CN204028213U - A kind of 220kV power circuit gate energy meter decompression alarm loop - Google Patents
A kind of 220kV power circuit gate energy meter decompression alarm loop Download PDFInfo
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- CN204028213U CN204028213U CN201420247289.2U CN201420247289U CN204028213U CN 204028213 U CN204028213 U CN 204028213U CN 201420247289 U CN201420247289 U CN 201420247289U CN 204028213 U CN204028213 U CN 204028213U
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- energy meter
- gate energy
- voltage
- power circuit
- alarm loop
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- 230000006837 decompression Effects 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model discloses a kind of 220kV power circuit gate energy meter decompression alarm loop, comprise a gate energy meter, the secondary voltage circuit of described gate energy meter adds under-voltage replay, described under-voltage replay is connected on the secondary voltage between phases of gate energy meter respectively, and also introducing in described gate energy meter has transmission line of electricity isolating switch and the time relay; This 220kV power circuit gate energy meter decompression alarm loop can when gate energy meter decompression the very first time send alarm signal, prompting operations staff process in time, avoids the loss of electricity volume, reach Timeliness coverage, the timely elimination system failure, ensures the safe and stable operation of electric energy meter.
Description
Technical field
The utility model relates to a kind of 220kV power circuit gate energy meter decompression alarm loop.
Background technology
The gate energy meter of thermal power plant is most important electric quantity metering device, is the important evidence of the external electricity disbursement and sattlement of thermal power plant.The voltage secondary circuit (auxiliary contact of transmission line of electricity isolation switch switch secondary voltage circuit) of gate energy meter lacks effective monitoring means usually, electric energy meter just will be caused to leak meter electricity volume once gate energy meter voltage secondary circuit decompression, and electricity volume work of remedying also have certain difficulty.For avoiding causing economic loss because losing electricity after gate energy meter decompression, guarantee the safe and stable operation of gate energy meter simultaneously, so alarm loop after design gate energy meter decompression, mainly install low-voltage monitoring circuit additional at gate energy meter voltage secondary circuit (after metering secondary voltage blocked operation case), to monitor the integrity of Source of Gateway Meter secondary voltage, alarm signal can be sent in time when Source of Gateway Meter decompression or PT secondary circuit broken string, prompting operations staff process in time, avoids the loss of electricity volume.
Utility model content
The technical problems to be solved in the utility model be to provide one can when gate energy meter decompression the very first time send alarm signal, prompting operations staff process in time, avoid the loss of electricity volume, reach Timeliness coverage, the timely elimination system failure, ensures the 220kV power circuit gate energy meter decompression alarm loop of the safe and stable operation of electric energy meter.
For solving the problem, the utility model adopts following technical scheme:
A kind of 220kV power circuit gate energy meter decompression alarm loop, comprise a gate energy meter, the secondary voltage circuit of described gate energy meter adds under-voltage replay, described under-voltage replay is connected on the secondary voltage between phases of gate energy meter respectively, and also introducing in described gate energy meter has transmission line of electricity isolating switch and the time relay.
As preferably, described under-voltage replay is accurate passive under-voltage replay.
As preferably, the described time relay is connected to DCS system.
The beneficial effects of the utility model are: owing to being provided with under-voltage replay, exported as Source of Gateway Meter decompression criterion by the normally closed contact logic disjunction gate of under-voltage replay, also introduce simultaneously and have transmission line of electricity isolating switch, to put into operation criterion as Source of Gateway Meter with the auxiliary normal opened contact of transmission line of electricity isolating switch, finally export with logic " with door ", driving time relay, the time relay is mainly used in escaping the impact of electric system impact on under-voltage replay, prevent its misoperation, and finally with time relay normal opened contact as photon board signal or be converted into on-off state and deliver to DCS system, to notify that operations staff deals with on the merits of each case in time.
Accompanying drawing explanation
Fig. 1 is the logic diagram in a kind of 220kV power circuit of the utility model gate energy meter decompression alarm loop.
Embodiment
Consult shown in Fig. 1, a kind of 220kV power circuit gate energy meter decompression alarm loop, comprise a gate energy meter, the secondary voltage circuit of described gate energy meter adds under-voltage replay, exported as Source of Gateway Meter decompression criterion by the normally closed contact logic disjunction gate of under-voltage replay, described under-voltage replay is connected on the secondary voltage between phases of gate energy meter respectively, also introduce in described gate energy meter and have transmission line of electricity isolating switch and the time relay, driving time relay is exported as logic " with door ", and with time relay normal opened contact as photon board signal or be converted into on-off state and deliver to DCS system.
Described under-voltage replay is accurate passive under-voltage replay, stronger with this device suitability.
The described time relay is connected to DCS system, is convenient to signal transmission.
The beneficial effects of the utility model are: owing to being provided with under-voltage replay, exported as Source of Gateway Meter decompression criterion by the normally closed contact logic disjunction gate of under-voltage replay, also introduce simultaneously and have transmission line of electricity isolating switch, to put into operation criterion as Source of Gateway Meter with the auxiliary normal opened contact of transmission line of electricity isolating switch, finally export with logic " with door ", driving time relay, the time relay is mainly used in escaping the impact of electric system impact on under-voltage replay, prevent its misoperation, and finally with time relay normal opened contact as photon board signal or be converted into on-off state and deliver to DCS system, to notify that operations staff deals with on the merits of each case in time.
The above, be only embodiment of the present utility model, but protection domain of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed in the new protection domain of this practicality and be as the criterion.
Claims (3)
1. a 220kV power circuit gate energy meter decompression alarm loop, it is characterized in that: comprise a gate energy meter, the secondary voltage circuit of described gate energy meter adds under-voltage replay, described under-voltage replay is connected on the secondary voltage between phases of gate energy meter respectively, and also introducing in described gate energy meter has transmission line of electricity isolating switch and the time relay.
2. 220kV power circuit gate energy meter decompression alarm loop according to claim 1, is characterized in that: described under-voltage replay is accurate passive under-voltage replay.
3. 220kV power circuit gate energy meter decompression alarm loop according to claim 1, is characterized in that: the described time relay is connected to DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247289.2U CN204028213U (en) | 2014-05-15 | 2014-05-15 | A kind of 220kV power circuit gate energy meter decompression alarm loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247289.2U CN204028213U (en) | 2014-05-15 | 2014-05-15 | A kind of 220kV power circuit gate energy meter decompression alarm loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028213U true CN204028213U (en) | 2014-12-17 |
Family
ID=52068055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247289.2U Expired - Lifetime CN204028213U (en) | 2014-05-15 | 2014-05-15 | A kind of 220kV power circuit gate energy meter decompression alarm loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
-
2014
- 2014-05-15 CN CN201420247289.2U patent/CN204028213U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |
|
| CX01 | Expiry of patent term |