CN106229990B - A kind of load ratio bridging switch regulator, the system and method for distribution transformer - Google Patents
A kind of load ratio bridging switch regulator, the system and method for distribution transformer Download PDFInfo
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- CN106229990B CN106229990B CN201610811165.6A CN201610811165A CN106229990B CN 106229990 B CN106229990 B CN 106229990B CN 201610811165 A CN201610811165 A CN 201610811165A CN 106229990 B CN106229990 B CN 106229990B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to load ratio bridging switch regulator, the system and method for a kind of distribution transformer, the regulator includes upper housing, switching tube pole base plate, high-tension cable plate connector, high-tension cable combined plug, current transformer and permanent-magnetic switching；The upper housing is bolted to connection in the surface of the switching tube pole base plate；The high-tension cable combined plug is fixedly connected on the upper housing by high-tension cable plate connector；The high-tension cable combined plug is for connecting high-tension cable；The current transformer and permanent-magnetic switching are fixedly connected on the switching tube pole base plate.Apparatus structure provided by the invention is succinct, and action component is few, high reliablity, long working life.System be added to monostable permanent-magnetic switching, zero passage detection unit and current-limiting resistance circulation control, automatic control distribution static exciter divide tap transition and conversion complete distribution transformer on-load voltage regulation, make pressure regulation process quickly, without impact.
Description
Technical field
The invention belongs to electronic technology field, be specifically related to a kind of tap distribution transformer on-load voltage regulating device,
System and method.
Background technique
Active service distribution transformer magnet exciting coil tap has tail portion, middle part, several modes of connection in end, and general loaded tap-off is opened
Device is closed to be soaked together with distribution transformer winding in same body.Traditional load ratio bridging switch device is mechanical rotation point
Regulative mode is connect, structure is complicated, and high failure rate, service life is short, and repair and maintenance is difficult.To improve having for distribution transformer comprehensively
On-load shunting switch practical function and convenient for scene dismounting, be badly in need of a kind of load ratio bridging switch device of separate type.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of load ratio bridging switch regulator of distribution transformer,
Realize distribution transformer flexible control quickly, without impact, high reliablity.
Technical scheme is as follows: a kind of load ratio bridging switch regulator of distribution transformer, including upper housing,
Switching tube pole base plate, high-tension cable plate connector, high-tension cable combined plug, current transformer and permanent-magnetic switching；
The upper housing is bolted to connection in the surface of the switching tube pole base plate；
The high-tension cable combined plug is fixedly connected on the upper housing by high-tension cable plate connector；The height
Voltage cable combined plug is for connecting high-tension cable；
The current transformer and permanent-magnetic switching are fixedly connected on the switching tube pole base plate；
The permanent-magnetic switching upper end is provided with outlet terminal for being connected to the high tension cable socket by high-voltage line.
Optionally, it is fixed with current-limiting resistance R on the switching tube pole base plate, the permanent-magnetic switching is divided into K-type permanent magnetism
Switch and T-type permanent-magnetic switching；The K-type permanent-magnetic switching and the T-type permanent-magnetic switching on the switching tube pole base plate simultaneously
Row's setting, the quantity of the current-limiting resistance R is equal with the T-type permanent-magnetic switching quantity, the quantity setting of the T-type permanent-magnetic switching
For every phase 1 to 11, the quantity of the K-type permanent-magnetic switching is set as every phase 3 to 13.
Optionally, the high-tension cable combined plug is on the upper housing at horizontally arranged, the high-tension cable combination
For plug at horizontally arranged on the upper housing, the quantity of the high-tension cable combined plug is set as 1 to 6 any one
Kind.
Optionally, the permanent magnet mechanism of the permanent-magnetic switching is made of Cr system alloy structure material steel.The Cr system of low cost
Structural alloy steel makes the reduction of permanent-magnetic switching cost, more easy-to-use.
Optionally, the T-type permanent-magnetic switching and the current-limiting resistance are arranged side by side, the T-type permanent-magnetic switching, the current limliting
Resistance and any one described K-type permanent-magnetic switching are connected in the same circuit.This set is used to disconnect in K-type permanent-magnetic switching
And before closure conversion, first T-type permanent-magnetic switching and current-limiting resistance is sealed in and disconnect and be closed again phase after circuit stability loop current
K-type permanent-magnetic switching, the disconnection T-type permanent-magnetic switching answered carry out pressure regulation.
A kind of load ratio bridging switch regulator of distribution transformer provided by the invention uses permanent-magnetic switching and current limliting
The circulation of resistance controls, and automatic Transition converts the tune of distribution transformer under distribution transformer different exciting point tap mode
Press function.Permanent-magnetic switching of the invention completes the division function of high-tension circuit, and great advantage abandons that many and diverse, reliability is low
Spring operation (or electromagnetism) mechanism, using monostable permanent-magnetic switching, stroke is small, and no switch spring, compact-sized, the time of switch motion prolongs
Short late, operation dispersibility is small, and the service life for switching operation greatly improves.
Second aspect, the present invention provides a kind of load ratio bridging switch voltage-regulating systems of distribution transformer, including output electricity
Press detection unit, the first judging unit of output voltage range, output voltage range second judgment unit, the detection of permanent-magnetic switching on-off
Unit and pressure regulation unit；
The output voltage detection unit is used for after distribution transformer closes a floodgate, the automatic output electricity for detecting distribution transformer
Pressure；
First judging unit of output voltage range is for judging whether the output voltage of distribution transformer sets in system
In the fluctuation range that the coarse adjustment set allows；
The output voltage range second judgment unit is for judging whether the output voltage of distribution transformer sets in system
In the fluctuation range that the fine tuning set allows；
Whether the permanent-magnetic switching on-off detection unit is in the conductive state for detecting any K-type permanent-magnetic switching；
The pressure regulation unit is used for when output voltage is not in the fluctuation range that the fine tuning of system setting allows, from
Dynamic control load ratio bridging switch device, to carry out pressure regulation to distribution transformer.
Optionally, pressure regulation unit includes: zero passage detection unit, permanent-magnetic switching control unit and voltage value acquiring unit；
The zero passage detection unit is used to detect the mistake zero phase of distribution transformer output voltage；
The permanent-magnetic switching control unit is disconnected or is connected in expected phase for controlling permanent-magnetic switching；
The voltage value acquiring unit is for obtaining voltage value adjusted.
A kind of load ratio bridging switch voltage-regulating system of distribution transformer provided by the invention uses modular design concept, adds
Two voltage range judging unit zero passage detection units, permanent-magnetic switching control units are added to complete by tap switch control process
The flexible automatic Regulation process of distribution transformer, make pressure regulation process quickly, without grade is rushed, increase distribution transformer work stabilization
Property.
The third aspect, the present invention provides a kind of load ratio bridging switch pressure regulation method of distribution transformer, pressure regulation steps
It is as follows:
Step S1: the automatic output voltage values for obtaining distribution transformer；
Step S2: judge the output voltage of distribution transformer whether in the first voltage adjusting range that system allows；
Step S3: judge the output voltage of distribution transformer whether in the second voltage adjusting range that system allows；
Step S4: whether the K-type permanent-magnetic switching on detection pressure regulation direction is in the conductive state；
Step S5: enter on-load voltage regulation step if being not on state；
Step S6: process is jumped out after automatic acquisition voltage value if in the conductive state.
What is specifically detected in the step S4 is whether K-type permanent-magnetic switching in maximum or minimum excitation point tap circuit is located
In on state；On-load voltage regulation step in the step S5 refers to the automatic control step of the load ratio bridging switch of distribution transformer
Suddenly.
Optionally, steps are as follows for the on-load voltage regulation in the step S5:
Step S501: the zero passage detection of distribution transformer output signal is carried out；
Step S502: triggering T-type permanent-magnetic switching conducting；
Step S503: triggering K-type permanent-magnetic switching disconnects or conducting, adjusts the output voltage of distribution transformer；
Step S504: triggering disconnects T-type permanent-magnetic switching；
Step S505: the output voltage values of distribution transformer adjusted are obtained.
