CN104052035B - Same-tower double-circuit line single-phase grounded reactance relay - Google Patents
Same-tower double-circuit line single-phase grounded reactance relay Download PDFInfo
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- CN104052035B CN104052035B CN201410325798.7A CN201410325798A CN104052035B CN 104052035 B CN104052035 B CN 104052035B CN 201410325798 A CN201410325798 A CN 201410325798A CN 104052035 B CN104052035 B CN 104052035B
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- 230000007704 transition Effects 0.000 abstract description 10
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Abstract
The invention discloses a same-tower double-circuit line single-phase grounded reactance relay. According to the method, the fault phase electric quantity of the protection mounting position of a circuit line of a same-tower double-circuit line I is firstly measured, the zero sequence current of a circuit line of a same-tower double-circuit line II is calculated, then, the influence of the zero sequence current of the circuit line of the same-tower double-circuit line II is calculated, the motion voltage within the protection setting range of the circuit line of the same-tower double-circuit line I is calculated, whether the phase angle of the motion voltage, ahead of the fault phase negative sequence current, within the protection setting range of the circuit line of the same-tower double-circuit line I is from 180 degrees to 360 degrees or not is judged, and if the phase angle is from 180 degrees to 360 degrees, a reactance relay sends out a motion trip signal, and trips off breakers at the two ends of the circuit line of the same-tower double-circuit line I. According to the method, the influence of the zero mutual inductance between the lines on the protection motion performance of the same-tower double-circuit line single-phase grounded relay is removed, and the influence of the transition resistance and the load currents on the protection motion performance is avoided.
Description
Technical field
The present invention relates to Relay Protection Technology in Power System field, concretely relate to a kind of single-ended based on single back line
The double-circuit lines on the same pole road single-phase earthing reactance relay of electric parameters.
Background technology
There is zero-sequence mutual inductance, zero-sequence mutual inductance produces impact to zero-utility theory between double-circuit lines on the same pole route, and then
Produce additional impedance, because the additional impedance that zero-sequence mutual inductance causes can lead to the fault impedance that protector measuring arrives be more than actual therefore
Barrier resists, when causing at protection seting scope, singlephase earth fault to occur in the protection zone of double-circuit lines on the same pole road, protection
Misoperation occurs, unfavorable to power network safety operation.
Even if double-circuit lines on the same pole road occurs to be directly grounded fault through shaft tower, in soil resistivity lower ground area's transition
Resistance is also near 10 Ω；In the higher local transition resistance of resistivity up to 30 Ω, or even more high.Transition resistance is not zero
Make the calculated fault impedance of protection device in addition to comprising to react the fault impedance component of true fault distance, further comprises
The additional impedance producing because of transition resistance.The additional impedance that transition resistance produces is in that resistance sense or easily cause in capacitance-resistance connects
Ground impedance distance protection tripping or steady-state.False protection or tripping, can bring great damage to safe operation of power system
Lose, it could even be possible to the stability of power system can be threatened.
Singlephase earth fault accounts for more than the 80% of double-circuit lines on the same pole road fault type, the guarantor of single-phase high-impedance
Shield problem is never preferably solved, and studies what a kind of performance was not affected by zero-sequence mutual inductance between line and transition resistance
Double-circuit lines on the same pole road singlephase earth fault relay protecting method has highly important engineering application value.
Content of the invention
It is an object of the invention to overcome the shortcomings of prior art exist, provide a kind of performance be not subject to transition resistance,
The double-circuit lines on the same pole road single-phase earthing based on single back line single-end electrical quantity of zero-sequence mutual inductance impact between load current and line
Reactance relay.
