CN205484764U - Temporary stable state of alternating current -direct current integration detection device - Google Patents
Temporary stable state of alternating current -direct current integration detection device Download PDFInfo
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- CN205484764U CN205484764U CN201620259787.8U CN201620259787U CN205484764U CN 205484764 U CN205484764 U CN 205484764U CN 201620259787 U CN201620259787 U CN 201620259787U CN 205484764 U CN205484764 U CN 205484764U
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Abstract
The utility model discloses a temporary stable state of alternating current -direct current integration detection device, include experimental power of the temporary stable state of alternating current -direct current integration and electronic type current transformer field test detecting system, wherein the experimental power of the temporary stable state of alternating current -direct current integration a direct current strikes power, a temporary stable state power of direct current, an interchange temporary stable state power of power frequency and synthetic loop control system, electronic type current transformer field test detecting system is including standard mutual inductor, standard conversion equipment, mutual -inductor composite error check gauge. The utility model discloses a detection device can realize the integration of direct current transformer and ac current transformer's temporary stable state experimentally respectively, through the direct current assault / temporarily the experimental power of stable state with exchanges the synthetic test return circuit method that the experimental power of temporary stable state is formed, obvious reduce the direct current and assault / stable state energy -storage capacitor's in experimental capacity temporarily, adjustment that in addition can be accurate nimble more and dispose important parameter such as transient current peak value, attenuation time constant, step current response.
Description
Technical field
It is detecting device integrated that this utility model relates to a kind of temporary stable state of alternating current-direct current, is specially a kind of for electronic current mutual inductance
The temporary stable state of device (ECT) alternating current-direct current based on modularized design is detecting device integrated, including direct current impact/temporary steady state test electricity
Source and exchange temporary steady state test power supply composition synthetic test loop method, can realize respectively to DC current transformer with exchange
The temporary stable state integration test of current transformer, belongs to the transformer detection experimental technique field of electric utility.
Background technology
In China, the feature of energy resources and consumer center contrary distribution determine electrical network necessarily use Large Copacity, remote,
The development strategy of voltage levels transmission of electricity, progressively builds the sturdy power grid that exchange, strong dc complement each other and support by force.Along with
The high speed development of China's power grid construction, power system capacity constantly increases, super, that extra-high voltage alternating current-direct current power transmission network becomes electric power is defeated
The bulk transmission grid sent.Surpass, transmission line capability is big, power transmission distance is remote, line loss is little because it has for UHV AC/DC Transmission Technology
Advantage, is greatly developed in recent years in China's power grid construction, and construction scale expands year by year.
Put into operation ± 400kV～± 800kV DC transmission engineering 20 remainder at present, it is contemplated that will build up 30 before and after the year two thousand twenty
Remainder.At present, China only has 10 extra high voltage lines and is approved to go into operation, and wherein six " two friendships four are straight " UHV Transmission Engineering is
Through putting into operation, 2015, national grid extra high voltage line construction plan was " five friendships eight are straight ", and totally 13, national grid is also counted
Draw the year two thousand twenty and build up " five indulge five horizontal strokes ", add up to 27 extra high voltage lines.It is transregional that AC/DC transmission line has become as China
The important channel of territory power transmission, its resource distribution effect in electrical network and on the impact of power network safety operation the most more
For significantly.
Super, extra-high voltage grid institute's facing challenges in terms of safe and stable operation becomes increasingly conspicuous, and one of its typical performance is exactly
System short circuit current is big and a time constant is big.Relay protection as ensure security of system stable operation technical measures its
Performance is temporary by the current transformer providing system power information for it, steady-state characteristic is affected, especially Current Mutual Inductance
The impact of device transient characterisitics.In the electrical network that voltage is relatively low, the aperiodic component of short-circuit current rate of decay quickly, short circuit current
Quickly reach steady statue, therefore use general protective current transformer, can meet requirement.But China actual carry out super,
In extra-high voltage electric transmission and transformation demonstration project, Power Exchange capacity is huge, current transformer electric current in 750kV transformer station GIS major loop
No-load voltage ratio is up to the electric current no-load voltage ratio of current transformer in 4000A/1A, 1000kV extra-high voltage demonstration project GIS major loop and is up to
6000A/1A, super at these, extra-high voltage electric power system short circuit currents aperiodic component is longer for die-away time, and require excision
The time of short trouble is the shortest, if current transformer transient characterisitics are bad, it is likely that cause protective relaying maloperation or tripping
The safe and stable operation of threat system.This certificate test of being just correlated with current transformer transient error is had higher requirement.
When specifying at electric power mutual-inductor check according to JJG1021-2007 " electric power mutual-inductor " vertification regulation and provide formal report
Direct comparison method should be used to examine and determine, specify for having current transformer GB GBl6847-l997 of transient protection characteristic
Type approval test is the direct method test carried out under the threshold parameters and cycle of operation of regulation.Direct comparison method is to experiment power supply
Capacity requirement is quite big, and traditional experiment power supply needs to regulate primary circuit time constant so by change loop inductance
Too high being difficult to of impedance loop can be caused again to meet transient current requirement.
For the problems referred to above, there is scholar to propose the next equivalent transient characterisitics straightway testing method of the ampere-turn method synthetic test methods such as employing and come
Solve the LF-response characteristic of current transformer band decaying DC component, by power frequency stable state power supply and the synthesis of direct current transient state power supply
Relay protection power supply, comes analog DC steady-state current and transient current, with oscillating AC electric current by changing DC loop inductance
Synthesize transient state, a steady-state current.Although the program reduces power supply test than traditional transient characterisitics direct method testing program
Capacity, can be respectively configured ac test capacity and loop parameter and direct current transient characterisitics capacity of experiment and loop parameter, carry
The high motility of test.But owing in actual tests, the time constant of transient characterisitics is widely different, can to direct current transient state loop
The design difficulty adjusting inductance is greatly increased and is even difficult to, simultaneously in order to meet above-mentioned requirements, to overall stored energy capacitance be
System design difficulty and cost are also greatly increased.Time constant is the biggest, and energy-storage system and the design difficulty of test loop and cost are more
Greatly, in order to meet 200ms and the test requirements document of above time constant, direct current transient simulation test systems only storage capacitor and testing back
Road cost is the most millions of, and cost is the biggest, bulky, is unfavorable for that later upgrading and scene use flexibly, it is impossible to full
Foot instrument transformer transient characteristic test application demand, is unfavorable for the universal of instrument transformer transient characteristic experimental technique and extensively application.
Utility model content
The purpose of this utility model is the problem proposed for background technology, proposes a kind of for electronic current mutual inductor
(ECT) the temporary stable state of alternating current-direct current based on modularized design is detecting device integrated, tests including alternating current-direct current temporary stable state integration
Power supply and electronic current mutual inductor scene testing inspection system.The synthetic test of alternating current-direct current temporary stable state integration experiment power supply returns
Path method, hence it is evident that reduce the capacity of storage capacitor in direct current impact/temporary steady state test, and can be to electronic current mutual inductor
Carry out accurately adjusting and joining of the important parameters such as transient current peak value, damping time constant, step current response more flexibly
Put.Meanwhile, the temporary stable state of described alternating current-direct current is detecting device integrated by modular arrangements with combination, can realize respectively directly
The temporary stable state integration test of stream current transformer and AC current transformer.
In order to meet the needs of prior art, this utility model provides a kind of for electronic current mutual inductor (ECT)
The temporary stable state of the big electric current of alternating current-direct current is detecting device integrated.The temporary stable state of described alternating current-direct current is detecting device integrated, including alternating current-direct current
Stable state integration experiment power supply and electronic current mutual inductor scene testing inspection system temporarily.Wherein alternating current-direct current temporary stable state integration
Experiment power supply includes AC power frequency temporary stable state power supply, direct current temporary steady state test power supply and direct current impact power supply and synthetic test control
System processed forms；Electronic current mutual inductor scene testing inspection system, including standard mutual inductor, standard handovers device, mutually
Sensor combination misalignment testers etc. form.
