CN203761135U - Intelligent high-voltage switch - Google Patents

Intelligent high-voltage switch Download PDF

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Publication number
CN203761135U
CN203761135U CN201420029884.9U CN201420029884U CN203761135U CN 203761135 U CN203761135 U CN 203761135U CN 201420029884 U CN201420029884 U CN 201420029884U CN 203761135 U CN203761135 U CN 203761135U
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CN
China
Prior art keywords
circuit
intelligent
voltage
control
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420029884.9U
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Chinese (zh)
Inventor
周迭辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuhai Copower Electric Co Ltd
Original Assignee
Zhuhai Copower Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhuhai Copower Electric Co Ltd filed Critical Zhuhai Copower Electric Co Ltd
Priority to CN201420029884.9U priority Critical patent/CN203761135U/en
Application granted granted Critical
Publication of CN203761135U publication Critical patent/CN203761135U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model aims at providing an intelligent high-voltage switch, which has the advantages that the cost is low, the switch is safe and stable, electricity storage capacity is large, leakage current is small, the non-PT power supply technology is adopted, and the phenomenon that a monitoring dead zone appears due to long time wait in the power-on case when other energy storage ways are adopted can be effectively avoided. The intelligent high-voltage switch comprises an operating mechanism, a switch box, a three-phase high-voltage switch, a three-phase wire incoming device, a three-phase wire outgoing device, a system control terminal, and a capacitor step-down circuit, a protection and rectification circuit, a power supply conversion and battery charging circuit and a battery sequentially connected. After the three-phase wire incoming device introduces power supply-side high voltage to the switch box, step-down is carried out via the capacitor step-down circuit, current is rectified into direct current via the protection and rectification circuit, overvoltage protection is carried out, the direct current provides power for the system control end via the power supply conversion and battery charging circuit and the battery is charged and stores energy. The intelligent high-voltage switch can be applied to the technical field of intelligent high voltage control.

Description

Intelligent high-voltage switchgear
Technical field
The utility model relates to a kind of high-voltage switch gear, relates in particular to a kind of intelligent high-voltage switchgear that can be applicable to intelligent high-pressure control technology field.
Background technology
Along with setting up of electric network reconstruction and new electrical network, the high-voltage switch gear of 6KV-35KV has a large amount of market demands every year.In recent years, intelligent grid covers on a large scale, and original high-voltage switch gear has all started to be equipped with all kinds of intelligent controllers and realized Based Intelligent Control.But the work of intelligent controller and the breaking-closing operating of switch have all needed power supply supply.
At present, applying on the market maximum is to adopt PT(voltage transformer) online power taking technology powers, and makes voltage of high-voltage line be transformed into the required 220V of work or 110V voltage by voltage transformer.But, PT(voltage transformer) not only price is extremely expensive, and easily circuit is produced to resonance pollution, even can cause the phenomenons such as PT blast; Simultaneously, due to PT(voltage transformer) main raw material(s) be silicon steel sheet, copper enamelled wire and resin, if all online high-voltage switch gears in the whole nation all power to realize intellectuality by PT, that country will at least will expend approximately 450000 tons of above-mentioned raw material, the power consumption that is only steel-making use just will reach 4,500,000,000 degree, so realize without PT(voltage transformer) powering has very important significance.In addition, in prior art all can there is longer problem of the stand-by period that powers in the intelligent high-voltage switchgear of the single direct-on-line power taking technology of any employing, and this kind of problem can cause the phenomenon in observing and controlling dead band to occur, finally impact the stability that intelligent high-voltage switchgear uses.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, aim to provide a kind of cost compared with low, safety and stability, reserve of electricity is large, leakage current is little, adopt capacitance decompression technology and can effectively avoid adopting other energy storage mode to cause waiting as long for while powering on, and then occurs the intelligent high-voltage switchgear of observing and controlling dead band phenomenon.
The technical scheme that the utility model adopts is: the utility model comprises operating mechanism, switch casing, three-phase high-voltage switch, three-phase line leading device, three-phase outgoing line device and system control end, and the utility model also comprises capacity voltage dropping circuit, protection and rectification circuit, power conversion and the battery charging circuit and the storage battery that connect successively; Described three-phase line leading device is introduced mains side high pressure after described switch casing; first through described capacity voltage dropping circuit step-down; through described protection and rectification circuit, electric current is made into direct current and carries out overvoltage protection again, this direct current by described power conversion and battery charging circuit to described system control end power supply and to described charge in batteries energy storage.
Further, the utility model also comprises at least three phase current mutual inductors being arranged in described switch casing for gathering respectively three-phase current signal and for gathering at least one zero sequence current mutual inductor of zero sequence current signal, described phase current mutual inductor is all connected with described system control end signal with described zero sequence current mutual inductor.
Further, described system control end comprises microprocessor and is connected with described microprocessor signals analogy signal processing unit, switching signal processing unit, remote control unit, remote circuit control circuit, PDA communication unit, PDA power control unit, main website communication unit and threshold value setting unit.
Further, described protection and rectification circuit and described power conversion and battery charging circuit are arranged on the inside of described switch casing, and described storage battery is arranged on the outside of described switch casing.
Further, described power conversion and battery charging circuit can have two kinds of versions: a kind of for integral type structure, make one by power conversion and battery charging circuit; Another kind is split-type structural, i.e. power conversion and battery charging circuit split production.
The beneficial effects of the utility model are: because the utility model comprises operating mechanism, switch casing, three-phase high-voltage switch, three-phase line leading device, three-phase outgoing line device, system control end and the capacity voltage dropping circuit connecting successively, protection and rectification circuit, power conversion and battery charging circuit and storage battery, described three-phase line leading device is introduced mains side high pressure after described switch casing, first through described capacity voltage dropping circuit step-down, through described protection and rectification circuit, electric current is made into direct current and carries out overvoltage protection again, this direct current is through powering to described system control end by described power conversion and battery charging circuit and to described charge in batteries energy storage, so relatively existing PT power supply of the utility model, cost is lower, safety and stability, reserve of electricity is large, leakage current is little, and wait as long for the observing and controlling dead band phenomenon causing when well having replaced the online power supply technique of PT and effectively avoided adopting other energy storage mode to cause and power on by described storage battery with the online step-down power supply technique of electric capacity.
Further, described protection and rectification circuit and described power conversion and battery charging circuit are arranged on the inside of described switch casing, and described storage battery is arranged on the outside of described switch casing, concentrate so the utility model circuit is safeguarded, battery altering is convenient.
Brief description of the drawings
Fig. 1 is circuit structure block diagram of the present utility model;
Fig. 2 is the circuit structure block diagram of the control end of system described in the utility model.
Embodiment
as shown in Figure 1-2, the utility model comprises operating mechanism 1, switch casing 2, three-phase high-voltage switch 3, three-phase line leading device 4, three-phase outgoing line device 5, system control end 6 and capacity voltage dropping circuit 7, protection and rectification circuit 8, power conversion and the battery charging circuit 9 and the storage battery 10 that connect successively; Described protection and rectification circuit 8 and described power conversion and battery charging circuit 9 are arranged on the inside of described switch casing 2, and described storage battery 10 is arranged on the outside of described switch casing 2; Described power conversion and battery charging circuit 9 can have two kinds of versions: a kind of is integral type structure, make one by power conversion and battery charging circuit, and another kind is split-type structural, be power conversion and battery charging circuit split manufacture, above-mentioned two kinds of modes can be selected flexibly according to actual production and assemble flow; Described storage battery 10 has the advantages such as capacity is large, leakage current is little, puts into operation once be full of electricity, the wait of long period can avoid adopting powering on that other energy storage mode causes time and occur the defect in observing and controlling dead band; Described three-phase line leading device 4 is introduced mains side high pressure after described switch casing 2, first through described capacity voltage dropping circuit 7 step-downs, through described protection and rectification circuit 8, electric current is made into direct current and carries out overvoltage protection again, this direct current is through powering to described system control end 6 by described power conversion and battery charging circuit 9 and to described storage battery 10 charging energy-storings; The utility model also comprises three phase current mutual inductors 11 being arranged in described switch casing 2 for gathering respectively three-phase current signal and for gathering a zero sequence current mutual inductor 12 of zero sequence current signal, described phase current mutual inductor 11 is all connected with described system control end 6 signals with described zero sequence current mutual inductor 12; Analogy signal processing unit 61, switching signal processing unit 62, remote control unit 63, remote circuit control circuit 64, PDA communication unit 65, PDA power control unit 66, main website communication unit 67 and threshold value setting unit 68 that described system control end 6 comprises microprocessor 60 and is connected with described microprocessor 60 signals; Switching value signal, analog signal, working power are caused described system control end 6 by described three-phase outgoing line device 5, switching value signal is after described switching signal processing unit 62 is processed, detected by described microprocessor 60, analog signal, after described analogy signal processing unit 61 is processed, then is sampled by described microprocessor 60; Through comparative analysis, in the time that electric current exceedes threshold value, meet switch motion logic, can starting switch separating brake; Switch operation threshold can be arranged by described threshold value setting unit 68; The power supply of described microprocessor 60 can, from the online directly power supply of described power conversion and battery charging circuit 9, also can be powered from described storage battery 10 standby, so realize intelligent switch without dead band observing and controlling; The on/off of remote control unit 63 described in the utility model is controlled by described remote circuit control circuit 64; The on/off of described PDA communication unit 65 is controlled by PDA power control unit 66, can complete by described main website communication unit 67 with the communication of main website.
The utility model can be applicable to intelligent high-pressure control technology field.