The present invention solves being employed technical scheme comprise that of its technical problem：
1. double-circuit lines on the same pole road single-phase earthing reactance relay it is characterised in that：Including following sequential steps：
(1) this reactance relay measures the faulted phase voltage that double-circuit lines on the same pole road I goes back to route protection installation place
Faulted phase currentFault phase negative-sequence currentAnd zero-sequence currentWherein, φ be I loop line road A phase or I loop line road B phase,
Or I loop line road C phase；
(2) this reactance relay calculates the zero-sequence current on double-circuit lines on the same pole road II loop line road
Wherein, Zm0Zero sequence system equivalent impedance for this side protection installation place of double-circuit lines on the same pole road I loop line road；Zn0
Protect the zero sequence system equivalent impedance of installation place for double-circuit lines on the same pole road I loop line road offside；ZmFor double-circuit lines on the same pole
Zero-sequence mutual inductance between road I loop line road and double-circuit lines on the same pole road II loop line road；L is double-circuit lines on the same pole road I loop line road
Length；ZI0Zero sequence impedance for double-circuit lines on the same pole road I loop line road；lsetReturn route protection for double-circuit lines on the same pole road I whole
Determine scope；
(3) this reactance relay calculates double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at place
Wherein, ZI0Zero sequence impedance for double-circuit lines on the same pole road I loop line road；ZI1For double-circuit lines on the same pole road I loop line
The positive sequence impedance on road；φ is I loop line road A phase or I loop line road B phase or I loop line road C phase；For faulted phase voltage；For event
Barrier phase current；For zero-sequence current；ZmFor double-circuit lines on the same pole road I loop line road and double-circuit lines on the same pole road II loop line road it
Between zero-sequence mutual inductance；L returns line length for double-circuit lines on the same pole road I；
(4) this reactance relay judges double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at placeLeading fault phase negative-sequence currentPhase corner whether set up in the range of [180 °, 360 °], if so, then protect
Device sends action trip signal, tripping double-circuit lines on the same pole road I loop line road two ends breaker.
Compared with background technology, it has the advantage that the technical program：
The inventive method calculates same bar using the fault phase electric parameters that double-circuit lines on the same pole road I goes back to route protection installation place
And the zero-sequence current on frame double-circuit line II loop line road, the impact of meter and double-circuit lines on the same pole road II loop line road zero-sequence current, meter
Calculate the operation voltage at the protection seting scope of double-circuit lines on the same pole road I loop line road, judge double-circuit lines on the same pole road I loop line road
Whether the phase corner of the leading fault phase negative-sequence current of the operation voltage at protection seting scope becomes in the range of [180 °, 360 °]
It is vertical, if so, then reactance relay sends action trip signal, tripping double-circuit lines on the same pole road I loop line road two ends breaker.
Consider the impact of zero-sequence mutual inductance between line in the inventive method algorithm model, eliminate between line zero-sequence mutual inductance to parallel lines on same tower double back
The impact of line single phase grounding failure relay protection performance.The inventive method is according to double-circuit lines on the same pole road I loop line road
Angle relationship between operation voltage at protection seting scope and fault phase negative-sequence current constitutes Protection criteria, overcomes transition
The impact to Perfomance of protective relaying of resistance and load current.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the double-circuit lines on the same pole road transmission system schematic diagram of the application present invention.
Specific embodiment
Fig. 1 is the double-circuit lines on the same pole road transmission system schematic diagram of the application present invention.In Fig. 1, PT is voltage transformer；
CT is current transformer.Reactance relay measures the faulted phase voltage that double-circuit lines on the same pole road I goes back to route protection installation placeFaulted phase currentFault phase negative-sequence currentAnd zero-sequence currentWherein, φ is I loop line road A phase or I loop line
Road B phase or I loop line road C phase.
Reactance relay calculates the zero-sequence current on double-circuit lines on the same pole road II loop line road
Wherein, Zm0Zero sequence system equivalent impedance for this side protection installation place of double-circuit lines on the same pole road I loop line road；Zn0
Protect the zero sequence system equivalent impedance of installation place for double-circuit lines on the same pole road I loop line road offside；ZmFor double-circuit lines on the same pole
Zero-sequence mutual inductance between road I loop line road and double-circuit lines on the same pole road II loop line road；L is double-circuit lines on the same pole road I loop line road
Length；ZI0Zero sequence impedance for double-circuit lines on the same pole road I loop line road；lsetReturn route protection for double-circuit lines on the same pole road I whole
Determine scope.
Reactance relay calculates double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at place
Wherein, ZI0Zero sequence impedance for double-circuit lines on the same pole road I loop line road；ZI1For double-circuit lines on the same pole road I loop line
The positive sequence impedance on road；φ is I loop line road A phase or I loop line road B phase or I loop line road C phase；For faulted phase voltage；For
Faulted phase current；For fault phase negative-sequence current；For zero-sequence current.
Reactance relay calculates double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at placeLeading fault phase negative-sequence currentPhase angleJudgeFall at (180 °, 360 °)
In the range of whether set up, if so, then reactance relay sends action trip signal, tripping double-circuit lines on the same pole road I loop line
Road two ends breaker.