Described AC power frequency temporary stable state power supply includes high power laboratory transformator, single-phase voltage regulator, low voltage dynamic reactive-power compensation
The detecting and controlling system compositions such as capacitance group module, controlled switching IGCT, current lifting device and big electric current CT；
The input of described single-phase voltage regulator be connected to high power laboratory transformator outfan or three-phase line voltage port it
Between, one end of outfan is connected to the side of controlled switching IGCT, and one end is connected to low voltage dynamic reactive-power compensation capacitance group mould
Between block and current lifting device input；
Described controlled switching IGCT is bidirectional thyristor or by 2 single-phase IGCTs and connect the two-way brilliant lock of 1 formed
Pipe, is connected between single-phase voltage regulator and current lifting device；
Described low voltage dynamic reactive-power compensation Capacitor banks module is zero passage voltage automatic switching, and two ends are attempted by the defeated of current lifting device
Entering two ends, side, described big electric current CT string is at the output port of current lifting device；
It is following long-time steady that described AC power frequency temporary stable state power supply realizes the rated value (such as 6kA) of AC current transformer etc.
The test of state galvanic series and short time transient AC current testing.
Described direct current impact power supply includes high frequency high voltage capacitor charge power supply, charging control switch, pulse power energy storage electricity
Appearance, highpowerpulse IGCT, fixing or adjustable afterflow inductance and detection protection control circuit composition；
Described high frequency high voltage capacitor charge power supply is single-phase or three-phase input, and the positive pole of outfan is with charging control switch even
Connecing, negative terminal is connected with the earth potential of system and the negative pole of pulse power storage capacitor, and described charging control switch is connected to height
Frequently, between high voltage charging power supply and pulse power storage capacitor positive pole, described pulse power storage capacitor is with fly-wheel diode also
Connection, described highpowerpulse IGCT is connected between the positive pole of pulse power storage capacitor and output afterflow inductance, described
Output afterflow inductance string direct current impact power supply output loop in；
Described direct current impact power supply uses modularized design, after stable state power source combination temporary with direct current, can meet direct current large impact
Current rise rate requirement, wide scope time constant regulation is set flexibly, and step square wave current test in short-term, thus
Meet any current testing requirement of DC current transformer.
Described direct current temporary stable state power supply is made up of three-phase low-voltage big controlled current flow DC source, including rectified three-phase circuit,
DC/AC high-frequency inverter circuit, high-frequency rectification circuit, output filter circuit and control protection electric circuit composition；
The power conversion unit of described direct current temporary stable state power supply uses multiple IGBT high-frequency PWM transform power wired in parallel
Composition, three-phase alternating current through three-phase uncontrollable rectifier, DC/AC high-frequency inversion, high frequency transformer output again through flow again rectification,
Filtering finally gives the output of required low-voltage, high-current direct current；
Described direct current temporary stable state power supply can realize exporting and meet the rated value (such as 5kA) of DC current transformer and the longest
The campaign requirement of time steady-state current, and meet the big electric current of the transient DC (such as 20kA) of short time (within 1 minute)
Output, maximum transient output current-responsive digit rate can reach 10kA/10mS.
Described AC power frequency temporary stable state power supply, direct current impact power supply and direct current temporary stable state power supply all use modularized design, logical
Cross block combiner mode and both can realize the steady-state current test requirements document of electronic type AC current transformer, protected level can be met again
The transient heavy current protection feature scene commissioning test requirement of ECT, meanwhile, can realize AC great current output, direct current flexibly
The configuration of dash current climbing speed and direct current transient state/dash current value and time constant control.
Described mutual inductor on site testing inspection system includes standard mutual inductor, standard handovers device, transformer combination misalignment school
Test the compositions such as instrument；
Described synthesis loop control system includes exchanging temporary homeostatic control module, direct current temporary steady-state current control module, direct current
Dash current control module and system control unit composition；
Described system control unit includes that system protection control module, phase-controlled module, waveform monitoring modular and waveform are adjusted
Joint Prefabricated block, by module output waveform each in monitoring system, and adjusts work shape to different current output module output
The signal instruction of state and command signal moment etc.；
Described system phase-controlled module, with described power-frequency voltage zero point, is used for controlling output unit between disparate modules and meets
The synthetic waveform that out of phase requires；
Described waveform monitoring modular, for gathering the alternating current-direct current temporary astable output electrical current waveform of different current output module, from
And the steady-state current waveform described in monitoring system and transient current waveform；
Described waveform adjustment module, for regulating the climbing speed of transient current waveform, time constant, electric current are held time,
Thus transient current waveform is adjusted, coordinate the electric current output of direct current impact/temporary stable state power supply, can form to export to meet and appoint
The ac and dc current waveform of meaning feature.
The temporary stable state integration experiment power supply job content of described alternating current-direct current is as follows:
(1) 5kA of DC current transformer and following long-time stable state campaign are realized by direct current temporary stable state power supply, 1
20kA direct current transient current output within minute, maximum transient output current-responsive digit rate 10kA/10mS；
(2) by direct current temporary stable state power supply and the combination of direct current impact power supply, it is achieved the 20kA of DC current transformer and with
The direct current impact transient current test of lower 40mS-1min and square wave current test etc., it is achieved the impact electricity of 20kA/500uS
Stream climbing speed and the flexible setting of wide scope time constant；
(3) 6kA and the examination of following long-time stable state series of AC current transformer is realized by AC power frequency temporary stable state power supply
Test, owing to this module does not has loop controllable impedance, and use Large Copacity IGCT operating passing zero and capacitance reactive compensation design,
The power supply capacity of experiment exchanging temporary steady-state current module can be greatly reduced；
(4) by AC power frequency temporary stable state power supply, direct current temporary stable state power supply and the combination of direct current impact power supply, it is achieved protection
The 20kA protection feature scene commissioning test of level electronic current mutual inductor (ECT) transient heavy current is tested, and meets and hands over
Flow component peak point current: 20kA circle or 20kA single turn；The direct current output electric multiple process of employing, DC component full migration, time
Between constant meet 40mS～1min, it is achieved direct current offset dash current climbing speed and the flexible setting of wide scope time constant.
Compared with prior art, the beneficial effects of the utility model are:
1, in technical solutions of the utility model, use direct current impact power supply, direct current temporary steady state test power supply and AC power frequency temporary
Stable state power source combination realizes AC/DC integrated temporary steady state test power-supply system, realizes exchange by different output currents combination
Or the arbitrary size of direct current and the output current wave of shape；
2, in technical solutions of the utility model, system phase-controlled mode is used, with the AC power frequency voltage zero-cross moment for rising
Point, the electric discharge of the impulse power thyristor controlling direct current impact power supply triggers the moment to meet the synthesis output of out of phase requirement
Current waveform；
3, in technical solutions of the utility model, use bidirectional thyristor to realize exchange stable state or transient current passing zero trigger control,
Realize automatically controlling of AC low-tension dynamic passive compensation electric capacity by the cubicle switch mode of IGCT and electromechanical contactors, adopt
The big electric current of output of tens of kilo-ampere can be obtained by current lifting device parallel combination mode；
4, in present aspect technical scheme, fixed inductance or little controllable impedance is used to meet the climbing speed of dash current, it is not necessary to
Controllable impedance, uses the big power supply of direct current transient state to control the entirety output time constant of electric current, current fall rate and electric current and maintains
Time, the temporary steady-state current waveform of ac and dc current accurately controls and regulates；
5, in present aspect technical scheme, use direct current impact power supply and direct current transient state power source combination mode, improve direct current temporary
The rate of climb of state electric current, also reduces the output current capacity to direct current transient state power supply and performance indications requirement simultaneously；
6, cancel bulk testing loop controllable impedance by polymorphic type block combiner test method, only retain direct current dash current
Test inductance in module, uses fixed small inductor or micro-controllable impedance mode to ensure that dash current climbing speed and minimum are put
Electrical time constant requirement；Bulk testing system uses modular combination design and integration control technology, it is achieved total system is without electricity
Sense or the design of micro-controllable impedance and controlled switching based on reactive-load compensation control, compared with simple energy storage transient state impact test loop side
Case, energy storage pulsed capacitance and test requirements document condition, by 15000uF/2kA/40mS/, are reduced to 1600uF/20kA/ and the time are normal
Number is from 40mS～1min；Be substantially reduced the capacity requirement to experiment power supply, meet alterating and direct current current transformer temporarily, steady state test
With detection technique demand；
7, return with the synthetic test exchanging temporary steady state test power supply composition based on modular direct current impact/temporary steady state test power supply
Path method, can realize the test of the temporary stable state integration to DC current transformer and AC current transformer respectively.
