CN103489600A - Solid-state capacitance-adjusting switch - Google Patents
Solid-state capacitance-adjusting switch Download PDFInfo
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- CN103489600A CN103489600A CN201310435883.4A CN201310435883A CN103489600A CN 103489600 A CN103489600 A CN 103489600A CN 201310435883 A CN201310435883 A CN 201310435883A CN 103489600 A CN103489600 A CN 103489600A
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Abstract
The invention discloses a solid-state capacitance-adjusting switch which comprises a switch (1), a first auxiliary switch (2), a second auxiliary switch (3) and an electronic switch combination electric appliance (4) which are connected in series. An anode of the switch (1) is connected with a cathode of the first auxiliary switch (2), the anode of the first auxiliary switch (2) and an anode of the second auxiliary switch (3) are in parallel connection with the electronic switch combination electric appliance (4), and a terminal B at the tail end of a transformer coil is formed in a stretching mode. A cathode of the second auxiliary switch (3) and the cathode of the first auxiliary switch (2) are in parallel connection with the other end of the electronic switch combination electric appliance (4), and a terminal A at the head end of the transformer coil is formed in a stretching mode. The switch is simple in structure, reliable in operation, capable of effectively protecting an on-load capacitance-adjusting power distribution transformer, free of regular maintenance, free of arc operation and capable of reducing accidents.
Description
Technical field
The invention belongs to the electrical engineering technical field, relate to a kind of solid-state capacitance switch, this device is applicable to the operating capacity regulating of loading capacitance-regulating distribution transformer.
Background technology
Loading capacitance-regulating distribution transformer is a kind of novel energy-conserving transformer with two kinds of rated capacities of size, it can effectively solve seasonal strong, the problem such as the peak valley difference is large, loss is serious of power distribution network load, is widely used at present the areas such as downtown that rural area and load fluctuation are larger, development zone, industrial area.Its capacity transfer principle is mainly to realize by the bind mode of loaded capacity-regulated switch change distribution transformer winding.At present existing capacitance switch is mainly the oil switch that adopts traditional mechanical adjustment mode, its complex structure is bulky, when switching, distribution transformer capacity easily produces electric arc, there are the shortcomings such as governing speed is slow, mechanical endurance is low, poor reliability, and need regularly, to the insulating oil maintenance that has a power failure, to be not suitable for the frequent operation use; And prior art all can't be when capacitance switch breaks down the reliably protecting distribution transformer; especially when transformer need be by low capacity during to large capacity regulating; once capacity transfer is unsuccessful; to cause distribution transformer can only be operated under low capacity; gently make transformer overload, heavy burn damage accident.
Summary of the invention
The technical problem to be solved in the present invention is that the defect existed for prior art, provide a kind of improved solid-state capacitance switch, uses it should complete the change of transformer high-low-voltage winding connection way.And it also should have without oiling, volume is little, the life-span is high, governing speed is fast characteristics; and can provide a kind of backup protection; once the capacity transfer main switch breaks down; it can return to loading capacitance-regulating distribution transformer large capacity status in time, to guarantee distribution transformer, can not transship damage accident.
Technical scheme of the present invention is, described solid-state capacitance switch, and referring to accompanying drawing 1, it comprises that the switch 1, first of series connection successively is auxiliary auxiliary with switch 3 with switch 2, second, and electronic switch combination electrical equipment 4.Above-mentioned switch 1 series connection first is auxiliary forms the main switch loop with switch 2.Above-mentioned electronic switch combination electrical equipment 4 is second servo loop.Described main switch loop is auxiliary with switch 3 with described second servo loop in parallel second.The positive pole of wherein said switch 1 connects the described first auxiliary negative pole with switch 2; The described first auxiliary positive pole with switch 2 and described second assists the described electronic switch that is connected in parallel of the positive pole with switch 3 to combine an end the peripheral hardware Transformer Winding tail end terminals B that extends out of electrical equipment 4; The described second auxiliary negative pole with switch 3 and described first assists the described electronic switch that is connected in parallel of the negative pole with switch 2 to combine the other end the peripheral hardware Transformer Winding head end terminals A that extends out of electrical equipment 4.
Operation principle of the present invention is: during solid-state capacitance switch normal operation, referring to Fig. 1, the first auxiliary use switch 2 is closure state, and the second auxiliary use switch 3 is off-state, whole capacity transfer process is completed by switch 1, between three switches, adopts the mechanical interlocking mode to form interlock.When solid-state capacitance switch need to just normally closedly close the ∕ opening operation, during at first by this solid-state capacity transfer switch, the capacity transfer controller of related loading capacitance-regulating distribution transformer sends trigger command, trigger the reverse parallel connection thyristor switch group conducting of electronic switch combination electrical equipment 4, loop current is transferred in electronic switch combination electrical equipment 4, switch 1 starts He Zha ∕ separating brake subsequently, in conducting state, so do not produce electric arc during switch 1 action due to the electric current in whole loop now.After switch 1 completes and closes lock ∕ separating brake action, the trigger command of electronic switch combination electrical equipment 4 is cancelled, subsequently, current zero-crossing point for the first time, electronic switch combination electrical equipment 4 disconnects, and whole opening closed closed ∕ disconnection process and completed.And in the process of regulating at distribution transformer capacity, once switch 1 breaks down, after the time delay of regulation, its mechanical interlocks will drive the first auxiliary switch 2 of using and start separating brakes by switch 1 cut-out, drive second simultaneously and auxiliary with switch 3, start combined floodgate, and report to the police to the capacity transfer controller of loading capacitance-regulating distribution transformer, the solid-state capacitance switch of prompting staff breaks down, after this second auxiliary by switch 3 alternative switch 1, complete the capacity transfer instruction, above-mentioned loading capacitance-regulating distribution transformer is automatically restored to large capacity status.
