CN103501003A - Line loss control system - Google Patents
Line loss control system Download PDFInfo
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- CN103501003A CN103501003A CN201310493325.3A CN201310493325A CN103501003A CN 103501003 A CN103501003 A CN 103501003A CN 201310493325 A CN201310493325 A CN 201310493325A CN 103501003 A CN103501003 A CN 103501003A
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Abstract
The invention belongs to the field of a power system and automation and particularly relates to a line loss control system. The system comprises a data acquisition unit, a processing control unit and an output display unit, wherein the acquisition unit is used for acquiring basic data for line loss calculation; the basic data comprises equipment parameter information, equipment state data, actually measured data, state estimation data and electric quantity data; the processing control unit is used for receiving the basic data acquired by the acquisition unit and carrying out online calculation and result analysis on an actually measured load, line loss, network loss and the like; and the output display unit is used for receiving and displaying calculation and result data of the processing control unit. According to the line loss control system, multi-dimensional network loss management, normalized load actual measurement, multi-dimensional online statistics on the line loss rate and calculation analysis and monitoring on the theoretical line loss rate are implemented; influence of variation of a power system rack, a load level, an operation mode and the like on electric transmission and transformation equipment and the line loss of a power system is timely reflected; and data support is provided for economic operation and management of the power system.
Description
Technical field
The invention belongs to electric power system and automatic field, be specifically related to a kind of line loss control system.
Background technology
The electrical network electric energy loss is calculated and is comprised that the statistical line losses rate is calculated and the Molded Line loss rate is calculated.The statistical line losses rate is each net, the province and district city electric company line loss rate that each supplies to the electrical network in institute's compass of competency, electricity sales amount gauge table statistics draws; The Molded Line loss rate line loss rate that to be each net, province and district district electric company draw according to device parameter, load trend, property calculation affiliated defeated, change, controller switching equipment.Electrical network electric energy loss rate (claiming again line loss rate) is important economic and technical norms of concentrated expression Study on Power Grid Planning, production run and management level.
Domestic have the minority electric power enterprise to carry out the research of electrical network electric energy loss online evaluation, set up the powernet electric energy loss method of calculating and analysis based on automation system for the power network dispatching and Electric Energy Acquisition System, but can't carry out slitless connection with existing dispatching patcher, computational methods are single, do not carry out the various dimensions of multiple computational methods relatively, device parameter collection point manual maintenance amount is large, data pick-up not in time, not carrying out data check can cause result of calculation inaccurate, and can not carry out in line computation, the situation of change that can not reflect in time the electrical network electric energy loss.And can not normality carry out area power grid load measurement and the theoretical evaluation work of line loss, can not meet the requirement that the economy operation of power grid management becomes more meticulous.
Summary of the invention
The purpose of this invention is to provide a kind of line loss control system that is applied to network system, this system by and have the slitless connection of dispatching patcher now, realize the network loss management of various dimensions, the load measurement of normalization, Online statistics line loss rate and the computational analysis of Molded Line loss rate and the monitoring of various dimensions, reflected that timely Net Frame of Electric Network, load level, operational mode etc. change the impact on electrical network power transmission and transforming equipment and line loss, for the economy operation of power grid management provides Data support.
For achieving the above object, the technical solution used in the present invention is: a kind of line loss control system is characterized in that: system comprises data acquisition unit, processing and control element (PCE) and output display unit, wherein
Collecting unit: gather the basic data of calculating for line loss, basic data comprises device parameter information, device status data and measured data, Data of State Estimation and electric quantity data;
Processing and control element (PCE): receive the basic data that collecting unit gathers, and to load measurement, line loss, network loss etc. are carried out in line computation and interpretation of result;
Output display unit: accept calculating and the result data of processing and control element (PCE) and show.
As shown from the above technical solution, the line loss control system comprises that line loss based on the various dimensions computation model is in line computation and monitoring, and the described line loss based on the various dimensions computation model is the real-time monitoring for line loss rate, loss on transmission rate and the Network Loss Rate of the online computational analysis of various dimensions of line loss, loss on transmission and network loss to electrical network and electrical network in line computation and monitoring.Multiple load measurement analysis of calculation models, described multiple load measurement analysis of calculation models, comprise regional load, plant stand and transformer minimax load, transformer capacity-load ratio, regional transformer capacity-load ratio, line load rate, voltage levvl and power supply situation.Basic management, described basic management, be mainly used in the management to grid equipment parameter and collection point, by the parsing to EMS system grid topology data, realizes the slitless connection with the EMS system.
