CN104242297B - A kind of method of electric voltage exception location and the analysis of causes - Google Patents
A kind of method of electric voltage exception location and the analysis of causes Download PDFInfo
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- CN104242297B CN104242297B CN201410319164.0A CN201410319164A CN104242297B CN 104242297 B CN104242297 B CN 104242297B CN 201410319164 A CN201410319164 A CN 201410319164A CN 104242297 B CN104242297 B CN 104242297B
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Abstract
The method that the invention discloses a kind of electric voltage exception location and the analysis of causes。The present invention includes the step of abnormal positioning step and the analysis of causes。The present invention is a kind of method that abnormal location combines with failure reason analysis。Occurring after extremely at line voltage, the present invention comprehensively analyzes from planning and designing, construction, technological transformation, four aspects of operational management, helps power supply enterprise's positioning voltage abnormal cause。The method and system can integrate topological structure of electric, facility information and service data automatically, are automatically analyzed and localized reason, and automatically export diagnosis report。This method solve traditional analysis work length big, consuming time, easily make mistakes, not comprehensively, the problem such as automaticity is low。
Description
Technical field
The present invention relates to the field of electric voltage exception automated analysis report in administration of power networks。
Background technology
In power system, whether line voltage normally directly influences safety and the performance driving economy of electrical network, therefore the voltage levvl of each electric pressure of electrical network is the important parameter of power scheduling department monitoring, is also the important indicator of Utilities Electric Co.'s management evaluation from supervision department of State Grid to each level。It practice, Operating Voltage is subject to the impact of all many-sided factors, it contains the various key elements in links such as including planning and designing, construction, technological transformation, operational management。Influence each other between various key elements, intricate, every kind of key element is also all associated with a large amount of infrastructure device information and history data information。Thus, the analysis mode of the off-line simulation instruments such as existing manual analysis mode or dependence etap, it is difficult to realize accurately and location causes electric voltage exception Formation causes all sidedly。
Along with the development of the information system such as power dispatching automation, production management system is with ripe, the big Data Integration to topological structure of electric, facility information and service data can be realized, based on these integral data, adopt line voltage exception analysis method and the system of stratification, it is achieved its reason positions。
Summary of the invention
Problem to be solved by this invention is: what line voltage was abnormal positions and the abnormal analysis of causes。
For solving the problems referred to above, the scheme that the present invention adopts is as follows:
The method of a kind of electric voltage exception location and the analysis of causes, comprises the following steps:
S1: obtain topological structure of electric at different levels, facility information and service data；
S2: analysis and assessment unit based on transformer station, near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, and each transformer station is performed following steps:
S21: read low-pressure side (if there being medium voltage side, processing too, the lower same) busbar voltage of transformer station in some cycles, it is judged that whether it more limit value event occurs；If there is not out-of-limit event, showing our station normal operation, continuing to analyze next transformer station；If generation out-of-limit event, then continue executing with step S22；
S22: if substation low-voltage side busbar voltage is out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should associate to higher level transformer station, and turns the step of Analysis on Abnormal in the station of higher level transformer station；Otherwise, step S23 is continued executing with；
According to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation, S23: if substation low-voltage side busbar voltage is out-of-limit, carries out whether comprehensive descision is subject to the impact of subordinate；If being subject to the impact of subordinate, then the step of Analysis on Abnormal in the station of higher level transformer station of walking around；Otherwise, step S24 is continued executing with；
S24: deduct the contribution degree of upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes that out-of-limit exception occurs voltage, turns the step of Analysis on Abnormal in the station of this transformer station of standing；Otherwise continue to analyze next transformer station；
In described station, the step of Analysis on Abnormal comprises the following steps:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management；
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability；
S33: the ABCDE type load district belonging to service area of transformer station combines corresponding electrical reticulation design directive/guide requirement, it is judged that the compliance of design。
The technique effect of the present invention: the present invention is a kind of method that abnormal location combines with failure reason analysis。Occurring after extremely at line voltage, the present invention comprehensively analyzes from planning and designing, construction, technological transformation, four aspects of operational management, helps power supply enterprise's positioning voltage abnormal cause。The method and system can integrate topological structure of electric, facility information and service data automatically, are automatically analyzed and localized reason, and automatically export diagnosis report。This method solve traditional analysis work length big, consuming time, easily make mistakes, not comprehensively, the problem such as automaticity is low。
Accompanying drawing explanation
Fig. 1 is that transformer station is positioned and the schematic flow sheet of the analysis of causes by the present invention。
Fig. 2 is the transformer substation voltage of the present invention analysis strategy when getting over the upper limit。
Fig. 3 is the transformer substation voltage of the present invention analysis strategy when getting over lower limit。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further。
The topological structure of electric at different levels of the present invention, facility information and service data derive from EMS Energy Management System, or the present invention is subordinated to a part for EMS Energy Management System。Wherein the information of topological structure of electric includes: major network topological model: 1. unit-> plant stand-> bus section-> line；2. unit-> plant stand-> main transformer-> winding (hanging on bus section)；3. unit-> plant stand-> capacitor, reactor。Facility information is equipment static state archives, including: 1. the rated voltage of main transformer, rated capacity, voltage ratio, gear, whether have the static informations such as load；2. the static information such as the rated voltage of capacitor, rated current, rated capacity。Service data includes telemetry and remote signalling data。Wherein telemetry includes the Uac of 1. bus sectional lized 5 minutes granularities；2. P, Q of 5 minutes granularities of line, main transformer three side winding；3. the gear remote measurement value of 5 minutes granularities of main transformer；4. the Q of condenser reactance device 5 clock granularity。Remote signalling data includes the remote signalling data 2. capacitor of 1. main shift adjustment action, the remote signalling data removing action thrown by reactor。
The invention mainly comprises two steps, abnormal location and the analysis of causes。Wherein abnormal position fixing process is analysis and assessment unit based on transformer station, from near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, and each transformer station is traveled through, and in ergodic process, each transformer station is performed step as shown in Figure 1:
S21: read low-pressure side (if there being medium voltage side, processing too, the lower same) busbar voltage of transformer station in some cycles, it is judged that whether it more limit value event occurs；If there is not out-of-limit event, showing our station normal operation, continuing to analyze next transformer station；If generation out-of-limit event, then continue executing with step S22。Here some cycles can be one week or one month or two weeks。
S22: if substation low-voltage side busbar voltage is out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should associate to higher level transformer station, and turns the step of Analysis on Abnormal in the station of higher level transformer station；Otherwise, step S23 is continued executing with。
According to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation, S23: if substation low-voltage side busbar voltage is out-of-limit, carries out whether comprehensive descision is subject to the impact of subordinate；If being subject to the impact of subordinate, then the step of Analysis on Abnormal in the station of higher level transformer station of walking around；Otherwise, step S24 is continued executing with。
S24: deduct the contribution degree of upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes that out-of-limit exception occurs voltage, turns the step of Analysis on Abnormal in the station of this transformer station of standing；Otherwise continue to analyze next transformer station。
Wherein in step S22, S23 and step S24, in station, the step of Analysis on Abnormal is identical, is the step of the analysis of causes, and institute is the difference is that input difference。The step of Analysis on Abnormal is for evaluating successively propulsion mode according to analyzing capacity of equipment from operational management in standing, it is achieved one-level reason, two grades of reasons location。
The one-level reason of electric voltage exception analysis, two grades of reasons collect as shown in the table。
Specifically, in standing, the step of Analysis on Abnormal includes following sub-step:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management；
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability；
S33: the ABCDE type load district belonging to service area of transformer station combines corresponding electrical reticulation design directive/guide requirement, it is judged that the compliance of design。
The strategy that step S31, S32, S33 judge is as shown in Figure 2,3。
After above-mentioned steps has processed, generate form。Form according to electric network composition, by department, carry out collecting statistics by dimensions such as transformer stations, adopt figure and list mode to show diagnosis report。
1) undertaken collecting statistics and showing by unit, it is achieved province and district, county, business office collect statistics step by step and show。
2) carry out collecting statistics and showing according to component voltage layer, point service area。
3) carry out collecting statistics and showing according to transformer station
The mode shown:
1) adopting Pareto diagram to show, it is the quality problems that will appear from and quality improvement project is arranged in order according to significance level, it is determined that produce the principal element of quality problems。
2) it is shown according to form
3) by connecting and can, by data such as the voltage of association, power, power factor, load factors, be associated showing with curve chart。
Claims (1)
1. the method for an electric voltage exception location and the analysis of causes, it is characterised in that comprise the following steps:
S1: obtain topological structure of electric at different levels, facility information and service data；
S2: analysis and assessment unit based on transformer station, near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, and each transformer station is performed following steps:
S21: read the low-pressure side bus voltage of transformer station in some cycles, it is judged that whether it more limit value event occurs；If there being medium voltage side, read the medium voltage side busbar voltage of transformer station in some cycles, it is judged that whether it more limit value event occurs；If out-of-limit event does not occur for low-pressure side and medium voltage side busbar voltage, show our station normal operation, continue to analyze next transformer station；If generation out-of-limit event, then continue executing with step S22；
S22: if substation low-voltage side or medium voltage side busbar voltage are out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should associate to higher level transformer station, and turns the step of Analysis on Abnormal in the station of higher level transformer station；Otherwise, step S23 is continued executing with；
S23: if substation low-voltage side or medium voltage side busbar voltage are out-of-limit, carry out whether comprehensive descision is subject to the impact of subordinate according to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation；If being subject to the impact of subordinate, the step of Analysis on Abnormal in the station of transformer station of Ze Zhuan subordinate；Otherwise, step S24 is continued executing with；
S24: deduct the contribution degree of upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes that out-of-limit exception occurs voltage, turns the step of Analysis on Abnormal in the station of this transformer station of standing；Otherwise continue to analyze next transformer station；
In described station, the step of Analysis on Abnormal is for evaluating successively propulsion mode according to analyzing capacity of equipment from operational management, it is achieved one-level reason, two grades of reasons location, this step comprises the following steps:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management；
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability；
S33: the loading zone belonging to service area of transformer station combines corresponding electrical reticulation design directive/guide requirement, it is judged that the compliance of design。
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106443363A (en) * | 2016-11-21 | 2017-02-22 | 深圳供电局有限公司 | Method, device and system for monitoring power supply capacity abnormality in power grid |
| CN106443279A (en) * | 2016-11-21 | 2017-02-22 | 深圳供电局有限公司 | A monitoring method, apparatus and system for operation management abnormity in a power grid |
| CN106786627A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of transformer station's step voltage control method and system |
| CN106786646A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of line level voltage control method and system |
| CN109118124B (en) * | 2018-09-26 | 2022-02-11 | 国网安徽省电力有限公司芜湖供电公司 | Transformer area outlet low voltage reason diagnosis method based on feature recognition |
| CN110266000B (en) * | 2019-06-17 | 2022-07-19 | 国网江苏省电力有限公司 | Power distribution network voltage out-of-limit reason analysis method, system and storage medium |
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| CN102411117A (en) * | 2011-08-09 | 2012-04-11 | 中国电力科学研究院 | Method for positioning short-circuit fault of distribution network based on distributed intelligent multi-calibration |
| CN102790383A (en) * | 2012-08-20 | 2012-11-21 | 山东大学 | Automatic rapid protection control method of novel feeder |
| CN102928738A (en) * | 2012-10-31 | 2013-02-13 | 辽宁省电力有限公司沈阳供电公司 | Dynamic layer diagnostic device and method of smart power grid fault |
| CN103679559A (en) * | 2013-12-23 | 2014-03-26 | 国家电网公司 | Visual grid system and fault identification method thereof |
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| CN102411117A (en) * | 2011-08-09 | 2012-04-11 | 中国电力科学研究院 | Method for positioning short-circuit fault of distribution network based on distributed intelligent multi-calibration |
| CN102790383A (en) * | 2012-08-20 | 2012-11-21 | 山东大学 | Automatic rapid protection control method of novel feeder |
| CN102928738A (en) * | 2012-10-31 | 2013-02-13 | 辽宁省电力有限公司沈阳供电公司 | Dynamic layer diagnostic device and method of smart power grid fault |
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