Come therefrom, the present invention has produced following beneficial effect:
1), simple in structure, reliable;
2), a kind of backup protection switch is provided, can when capacitance switch breaks down, loading capacitance-regulating distribution transformer be automatically restored to large capacity status, effectively protect loading capacitance-regulating distribution transformer;
3), the life-span is high, and without regularly being safeguarded and overhauling;
4), whole capacity transfer process implementation without the electric arc operation, reduced the probability that insulation fault occurs.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is a specific embodiment of the solid-state capacitance switch of the present invention is denoted as in figure:
1-switch,
The 2-the first auxiliary switch of using,
The 3-the second auxiliary switch of using
4-electronic switch combination electrical equipment.
Embodiment
Referring to accompanying drawing 1, this embodiment of the solid-state capacitance switch of the present invention comprises that the switch 1, first of series connection successively is auxiliary auxiliary with switch 3 with switch 2, second, and electronic switch combination electrical equipment 4.Switch wherein 1, first is auxiliary, and with the auxiliary type of the RW7-12/100 with the mechanical interlocks on-load switch of all selecting the production of Chinese Changsha San You Utilities Electric Co., Ltd. with switch 3 of switch 2, second, rated operational voltage is 12kV, and rated operational current is 100A; The MID5-10 type reverse parallel connection thyristor electronic switch combination unit that electronic switch combination electrical equipment 4 adopts Hunan China Hunan electric test research institute to develop.Described switch 1, first is auxiliary combines electrical equipment 4 by technique scheme with switch 2, second is auxiliary with switch 3 and electronic switch, with reference to connected mode shown in accompanying drawing 1, connects to form solid-state capacitance switch.Wherein the positive pole of switch 1 connects the first auxiliary negative pole with switch 2; The first auxiliary positive pole with switch 2 and second an auxiliary end of using the positive pole electronic switch combination in parallel electrical equipment 4 of switch 3, and the peripheral hardware Transformer Winding tail end terminals B that extends out; The second auxiliary negative pole with switch 3 and the first auxiliary other end of using the negative pole electronic switch combination in parallel electrical equipment 4 of switch 2, and the peripheral hardware Transformer Winding head end terminals A that extends out.
The of the present invention solid-state capacitance switch of said structure, be proved to be respond well through manufacturing experimently to try out, and convenient while being used in loading capacitance-regulating distribution transformer, safety, reliable, reach designing requirement fully.
Claims (1)
1. a solid-state capacitance switch, it is characterized in that, it comprises switch (1), first auxiliary switch (2), the second auxiliary switch (3) of using used of series connection successively, and electronic switch combination electrical equipment (4), the positive pole of wherein said switch (1) connects the described first auxiliary negative pole with switch (2); The described first auxiliary positive pole with switch (2) and described second assists the described electronic switch that is connected in parallel of the positive pole with switch (3) to combine an end the peripheral hardware Transformer Winding tail end terminals B that extends out of electrical equipment (4); The described second auxiliary negative pole with switch (3) and described first assists the described electronic switch that is connected in parallel of the negative pole with switch (2) to combine the other end the peripheral hardware Transformer Winding head end terminals A that extends out of electrical equipment (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435883.4A CN103489600B (en) | 2013-09-23 | 2013-09-23 | Solid-state capacitance-adjustinswitch switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435883.4A CN103489600B (en) | 2013-09-23 | 2013-09-23 | Solid-state capacitance-adjustinswitch switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103489600A true CN103489600A (en) | 2014-01-01 |
| CN103489600B CN103489600B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310435883.4A Active CN103489600B (en) | 2013-09-23 | 2013-09-23 | Solid-state capacitance-adjustinswitch switch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130707A (en) * | 1990-09-21 | 1992-05-01 | Hitachi Ltd | Tie transformer |
| CN102779667A (en) * | 2012-07-21 | 2012-11-14 | 山东大学 | On-load tap-changer |
| CN103019284A (en) * | 2012-12-27 | 2013-04-03 | 山东大学 | Load tap-changer with thyristor auxiliary |
| CN203456263U (en) * | 2013-09-23 | 2014-02-26 | 国家电网公司 | Solid-state capacitance-modulating switch |
-
2013
- 2013-09-23 CN CN201310435883.4A patent/CN103489600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130707A (en) * | 1990-09-21 | 1992-05-01 | Hitachi Ltd | Tie transformer |
| CN102779667A (en) * | 2012-07-21 | 2012-11-14 | 山东大学 | On-load tap-changer |
| CN103019284A (en) * | 2012-12-27 | 2013-04-03 | 山东大学 | Load tap-changer with thyristor auxiliary |
| CN203456263U (en) * | 2013-09-23 | 2014-02-26 | 国家电网公司 | Solid-state capacitance-modulating switch |
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| Publication number | Publication date |
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| CN103489600B (en) | 2015-12-23 |
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Effective date of registration: 20180727 Address after: 410004 398 new Shao Dong Road, Tianxin District, Changsha, Hunan Co-patentee after: Power Science Research Institute of Hunan Electric Power Co., Ltd. Patentee after: State Grid Hunan Electric Power Co., Ltd. Co-patentee after: State Grid Corporation of China Address before: 100033 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Co-patentee before: Electric Power Research Institute, State Grid Hunan Electric Power Company Patentee before: State Grid Corporation of China Co-patentee before: Hunan Xiangdian Electric Power Text & Research Co., Ltd. |