The inventive method calculates same bar using the fault phase electric parameters that double-circuit lines on the same pole road I goes back to route protection installation place
And the zero-sequence current on frame double-circuit line II loop line road, the impact of meter and double-circuit lines on the same pole road II loop line road zero-sequence current, meter
Calculate the operation voltage at the protection seting scope of double-circuit lines on the same pole road I loop line road, judge double-circuit lines on the same pole road I loop line road
Whether the phase corner of the leading fault phase negative-sequence current of the operation voltage at protection seting scope becomes in the range of [180 °, 360 °]
It is vertical, if so, then reactance relay sends action trip signal, tripping double-circuit lines on the same pole road I loop line road two ends breaker.
Consider the impact of zero-sequence mutual inductance between line in the inventive method algorithm model, eliminate between line zero-sequence mutual inductance to parallel lines on same tower double back
The impact of line single phase grounding failure relay protection performance.The inventive method is according to double-circuit lines on the same pole road I loop line road
Angle relationship between operation voltage at protection seting scope and fault phase negative-sequence current constitutes Protection criteria, overcomes transition
The impact to Perfomance of protective relaying of resistance and load current.
The above, only present pre-ferred embodiments, therefore can not limit according to this present invention enforcement scope, that is, according to
Equivalence changes and modification that the scope of the claims of the present invention and description are made, all should still belong in the range of the present invention covers.
Claims (1)
1. double-circuit lines on the same pole road single-phase earthing reactance relay it is characterised in that：Including following sequential steps：
(1) this reactance relay measures the faulted phase voltage that double-circuit lines on the same pole road I goes back to route protection installation placeFault
Phase currentFault phase negative-sequence currentAnd zero-sequence currentWherein, φ is I loop line road A phase or I loop line road B phase or I
Loop line road C phase；
(2) this reactance relay calculates the zero-sequence current on double-circuit lines on the same pole road II loop line road
Wherein, Zm0Zero sequence system equivalent impedance for this side protection installation place of double-circuit lines on the same pole road I loop line road；Zn0It is same bar
And frame double-circuit line I loop line road offside protects the zero sequence system equivalent impedance of installation place；ZmFor double-circuit lines on the same pole road I loop line
Zero-sequence mutual inductance between road and double-circuit lines on the same pole road II loop line road；L returns line length for double-circuit lines on the same pole road I；ZI0
Zero sequence impedance for double-circuit lines on the same pole road I loop line road；lsetFor double-circuit lines on the same pole road I loop line road protection seting scope；
(3) this reactance relay calculates double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at place
Wherein, ZI0Zero sequence impedance for double-circuit lines on the same pole road I loop line road；ZI1For double-circuit lines on the same pole road I loop line road
Positive sequence impedance；φ is I loop line road A phase or I loop line road B phase or I loop line road C phase；For faulted phase voltage；For fault phase
Electric current；For zero-sequence current；ZmFor between double-circuit lines on the same pole road I loop line road and double-circuit lines on the same pole road II loop line road
Zero-sequence mutual inductance；L returns line length for double-circuit lines on the same pole road I；
(4) this reactance relay judges double-circuit lines on the same pole road I loop line road protection seting scope lsetThe operation voltage at placeLeading fault phase negative-sequence currentPhase corner whether set up in the range of [180 °, 360 °], if so, then reactance
Relay sends action trip signal, tripping double-circuit lines on the same pole road I loop line road two ends breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410325798.7A CN104052035B (en) | 2014-07-09 | 2014-07-09 | Same-tower double-circuit line single-phase grounded reactance relay |
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| CN201410325798.7A CN104052035B (en) | 2014-07-09 | 2014-07-09 | Same-tower double-circuit line single-phase grounded reactance relay |
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| CN104052035A CN104052035A (en) | 2014-09-17 |
| CN104052035B true CN104052035B (en) | 2017-02-15 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950220B (en) * | 2015-06-17 | 2018-06-19 | 国家电网公司 | Double-circuit lines on the same pole road singlephase earth fault method of single end distance measurement is realized using single back line single-end electrical quantity |
| CN108155631B (en) * | 2017-12-26 | 2020-06-12 | 苏州科爱佳自动化科技有限公司 | Circuit ground fault removing system |
| CN108075452B (en) * | 2017-12-26 | 2020-06-09 | 苏州科爱佳自动化科技有限公司 | Self-protection system for power transmission line |
| CN111817273B (en) * | 2020-07-08 | 2022-06-03 | 国网福建省电力有限公司检修分公司 | Extra-high voltage same-tower double-circuit line ground fault relay protection method based on six-sequence component method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161011A (en) * | 1978-02-21 | 1979-07-10 | General Electric Company | Ground distance relay employing phase comparator measurement |
| CN101478147A (en) * | 2009-01-15 | 2009-07-08 | 烟台东方电子信息产业股份有限公司 | Zero sequence synthetic impedance longitudinal linkage protection determination process |
| CN101593964A (en) * | 2009-06-30 | 2009-12-02 | 许继电气股份有限公司 | The method for longitudinal zero-sequence power direction protection of double-circuit lines on the same pole |
| CN103762560A (en) * | 2014-02-18 | 2014-04-30 | 国家电网公司 | Double-circuit line non-same-name-phase overline grounded reactance distance protection method |
| CN103779847A (en) * | 2014-02-18 | 2014-05-07 | 国家电网公司 | Same-pole double-circuit line one-phase ground voltage ratio phase protection method based on SV network sampling |
-
2014
- 2014-07-09 CN CN201410325798.7A patent/CN104052035B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161011A (en) * | 1978-02-21 | 1979-07-10 | General Electric Company | Ground distance relay employing phase comparator measurement |
| CN101478147A (en) * | 2009-01-15 | 2009-07-08 | 烟台东方电子信息产业股份有限公司 | Zero sequence synthetic impedance longitudinal linkage protection determination process |
| CN101593964A (en) * | 2009-06-30 | 2009-12-02 | 许继电气股份有限公司 | The method for longitudinal zero-sequence power direction protection of double-circuit lines on the same pole |
| CN103762560A (en) * | 2014-02-18 | 2014-04-30 | 国家电网公司 | Double-circuit line non-same-name-phase overline grounded reactance distance protection method |
| CN103779847A (en) * | 2014-02-18 | 2014-05-07 | 国家电网公司 | Same-pole double-circuit line one-phase ground voltage ratio phase protection method based on SV network sampling |
Non-Patent Citations (2)
| Title |
|---|
| 同塔线路接地距离保护测量阻抗特性分析;曾耿晖等;《广东电力》;20101225;第22卷(第10期);24-28,79 * |
| 同杆双回线跨线接地故障的距离保护算法研究;李伟等;《中国电机工程学报》;20130305;第33卷(第7期);131-139 * |
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Owner name: STATE GRID FUJIAN ELECTRIC POWER CO., LTD. MAINTEN Free format text: FORMER OWNER: STATE GRID FUJIAN ELECTRIC POWER CO., LTD. MAINTENANCE BRANCH COMPANY OF STATE GRID FUJIAN ELECTRIC POWER COMPANY Effective date: 20140919 |
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Inventor after: Zeng Huimin Inventor after: Lin Fuhong Inventor before: Zeng Huimin |
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Free format text: CORRECT: INVENTOR; FROM: CENG HUIMIN TO: CENG HUIMIN LIN FUHONG |
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Effective date of registration: 20140919 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Applicant after: STATE GRID FUJIAN MAINTENANCE Co. Applicant after: STATE GRID PUTIAN ELECTRIC POWER SUPPLY Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Applicant before: STATE GRID FUJIAN MAINTENANCE Co. |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Co-patentee after: STATE GRID FUJIAN MAINTENANCE Co. Co-patentee after: STATE GRID PUTIAN ELECTRIC POWER SUPPLY Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Patentee before: State Grid Corporation of China Co-patentee before: STATE GRID FUJIAN MAINTENANCE Co. Co-patentee before: STATE GRID PUTIAN ELECTRIC POWER SUPPLY Co. |
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Address after: 351100 Putian province Fujian city Chengxiang District Nanyuan Xia Lin Street Road No. 999 Co-patentee after: STATE GRID CORPORATION OF CHINA Patentee after: STATE GRID PUTIAN ELECTRIC POWER SUPPLY Co. Co-patentee after: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Co-patentee after: STATE GRID FUJIAN MAINTENANCE Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA Co-patentee before: STATE GRID FUJIAN MAINTENANCE Co. Co-patentee before: STATE GRID PUTIAN ELECTRIC POWER SUPPLY Co. |
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