CN104993465A - Intelligent transformer station double circuit line direction distance protection method - Google Patents
Intelligent transformer station double circuit line direction distance protection method Download PDFInfo
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- CN104993465A CN104993465A CN201510482056.XA CN201510482056A CN104993465A CN 104993465 A CN104993465 A CN 104993465A CN 201510482056 A CN201510482056 A CN 201510482056A CN 104993465 A CN104993465 A CN 104993465A
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Abstract
The invention discloses an intelligent transformer substation double circuit line direction distance protection method, comprising steps of (1) receiving positive direction information of the direction distance transmitted by an adjacent wire protection device by a GOOSE communication network, (2)calculating the positive direction information of the distance protection of the wire according to the wire electric quantity, (3) if the positive direction of the wire direction distance is in operation and the positive direction of the received adjacent wire direction distance is not in operation, determining the direction distance of the wire is the positive direction. When the direction distance protection is being determined, by combining with determination result of the adjacent wire direction distance protection, the misjudgment on the adjacent wire fault wire direction distance protection is prevented, which improves the reliability of determining direction.
Description
Technical field
The present invention relates to a kind of electric network protection technology, particularly a kind of intelligent substation double loop directional distance protection method.
Background technology
Current directional distance protection is widely used in power system transmission line; as distance I segment protect, distance II segment protect and longitudinal distance protection etc.; but; when being applied to double loop, based on the directional distance protection of monospace electric parameters, when wherein a loop line breaks down double loop; the situation of incorrect differentiation may be there is in another loop line range direction; during as broken down near adjacent lines outlet, this linear distance direction may be judged by accident, affects the power supply reliability of double-circuit line.
Along with the extensive use of intelligent station technology, the relevant information being obtained adjacent spaces protection by GOOSE network is day by day convenient, makes comprehensively to use the enforcement of the discriminating direction result of two loop line road directional distance protections to become possibility.
Summary of the invention
Object of the present invention, is to provide a kind of intelligent substation double loop directional distance protection method, and when double loop breaks down, directional distance protection energy correct decision direction, improves power supply reliability.
In order to reach above-mentioned purpose, solution of the present invention is: intelligent substation double loop directional distance protection method, is characterized in that comprising following steps:
(1) the positive direction information of the direction distance that adjacent line protective device sends is received by GOOSE communication network;
(2) this line protective device calculates the positive direction information of this line directional distance protection according to this line electric quantity information;
(3) the positive direction action of this line direction distance and the positive direction of adjacent line direction distance received are failure to actuate, then sentencing this line direction distance is positive direction.
In scheme described above, this line electric quantity information refers to current information, information of voltage.
After adopting said method, the invention has the beneficial effects as follows: when directional distance protection travel direction differentiates, in conjunction with the differentiation result of adjacent line directional distance protection, prevent adjacent line fault this line directional distance protection direction from judging by accident, improve the reliability of discriminating direction.
Accompanying drawing explanation
Fig. 1 is input and output schematic diagram of the present invention.
Fig. 2 is differentiation logic diagram of the present invention.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
Object of the present invention, is to provide a kind of intelligent substation double loop directional distance protection method, and when double loop breaks down, directional distance protection energy correct decision direction, improves power supply reliability.。
This line directional distance protection utilizes the positive direction result of this line current and information of voltage calculated direction distance; and in combination with the positive direction result of adjacent line directional distance protection that GOOSE network receives; the positive direction action of this line direction distance and the positive direction of adjacent line direction distance are failure to actuate, then this line of comprehensive distinguishing direction distance is positive direction.
Composition graphs 1 and Fig. 2 are specifically described.The input of this line electric parameters calculates through this line directional distance protection; obtain the directional information of this line direction distance; and the directional information of adjacent line directional distance protection is received by GOOSE network; if the positive direction action of this line direction distance and the positive direction of the adjacent line directional distance protection received are failure to actuate, then think that the direction of this line direction distance is positive direction.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (2)
1. an intelligent substation double loop directional distance protection method, is characterized in that comprising following steps:
(1) the positive direction information of the direction distance that adjacent line protective device sends is received by GOOSE communication network;
(2) this line protective device calculates the positive direction information of this line directional distance protection according to this line electric quantity information;
(3) the positive direction action of this line direction distance and the positive direction of adjacent line direction distance received are failure to actuate, then sentencing this line direction distance is positive direction.
2. intelligent substation double loop directional distance protection method according to claim 1, is characterized in that: described electric quantity information refers to current information and information of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482056.XA CN104993465A (en) | 2015-08-07 | 2015-08-07 | Intelligent transformer station double circuit line direction distance protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482056.XA CN104993465A (en) | 2015-08-07 | 2015-08-07 | Intelligent transformer station double circuit line direction distance protection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104993465A true CN104993465A (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482056.XA Pending CN104993465A (en) | 2015-08-07 | 2015-08-07 | Intelligent transformer station double circuit line direction distance protection method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1313194A2 (en) * | 2001-11-20 | 2003-05-21 | Alstom | Protection of double circuit power lines |
| CN102508116A (en) * | 2011-10-26 | 2012-06-20 | 国电南京自动化股份有限公司 | Phase selection method of double-circuit transmission lines on the same pole of intelligent substation based on current balance principle |
| CN102403701B (en) * | 2011-11-23 | 2013-12-25 | 河海大学 | Self-adaptive distance protection method for double-circuit line of intelligent substation |
| CN104253421A (en) * | 2014-09-28 | 2014-12-31 | 中国南方电网有限责任公司 | Relay protection optimal configuration method for double-circuit lines on same pole based on substation area information sharing |
| CN104767183A (en) * | 2015-03-04 | 2015-07-08 | 国家电网公司 | Method for recognizing different-phase cross-line ground fault of double-circuit lines based on actual measurement of voltage of different-phase cross-line grounding point |
-
2015
- 2015-08-07 CN CN201510482056.XA patent/CN104993465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1313194A2 (en) * | 2001-11-20 | 2003-05-21 | Alstom | Protection of double circuit power lines |
| CN102508116A (en) * | 2011-10-26 | 2012-06-20 | 国电南京自动化股份有限公司 | Phase selection method of double-circuit transmission lines on the same pole of intelligent substation based on current balance principle |
| CN102403701B (en) * | 2011-11-23 | 2013-12-25 | 河海大学 | Self-adaptive distance protection method for double-circuit line of intelligent substation |
| CN104253421A (en) * | 2014-09-28 | 2014-12-31 | 中国南方电网有限责任公司 | Relay protection optimal configuration method for double-circuit lines on same pole based on substation area information sharing |
| CN104767183A (en) * | 2015-03-04 | 2015-07-08 | 国家电网公司 | Method for recognizing different-phase cross-line ground fault of double-circuit lines based on actual measurement of voltage of different-phase cross-line grounding point |
Non-Patent Citations (1)
| Title |
|---|
| 刘琨，董新洲，李幼仪: "双回线无通道集成保护的实现方案", 《南方电网技术》 * |
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Application publication date: 20151021 |
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