A kind of load voltage-regulating method of tap distribution transformer provided by the invention, is driven using monostable permanent-magnetic switching
Circuit completes switch driving, measurement voltage, detects it and cross zero phase, issues control command by logic and isolation circuit and adjusts automatically
Economize on electricity is depressed into the range of allowing output.Improve the qualification rate of transformer output voltage.The present invention provides real time correction function, solution
The certainly factors bring dispersion problem such as temperature change, switching mechanism aging, electric source disturbance controls school by zero passage detection step
Positive time compensation function guarantees in the time controllable precise extremely ± 0.1ms of switch division.The use of this method is very big in summary
Improve load ratio bridging switch work stability.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows a kind of the interior of the load ratio bridging switch regulator of distribution transformer of the offer of the embodiment of the present invention one
Portion's structure chart；
Fig. 2 shows in a kind of load ratio bridging switch regulator of distribution transformer of the offer of the embodiment of the present invention one
Portion's structural side view；
Fig. 3 shows a kind of the outer of the load ratio bridging switch regulator of distribution transformer of the offer of the embodiment of the present invention one
See effect picture；
The load ratio bridging switch voltage-regulating system that Fig. 4 shows a kind of distribution transformer of the offer of the embodiment of the present invention one is
System module map；
Fig. 5 shows a kind of stream of the load ratio bridging switch pressure regulation method of distribution transformer of the offer of the embodiment of the present invention one
Cheng Tu；
Fig. 6 show the embodiment of the present invention one offer a kind of distribution transformer load ratio bridging switch voltage-regulating system in adjust
Press the module map of unit；
Fig. 7 show the embodiment of the present invention one offer a kind of distribution transformer load ratio bridging switch pressure regulation method in have
The flow chart of voltage adjustment of on-load step；
Fig. 8 shows a kind of control of the load ratio bridging switch regulator of distribution transformer provided by Embodiment 2 of the present invention
Elementary diagram processed；
Fig. 9 shows a kind of stream of the load ratio bridging switch pressure regulation method of distribution transformer provided by Embodiment 2 of the present invention
Cheng Tu.
Appended drawing reference:
1- Current Transmit；2- permanent-magnetic switching K1；3- permanent-magnetic switching K2；4- permanent-magnetic switching K3；5- permanent-magnetic switching T1；6-
Current-limiting resistance R；7- permanent-magnet operating mechanism；8- auxiliary contact；9- high-tension cable combined plug；11- upper housing；12- switching tube pole
Column base plate；13- high-tension cable plate connector；10- output voltage detection unit；20- permanent-magnetic switching on-off detection unit；30-
The first judging unit of output voltage range；40- output voltage range second judgment unit；50- pressure regulation unit；501- zero passage detection
Unit；502- permanent-magnetic switching control unit；503- voltage value acquiring unit.
Specific embodiment
The present invention will be further described With reference to embodiment:
Referring to shown in attached drawing 1 to attached drawing 3, the embodiment of the present invention one provides a kind of load ratio bridging switch of distribution transformer
Regulator, including upper housing 11, switching tube pole base plate 12, high-tension cable plate connector 13, high-tension cable combined plug
9, Current Transmit, permanent-magnetic switching K1, permanent-magnetic switching K2, permanent-magnetic switching K3, permanent-magnetic switching T1；
The upper housing 11 is bolted to connection in the surface of the switching tube pole base plate 12；
The high-tension cable combined plug 9 is fixedly connected on 11 on the upper housing by high-tension cable plate connector 13；
The high-tension cable combined plug 9 is used to connect the high-tension cable of distribution transformer excitation point tap extraction；
The Current Transmit and permanent-magnetic switching K1, K2, K3, T1 are fixedly connected in the switching tube pole pedestal
12 on plate.