Accompanying drawing explanation
Accompanying drawing 1 is that in this utility model embodiment, the principle of a kind of electronic current mutual inductor transient characterisitics synthetic test system is shown
It is intended to；
Accompanying drawing 2 is the operation principle schematic diagram of direct current impact power supply in this utility model embodiment；
Accompanying drawing 3 is the operation principle schematic diagram of direct current temporary stable state power supply in this utility model embodiment；
Accompanying drawing 4 is the operation principle schematic diagram of AC power frequency temporary stable state power supply in this utility model embodiment；
Accompanying drawing 5 is the work of electronic current mutual inductor transient characterisitics synthetic test system realization scheme in this utility model embodiment
Make principle schematic；
Accompanying drawing 6 is that in this utility model embodiment, direct current impacts oscillogram after power supply amplifies；
Accompanying drawing 7 is that in this utility model embodiment, direct current impacts power supply and direct current temporary stable state power supply and synthesizes total output current wave
Shape figure；
Accompanying drawing 8 is that in this utility model embodiment, direct current impacts power supply and synthesizes total output Current amplifier oscillogram.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most all along
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to
The embodiment that accompanying drawing describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to of the present utility model
Limit.
Below in conjunction with accompanying drawing, the present embodiment is described further:
The alternating current-direct current detecting device integrated structure of temporary stable state of the electronic current mutual inductor (ECT) provided in the present embodiment is such as
Shown in Fig. 1, described detection device includes being impacted by AC power frequency temporary stable state power supply, direct current temporary steady state test power supply and direct current
Power supply and synthesis loop control system composition alternating current-direct current temporary stable state integration experiment power supply and electronic current mutual inductor
(ECT) on-the-spot testing inspection system composition.
The power frequency component loop that AC power frequency temporary stable state power supply is connected between current lifting device and ECT test product, to power frequency component loop
Output power frequency ac voltage and industrial frequency AC electric current；As shown in Figure 4, AC power frequency temporary stable state power supply includes three-phase/single-phase great Rong
Amount testing transformer T1, automatic single-phase voltage regulator T2, controlled switching bidirectional thyristor D1, low voltage dynamic reactive-power compensation electric capacity
The compositions such as group module C1, current lifting device T3 and big electric current CT, wherein current lifting device T3 primary side is with compensation Capacitor banks C1 also
Connection, controlled switching bidirectional thyristor D1 one end is connected with the secondary side of automatic single-phase voltage regulator T2, one end and compensation capacitor
Group C1 connects.
The direct current dash current component loop that direct current impact power supply is connected between dash current output port and ECT test product；As
Shown in Fig. 2, direct current impact power supply includes high frequency high voltage capacitor charge power supply DY1, charging control switch K1, pulse merit
Rate storage capacitor C1, highpowerpulse IGCT D1, sustained diode 2 and afterflow inductance L1 composition, charging control is opened
Pass K1, highpowerpulse IGCT D1, afterflow inductance L1 are connected to the positive terminal of DC capacitor charge power supply DY1 in turn
And between ECT test product, highpowerpulse IGCT D1 is connected to pulse power storage capacitor C1 and sustained diode 2
Positive terminal between.
Direct current temporary stable state power supply connects and temporary direct current temporary steady-state current component between steady-state current output port and ECT test product
Loop；As it is shown on figure 3, direct current temporary stable state power supply is by three phase rectifier unit, IGBT high-frequency inversion bridge unit, high frequency transformation
Device, High-current output rectification unit and filter unit composition, direct current temporary steady-state current output unit exports with direct current dash current
Unit realizes directly electrical connection and Parallel opertation, it is achieved the overall coordination of direct current impact/temporary steady-state current controls output；
AC power frequency temporary stable state power supply realizes exchanging the output of temporary steady-state current, and the impact/temporary steady-state current exported with DC source
Realize electrical isolation or approximation single-point electrical connection ampere-turn coupling output, the most total output current wave be exchange temporary stable state
Current waveform superposes with direct current impact/transient current waveform.
As it is shown in figure 5, elaborate the detecting device integrated structure of the temporary stable state of alternating current-direct current of electronic current mutual inductor and work
Principle.The detecting device integrated detector unit of the temporary stable state of alternating current-direct current is straight by detecting the Luo-coil of direct current dash current, detection
Flow shunting meter or DC comparator formula direct current standard mutual inductor, the normalized current of the detection temporary steady-state current of exchange of temporary steady-state current
The big electric current high-precision hall sensor combinations of transformer (CT) and detection output total current forms；Special for different time
Property electric current use different electric current detecting method, carry out total current analytical calculation and Wave data output.
This utility model provides the alternating current-direct current temporary stable state integration detection dress of a kind of alterating and direct current minor current transformer (ECT)
Put, including the on-the-spot testing inspection system group of alternating current-direct current temporary stable state integration experiment power supply and electronic current mutual inductor (ECT)
Become, the steady state test power supply of a kind of direct current of proposition impact/temporarily with exchange the synthetic test loop side that temporary steady state test power supply forms
Method, can realize the test of the temporary stable state integration to DC current transformer and AC current transformer respectively.
As shown in Figure 6, the test waveform of dash current is given.Dash current peak value can be by changing capacitor charged electrical
Pressure i.e. initial discharge voltage is adjusted, and its dash current rise time is then by capacitance and the inductance that always discharges of charging capacitor
Determine.
Direct current dash current source possesses the ability providing the dynamic step of rapid increase, and electric current rising dynamically can reach
The rate of climb of 20kA/ (800us～1ms) and 5kA/ (100～150us), current peak can also be up to 20kA even
Above, the demand of transient characterisitics test is met；But time constant of fall is too short, it is insufficient for testing needs.
By contrast, direct current temporary steady-state current source its rise dynamic time longer, about 10～20ms, but 5kA/ (10～
20) controlling of current-rising-rate can be realized within ms and 20kA/ (10～30) ms slope interval, just can be used to mend
Repay the electric current decline stage in dash current source.Meanwhile, the big current source of the temporary stable state of direct current uses modularized design, in conjunction with interlocking also
Connection technology, it is provided that the temporary steady state test electric current of 1pu, 2pu or even 6pu, as it is shown in fig. 7, give dash current
Current testing waveform after source and direct current temporary steady-state current source and combination.
As shown in Figure 8, the DC current test waveform after direct current dash current source and combination is given.
By combined loop test method(s), the mode being added in combination AC power frequency temporary stable state electric power loop both can retain direct current impact
The rapid increase dynamic characteristic of current source, can utilize again compensation characteristic and the temporary stable state of AC power frequency of temporary stable state adjustable current source
The characteristic of current source, by the combination of three, can realize DC current transformer and AC current transformer respectively is the most steady
State integration is tested.
These are only embodiment of the present utility model, be not limited to this utility model, therefore, all new in this practicality
Within the spirit of type and principle, any amendment, equivalent or the improvement etc. made, should be included in power of the present utility model
Within profit claimed range.
Claims (6)
1. the temporary stable state of alternating current-direct current is detecting device integrated, including alternating current-direct current temporary stable state integration experiment power supply and electronic type
Current mutual inductor on site testing inspection system, wherein, alternating current-direct current temporary stable state integration experiment power supply, including a direct current impact
Power supply, a direct current temporary stable state power supply, an AC power frequency temporary stable state power supply and synthesis loop control system；Electronic current
Mutual inductor on site testing inspection system, including standard mutual inductor, standard handovers device, transformer combination misalignment tester；Its
It is characterised by:
Described direct current impact power supply uses high-frequency and high-voltage charge power supply, pulse power capacitor and high-power thyristor amplifying circuit；
Direct current temporary stable state power supply uses multiple IGBT high-frequency PWM transform power wired in parallel composition, and three-phase alternating current is through three-phase
The output of uncontrollable rectifier, DC/AC high-frequency inversion, high frequency transformer again through flowing rectification again, to finally give required low pressure big in filtering
Current DC exports；AC power frequency temporary stable state power supply include high power laboratory transformator, single-phase voltage regulator, reactive compensation capacitor,
Controlled switching IGCT, current lifting device；Synthesis loop control system includes exchanging temporary homeostatic control module, the temporary steady-state current of direct current
Control module, direct current dash current control module and system control unit.
2. a kind of temporary stable state of alternating current-direct current as claimed in claim 1 is detecting device integrated, it is characterised in that:
Described AC power frequency temporary stable state power supply includes high power laboratory transformator, single-phase voltage regulator, low voltage dynamic reactive-power compensation electricity
Appearance group module, controlled switching IGCT, current lifting device and big electric current CT；
The input of described single-phase voltage regulator be connected to high power laboratory transformator outfan or three-phase line voltage port it
Between, one end of outfan is connected to the side of controlled switching IGCT, and one end is connected to low voltage dynamic reactive-power compensation capacitance group mould
Between block and current lifting device input；
Described controlled switching IGCT is bidirectional thyristor or by 2 single-phase IGCTs and connect the two-way brilliant lock of 1 formed
Pipe, is connected between single-phase voltage regulator and current lifting device；
Described low voltage dynamic reactive-power compensation Capacitor banks module is zero passage voltage automatic switching, and two ends are attempted by the defeated of current lifting device
Entering two ends, side, described big electric current CT string is at the output port of current lifting device；
Described AC power frequency temporary stable state power supply realizes below the rated value of AC current transformer long-time steady-state current series
Test and short time transient AC current testing.
3. a kind of temporary stable state of alternating current-direct current as claimed in claim 1 is detecting device integrated, it is characterised in that:
Described direct current impact power supply includes high frequency high voltage capacitor charge power supply, charging control switch, pulse power energy storage electricity
Appearance, highpowerpulse IGCT, fixing or adjustable afterflow inductance and detection protection control circuit；
Described high frequency high voltage capacitor charge power supply is single-phase or three-phase input, and the positive pole of outfan is with charging control switch even
Connecing, negative terminal is connected with the earth potential of system and the negative pole of pulse power storage capacitor, and described charging control switch is connected to height
Frequently, between high voltage charging power supply and pulse power storage capacitor positive pole, described pulse power storage capacitor is with fly-wheel diode also
Connection, described highpowerpulse IGCT is connected between the positive pole of pulse power storage capacitor and output afterflow inductance, described
Output afterflow inductance string direct current impact power supply output loop in.
4. a kind of temporary stable state of alternating current-direct current as claimed in claim 1 is detecting device integrated, it is characterised in that:
Described direct current temporary stable state power supply is made up of three-phase low-voltage big controlled current flow DC source, including rectified three-phase circuit,
DC/AC high-frequency inverter circuit, high-frequency rectification circuit, output filter circuit and control protection electric circuit composition；
The power conversion unit of described direct current temporary stable state power supply uses multiple IGBT high-frequency PWM transform power wired in parallel
Composition, three-phase alternating current through three-phase uncontrollable rectifier, DC/AC high-frequency inversion, high frequency transformer output again through flow again rectification,
Filtering finally gives the output of required low-voltage, high-current direct current.
