CN201266214Y - Automatic switching system for secondary voltage loop of electric energy metering loop in electric power substation - Google Patents
Automatic switching system for secondary voltage loop of electric energy metering loop in electric power substation Download PDFInfo
- Publication number
- CN201266214Y CN201266214Y CNU2008201848802U CN200820184880U CN201266214Y CN 201266214 Y CN201266214 Y CN 201266214Y CN U2008201848802 U CNU2008201848802 U CN U2008201848802U CN 200820184880 U CN200820184880 U CN 200820184880U CN 201266214 Y CN201266214 Y CN 201266214Y
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- CN
- China
- Prior art keywords
- electric energy
- section bus
- secondary voltage
- loop
- electric
- 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
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Abstract
An automatic switching system of an electric energy metering secondary voltage loop in an electric power station is characterized in that an electric energy meter screen is provided with a voltage switching relay; a direct current supply is used as a working direct current supply of the voltage switching relay; and a reinitiated contact of an I-section bus cutting knife and a reinitiated contact of an II-section bus cutting knife, which are correspondingly provided with protective relaying devices, are respectively arranged in power supply loops of voltage switching relays of an I-section bus and an II-section bus. The utility model enables the system to ensure the automatic switching of voltage and ensures the independence and the reliability of the electric energy metering secondary voltage loop.
Description
Technical field
The utility model relates to electric energy metrical loop secondary voltage circuit automatic switchover system in the electric substation, is applied in all kinds of electric substations of electric system in the electric energy metrical electric energy meter screen.
Background technology
The heavy movable contact of transfer relay is used widely, measurement loop secondary voltage circuit wiring confusion in the present electric substation, basically can not guarantee the correct switching of voltage circuit, cause the electric energy metrical mistake frequently to take place, cause many and user that electricity charge dispute constantly takes place in routine duties.
In the existing electric substation there be much electric energy metrical loop secondary voltage circuit switched system, measurement loop secondary voltage circuit wiring confusion, with other loop crossing operation, be difficult to guarantee the correct switching of voltage circuit, cause the electric energy metrical mistake frequently to take place, cause many and user that electricity charge dispute constantly takes place in routine duties.
The utility model content
The utility model is to be the weak point of avoiding above-mentioned prior art to deposit, and electric energy metrical loop secondary voltage circuit automatic switchover system in a kind of electric substation is provided.Guarantee that with this system voltage automaticallyes switch, guarantee the independence reliability of electric energy metrical secondary voltage circuit.
The technical scheme that the utility model technical solution problem is adopted is:
The design feature of electric energy metrical loop secondary voltage circuit automatic switchover system is on the electric energy meter screen selection relay to be set in the utility model electric substation; and get the working dc power of independent DC power supply as described selection relay, the heavy moving contact that correspondence is provided with the heavy moving contact of I section bus chopper of protective relaying device and II section bus chopper lays respectively in the power supply current supply circuit of selection relay of I section bus and II section bus.
The utility model realizes that the employed voltage of each road electric energy meter conforms to system operation mode, guarantees the accuracy of electric energy metrical.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model is that described selection relay is provided with independent DC power supply, thereby has guaranteed the reliable of selection relay working power.
2, the utility model utilizes the I of protective relaying device, the heavy movable contact of II section bus chopper that voltage is automaticallyed switch, and has guaranteed the independence reliability of electric energy metrical secondary voltage circuit.
Description of drawings
Fig. 1 constitutes block scheme for the utility model system.
Fig. 2 is secondary voltage circuit automatic switchover system circuit theory diagrams in electric energy metrical loop in the utility model electric substation.
Below by embodiment, the utility model is described in further detail in conjunction with the accompanying drawings:
Embodiment
System in concrete the enforcement constitutes as shown in Figure 1 and Figure 2; on the electric energy meter screen, selection relay is set; and get the working dc power of independent DC power supply as selection relay, the heavy moving contact that correspondence is provided with the heavy moving contact of I section bus chopper of protective relaying device and II section bus chopper lays respectively in the power supply current supply circuit of selection relay of I section bus and II section bus.
The utility model is to be used for electric energy metrical loop secondary voltage in the electric substation is automaticallyed switch, and concrete change action comprises:
Utilize the heavy moving contact of the I section bus chopper of protective relaying device that voltage is automaticallyed switch, guarantee independence, the reliability of electric energy metrical secondary voltage circuit.
Utilize the heavy moving contact of the II section bus chopper of protective relaying device that I, II section bus TV voltage are automaticallyed switch, guaranteed independence, the reliability of electric energy metrical secondary voltage circuit.
Utilize the I of protective relaying device, the heavy moving contact of II section bus chopper that I, II section bus TV voltage are automaticallyed switch, guaranteed independence, reliability, the accuracy of electric energy metrical secondary voltage circuit.
Utilize the I of protective relaying device, the heavy moving contact of II section bus chopper that I, II section bus TV voltage are automaticallyed switch, reduce voltage circuit secondary load, effective voltage loop secondary voltage drop.
Claims (1)
1, electric energy metrical loop secondary voltage circuit automatic switchover system in the electric substation; it is characterized in that on the electric energy meter screen, selection relay being set; and get the working dc power of independent DC power supply as described selection relay, the heavy moving contact that correspondence is provided with the heavy moving contact of I section bus chopper of protective relaying device and II section bus chopper lays respectively in the power supply current supply circuit of selection relay of I section bus and II section bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201848802U CN201266214Y (en) | 2008-08-29 | 2008-08-29 | Automatic switching system for secondary voltage loop of electric energy metering loop in electric power substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201848802U CN201266214Y (en) | 2008-08-29 | 2008-08-29 | Automatic switching system for secondary voltage loop of electric energy metering loop in electric power substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266214Y true CN201266214Y (en) | 2009-07-01 |
Family
ID=40832589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201848802U Expired - Fee Related CN201266214Y (en) | 2008-08-29 | 2008-08-29 | Automatic switching system for secondary voltage loop of electric energy metering loop in electric power substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266214Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501752A (en) * | 2016-09-23 | 2017-03-15 | 国网江西省电力公司电力科学研究院 | A kind of electrical energy meter electricity presses access way automatic identifying method |
-
2008
- 2008-08-29 CN CNU2008201848802U patent/CN201266214Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501752A (en) * | 2016-09-23 | 2017-03-15 | 国网江西省电力公司电力科学研究院 | A kind of electrical energy meter electricity presses access way automatic identifying method |
| CN106501752B (en) * | 2016-09-23 | 2019-04-26 | 国网江西省电力公司电力科学研究院 | A kind of electrical energy meter electricity pressure access way automatic identifying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20120829 |