For the Reconstruction in field convenient for in-site installation and active service distribution transformer no load excitation tap switch, the embodiment of the present invention
It is external that the load ratio bridging switch regulator of one distribution transformer provided is all made of excitation point tap, with transformer body point
From.Device of the present invention by theory analysis select current-limiting resistance resistance value, can match tail portion in distribution transformer, in
Portion, end different type excitation divide the tap mode of connection.
Wherein, it is fixed with current-limiting resistance R on the switching tube pole base plate 12, the permanent-magnetic switching is divided into K-type permanent magnetism
Switch and T-type permanent-magnetic switching；The quantity of the T-type permanent-magnetic switching is 1, and the quantity of the K-type permanent-magnetic switching is 3.It is described
Permanent-magnetic switching K1 and permanent-magnetic switching K2 is arranged side by side, and the permanent-magnetic switching K3 and permanent-magnetic switching T1 are arranged side by side, and the electric current is mutual
Sensor CT and current-limiting resistance R is arranged side by side.
Wherein, the high-tension cable combined plug at horizontally arranged on the upper housing, insert by the high-tension cable combination
First 9 quantity is 3.
Wherein, the permanent magnet mechanism of the permanent-magnetic switching is made of Cr system alloy structure material steel.The Cr system of low cost closes
Golden structural steel makes the reduction of permanent-magnetic switching cost, more practical.
Wherein, the T-type permanent-magnetic switching and the current-limiting resistance are arranged side by side, the permanent-magnetic switching T1, current limliting electricity
Resistance R and the permanent-magnetic switching K3 are connected in the same circuit.
A kind of load ratio bridging switch regulator of distribution transformer provided by the invention using permanent-magnetic switching K1, K2, K3,
The control of the circulation of T1 and current-limiting resistance R, automatic conversion completes distribution transformer under distribution transformer excitation is divided in a manner of tap
Pressure regulation.Permanent-magnetic switching of the invention completes the division function of high-voltage excitation circuit, and stroke is small, tight without switch spring, structure
It gathers, the time delay of switch motion is short, operation dispersibility is small, high reliablity, makes to switch operation lifetime raising.
Referring to shown in attached drawing 4 and attached drawing 6, the embodiment of the present invention one provides a kind of on-load voltage regulation of tap distribution transformer
System, including output voltage detection unit 10, permanent-magnetic switching on-off detection unit 20, the first judging unit of output voltage range
30, output voltage range second judgment unit 40 and pressure regulation unit 50；
The output voltage detection unit 10 is used for after Transformer Close, the automatic output electricity for detecting distribution transformer
Pressure；
Whether the permanent-magnetic switching on-off detection unit 20 is in the conductive state for detecting any K-type permanent-magnetic switching；
Whether first judging unit of output voltage range 30 is used to judge the output voltage of distribution transformer in system
In the fluctuation range that the coarse adjustment of setting allows；
Whether the output voltage range second judgment unit 40 is used to judge the output voltage of distribution transformer in system
In the fluctuation range that the fine tuning of setting allows；
The pressure regulation unit 50 is used for when output voltage is not within the scope of the coarse adjustment of system setting and the fine tuning of permission
When, load ratio bridging switch is controlled automatically, to realize that distribution transformer carries out pressure regulation.
The pressure regulation unit 50 includes: that zero passage detection unit 501, permanent-magnetic switching control unit 502 and voltage value obtain
Unit 503；
The zero passage detection unit 501 is used to detect the mistake zero phase of distribution transformer output voltage；
The permanent-magnetic switching control unit 502 is disconnected or is connected for controlling permanent-magnetic switching；
The voltage value acquiring unit 503 is for obtaining voltage value adjusted.
Wherein, the host computer acquisition system comprising human interface that this system includes, hardware are configured to this field
Well known technology, the present invention repeat no more.
A kind of load ratio bridging switch voltage-regulating system for distribution transformer that the embodiment of the present invention one provides is set using modularization
Two meter theory, addition voltage range judging units keep pressure regulation process finer, increase the work when pressure regulation of distribution transformer excitation
Make stability.This system using modular design concept, be added to zero passage detection unit, permanent-magnetic switching control unit completes and matches
The flexible automatic Regulation process of piezoelectric transformer, keeps pressure regulation process finer, increases the stability of distribution transformer work.
Referring to shown in attached drawing 5 and attached drawing 7, the embodiment of the present invention one provides a kind of load ratio bridging switch tune of distribution transformer
Pressure method, steps are as follows for pressure regulation:
Step S1: the automatic output voltage values for obtaining distribution transformer；
Step S2: judge the output voltage of distribution transformer whether in the first voltage adjusting range that system allows；
Step S3: judge the output voltage of distribution transformer whether in the second voltage adjusting range that system allows；
Step S4: whether the K-type permanent-magnetic switching in minimum and maximum excitation tap circuit on detection pressure regulation direction has been located
In on state；
Step S5: enter corresponding on-load tap changer rate-determining steps if being not on state；
Step S6: process is jumped out after automatic acquisition voltage value if in the conductive state.
Step S501: the zero passage detection of distribution transformer output signal is carried out；
Step S502: triggering T-type permanent-magnetic switching conducting；
Step S503: triggering K-type permanent-magnetic switching disconnects or conducting, adjusts the output voltage of distribution transformer；
Step S504: triggering disconnects T-type permanent-magnetic switching；
Step S505: the output voltage values of distribution transformer adjusted are obtained.
The embodiment of the present invention one provide a kind of distribution transformer load ratio bridging switch pressure regulation method, by logic and every
Control command control tap switch movement is issued from circuit to automatically adjust voltage in the range of allowing output.Improve distribution
The qualification rate of transformer output voltage.This method controls correction time compensation function by zero passage detection step, guarantees switch point
The time controllable precise of conjunction, can accomplish in ± 0.1ms.Current-limiting resistance R is connected into control by triggering T-type permanent-magnetic switching conducting
Circuit stabilizes loop current before converting tap, keeps pressure regulation process more stably and controllable.
Referring to shown in attached drawing 8 and attached drawing 9, on the basis of example 1, invention further provides embodiments two
A kind of voltage-regulating system and pressure regulation method of the load ratio bridging switch of distribution transformer, its step are as follows:
Step S1: automatic output voltage values, the current value for obtaining distribution transformer U2；
Step S2: judge whether the output voltage U2 of distribution transformer is greater than 1.05Un；
Step S3: continue judge if being to be if result permanent-magnetic switching whether K1 be connected after enter step S31, if the result is negative
Then continue to judge to enter step S301 after whether U2 is less than 0.95Un.
Step S31: the actuation time of switch is calculated according to voltage, current data, closed T1 when controlling nought state；
Step S32: whether permanent-magnetic switching K2 is judged if the result permanent-magnetic switching K1 judged in step S3 is off-state
Conducting controls if being to be if result and disconnects permanent-magnetic switching K2, controls disconnect permanent-magnetic switching K3 if the result is negative；
Step S33: the actuation time of switch is calculated according to voltage, current data, permanent magnetism was closed when controlling nought state and opens
Close K1 or permanent-magnetic switching K2；
Step S34: control disconnects output voltage values, the current value of reacquisition distribution transformer U2 after permanent-magnetic switching T1.
Step S301: being to continue to judge whether permanent-magnetic switching K3 leads if U2 is less than 0.95Un if judging result in step S3
It is logical；
Step S302: then continue to judge whether permanent-magnetic switching K2 is connected if the result is negative；
Step S303: the actuation time of switch is calculated according to voltage, current data, closed T1 when controlling nought state；
Step S304: controlling if the result judged in step S302 is is and disconnect permanent-magnetic switching K2, if the result of judgement
Permanent-magnetic switching K1 is disconnected otherwise to control；
Step S305: the actuation time of switch is calculated according to voltage, current data, permanent magnetism was closed when controlling nought state and opens
Close K3 or permanent-magnetic switching K2；
Step S306: control disconnects output voltage values, the current value of reacquisition distribution transformer U2 after permanent-magnetic switching T2.
Voltage regulating mode in the present embodiment is the pressure regulation of end part tap, and control elementary diagram is shown in Fig. 7:
Range shown in dotted line is the load ratio bridging switch regulator of the distribution transformer of distribution transformer in Fig. 8.Attached drawing
In tap switch be permanent-magnetic switching K1, K2, K3, T1.Current-limiting resistance R and permanent-magnetic switching K2 are in the same circuit.Wherein forever
Magnetic switch K1, K2, K3, T1 are direct acting structure；Permanent-magnetic switching K1, K2, K3 do not allow to close simultaneously；When K1 is closed, a1a2,
B1b2, c1c2 are shorted, tap position 95%Un；When K2 is closed, a2a3, b2b3, c2c3 are shorted, tap position 100%Un；
When K3 is closed, a3a4, b3b4, c3c4 are shorted, tap position 105%Un.Wherein, in described permanent-magnetic switching K1, K2, K3, T1
Permanent magnet mechanism be made of low cost Cr system structural alloy steel.
A kind of load ratio bridging switch pressure regulation method of distribution transformer provided by Embodiment 2 of the present invention is end part tap
Current-limiting resistance R is connected into control circuit by triggering permanent-magnetic switching T1 conducting, is stablized before converting tap switch by voltage regulating mode
Loop current, by judging distribution transformer U2 voltage whether between 0.95Un and 1.05Un, triggering and conducting or disconnection are different
Permanent-magnetic switching, seal in different winding and carry out automatic Regulation, the embodiment of the present invention make pressure regulation process quickly, without impact.In addition
Include zero passage detection step control correction time compensation function when controlling permanent-magnetic switching conducting in the embodiment of the present invention, guarantees out
The time controllable precise closed is closed, man machine operation interface involved by system debug and communication interface are art technology
Technology contents known to personnel, it is not described here in detail.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of load ratio bridging switch regulator of distribution transformer, it is characterised in that: including upper housing, switching tube pole bottom
Seat board, high-tension cable plate connector, high-tension cable combined plug, current transformer and permanent-magnetic switching；
The upper housing is bolted to connection in the surface of the switching tube pole base plate；
The high-tension cable combined plug is fixedly connected on the upper housing by high-tension cable plate connector；The high-voltage electricity
Cable combined plug is for connecting high-tension cable；
The current transformer and permanent-magnetic switching are fixedly connected on the switching tube pole base plate；
The permanent-magnetic switching upper end is provided with outlet terminal for being connected to the high tension cable socket by high-voltage line；
Current-limiting resistance R is fixed on the switching tube pole base plate.
2. a kind of load ratio bridging switch regulator of distribution transformer according to claim 1, it is characterised in that: described
Permanent-magnetic switching is divided into K-type permanent-magnetic switching and T-type permanent-magnetic switching；The K-type permanent-magnetic switching is opened with the T-type permanent-magnetic switching described
It closes and is arranged side by side on pipe pole base plate, the quantity of the current-limiting resistance R is equal with the T-type permanent-magnetic switching quantity, the T-type
The quantity of permanent-magnetic switching is set as every phase 1 to 11, and the quantity of the K-type permanent-magnetic switching is set as every phase 3 to 13.
3. a kind of load ratio bridging switch regulator of distribution transformer according to claim 1, it is characterised in that: described
For high-tension cable combined plug at horizontally arranged on the upper housing, the quantity of the high-tension cable combined plug is set as 1
To any one of 6.
4. a kind of load ratio bridging switch regulator of distribution transformer according to claim 1, it is characterised in that: described
The permanent magnet mechanism of permanent-magnetic switching is made of Cr system alloy structure material steel.
5. a kind of load ratio bridging switch regulator of distribution transformer according to claim 2, it is characterised in that: described
T-type permanent-magnetic switching and the current-limiting resistance are arranged side by side, the T-type permanent-magnetic switching, the current-limiting resistance and any one of K
Type permanent-magnetic switching is connected in the same circuit.
6. a kind of load ratio bridging switch voltage-regulating system of distribution transformer, it is characterised in that: including output voltage detection unit, defeated
The first judging unit of voltage range, output voltage range second judgment unit, permanent-magnetic switching on-off detection unit and pressure regulation out
Unit；
The output voltage detection unit is used for after distribution transformer closes a floodgate, the automatic output voltage for detecting distribution transformer；
Whether first judging unit of output voltage range is used to judge the output voltage of distribution transformer in system setting
In the fluctuation range that coarse adjustment allows；
Whether the output voltage range second judgment unit is used to judge the output voltage of distribution transformer in system setting
In the fluctuation range that fine tuning allows；
Whether the permanent-magnetic switching on-off detection unit is in the conductive state for detecting any K-type permanent-magnetic switching；
The pressure regulation unit is used for when output voltage is not in the fluctuation range that the fine tuning of system setting allows, automatic to control
It is formed with on-load shunting switch device, to carry out pressure regulation to distribution transformer.
7. a kind of load ratio bridging switch voltage-regulating system of distribution transformer according to claim 6, it is characterised in that: described
Distribution transformer pressure regulation unit includes: zero passage detection unit, permanent-magnetic switching control unit and voltage value acquiring unit；
The zero passage detection unit is used to detect the mistake zero phase of distribution transformer output voltage and electric current；
The permanent-magnetic switching control unit is disconnected or is connected in expected phase for controlling permanent-magnetic switching；
The voltage value acquiring unit is for obtaining voltage value adjusted.
8. a kind of pressure regulation method of the load ratio bridging switch regulator of distribution transformer, which is characterized in that wanted applied to right
A kind of load ratio bridging switch regulator of any distribution transformer in 1 to 5 is sought, steps are as follows for pressure regulation:
Step S1: the automatic output voltage values for obtaining distribution transformer；
Step S2: judge the output voltage of distribution transformer whether in the first voltage adjusting range that system allows；
Step S3: judge the output voltage of distribution transformer whether in the second voltage adjusting range that system allows；
Step S4: whether the K-type permanent-magnetic switching on detection pressure regulation direction is in the conductive state；
Step S5: enter on-load voltage regulation step if being not on state；
Step S6: process is jumped out after automatic acquisition voltage value if in the conductive state.
9. a kind of pressure regulation method of the load ratio bridging switch regulator of distribution transformer according to claim 8, special
Sign is: steps are as follows for the on-load voltage regulation in the step S5:
Step S501: the zero passage detection of distribution transformer output signal is carried out；
Step S502: triggering T-type permanent-magnetic switching conducting；
Step S503: triggering K-type permanent-magnetic switching disconnects or conducting, adjusts the output voltage of distribution transformer；
Step S504: triggering disconnects T-type permanent-magnetic switching；
Step S505: the output voltage values of distribution transformer adjusted are obtained.
10. a kind of pressure regulation method of the load ratio bridging switch regulator of distribution transformer according to claim 9, special
Sign is: triggering T-type permanent-magnetic switching in the step S502 and step S504 and is turned on or off for sealing in T-type permanent-magnetic switching
And separation current-limiting resistance, stablize loop current when distribution transformer pressure regulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610811165.6A CN106229990B (en) | 2016-09-08 | 2016-09-08 | A kind of load ratio bridging switch regulator, the system and method for distribution transformer |
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| CN201610811165.6A CN106229990B (en) | 2016-09-08 | 2016-09-08 | A kind of load ratio bridging switch regulator, the system and method for distribution transformer |
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| DE102017215460A1 (en) | 2017-09-04 | 2019-03-07 | Siemens Aktiengesellschaft | Arrangement for connection to a high-voltage network with adjustable impedance |
| CN113593865B (en) * | 2021-06-24 | 2023-09-08 | 南京南瑞继保电气有限公司 | Split step-by-step on-load tap-changer and control method thereof |
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| CN106229990A (en) | 2016-12-14 |
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