5. a kind of temporary stable state of alternating current-direct current as claimed in claim 1 is detecting device integrated, it is characterised in that:
Directly being electrically connected between described direct current impact power supply and direct current temporary stable state power supply, direct current impacts power supply and exchanges work
Ampere-turn method is used to be of coupled connections between frequency stable state power supply temporarily and between direct current temporary stable state power supply and AC power frequency temporary stable state power supply,
The different tests demand to DC current transformer and AC current transformer is realized by different combination configurations.
6. a kind of temporary stable state of alternating current-direct current as claimed in claim 1 is detecting device integrated, it is characterised in that:
Described synthesis loop control system includes exchanging temporary homeostatic control module, direct current temporary steady-state current control module, direct current punching
Hit current control module and system control unit composition, for realize transient current and dash current synchroswitching control,
Relay protection current waveform is with time constant control, by controlling the output current parameters of current source, including peak value, upper raising speed
Rate, time constant etc., to meet the requirement of different tests；
Described system control unit includes system protection control module, phase-controlled module, waveform monitoring modular and waveform adjustment
Prefabricated block, by module output waveform each in monitoring system, and adjusts duty to different current output module output
Signal instruction and the command signal moment；
Described system phase-controlled module, with described power-frequency voltage zero point, is used for controlling output unit between disparate modules and meets
The synthetic waveform that out of phase requires；
Described waveform monitoring modular, for gathering the alternating current-direct current temporary astable output electrical current waveform of different current output module, from
And the steady-state current waveform described in monitoring system and transient current waveform；
Described waveform adjustment module, for regulating the climbing speed of transient current waveform, time constant, electric current are held time,
Thus transient current waveform is adjusted, coordinate the electric current output in direct current impact/temporary steady-state current source, output can be formed and meet
The ac and dc current waveform of arbitrary characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259787.8U CN205484764U (en) | 2016-03-30 | 2016-03-30 | Temporary stable state of alternating current -direct current integration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259787.8U CN205484764U (en) | 2016-03-30 | 2016-03-30 | Temporary stable state of alternating current -direct current integration detection device |
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| CN205484764U true CN205484764U (en) | 2016-08-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676161A (en) * | 2016-03-30 | 2016-06-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Alternating current/direct current transient steady state integrated detection device |
| CN110045308A (en) * | 2018-01-16 | 2019-07-23 | 中国电力科学研究院有限公司 | All -fiber direct current measuring devices step response test macro and method |
| CN111679239A (en) * | 2020-07-23 | 2020-09-18 | 国网冀北电力有限公司计量中心 | System and method for verifying voltage transformer for flexible direct-current power grid |
| CN113884966A (en) * | 2021-10-27 | 2022-01-04 | 云南电网有限责任公司电力科学研究院 | Alternating current-direct current sensor broadband calibrator and performance detection calibration method thereof |
-
2016
- 2016-03-30 CN CN201620259787.8U patent/CN205484764U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676161A (en) * | 2016-03-30 | 2016-06-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Alternating current/direct current transient steady state integrated detection device |
| CN105676161B (en) * | 2016-03-30 | 2019-01-25 | 国网电力科学研究院武汉南瑞有限责任公司 | The temporary stable state of alternating current-direct current is detecting device integrated |
| CN110045308A (en) * | 2018-01-16 | 2019-07-23 | 中国电力科学研究院有限公司 | All -fiber direct current measuring devices step response test macro and method |
| CN111679239A (en) * | 2020-07-23 | 2020-09-18 | 国网冀北电力有限公司计量中心 | System and method for verifying voltage transformer for flexible direct-current power grid |
| CN111679239B (en) * | 2020-07-23 | 2023-05-23 | 国网冀北电力有限公司计量中心 | Voltage transformer verification system and method for flexible direct current power grid |
| CN113884966A (en) * | 2021-10-27 | 2022-01-04 | 云南电网有限责任公司电力科学研究院 | Alternating current-direct current sensor broadband calibrator and performance detection calibration method thereof |
| CN113884966B (en) * | 2021-10-27 | 2023-10-20 | 云南电网有限责任公司电力科学研究院 | AC/DC sensor broadband calibrator and performance detection calibration method thereof |
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