Claims (4)

1. an intelligent high-voltage switchgear, comprise operating mechanism (1), switch casing (2), three-phase high-voltage switch (3), three-phase line leading device (4), three-phase outgoing line device (5) and system control end (6), it is characterized in that: described intelligent high-voltage switchgear also comprises capacity voltage dropping circuit (7), protection and rectification circuit (8), power conversion and the battery charging circuit (9) and the storage battery (10) that connect successively; Described three-phase line leading device (4) is introduced mains side high pressure after described switch casing (2); first through described capacity voltage dropping circuit (7) step-down; through described protection and rectification circuit (8), electric current is made into direct current and carries out overvoltage protection again, this direct current by described power conversion and battery charging circuit (9) to described system control end (6) power supply and to described storage battery (10) charging energy-storing.
2. intelligent high-voltage switchgear according to claim 1, it is characterized in that: described intelligent high-voltage switchgear also comprises and being arranged in described switch casing (2) for gathering respectively at least three phase current mutual inductors (11) of three-phase current signal and for gathering at least one zero sequence current mutual inductor (12) of zero sequence current signal, described phase current mutual inductor (11) is all connected with described system control end (6) signal with described zero sequence current mutual inductor (12).
3. intelligent high-voltage switchgear according to claim 1, is characterized in that: described system control end (6) comprises microprocessor (60) and the analogy signal processing unit (61) that is connected with described microprocessor (60) signal, switching signal processing unit (62), remote control unit (63), remote circuit control circuit (64), PDA communication unit (65), PDA power control unit (66), main website communication unit (67) and threshold value setting unit (68).
4. intelligent high-voltage switchgear according to claim 1; it is characterized in that: described protection and rectification circuit (8) and described power conversion and battery charging circuit (9) are arranged on the inside of described switch casing (2), and described storage battery (10) is arranged on the outside of described switch casing (2).
CN201420029884.9U 2014-01-17 2014-01-17 Intelligent high-voltage switch Expired - Fee Related CN203761135U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420029884.9U CN203761135U (en) 2014-01-17 2014-01-17 Intelligent high-voltage switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420029884.9U CN203761135U (en) 2014-01-17 2014-01-17 Intelligent high-voltage switch

Publications (1)

Publication Number Publication Date
CN203761135U true CN203761135U (en) 2014-08-06

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Application Number Title Priority Date Filing Date
CN201420029884.9U Expired - Fee Related CN203761135U (en) 2014-01-17 2014-01-17 Intelligent high-voltage switch

Country Status (1)

Country Link
CN (1) CN203761135U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108879971A (en) * 2018-06-06 2018-11-23 珠海博威电气股份有限公司 A kind of high power capacity electricity getting device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108879971A (en) * 2018-06-06 2018-11-23 珠海博威电气股份有限公司 A kind of high power capacity electricity getting device and method

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140806

Termination date: 20180117