CN202978205U - Control system for direct-current breaker chargers - Google Patents
Control system for direct-current breaker chargers Download PDFInfo
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- CN202978205U CN202978205U CN 201220701217 CN201220701217U CN202978205U CN 202978205 U CN202978205 U CN 202978205U CN 201220701217 CN201220701217 CN 201220701217 CN 201220701217 U CN201220701217 U CN 201220701217U CN 202978205 U CN202978205 U CN 202978205U
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- circuit breaker
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- 238000004891 communication Methods 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 230000011664 signaling Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 11
- 230000010355 oscillation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a control system for direct-current breaker chargers. The control system comprises an input module, an output module, a processor, a storage module and a communication module. An output end of the input module is connected with the processor, an input end of the output module, the storage module and the communication module are connected with the processor, an input end of the input module is connected with a charging current transformer CT, a direct-current feedback voltage circuit and a direct-current electrode control system, and an output end of the output module is connected with a silicon controlled trigger electrode in a direct-current breaker charger. The control system has the advantages that on the premise of realizing charging current and voltage control, recording of various states and fault diagnosis can be completed, and the technical shortcomings that no spare parts are reserved for direct-current breaker charging controllers in converter stations, the direct-current breaker charging controllers cannot be repaired and maintained, state maintenance cannot be realized and the like are effectively overcome.
Description
Technical field
The utility model belongs to the charging control field, refers to particularly a kind of dc circuit breaker charging device control system.
Background technology
Dc circuit breaker plays current transfer and cutout function as the core main equipment of current conversion station when the direct current transportation operational mode is changed, its reliability and stability directly determine the direct current system reliability of operation.AC circuit breaker uses SF6 arc blow-out mode to carry out arc extinguishing usually, can realize the cutout ability by effective arc extinguishing when the alternating current zero passage, dc circuit breaker also uses AC circuit breaker as its parts that stop, but because direct current does not have zero crossing, can't be by arc extinguishing by the electric arc that the arc blowing type circuit breaker produces, therefore can not simply use it to disconnect direct current, in the application of dc circuit breaker, use special dc circuit breaker charge circuit to match with the LC oscillation circuit, utilize the inductance of voltage on capacitor and oscillation circuit, fast disconnecting link and AC circuit breaker form the current oscillation loop, produce current zero-crossing point in DC loop, thereby make the direct current energy by effectively disjunction.Its principle as shown in Figure 1, R_high-charging device 20kV HV Terminal wherein, Udc-charging device and control loop, C-charging capacitor, L-oscillation circuit reactor, B-circuit breaker, S1-quick disconnecting link, R-zinc oxide arrester, wherein, charging capacitor C positive voltage terminal and DC bus and SF6 cutout B equipotential, the charging capacitor negative terminal is connected with reactor L through quick disconnecting link S1.Lightning arrester R is used for stabilizing the overvoltage of charge and discharge process.
During for the assurance breaker open operation, LC has enough energy discharge, must charge to capacitor in advance, at present charging device and controller thereof be all with primary equipment from external imported with original packaging, surpass more than 8 years the component aging bad stability because service life is long, except can not realizing that distant place charging is controlled, charging voltage can't reach the appointment requirement, and when causing capacitor discharge, the discharging current deficiency can not be offset the direct current transportation electric current on circuit breaker, can't realize the normal disjunction of circuit breaker.By failure reason analysis think charge controller work undesired due to.The problems referred to above, former external producer can't solve always, and is domestic alternative without Related product again, is to solve spare unit, eliminates fault, guarantees the normal operation of DC transmission system, carried out the research and development of this project.
The utility model content
The purpose of this utility model is to provide a kind of dc circuit breaker charging device control system in order to overcome above-mentioned deficiency.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of dc circuit breaker charging device control system, comprise input module, output module, processor, memory module and communication module, the output of described input module is connected with processor, described output module input, memory module and communication module all are connected with processor, and the input of described input module is connected with charging current instrument transformer CT, DC feedback potential circuit and dc pole control system in described dc circuit breaker charging device respectively; The output of described output module is connected with controllable silicon trigger electrode in described dc circuit breaker charging device.
Also be provided with an on the spot/distant place selector switch on described control system, the on the spot/output of distant place selector switch is connected with the input of described input module; Described output module also is connected with dc pole control system by the ST light signal, output DC feedback potential circuit feedback voltage signal, and described output module also is provided with the status indicator lamp signaling interface; Described memory module comprises parameter storage and charging device state message memory; Described communication module comprises wired communication interface and/or wireless communication interface.
Described input module also comprises standby current analog quantity Sampling Interface, and described output module also comprises the alarm signal output interface.
Described wired communication interface comprises RS232 serial ports, USB interface and CAN network interface.
Described status indicator lamp signaling interface is connected with a plurality of indicator lights, and described indicator light comprises power supply indicator, on the spot/distant place selector switch, charge condition indicator light and various alarm condition indicator light.
