; Said step S2 also comprises: the start pulse signal that the microprocessor of said governor circuit generates after with computing is passed to each switching device of driving circuit control; Said driving circuit receives the start pulse signal that governor circuit sends, and pulse signal is carried out importing power circuit into after photoelectricity isolation and the power amplification processing, and said driving circuit is sent overvoltage, short trouble signal back to governor circuit; Said signal conditioning circuit carries out filtering and conversion process with the pilot system parameter that first voltage detection unit, second voltage detection unit, first current detecting unit and second current detecting unit obtain, and the data after the processing are delivered to governor circuit and carried out computing.
15. the test method of general convertor product according to claim 11; It is characterized in that; Said step S3 specifically comprises: the microprocessor of said governor circuit is handled the back is imported the host computer unit into through translation interface Programmable Logic Controller to current transformer product testing data; Import the touch-screen of host computer unit after said Programmable Logic Controller will necessarily be handled data into, said touch-screen is accomplished the data acquisition and the condition monitoring of current transformer product.
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