CN103887873A - Power supply standby device for transformer substation achieved based on PLC - Google Patents

Power supply standby device for transformer substation achieved based on PLC Download PDF

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Publication number
CN103887873A
CN103887873A CN201410089409.5A CN201410089409A CN103887873A CN 103887873 A CN103887873 A CN 103887873A CN 201410089409 A CN201410089409 A CN 201410089409A CN 103887873 A CN103887873 A CN 103887873A
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CN
China
Prior art keywords
circuit
breaker
circuit breaker
divide
shut brake
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Pending
Application number
CN201410089409.5A
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Chinese (zh)
Inventor
王少龙
王强
漆柏林
王小举
安贵元
王佩霞
胡云芳
程华
周泉
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.)
TIANSHUI POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
State Grid Corp of China SGCC
State Grid Gansu Electric Power Co Ltd
Original Assignee
TIANSHUI POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
State Grid Corp of China SGCC
State Grid Gansu Electric Power 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 TIANSHUI POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co, State Grid Corp of China SGCC, State Grid Gansu Electric Power Co Ltd filed Critical TIANSHUI POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
Priority to CN201410089409.5A priority Critical patent/CN103887873A/en
Publication of CN103887873A publication Critical patent/CN103887873A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems 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
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

The invention discloses a power supply standby device for a transformer substation achieved based on a PLC. The power supply standby device for the transformer substation achieved based on the PLC comprises the PLC, a bus detection circuit, an incoming line power supply detection circuit, a breaker control circuit, a breaker position signal acquisition circuit, a breaker control intermediate relay circuit, a breaker on-off indicating circuit, a standby action reset circuit and a breaker circuit, wherein the bus detection circuit, the incoming line power supply detection circuit, the breaker control circuit, the breaker position signal acquisition circuit, the breaker control intermediate relay circuit, the breaker on-off indicating circuit and the standby action reset circuit are respectively connected with the PLC, and the breaker circuit is connected with the breaker control intermediate relay circuit. The power supply standby device for the transformer substation achieved based on the PLC can overcome the defects that the fault rate is high, reliability is low and safety is poor in the prior art, and can achieve the advantages of being low in fault rate, high in reliability and good in safety.

Description

A kind of transforming plant source spare power of realizing based on PLC
Technical field
The present invention relates to electrical equipment technical field, particularly, relate 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 transforming plants source, for throwing system fault after transformer station puts into operation the several years, is having a strong impact on the safe and stable operation of transformer station.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 invention, inventor finds at least to exist in prior art that failure rate is high, reliability is low and the defect such as poor stability.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose 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 used in the present invention 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 various embodiments of the present invention, 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 present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the winding diagram of existing transforming plant source power supply system;
Fig. 2 be the present invention is based on PLC realize transforming plant source spare power in voltage relay realize decompression testing circuit winding diagram;
Fig. 3 be the present invention is based on PLC realize transforming plant source spare power in lead-in circuit breaker QF1(or QF2) separating brake action logic figure;
Fig. 4 be the present invention is based on PLC realize transforming plant source spare power in lead-in circuit breaker QF1(or QF2) feed motion logic diagram;
Fig. 5 be the present invention is based on PLC realize transforming plant source spare power in section breaker QF3 feed motion logic diagram;
Fig. 6 is the hardware block diagram that the present invention is based on the transforming plant source spare power of PLC realization.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
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 embodiment of the present invention, 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, realizing 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 various embodiments described above of the present invention, at least can reach following beneficial effect:
(1) have intellectuality, installation and maintenance are simplified and the advantage such as reliable, flexible;
(2) can automatic decision transforming plant system wiring mode, 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 the preferred embodiments of the present invention, be not limited to the present invention, although the present invention 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.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

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.
CN201410089409.5A 2014-03-12 2014-03-12 Power supply standby device for transformer substation achieved based on PLC Pending CN103887873A (en)

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Publication number Priority date Publication date Assignee Title
CN106026370A (en) * 2016-07-27 2016-10-12 国网山东省电力公司东营供电公司 PLC-based 110kV transformer substation DC power supply system backup device
CN107302218A (en) * 2017-08-08 2017-10-27 内蒙古鄂尔多斯联合化工有限公司 It is a kind of to control switchgear house with PLC
CN110445251A (en) * 2019-09-03 2019-11-12 威立雅(哈尔滨)热电有限公司 Low-voltage Backup Power based on programmable controller automatically engages system

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Publication number Priority date Publication date Assignee Title
CN106026370A (en) * 2016-07-27 2016-10-12 国网山东省电力公司东营供电公司 PLC-based 110kV transformer substation DC power supply system backup device
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CN107302218A (en) * 2017-08-08 2017-10-27 内蒙古鄂尔多斯联合化工有限公司 It is a kind of to control switchgear house with PLC
CN110445251A (en) * 2019-09-03 2019-11-12 威立雅(哈尔滨)热电有限公司 Low-voltage Backup Power based on programmable controller automatically engages system

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