The beneficial effects of the utility model are to satisfy charging current, voltage-controlled while, can also realize various states record and failure diagnosis, effectively solve current conversion station dc circuit breaker charge controller without spare unit, can't keep in repair and detect, can't realize the technical bottleneck such as repair based on condition of component.
Description of drawings
Fig. 1 is the active superimposed oscillation operation principle of dc circuit breaker schematic diagram.
Fig. 2 is the connection diagram of the utility model and dc circuit breaker charging device.
Fig. 3 is theory diagram of the present utility model.
Fig. 4 is structural representation of the present utility model.
Embodiment
Further illustrate the utility model below in conjunction with drawings and Examples.
Embodiment: the utility model is a kind of dc circuit breaker charging device control system, comprises input module, output module, processor, memory module and communication module.
The output of input module is connected with processor; The input of input module is connected with an on the spot/distant place selector switch, be used for to control on the spot the switching with the two kinds of charging control models in a distant place; Input module is connected with charging current instrument transformer CT in the dc circuit breaker charging device by the current sample interface, be used for gathering the measurement electric current I ac of CT, be connected with the DC feedback potential circuit by the voltage sample interface, be used for gathering the charging feedback voltage, open incoming interface by 110V DC and be connected with dc pole control system, be used for gathering utmost point controlled charging and open into order; Input module also comprises standby current analog quantity Sampling Interface, is used for when the interface of above-mentioned input module breaks down emergent.
The input of output module is connected with processor; Output module is connected with controllable silicon trigger electrode in the dc circuit breaker charging device by controllable silicon gate signal interface, be used for the order of output trigger impulse controllable silicon is controlled triggering, be connected with dc pole control system by the ST light signal, be used for output DC feedback potential circuit feedback voltage signal, output module also comprises the alarm signal output interface, be used for sending without charge command and charge fault alarm signal, output module is provided with the status indicator lamp signaling interface in addition, is used for showing charged state and the various signal designation of dc circuit breaker charging device.
Memory module comprises parameter storage and charging device state message memory; Parameter storage is used for storage system operation definite value, and soon in dc circuit breaker, special parameter is stored in memory module, as the charging voltage bound, the voltage alarm value, charging current value etc., the storage of these parameters makes native system have versatility, can be applicable to different dc circuit breakers; Charging device state message memory is used for the malfunction of the running mode with event message is stored in memory module, so that operation maintenance.
Described communication module comprises wired communication interface and/or wireless communication interface, wired communication interface comprises RS232 serial ports, USB interface and CAN network interface, system realizes charging current, the storage of charging voltage definite value by the RS232 serial ports, realize charging logout inquiry output by USB interface, realize the teletransmission of charging event by the CAN network interface, wireless communication interface can be simplified the existing mode of connection greatly.
The course of work of the present utility model is: control system is carried out the initialization self check before step 1, begins following steps after the initialization self check:
Step 1: described input module gathers the signal in charging current instrument transformer CT, DC feedback potential circuit and dc pole control system in the dc circuit breaker charging device, compare the reference limiting value that is pre-stored in memory module by described processor, if surpass with reference to the limiting value scope, described processor is sent alarm signal by output module, if do not surpass with reference to the limiting value scope, turn step 2;
Step 2: described processor is by the setting of on the spot/distant place selector switch, differentiation is charge on the spot control model or distant place charging control model, the control model of charging on the spot in this way, and the initial charge feedback voltage of described DC feedback potential circuit surpasses 9V, described processor stops indicating set with the charging that arranges in processor, the expression electricity is full of, returns to step 1; If the charging feedback voltage of described DC feedback potential circuit turns next step below 5V; If the charging feedback voltage of described DC feedback potential circuit between 5-9V, keeps existing state; Distant place charging control model in this way, whether described processor is opened into order by the dc pole control system judgement charging that connects and is existed, turn in this way next step, do not exist if open into order, be provided with the predetermined judgement time, only surpassing the predetermined judgement time when not receiving charging and opening into order, described processor just sends without the charge command alarm signal by output module;
The described processor of step 3 stops indicating reset with the charging that arranges in processor, and expression is charged;
Step 4: described processor checks whether zero crossing of alternating voltage by described charging current instrument transformer, as zero crossing, exports the trigger impulse order by output module, otherwise forbids sending trigger command;
Step 5: described processor calculates SCR Trigger Angle according to the charging current value that is pre-stored in memory module;
Step 6: described processor triggers SCR control by output module according to the Trigger Angle that calculates, begin charging capacitor is charged, surpass 10S when the charging interval, the charging feedback voltage surpasses 2.5V, perhaps the charging interval is less than 10S, continue charging, otherwise described processor sends the charge fault alarm signal by output module.；
Step 7: return to step 1
the course of work of distant place charging control model is: distant place control switch is put " distant place " position on the spot, dc circuit breaker charging device control system triggers SCR control by output module after receiving utmost point control order, conducting 220V single phase alternating current power supply, transformer output 20kV high pressure charges to capacitor, the charging voltage of capacitor feeds back to dc circuit breaker charging device control system through the DC feedback potential circuit, dc circuit breaker charging device control system is delivered to dc pole control system with feedback voltage signal with the ST light signal, dc pole control system determines according to the direct current power of current DC transmission system transmission the charging voltage that the capacitor needs reach, when the charging feedback voltage reaches this value, dc circuit breaker charging device control system will be sent out controllable silicon and turn-off order, when feedback voltage to be charged slowly is down to the set point of dc pole control system permission, begin again to repeat above-mentioned charging process, so move in circles.
