CN203813507U - PLC-based power supply emergency switching device for transformer station - Google Patents
PLC-based power supply emergency switching device for transformer station Download PDFInfo
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- CN203813507U CN203813507U CN201420110462.4U CN201420110462U CN203813507U CN 203813507 U CN203813507 U CN 203813507U CN 201420110462 U CN201420110462 U CN 201420110462U CN 203813507 U CN203813507 U CN 203813507U
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- 230000009471 action Effects 0.000 claims abstract description 19
- 230000001131 transforming effect Effects 0.000 claims description 28
- 230000011664 signaling Effects 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 239000003921 oil Substances 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a PLC-based power supply emergency switching device for a transformer station. The PLC-based power supply emergency switching device comprises a programmable controller, and bus detection circuits, an inlet wire power supply detection circuit, circuit breaker control circuits, circuit breaker position signal acquisition circuits, circuit breaker control intermediate relay circuits, circuit breaker switching-closing indicating circuits and an emergency switching action reset circuit which are respectively connected with the programmable controller, and circuit breaker circuits connected with the circuit breaker control intermediate relay circuits. According to the PLC-based power supply emergency switching device for the transformer station, the defects of high failure rate, low reliability and poor security and the like in the prior art can be overcome, and the advantages of low failure rate, high reliability and good security can be achieved.
Description
Technical field
The utility model relates to electrical equipment technical field, particularly, relates to a kind of transforming plant source spare power of realizing based on PLC.
Background technology
Standby throwing is the abbreviation that stand-by power supply drops into automatically, is a kind of automatic safety device that is intended to improve power supply reliability, can realize electricity consumption side and after main power supply interruption of power supply, switch to rapidly the function that stand-by power supply is powered.Substation Station is prerequisite and the basis of substation safety stable operation with the safe and reliable operation of power supply.Substation Station can be two arbitrary road, the way station electricity consumption source power failure in the situation that for throwing system with power supply, automatically switch to rapidly another way station Power supply, ensure the uninterrupted power supply with load to Substation Station, therefore, Substation Station is most important to the safe and stable operation of transformer station for throwing system with power supply.
Substation Station adopts single-trunk segmental wiring mode (see figure 1) conventionally with electric supply system, and two way station electricity consumption sources are connected on respectively on two sections of buses, conventionally have two kinds of operational modes:
1: two section of bus fanout operation of operational mode (section breaker QF3 disconnection), two way station electricity consumption sources are respectively to load for two sections of bussed supplies tape station (two-way lead-in circuit breaker QF1, QF2 close).
2: two sections of bus paired runnings of operational mode (section breaker QF3 closes), all loads for station of the two arbitrary road operation in way station electricity consumption source bands, another is power backup (two-way lead-in circuit breaker QF1 closes, QF2 disconnects or QF1 disconnects, QF2 closes) for way station.
For ensureing the reliable power supply of Substation Station power supply, electric power system 110kV and above transformer station are all designed with station power supply for throwing system.
At present, Substation Station is relay type device with power supply for throwing system majority, due to the problem of design, the existence of installation aspect, or along with moving the increase of the time limit, indivedual Substation Stations just have problems for throwing system with power supply at the beginning of transformer station puts into operation, most Substation Stations for throwing system fault after transformer station puts into operation the several years, are having a strong impact on the safe and stable operation of transformer station with power supply.Relay type Substation Station is many with power supply spare power components and parts used, and wiring complexity is installed, and operational reliability is low.
Realizing in process of the present utility model, inventor finds at least to exist in prior art that failure rate is high, reliability is low and the defect such as poor stability.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes a kind of transforming plant source spare power of realizing based on PLC, to realize failure rate is low, reliability is high and fail safe is good advantage.
For achieving the above object, the technical solution adopted in the utility model is: a kind of transforming plant source spare power of realizing based on PLC, comprise Programmable Logic Controller, the bus testing circuit, incoming power testing circuit, breaker control circuit, circuit breaker position signal acquisition circuit, breaker control auxiliary relay circuit, circuit-breaker switching on-off indicating circuit and the standby throwing action involution circuit that are connected with Programmable Logic Controller respectively, and the breaker circuit being connected with described breaker control auxiliary relay circuit.
Further, described bus testing circuit, comprises that the bus that is connected to respectively described Programmable Logic Controller has the testing circuit of pressure and bus loss of pressure testing circuit.
Further, described incoming power testing circuit, comprises that the incoming power that is connected to described Programmable Logic Controller has pressure testing circuit.
Further, described breaker control circuit, comprises the manual divide-shut brake control circuit of circuit breaker Q F1, the manual divide-shut brake control circuit of circuit breaker Q F2 and the manual divide-shut brake control circuit of circuit breaker Q F3 that are connected to respectively described Programmable Logic Controller.
Further, described circuit breaker position signal acquisition circuit, comprises the circuit breaker Q F1 position signalling testing circuit, circuit breaker Q F2 position signalling testing circuit and the circuit breaker Q F3 position signalling testing circuit that are connected to respectively described Programmable Logic Controller.
Further, described breaker control auxiliary relay circuit, comprises the circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and the circuit breaker Q F3 divide-shut brake control auxiliary relay that are connected with described Programmable Logic Controller respectively.
Further, described breaker circuit, comprises circuit breaker Q F1, the circuit breaker Q F2 and the circuit breaker Q F3 that are connected with described circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and circuit breaker Q F3 divide-shut brake control auxiliary relay respectively.
Further, described circuit breaker Q F1, is specially lead-in circuit breaker QF1; Described circuit breaker Q F2, is specially lead-in circuit breaker QF2; Described circuit breaker Q F3, is specially section breaker QF3.
Further, described circuit-breaker switching on-off indicating circuit, comprises the circuit breaker Q F1 divide-shut brake indicating circuit, circuit breaker Q F2 divide-shut brake indicating circuit and the circuit breaker Q F3 divide-shut brake indicating circuit that are connected with described Programmable Logic Controller respectively.
The described standby action involution circuit of throwing, comprises standby actuating signal involution circuit and the standby action indicating circuit of throwing thrown being connected with described Programmable Logic Controller respectively.
Further, the model of described Programmable Logic Controller is FX2N-48MR.
The transforming plant source spare power of realizing based on PLC of the each embodiment of the utility model, owing to comprising Programmable Logic Controller, the bus testing circuit, incoming power testing circuit, breaker control circuit, circuit breaker position signal acquisition circuit, breaker control auxiliary relay circuit, circuit-breaker switching on-off indicating circuit and the standby throwing action involution circuit that are connected with Programmable Logic Controller respectively, and the breaker circuit being connected with breaker control auxiliary relay circuit; Can realize the self adaptation to Substation Station system operation mode, guarantee uninterrupted power supply and the safe and stable operation of Substation Station power supply, realize the operation control to Substation Station system simultaneously; Thereby can overcome, in prior art, failure rate is high, reliability is low and the defect of poor stability, to realize failure rate is low, reliability is high and fail safe is good advantage.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the winding diagram of existing transforming plant source power supply system;
Fig. 2 is the decompression testing circuit winding diagram that in the transforming plant source spare power of the utility model based on PLC realization, voltage relay is realized;
Fig. 3 is lead-in circuit breaker QF1(or QF2 in the transforming plant source spare power of the utility model based on PLC realization) separating brake action logic figure;
Fig. 4 is lead-in circuit breaker QF1(or QF2 in the transforming plant source spare power of the utility model based on PLC realization) feed motion logic diagram;
Fig. 5 is section breaker QF3 feed motion logic diagram in the transforming plant source spare power of the utility model based on PLC realization;
Fig. 6 is the hardware block diagram of the transforming plant source spare power of the utility model based on PLC realization.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
PLC, as universal industrial control computer, has been widely used in the industry-by-industries such as iron and steel, oil, chemical industry, electric power, building materials, machine-building, automobile, light textile, traffic fortune and entertainment at home and abroad.But consulting related data does not also find to realize standby device and the application example of throwing function of Substation Station power supply based on PLC intelligence.
The problem existing with power supply spare power for Substation Station, according to the utility model embodiment, as shown in Fig. 2-Fig. 6, a kind of transforming plant source spare power of realizing based on PLC is provided, taking into full account under the prerequisite of the various operational modes of transformer station's station power source system, by reasonable establishment PLC program, realize the self adaptation to Substation Station system operation mode, guarantee uninterrupted power supply and the safe and stable operation of Substation Station power supply, realize the operation control to Substation Station system simultaneously.
The transforming plant source spare power that should realize based on PLC, there is intelligence and realize the standby function of throwing of Substation Station power supply, by reasonable establishment PLC program, can the automatic decision Substation Station using electricity system mode of connection, and automatically adjust accordingly Substation Station power supply for throwing action policy, ensure uninterrupted power supply and the safe and reliable operation of Substation Station power supply, realize the operation control to Substation Station system simultaneously.The transforming plant source spare power that should realize based on PLC, compared with relay type device, has the advantages such as volume is little, lightweight, installation wiring is simple, reliable, flexible, and O&M maintenance workload is little.
The transforming plant source spare power of realizing based on PLC of the present embodiment, without the station power source system control loop wiring of existing transformer station is changed, only need two way station electricity consumption source inputs and this device of output access, its key technology is: 1. intelligence realizes the standby function of throwing of Substation Station power supply; 2. realize the operation control to Substation Station system.
Referring to Fig. 6, the transforming plant source spare power of realizing based on PLC of the present embodiment, comprise Programmable Logic Controller, the bus testing circuit, incoming power testing circuit, breaker control circuit, circuit breaker position signal acquisition circuit, breaker control auxiliary relay circuit, circuit-breaker switching on-off indicating circuit and the standby throwing action involution circuit that are connected with Programmable Logic Controller respectively, and the breaker circuit being connected with breaker control auxiliary relay circuit.The model of Programmable Logic Controller is FX2N-48MR.
Wherein, above-mentioned bus testing circuit, comprises that the bus that is connected to respectively Programmable Logic Controller has the testing circuit of pressure and bus loss of pressure testing circuit.Incoming power testing circuit, comprises that the incoming power that is connected to Programmable Logic Controller has pressure testing circuit.
Above-mentioned breaker control circuit, comprises the manual divide-shut brake control circuit of circuit breaker Q F1, the manual divide-shut brake control circuit of circuit breaker Q F2 and the manual divide-shut brake control circuit of circuit breaker Q F3 that are connected to respectively Programmable Logic Controller.Circuit breaker position signal acquisition circuit, comprises the circuit breaker Q F1 position signalling testing circuit, circuit breaker Q F2 position signalling testing circuit and the circuit breaker Q F3 position signalling testing circuit that are connected to respectively Programmable Logic Controller.
Above-mentioned breaker control auxiliary relay circuit, comprises the circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and the circuit breaker Q F3 divide-shut brake control auxiliary relay that are connected with Programmable Logic Controller respectively.Breaker circuit, comprises circuit breaker Q F1, the circuit breaker Q F2 and the circuit breaker Q F3 that are connected with circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and circuit breaker Q F3 divide-shut brake control auxiliary relay respectively.Circuit breaker Q F1, is specially lead-in circuit breaker QF1; Circuit breaker Q F2, is specially lead-in circuit breaker QF2; Circuit breaker Q F3, is specially section breaker QF3.
Above-mentioned circuit-breaker switching on-off indicating circuit, comprises the circuit breaker Q F1 divide-shut brake indicating circuit, circuit breaker Q F2 divide-shut brake indicating circuit and the circuit breaker Q F3 divide-shut brake indicating circuit that are connected with Programmable Logic Controller respectively; The standby action involution circuit of throwing, comprises standby actuating signal involution circuit and the standby action indicating circuit of throwing thrown being connected with Programmable Logic Controller respectively.
The above-mentioned transforming plant source spare power of realizing based on PLC, mainly comprise decompression testing circuit, incoming power testing circuit, breaker control circuit, circuit breaker position signal acquisition circuit, breaker control auxiliary relay circuit, circuit-breaker switching on-off indicating circuit and standbyly throw action involution circuit, and the breaker circuit being connected with described breaker control auxiliary relay circuit (can referring to Fig. 6).Be described in detail as follows:
(1) decompression testing circuit (referring to Fig. 2):
Voltage relay 1YJ, 2YJ, 3YJ(or 4YJ, 5YJ, 6YJ) be used for whether decompression of testing bus, voltage relay 7YJ, 8YJ(or 9YJ, 10YJ) be used for detecting incoming power and whether have electricity.
(2) circuit breaker action logic:
1. lead-in circuit breaker QF1(or QF2) action logic, lead-in circuit breaker QF1(or QF2) separating brake action logic is referring to Fig. 3, and feed motion logic is referring to Fig. 4.
2. section breaker QF3 action logic: section breaker QF3 feed motion logic is shown in Fig. 5.
(3) PLC selects and the standby system hardware composition of throwing
According to controlling requirement, the FX2N-48MR type PLC that selects Mitsubishi to produce, its I/O point is 24 to enter/24 go out, and is output as relay form, can meet control requirement, does not need expansion module.Because PLC contact capacity is little, so consider with auxiliary relay as starting divide-shut brake element.
In sum, the transforming plant source spare power of realizing based on PLC of the utility model the various embodiments described above, at least can reach following beneficial effect:
(1) have intellectuality, installation and maintenance are simplified and the advantage such as reliable, flexible;
(2) can the automatic decision Substation Station using electricity system mode of connection, and automatically adjust accordingly for throwing action policy, realize the self adaptation to Substation Station system operation mode, ensure uninterrupted power supply and the safe and reliable operation of Substation Station power supply, realize the operation control to Substation Station system simultaneously, and the station power source system control loop wiring of existing transformer station is not changed;
(3) can popularize application in an all-round way in all kinds of of power industry, change, power distribution station, and can promote the use of other and need to realize standby industry and the industrial enterprise of throwing power supply of low-voltage dual power, popularizing application prospect is wide.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a transforming plant source spare power of realizing based on PLC, it is characterized in that, comprise Programmable Logic Controller, the bus testing circuit, incoming power testing circuit, breaker control circuit, circuit breaker position signal acquisition circuit, breaker control auxiliary relay circuit, circuit-breaker switching on-off indicating circuit and the standby throwing action involution circuit that are connected with Programmable Logic Controller respectively, and the breaker circuit being connected with described breaker control auxiliary relay circuit.
2. the transforming plant source spare power of realizing based on PLC according to claim 1, is characterized in that, described bus testing circuit comprises that the bus that is connected to respectively described Programmable Logic Controller has the testing circuit of pressure and bus loss of pressure testing circuit.
3. the transforming plant source spare power of realizing based on PLC according to claim 1, is characterized in that described incoming power testing circuit comprises that the incoming power that is connected to described Programmable Logic Controller has pressure testing circuit.
4. the transforming plant source spare power of realizing based on PLC according to claim 1, it is characterized in that, described breaker control circuit, comprises the manual divide-shut brake control circuit of circuit breaker Q F1, the manual divide-shut brake control circuit of circuit breaker Q F2 and the manual divide-shut brake control circuit of circuit breaker Q F3 that are connected to respectively described Programmable Logic Controller.
5. the transforming plant source spare power of realizing based on PLC according to claim 1, it is characterized in that, described circuit breaker position signal acquisition circuit, comprises the circuit breaker Q F1 position signalling testing circuit, circuit breaker Q F2 position signalling testing circuit and the circuit breaker Q F3 position signalling testing circuit that are connected to respectively described Programmable Logic Controller.
6. the transforming plant source spare power of realizing based on PLC according to claim 1, it is characterized in that, described breaker control auxiliary relay circuit, comprises the circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and the circuit breaker Q F3 divide-shut brake control auxiliary relay that are connected with described Programmable Logic Controller respectively.
7. the transforming plant source spare power of realizing based on PLC according to claim 6, it is characterized in that, described breaker circuit, comprises circuit breaker Q F1, the circuit breaker Q F2 and the circuit breaker Q F3 that are connected with described circuit breaker Q F1 divide-shut brake control auxiliary relay, circuit breaker Q F2 divide-shut brake control auxiliary relay and circuit breaker Q F3 divide-shut brake control auxiliary relay respectively.
8. the transforming plant source spare power of realizing based on PLC according to claim 7, is characterized in that described circuit breaker Q F1 is specially lead-in circuit breaker QF1; Described circuit breaker Q F2, is specially lead-in circuit breaker QF2; Described circuit breaker Q F3, is specially section breaker QF3.
9. the transforming plant source spare power of realizing based on PLC according to claim 1, it is characterized in that, described circuit-breaker switching on-off indicating circuit, comprises the circuit breaker Q F1 divide-shut brake indicating circuit, circuit breaker Q F2 divide-shut brake indicating circuit and the circuit breaker Q F3 divide-shut brake indicating circuit that are connected with described Programmable Logic Controller respectively;
The described standby action involution circuit of throwing, comprises standby actuating signal involution circuit and the standby action indicating circuit of throwing thrown being connected with described Programmable Logic Controller respectively.
10. according to the transforming plant source spare power of realizing based on PLC described in any one in claim 1-9, it is characterized in that, the model of described Programmable Logic Controller is FX2N-48MR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110462.4U CN203813507U (en) | 2014-03-12 | 2014-03-12 | PLC-based power supply emergency switching device for transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110462.4U CN203813507U (en) | 2014-03-12 | 2014-03-12 | PLC-based power supply emergency switching device for transformer station |
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| Publication Number | Publication Date |
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| CN203813507U true CN203813507U (en) | 2014-09-03 |
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| CN201420110462.4U Expired - Fee Related CN203813507U (en) | 2014-03-12 | 2014-03-12 | PLC-based power supply emergency switching device for transformer station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887873A (en) * | 2014-03-12 | 2014-06-25 | 国家电网公司 | Power supply standby device for transformer substation achieved based on PLC |
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2014
- 2014-03-12 CN CN201420110462.4U patent/CN203813507U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887873A (en) * | 2014-03-12 | 2014-06-25 | 国家电网公司 | Power supply standby device for transformer substation achieved based on PLC |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20210312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |