CN105119282A - On-line calculation system and method for theoretical line loss of power grid - Google Patents
On-line calculation system and method for theoretical line loss of power grid Download PDFInfo
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Abstract
The invention discloses an on-line calculation system and method for the theoretical line loss of a power grid, and the method comprises the steps: reading topological structure data from a GIS information system in a mode of interface service, and storing the topological structure data in a line loss calculation database; reading the parameters of operation equipment from a PMS system in a mode of interface service, and storing the parameters in the line loss calculation database; reading operation data from a Open3000 system and a power utilization information collection system in a mode of interface service, and storing the operation data in the line loss calculation database; achieving the querying, reading and verifying of a graphic structure, equipment parameters and operation data stored in the line loss calculation database; employing the Newton-Raphson power flow algorithm to calculate the theoretical line loss, and displaying calculation results in a mode of graphics. The system and method effectively improve the accuracy of line loss calculation results and work efficiency, and alleviates the labor of a calculation worker in searching and processing data. The calculation results are in real time, are accurate and comprehensive, and correctly reflect the condition of power loss in a transmission process of power.
Description
Technical field
The invention belongs to power distribution network theoretical line loss caluclation technical field, particularly relate to the online computing system of a kind of Calculating Network Theoretical Line Loss and method.
Background technology
Theoretical line loss caluclation work is the task that electric power enterprise must do every year, it is that to choose some day in 1 year be representative day, calculate the line loss rate of this day the whole network, and then the electric quantity loss situation of the circuit of each electric pressure of analysis the whole network, transformer and element, find out electrical network to weigh, gently damage circuit and weigh, gently damage transformer, find the weak link in operation of power networks, to inspection Electric Power Network Planning and transformation level, the economic benefit important role promoting electric power enterprise.Carry out theoretical line loss caluclation except the theoretical line loss caluclation method that will have, most basic is need to provide electric network information accurately, these data mainly contain topological structure of electric, device parameter and service data, this is the data source of carrying out theoretical line loss caluclation, only have and provide these information could calculate correct Calculating Network Theoretical Line Loss result of calculation in theoretical line loss caluclation system accurately, in time, accurately could reflect the actual conditions of electrical network.
These information lean on artificial mode to obtain from the system such as GIS, OPEN3000, power information collection, PMS substantially at present, then manual entry and maintenance is carried out, because desired data amount is huge, typing length consuming time, do not possess instantaneity, and it is low to there is accuracy, the not congruent problem of data, cause representing and incur loss through delay computing time day and analytic function reduction, and line loss calculation interface does not have graphical representation, cause operated by personnel directly perceived, cannot the concrete equipment situation of fast reaction, have impact on the operating efficiency of line loss calculation greatly.
Summary of the invention
The object of the present invention is to provide the online computing system of a kind of Calculating Network Theoretical Line Loss and method, be intended to solve current Calculating Network Theoretical Line Loss Data Enter length consuming time, do not possess instantaneity, accuracy is low, and data are complete, causes representing incuring loss through delay computing time day and analytic function reduction, and line loss calculation interface does not have graphical representation, cause operated by personnel directly perceived, cannot the concrete equipment situation of fast reaction, the extreme influence problem of line loss calculation operating efficiency.
The present invention is achieved in that a kind of Calculating Network Theoretical Line Loss on-line calculation method, and described Calculating Network Theoretical Line Loss on-line calculation method comprises:
Step one, to read in the mode of interface service from GIS information system that electrical network is joined, the topology data of defeated, power transformation, and being stored in line loss calculation database, the topological relation required for the structural generation theoretical line loss caluclation of GIS is to meet line loss calculation needs; Graph topology generates realization means: dispatching CIM data pattern file by reading Open3000, according to the topological structure in CIM file, analyzing the model in anti-generative theory line loss calculation system, and model comprises topological structure relation and station external structure relation in station.
Step 2, read the parameter of operational outfit from PMS system in the mode of interface service, comprising wire parameter and the transformer parameter of distribution, the line parameter circuit value of transmission of electricity, the transformer of power transformation, electricity consumption of standing, capacitor parameters, and be stored in line loss calculation database; Device parameter imports realization means: according to the anti-graphics device generated of CIM data, set up corresponding relation with PMS device parameter database facility, import corresponding device parameter, capital equipment comprises transmission line, two winding transformer and three-circuit transformer.
Step 3, to read from Open3000 system and power information acquisition system in the mode of interface service join, the service data of power transformation be stored in line loss calculation database; Its data area comprises outlet critical point power, busbar voltage, user power, load tap changer position, on off state, capacitor put into operation capacity and station power consumption.This functional module comprises digital independent analysis, data relay, corresponding relation management and data importing module.
Step 4, utilize multibreak the suspicious parameter identification of result of calculation cluster of line parameter circuit value and locate bad method for measurement, the distributed state estimation method of the maximum considerable collection of service data realizes inquiring about the graphic structure stored in line loss calculation database, device parameter, service data and verifying;
Step 5, Newton-Raphson trend method is utilized to carry out theory wire loss in line computation, and determine the influence degree of injecting power to network loss according to the size of network loss to the sensitivity of node injecting power, science correction is carried out to line losses management result, thus efficiently reduces the error brought due to notch cuttype data in line loss calculation.
Further, described query function comprises:
Check graph topology, grasp, check the mode of connection and the ruuning situation of equipment;
Check device parameter, the operational outfit parameter imported is checked;
Check service data, check the ruuning situation of electrical network.
Further, described verifying function comprises: to the data check of operation system, reflects the level of each operation system to data acquisition from result of calculation, and timely reponse system is corrected by existence mistake or problematic data.
Wherein, line parameter circuit value is estimated and method of calibration is: utilize a kind of multibreak result of calculation cluster to line parameter circuit value to carry out the method that the suspicious parameter of identification locates bad measurement simultaneously, and then provide a kind of method to suspicious parameter and bad measurement correction, obtain the approximation that deviation is less.From physical connection, electrical connection and power delivery tripartite surface analysis, and adopt game theory to obtain the synthesis pertinence of grid nodes, to avoid residual contamination and residual error to flood, improve the accuracy of line estimation result further.In conjunction with many Agent Theory, improve computational efficiency, using every bar circuit as a branch road agency (Agent, be called for short AG), realize the identification of suspicious parameter, the location of correction and bad measurement, correction, coordinating agent (CoordinationAgent is called for short CAG) is set and completes parameter Estimation, branch road AG and CAG coordinates to revise, and ensures the reliability of final result.Simulation analysis result indicates feasibility and the validity of institute's extracting method.
Service data is estimated and modification method: the distributed state estimation method adopting maximum considerable collection, and the multi-agent technology combined based on blackboard model realizes.The method, on the basis solving maximum considerable collection, proposes the method for carrying out subregion according to node degree of association concept.On the basis analysing in depth the suspicious measuring set after linear screening, give according to suspicious data quantity and can overcome the bad data recognition method that residual contamination and residual error flood phenomenon.Emulation testing has absolutely proved validity, rapidity, the accuracy of this method, has stronger anti-interference for bad data.And the method is when system is inconsiderable, state and the power estimation value of all considerable nodes accurately can be calculated to greatest extent.
Another object of the present invention is to provide a kind of Calculating Network Theoretical Line Loss online computing system, the online computing system of described Calculating Network Theoretical Line Loss comprises:
Topological relation module, to read in the mode of interface service from GIS information system that electrical network is joined, the topology data of defeated, power transformation, and being stored in line loss calculation database, the topological relation required for the structural generation theoretical line loss caluclation system of GIS is to meet line loss calculation needs;
Device parameter read module, read the parameter of operational outfit from PMS system in the mode of interface service, comprising wire parameter and the transformer parameter of distribution, the line parameter circuit value of transmission of electricity, the transformer of power transformation, electricity consumption of standing, capacitor parameters, and be stored in line loss calculation database;
Line loss data memory module, to read from Open3000 system and power information acquisition system in the mode of interface service join, the service data of power transformation be stored in line loss calculation database;
Inquiry and correction verification module, realize inquiring about the graphic structure stored in line loss calculation database, device parameter, service data and verifying;
Line loss calculation module, utilizes Newton-Raphson trend method to carry out line loss calculation.
Further, the query function of described enquiry module comprises:
Check graph topology, grasp the mode of connection and the ruuning situation of equipment;
Check device parameter, the operational outfit parameter imported is checked;
Check service data, check the ruuning situation of electrical network.
Further, the verifying function of described correction verification module comprises: to the data check of operation system, reflects the level of each operation system to data acquisition from result of calculation, and timely reponse system is corrected by existence mistake or problematic data.
The online computing system of Calculating Network Theoretical Line Loss provided by the invention and method, take full advantage of the function of each operation system of electric power enterprise, the automatic generation of graph topology structure, the automatic reading of device parameter, being automatically imported of service data is achieved with the form of service interface, and achieve inquiry, the School Affairs feedback function of data in systems in which, and the graphical representation box of result of calculation is analyzed.It is synchronous that the online computing system of theory wire loss that this invention designs realizes each service data consistence, the data of current calculating are made to be actual traffic data, effective accuracy rate of raising line loss calculation result and the efficiency of work, alleviate the huge amount of labour of computing staff's collection, deal with data, finally obtain real-time, accurate, valuable line loss calculation result, the electric quantity loss situation reflected in the process of transmitting electric power that can be comprehensive, correct.Informationization compared with conventional method, automatization level significantly improve, and have very strong operability and engineer applied value.The present invention's utilize Newton-Raphson trend method to carry out graphical representation function that the online computing system of line loss calculation theory wire loss realizes result of calculation, make operated by personnel more directly perceived, fast reaction equipment line loss situation, greatly improves the operating efficiency of line loss calculation.
Accompanying drawing explanation
Fig. 1 is the Calculating Network Theoretical Line Loss on-line calculation method flow chart that the embodiment of the present invention provides.
Fig. 2 is the connection diagram of the online computing system of Calculating Network Theoretical Line Loss that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Present invention achieves the integrated of each operation system of electric power enterprise, a kind of topological structure of electric is provided automatically to generate, electrical network parameter and service data are automatically imported, and there is check sum query function, and to existence mistake or there is data feedback operation system accurately, can the theory wire loss on-line calculation method of line loss calculation analysis result of real time inspection graphical representation.
Below in conjunction with accompanying drawing, application principle of the present invention is further described.
As shown in Figure 1, the Calculating Network Theoretical Line Loss on-line calculation method of the embodiment of the present invention comprises the following steps:
S101: theoretical line loss caluclation system to read in the mode of interface service from GIS information system that electrical network is joined, the topology data of defeated, power transformation, and being stored in line loss calculation database, the topological relation required for the structural generation theoretical line loss caluclation system of GIS is to meet line loss calculation needs;
S102: theoretical line loss caluclation system reads the parameter of operational outfit from PMS system in the mode of interface service, comprising wire parameter and the transformer parameter of distribution, the line parameter circuit value of transmission of electricity, the transformer of power transformation, electricity consumption of standing, capacitor parameters, and be stored in line loss calculation database;
S103: theoretical line loss caluclation system to read from Open3000 system and power information acquisition system in the mode of interface service join, the service data of power transformation be stored in line loss calculation database;
S104: theoretical line loss caluclation system can realize inquiring about the graphic structure stored in line loss calculation database, device parameter, service data and verifying;
S105: utilize Newton-Raphson trend method to carry out line loss calculation, the online computing system of theory wire loss realizes the graphical representation function of result of calculation.
In step S104,1) query function comprises: check graph topology, can grasp the mode of connection and the ruuning situation of equipment, be conducive to line loss analyzing personnel and grasp electric network composition situation comprehensively; Check device parameter, the operational outfit parameter imported is checked, device parameter situation can be grasped, whether wrong etc.; Check service data, the ruuning situation of electrical network can be checked.2) verifying function comprises: to the data check of operation system, in theoretical line loss caluclation process, because data source is automatically imported from each operation system, the level of each operation system to data acquisition can be reflected, if timely reponse system is corrected by existence mistake or problematic data from result of calculation.
Wherein, line parameter circuit value is estimated and method of calibration is: utilize a kind of multibreak result of calculation cluster to line parameter circuit value to carry out the method that the suspicious parameter of identification locates bad measurement simultaneously, and then provide a kind of method to suspicious parameter and bad measurement correction, obtain the approximation that deviation is less.From physical connection, electrical connection and power delivery tripartite surface analysis, and adopt game theory to obtain the synthesis pertinence of grid nodes, to avoid residual contamination and residual error to flood, improve the accuracy of line estimation result further.In conjunction with many Agent Theory, improve computational efficiency, using every bar circuit as a branch road agency (Agent, be called for short AG), realize the identification of suspicious parameter, the location of correction and bad measurement, correction, coordinating agent (CoordinationAgent is called for short CAG) is set and completes parameter Estimation, branch road AG and CAG coordinates to revise, and ensures the reliability of final result.Simulation analysis result indicates feasibility and the validity of institute's extracting method.
Service data is estimated and modification method: the distributed state estimation method adopting maximum considerable collection, and the multi-agent technology combined based on blackboard model realizes.The method, on the basis solving maximum considerable collection, proposes the method for carrying out subregion according to node degree of association concept.On the basis analysing in depth the suspicious measuring set after linear screening, give according to suspicious data quantity and can overcome the bad data recognition method that residual contamination and residual error flood phenomenon.Emulation testing has absolutely proved validity, rapidity, the accuracy of this method, has stronger anti-interference for bad data.And the method is when system is inconsiderable, state and the power estimation value of all considerable nodes accurately can be calculated to greatest extent.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a Calculating Network Theoretical Line Loss on-line calculation method, is characterized in that, described Calculating Network Theoretical Line Loss on-line calculation method comprises:
Step one, to read in the mode of interface service from GIS information system that electrical network is joined, the topology data of defeated, power transformation, and being stored in line loss calculation database, the topological relation required for the structural generation theoretical line loss caluclation of GIS is to meet line loss calculation needs;
Step 2, read the parameter of operational outfit from PMS system in the mode of interface service, comprising wire parameter and the transformer parameter of distribution, the line parameter circuit value of transmission of electricity, the transformer of power transformation, electricity consumption of standing, capacitor parameters, and be stored in line loss calculation database;
Step 3, to read from Open3000 system and power information acquisition system in the mode of interface service join, the service data of power transformation be stored in line loss calculation database;
Step 4, realizes inquiring about the graphic structure stored in line loss calculation database, device parameter, service data and verifying;
Step 5, utilizes Newton-Raphson trend method to carry out line loss calculation theory wire loss in line computation.
2. Calculating Network Theoretical Line Loss on-line calculation method as claimed in claim 1, it is characterized in that, described query function comprises:
Check graph topology, grasp the mode of connection and the ruuning situation of equipment;
Check device parameter, the operational outfit parameter imported is checked;
Check service data, check the ruuning situation of electrical network.
3. Calculating Network Theoretical Line Loss on-line calculation method as claimed in claim 1, it is characterized in that, described verifying function comprises: to the data check of operation system, reflect the level of each operation system to data acquisition from result of calculation, timely reponse system is corrected by existence mistake or problematic data.
4. the online computing system of Calculating Network Theoretical Line Loss of Calculating Network Theoretical Line Loss on-line calculation method as claimed in claim 1, is characterized in that, the online computing system of described Calculating Network Theoretical Line Loss comprises:
Topological relation module, to read in the mode of interface service from GIS information system that electrical network is joined, the topology data of defeated, power transformation, and being stored in line loss calculation database, the topological relation required for the structural generation theoretical line loss caluclation system of GIS is to meet line loss calculation needs;
Device parameter read module, read the parameter of operational outfit from PMS system in the mode of interface service, comprising wire parameter and the transformer parameter of distribution, the line parameter circuit value of transmission of electricity, the transformer of power transformation, electricity consumption of standing, capacitor parameters, and be stored in line loss calculation database;
Line loss data memory module, to read from Open3000 system and power information acquisition system in the mode of interface service join, the service data of power transformation be stored in line loss calculation database;
Inquiry and correction verification module, realize inquiring about the graphic structure stored in line loss calculation database, device parameter, service data and verifying;
Line loss calculation module, utilizes Newton-Raphson trend method to carry out line loss calculation.
5. the online computing system of Calculating Network Theoretical Line Loss as claimed in claim 4, it is characterized in that, the query function of described enquiry module comprises:
Check graph topology, grasp the mode of connection and the ruuning situation of equipment;
Check device parameter, the operational outfit parameter imported is checked;
Check service data, check the ruuning situation of electrical network.
6. the online computing system of Calculating Network Theoretical Line Loss as claimed in claim 4, it is characterized in that, the verifying function of described correction verification module comprises: to the data check of operation system, reflect the level of each operation system to data acquisition from result of calculation, timely reponse system is corrected by existence mistake or problematic data.
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| CN105811406A (en) * | 2016-04-13 | 2016-07-27 | 国网冀北电力有限公司电力科学研究院 | High-voltage power grid line loss level evaluation method |
| CN105894213A (en) * | 2016-04-27 | 2016-08-24 | 东北大学 | Multi-agent grid fault diagnosis system and method based on blackboard model |
| CN107644384A (en) * | 2016-07-20 | 2018-01-30 | 中国电力科学研究院 | A kind of method and system of alternating current-direct current grid theoretical line loss caluclation |
| CN108490314A (en) * | 2018-04-26 | 2018-09-04 | 贵州电网有限责任公司 | A kind of distribution line calculation method of parameters based on distribution generalized information system |
| CN109214684A (en) * | 2018-09-06 | 2019-01-15 | 国网福建省电力有限公司电力科学研究院 | A kind of distribution line theory wire loss on-line calculation method |
| CN110376464A (en) * | 2019-07-23 | 2019-10-25 | 国网河北省电力有限公司故城县供电分公司 | Interconnection type grid line loss monitoring system and method |
| CN110427631A (en) * | 2019-03-27 | 2019-11-08 | 贵州电网有限责任公司 | Major network route needed for theoretical line loss caluclation and the dual check method of transformer parameter |
| CN112666420A (en) * | 2021-03-18 | 2021-04-16 | 国网山东省电力公司安丘市供电公司 | Power transmission and transformation equipment line loss abnormity detection method, system, terminal and storage medium |
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Cited By (10)
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| CN105811406A (en) * | 2016-04-13 | 2016-07-27 | 国网冀北电力有限公司电力科学研究院 | High-voltage power grid line loss level evaluation method |
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| CN105894213B (en) * | 2016-04-27 | 2019-10-11 | 东北大学 | A kind of multiple agent electric network failure diagnosis system and method based on blackboard model |
| CN107644384A (en) * | 2016-07-20 | 2018-01-30 | 中国电力科学研究院 | A kind of method and system of alternating current-direct current grid theoretical line loss caluclation |
| CN108490314A (en) * | 2018-04-26 | 2018-09-04 | 贵州电网有限责任公司 | A kind of distribution line calculation method of parameters based on distribution generalized information system |
| CN109214684A (en) * | 2018-09-06 | 2019-01-15 | 国网福建省电力有限公司电力科学研究院 | A kind of distribution line theory wire loss on-line calculation method |
| CN110427631A (en) * | 2019-03-27 | 2019-11-08 | 贵州电网有限责任公司 | Major network route needed for theoretical line loss caluclation and the dual check method of transformer parameter |
| CN110427631B (en) * | 2019-03-27 | 2023-03-10 | 贵州电网有限责任公司 | Double checking method for main network line and transformer parameters required by theoretical line loss calculation |
| CN110376464A (en) * | 2019-07-23 | 2019-10-25 | 国网河北省电力有限公司故城县供电分公司 | Interconnection type grid line loss monitoring system and method |
| CN112666420A (en) * | 2021-03-18 | 2021-04-16 | 国网山东省电力公司安丘市供电公司 | Power transmission and transformation equipment line loss abnormity detection method, system, terminal and storage medium |
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Application publication date: 20151202 |