The course of work of the control model of charging on the spot is: distant place control switch is put " on the spot " position on the spot, more than initial charge, voltage directly charge to feedback voltage 9V, puts charging and stops being masked as " 1 ".When electric capacity slowly discharges, the charging feedback voltage begins again charging during lower than 5V, until the capacitor charging feedback voltage is returned to 9V again, and begins the another slow discharge charging process of taking turns, and so repeatedly goes on.
The above is only preferred embodiment of the present utility model, is not limited to the utility model.The content that is not described in detail in this specification belongs to the known prior art of this area professional and technical personnel.
Claims (5)
1. dc circuit breaker charging device control system, it is characterized in that: comprise input module, output module, processor, memory module and communication module, the output of described input module is connected with processor, described output module input, memory module and communication module all are connected with processor, and the input of described input module is connected with charging current instrument transformer CT, DC feedback potential circuit and dc pole control system in described dc circuit breaker charging device respectively; The output of described output module is connected with controllable silicon trigger electrode in described dc circuit breaker charging device.
2. dc circuit breaker charging device control system according to claim 1, it is characterized in that: also be provided with an on the spot/distant place selector switch on described control system, the on the spot/output of distant place selector switch is connected with the input of described input module; Described output module also is connected with dc pole control system by the ST light signal, output DC feedback potential circuit feedback voltage signal, and described output module also is provided with the status indicator lamp signaling interface; Described memory module comprises parameter storage and charging device state message memory; Described communication module comprises wired communication interface and/or wireless communication interface.
3. dc circuit breaker charging device control system according to claim 1, it is characterized in that: described input module also comprises standby current analog quantity Sampling Interface, and described output module also comprises the alarm signal output interface.
4. dc circuit breaker charging device control system according to claim 2, it is characterized in that: described wired communication interface comprises RS232 serial ports, USB interface and CAN network interface.
5. dc circuit breaker charging device control system according to claim 2, it is characterized in that: described status indicator lamp signaling interface is connected with a plurality of indicator lights, and described indicator light comprises power supply indicator, on the spot/distant place selector switch, charge condition indicator light and various alarm condition indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701217 CN202978205U (en) | 2012-12-17 | 2012-12-17 | Control system for direct-current breaker chargers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701217 CN202978205U (en) | 2012-12-17 | 2012-12-17 | Control system for direct-current breaker chargers |
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| Publication Number | Publication Date |
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| CN202978205U true CN202978205U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701217 Expired - Lifetime CN202978205U (en) | 2012-12-17 | 2012-12-17 | Control system for direct-current breaker chargers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022958A (en) * | 2012-12-17 | 2013-04-03 | 湖北省电力公司检修分公司 | Direct current circuit breaker charging device control system and control method thereof |
-
2012
- 2012-12-17 CN CN 201220701217 patent/CN202978205U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022958A (en) * | 2012-12-17 | 2013-04-03 | 湖北省电力公司检修分公司 | Direct current circuit breaker charging device control system and control method thereof |
| CN103022958B (en) * | 2012-12-17 | 2015-02-25 | 国家电网公司 | Direct current circuit breaker charging device control system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: MAINTENANCE BRANCH OF HUBEI ELECTRIC POWER COMPANY Effective date: 20130731 Owner name: MAINTENANCE BRANCH OF HUBEI ELECTRIC POWER COMPANY Free format text: FORMER OWNER: STATE ELECTRIC NET CROP. BEIJING XINENGDA TECHNOLOGY CO., LTD. Effective date: 20130731 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430050 WUHAN, HUBEI PROVINCE TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130731 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: MAINTENANCE BRANCH OF HUBEI ELECTRIC POWER Co. Patentee after: BEIJING XINENGDA TECHNOLOGY Co.,Ltd. Address before: 430050, Hubei province Wuhan city Hanyang District of Hubei province electric power company EHV power transmission company Patentee before: MAINTENANCE BRANCH OF HUBEI ELECTRIC POWER Co. Patentee before: State Grid Corporation of China Patentee before: BEIJING XINENGDA TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |