CN102013663A - Protector for complex voltage operating circuit at high and low pressure sides - Google Patents
Protector for complex voltage operating circuit at high and low pressure sides Download PDFInfo
- Publication number
- CN102013663A CN102013663A CN 201010571139 CN201010571139A CN102013663A CN 102013663 A CN102013663 A CN 102013663A CN 201010571139 CN201010571139 CN 201010571139 CN 201010571139 A CN201010571139 A CN 201010571139A CN 102013663 A CN102013663 A CN 102013663A
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- low pressure
- pressure sides
- protection
- complex voltage
- operating circuit
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Abstract
The invention discloses a protector for complex voltage operating circuit at high and low pressure sides, comprising a relay, wherein the relay is arranged in the complex voltage operating circuit at the high and low pressure sides. In the invention, the protection on a transformer is subject to technical transformation and the relay is changed, so that the reliable operation of complex voltage locking overcurrent protection at the high and low pressure sides is ensured; logical condition is subject to 5-10 seconds time relay broadening when the protector of the complex voltage operating circuit at the high and low pressure sides starts, thereby ensuring the reliable operation of the high back-up protection; and sensitivity of the high back-up protection of the main transformer protection is verified again when the high and low pressure sides short out.
Description
Technical field
The invention belongs to the protective relaying device technical field, be specifically related to a kind of in, low-pressure side composite voltage action circuit protective device.
Background technology
Relaying protection is the important component part of electric power system, is called as the safety curtain of electrical network, is again simultaneously the root that possible cause accident to enlarge, and its performance quality directly influences the safe operation of electrical network.When the protective relaying device cisco unity malfunction, when perhaps mistake occurring, will directly cause, device damage, the state of affairs enlarge even electric network from collapsing, cause for national economy and people's lives and have a strong impact on.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art, and provide a kind of effective raising protective relaying device reliability, guarantee power network safety operation, make power supply realize many for few decrease in, low-pressure side composite voltage action circuit protective device.
In a kind of, low-pressure side composite voltage action circuit protective device; comprise relay, transformer; described relay is arranged in the mesolow side composite voltage action circuit, described in, the logical condition when low-pressure side composite voltage action circuit protective device starts increases by the time-delay broadening of 5～10S.
Because the present invention is undergoing technological transformation to tranformer protection, change relay, make medium voltage side composite voltage locking overcurrent protection action message, centering, the logical condition when low-pressure side composite voltage action circuit protective device starts increase the time-delay broadening of 5-10S, to guarantee high backup protection action message; And again this type of main transformer protection of verification in, during the low-pressure side short circuit, the sensitivity of high backup protection.
Utilize the present invention, during mesolow side fault, can correctly provide the condition of work that presses again; improve the reliability of protective relaying device, guarantee power network safety operation, realized the power supply policy that many confessions are decreased less; fundamentally stop the generation once more of this type of accident, receive good social benefit.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is a circuit diagram of the present invention,
Embodiment
As shown in Figure 1: in a kind of, low-pressure side composite voltage action circuit protective device; comprise relay, transformer; described relay is arranged in the mesolow side composite voltage action circuit, described in, the logical condition when low-pressure side composite voltage action circuit protective device starts increases the time-delay broadening of 5-10S.
Because the present invention is undergoing technological transformation to tranformer protection, change relay, make medium voltage side composite voltage locking overcurrent protection action message, centering, the logical condition when low-pressure side composite voltage action circuit protective device starts increase time-delay broadening such as Fig. 1 of 5-10S, to guarantee high backup protection action message; And again this type of main transformer protection of verification in, during the low-pressure side short circuit, the sensitivity of high backup protection.
Utilize the present invention, during mesolow side fault, can correctly provide the condition of work that presses again; improve the reliability of protective relaying device, guarantee power network safety operation, realized the power supply policy that many confessions are decreased less; fundamentally stop the generation of this type of accident, receive good social benefit.
Claims (1)
1. in one kind, low-pressure side composite voltage action circuit protective device; comprise relay, transformer; it is characterized in that: described relay is arranged in the mesolow side composite voltage action circuit, described in, the logical condition when low-pressure side composite voltage action circuit protective device starts increases by the time-delay broadening of 5～10S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571139 CN102013663A (en) | 2010-11-26 | 2010-11-26 | Protector for complex voltage operating circuit at high and low pressure sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571139 CN102013663A (en) | 2010-11-26 | 2010-11-26 | Protector for complex voltage operating circuit at high and low pressure sides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013663A true CN102013663A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010571139 Pending CN102013663A (en) | 2010-11-26 | 2010-11-26 | Protector for complex voltage operating circuit at high and low pressure sides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102013663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319743A (en) * | 2014-05-30 | 2015-01-28 | 许继电气股份有限公司 | Method and device for quick backup protection of high-voltage side of main transformer based on station region information |
-
2010
- 2010-11-26 CN CN 201010571139 patent/CN102013663A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319743A (en) * | 2014-05-30 | 2015-01-28 | 许继电气股份有限公司 | Method and device for quick backup protection of high-voltage side of main transformer based on station region information |
| CN104319743B (en) * | 2014-05-30 | 2017-06-16 | 许继电气股份有限公司 | The method and apparatus of the main transformer high-pressure side Fast Operating Backup Protection based on station domain information |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |