CN102360058A - Method for discriminating operation fault of transmission line tower grounding network - Google Patents
Method for discriminating operation fault of transmission line tower grounding network Download PDFInfo
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- CN102360058A CN102360058A CN2011103200824A CN201110320082A CN102360058A CN 102360058 A CN102360058 A CN 102360058A CN 2011103200824 A CN2011103200824 A CN 2011103200824A CN 201110320082 A CN201110320082 A CN 201110320082A CN 102360058 A CN102360058 A CN 102360058A
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Abstract
The invention relates to a method for discriminating the operation fault of a transmission line tower grounding network, which comprises the following steps of: (1) performing real-time and on-site data acquisition and arrangement, and establishing a transmission line tower model; (2) applying pilot frequency signal stimulus, and performing simulation calculation to obtain a grounding resistance value or an on-resistance value of the transmission line tower grounding network; and (3) discriminating according to a fault verification term to obtain a fault discrimination conclusion. The method has the advantages that: (1) the operation condition of the transmission line tower grounding network can be accurately grasped; (2) the grounding resistance value or the on-resistance value can be accurately calculated, the authenticity of a data signal is ensured, a large quantity of manpower and material resources are saved, and device, system and industrial production is easy to implement; and (3) the method is suitable for monitoring the operation conditions of the transmission line tower grounding network in various environments, and is not restricted by other factors.
Description
Technical field
The invention belongs to the electric power project engineering field, be specifically related to a kind of method of discrimination of electric power line pole tower grounded screen operation troubles.
Background technology
Electric power line pole tower grounded screen is embedded in underground, and its corrosion condition and concrete corrosion position all are to test through the earth resistance of off-line and earth-continuity to differentiate all the time.This kind method of discrimination is the labor manpower and materials not only, and uninhabited that lofty mountains and steep hills is regional powerless with big leaps that is difficult to unwrapping wire test to some.In addition, some lawless persons in the society are oneself minor benefit, steal the tower material, steal and cut power circuit, cause circuit to fall bar, broken string accident and take place frequently.Therefore; Find a kind of method whether electric power line pole tower grounded screen breaks down of differentiating, develop and a kind ofly can differentiate the device whether the tower grounding net breaks down, realize not having a power failure, not to the stake resistance actual numerical value of on-line monitoring tower grounding net under the earth mat excavation situation; And earth mat conducting situation; In time find accident potential, timely fault location point in time provides the scientific and reliable foundation for the maintenance of earth mat and transformation; Prevent the harm that the earth mat fault possibly cause, ensure that power system security, operation reliably are significant and great economic benefit and social benefit.
Summary of the invention
The technical matters that the present invention will solve is; The defective that exists during to the test job of current power transmission overhead line structures grounded screen; A kind of electric power line pole tower grounded screen operation troubles method of discrimination that is applicable to on-line monitoring electric power line pole tower grounded screen operation conditions is provided; This method can not only be guaranteed the authenticity of data-signal, and can save lot of manpower and material resources.
Technical solution of the present invention is that the above-mentioned electric power line pole tower grounded screen operation troubles method of discrimination that is provided is to be following steps:
(1), sets up model.To the electric pressure of being apprised of, structure type, dimensions and the operational factor of entrusting electric power line pole tower, use conventional method to carry out real-time on-site data gathering, data recording and data preparation.According to the data of obtain, use conventional method to set up and entrust the electric power line pole tower model then through arrangement;
(2), simulation calculation.Obtain the model of entrusting electric power line pole tower according to step (1), use conventional method that it is applied the alien frequencies signal excitation.To the electric pressure of being apprised of, structure type, dimensions and the operational factor of the said trust electric power line pole tower of step (1), use conventional method to carry out simulation calculation, obtain entrusting the grounding resistance or the conduction resistance value of electric power line pole tower grounded screen;
(3), data analysis.According to step (2) resulting trust electric power line pole tower Resistance of Grounding Grids value or conduction resistance value; Contrast " overvoltage protection and Insulation Coordination of DL/620-1997 alternating-current electric device " of China Electric Power Publishing House's publication in 1997 and the fault of " the measurement guide rule of DL/T475-2006 earthing device power frequency characterisitic parameter " relevant electric power rules that China Electric Power Publishing House published in 2006 and assert clause; Whether this trust electric power line pole tower Resistance of Grounding Grids value or conduction resistance value are constituted the differentiation of fault, must entrust electric power line pole tower grounded screen operation troubles to differentiate conclusion.Obtaining according to institute then entrusts electric power line pole tower grounded screen operation troubles to differentiate conclusion; Use conventional method to formulate and entrust the fault under the electric power line pole tower grounded screen operating condition to prevent and treat scheme; And send fault pre-alarming to the competent authorities that entrust electric power line pole tower grounded screen simultaneously, to guarantee the safe and stable operation of this trust electric power line pole tower grounded screen place transmission line of electricity.
In the method for the invention, the one, with the resistance calculations of shaft tower itself interior, considered shaft tower itself resistance value to the influence of transmission line lightning stroke trip-out rate; The one, considered when transmission line of electricity is loaded differentiating the influence of conclusion.Through applying the alien frequencies excitation, obtain final grounding resistance or conduction resistance value.
The invention has the beneficial effects as follows:
(1) can guarantee accurate assurance to the actual operating state of entrusting electric power line pole tower grounded screen;
(2) can accurately calculate the grounding resistance or the conduction resistance value of entrusting electric power line pole tower grounded screen, guarantee the authenticity of data-signal, can also save lot of manpower and material resources simultaneously, help implement deviceization, systematization, industrialization production;
(3) this method is applicable to the monitoring of various environment electric power line pole tower grounded screen operation conditionss, not restricted by other factors.
Embodiment
Embodiment 1:
(1), to the electric pressure of being apprised of, structure type, dimensions and the operational factor of entrusting electric power line pole tower, use conventional method to carry out real-time on-site data gathering, data recording and data preparation.According to the data of obtain, use conventional method to set up and entrust the electric power line pole tower model then through arrangement;
(2), obtain the model of entrusting electric power line pole tower, use conventional method that it is applied the alien frequencies signal excitation according to step (1).To the electric pressure of being apprised of, structure type, dimensions and the operational factor of the said trust electric power line pole tower of step (1), use conventional method to carry out simulation calculation, obtain entrusting the grounding resistance or the conduction resistance value of electric power line pole tower grounded screen;
(3), establishing step (2) resulting is to entrust electric power line pole tower Resistance of Grounding Grids value; Entrust electric power line pole tower Resistance of Grounding Grids value to assert clause according to step (2) gained according to the fault of " the measurement guide rule of DL/T475-2006 earthing device power frequency characterisitic parameter " relevant electric power rules of " overvoltage protection and Insulation Coordination of DL/620-1997 alternating-current electric device " and the China Electric Power Publishing House publication in 2006 of China Electric Power Publishing House's publication in 1997; Whether this trust electric power line pole tower Resistance of Grounding Grids value is constituted the differentiation of fault, must entrust electric power line pole tower grounded screen operation troubles to differentiate conclusion.
Embodiment 2:
Step (1)～(2) are with embodiment 1;
(3), establishing step (2) resulting is to entrust electric power line pole tower grounded screen conduction resistance value; Entrust electric power line pole tower grounded screen conduction resistance value to assert clause according to step (2) gained according to the fault of " the measurement guide rule of DL/T475-2006 earthing device power frequency characterisitic parameter " relevant electric power rules of " overvoltage protection and Insulation Coordination of DL/620-1997 alternating-current electric device " and the China Electric Power Publishing House publication in 2006 of China Electric Power Publishing House's publication in 1997; Whether this trust electric power line pole tower grounded screen conduction resistance value is constituted the differentiation of fault, must entrust electric power line pole tower grounded screen operation troubles to differentiate conclusion.
Claims (1)
1. electric power line pole tower grounded screen operation troubles method of discrimination, this method is following step:
(1), to the electric pressure of being apprised of, structure type, dimensions and the operational factor of entrusting electric power line pole tower; Use conventional method to carry out real-time on-site data gathering, data recording and data preparation; According to the data of obtain, use conventional method to set up and entrust the electric power line pole tower model then through arrangement;
(2), obtain the model of entrusting electric power line pole tower according to step (1); Use conventional method that it is applied the alien frequencies signal excitation; The electric pressure of being apprised of, structure type, dimensions and operational factor to the said trust electric power line pole tower of step (1); Use conventional method to carry out simulation calculation, obtain entrusting the grounding resistance or the conduction resistance value of electric power line pole tower grounded screen;
(3), according to step (2) resulting trust electric power line pole tower Resistance of Grounding Grids value or conduction resistance value; Contrast " overvoltage protection and Insulation Coordination of DL/620-1997 alternating-current electric device " of China Electric Power Publishing House's publication in 1997 and the fault of " the measurement guide rule of DL/T475-2006 earthing device power frequency characterisitic parameter " relevant electric power rules that China Electric Power Publishing House published in 2006 and assert clause; Whether this trust electric power line pole tower Resistance of Grounding Grids value or conduction resistance value are constituted the differentiation of fault, must entrust electric power line pole tower grounded screen operation troubles to differentiate conclusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103200824A CN102360058A (en) | 2011-10-20 | 2011-10-20 | Method for discriminating operation fault of transmission line tower grounding network |
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| CN2011103200824A CN102360058A (en) | 2011-10-20 | 2011-10-20 | Method for discriminating operation fault of transmission line tower grounding network |
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| CN102360058A true CN102360058A (en) | 2012-02-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707167A (en) * | 2012-05-18 | 2012-10-03 | 华中科技大学 | State monitoring system for grounding grid based on industrial personal computer |
| CN105652139A (en) * | 2015-12-30 | 2016-06-08 | 国家电网公司 | Method for testing conductivity of grounding grid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266270A (en) * | 2008-05-06 | 2008-09-17 | 重庆大学 | Pile foundation tower-footing impedance measuring apparatus and its method |
| CN201307148Y (en) * | 2008-10-10 | 2009-09-09 | 孟宪龙 | Power transmission line pole and tower ground fault monitoring and positioning device |
-
2011
- 2011-10-20 CN CN2011103200824A patent/CN102360058A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266270A (en) * | 2008-05-06 | 2008-09-17 | 重庆大学 | Pile foundation tower-footing impedance measuring apparatus and its method |
| CN201307148Y (en) * | 2008-10-10 | 2009-09-09 | 孟宪龙 | Power transmission line pole and tower ground fault monitoring and positioning device |
Non-Patent Citations (2)
| Title |
|---|
| 何智强等: "变电站地网接地阻抗感性分量影响因素分析", 《湖南电力》 * |
| 张科等: "变电站地网导通电阻的模拟计算与分析", 《河南电力》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707167A (en) * | 2012-05-18 | 2012-10-03 | 华中科技大学 | State monitoring system for grounding grid based on industrial personal computer |
| CN105652139A (en) * | 2015-12-30 | 2016-06-08 | 国家电网公司 | Method for testing conductivity of grounding grid |
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Owner name: HU NAN XIANGDIAN TRIAL RESEARCH TECHNOLOGY CO., LT Free format text: FORMER OWNER: HU NAN XIANGDIAN TRIAL RESEARCH TECHNOLOGY CO., LTD. ZHUHAI TOP INTELLIGENCE ELECTRICCO., LTD. Effective date: 20121029 |
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Effective date of registration: 20121029 Address after: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Applicant after: Science Research Institute of Hunan Electric Power Co., Ltd. Applicant after: Hunan Xiangdian Electric Power Text & Research Co., Ltd. Applicant after: Zhuhai Top Intelligence Electric Co., Ltd. Applicant after: State Grid Corporation of China Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Applicant before: Science Research Institute of Hunan Electric Power Co., Ltd. Applicant before: Hunan Xiangdian Electric Power Text & Research Co., Ltd. Applicant before: Zhuhai Top Intelligence Electric Co., Ltd. |
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Application publication date: 20120222 |