After adopting technique scheme, carry out the online computational analysis of line loss by rms current method, power integral method, state estimation, electric quantity acquisition, the situation of change that can reflect in time the electrical network electric energy loss, utilize the computational methods of various dimensions to carry out the line loss computational analysis, avoided the inaccurate of single algorithm line loss data.And consider the impact of the factors such as temperature, corona, device type and Electric Power Network Planning on result of calculation.Can carry out to line loss, loss on transmission the analytic statistics of " various dimensions management ", automatically generate the line loss analyzing report.The multiple result of calculation analysis of load measurement, can reflect the present situation of electrical network, for reasonably adjusting power system operating mode, provides Data support.Basic management, can carry out unified version management and calculation of parameter to the grid equipment parameter, by the close coupling with the EMS system, makes the collection point automatic adaptation, improved operating efficiency.
The accompanying drawing explanation
Fig. 1 is principle of the present invention, FB(flow block).
Embodiment
A kind of line loss control system is characterized in that: system comprises data acquisition unit, processing and control element (PCE) and output display unit, wherein
Collecting unit: gather the basic data of calculating for line loss, basic data comprises device parameter information, device status data and measured data, Data of State Estimation and electric quantity data;
Processing and control element (PCE): receive the basic data that collecting unit gathers, and to load measurement, line loss, network loss etc. are carried out in line computation and interpretation of result;
Output display unit: accept calculating and the result data of processing and control element (PCE) and show.
Described device parameter information is selected manual typing or peripheral system access;
Described device status data and measured data are carried out the search of the whole network automated topology and are obtained in the EMS system;
Data of State Estimation and electric quantity data are provided by EMS system and electric weight system respectively;
Above-mentioned basic data is by the scheduler task timing extraction formulated and the flaw data are carried out to data correction.
Described load measurement comprises transformer capacity-load ratio, line load rate and voltage levvl;
Described line loss is calculated and is comprised employing mean square root method, power integral method enforcement state estimation and electric quantity acquisition;
Described network loss is calculated and is comprised critical point definition, network loss form, network loss curve and network loss tabulate statistics;
Described data analysis comprises on-line monitoring, line loss comparison, line loss statement analysis, load measurement report analysis.
The line loss control system comprises line loss calculating, according to certain data collection cycle, electric network composition is carried out to topology and obtain measured data and grid equipment detail parameters from peripheral support system (as: EMS system etc.), carry out the theoretical calculating of line loss (computational methods comprise: the calculating of rms current method and power integral etc.) and multiple line loss result and compare analysis.Load measurement, carry out load measurement calculating (content of calculating comprises: transformer capacity-load ratio, line load rate etc.) according to the image data of collection point.The network loss management, according to the result that theory wire loss calculates and statistical line losses calculates, count respectively the electric weight of each collection point, calculates line loss, loss on transmission and electricity volume, thereby calculate Network Loss Rate and multiple network loss result is compared to analysis.Basic management, method is carried out version management to the grid equipment detail parameters, guarantees that the equipment detail parameters that participates in calculating is all up-to-date.Analysis management, the line loss rate of the real-time monitoring circuit of method, and reported to the police to line loss rate is out-of-limit.
In the present invention, the root mean square calculation method in described line loss calculating is to carry out online computational analysis every day, can utilize the result of calculation of every day to carry out monthly or annual statistical analysis; Load measurement can carry out once to every day in normalization simultaneously, and utilizes the result of calculation of load measurement every day to carry out monthly or annual statistical analysis; Final generative theory line loss report and load measurement report.Wherein the calculating of root mean square theory wire loss and load measurement calculate and can and formulate two kinds of modes of timer-triggered scheduler task and realize by artificial manual calculations.
Its specific embodiment party flow process is: after the method application, enter the line loss computing module, according to the difference of computational methods, check that respectively line loss result of calculation also can carry out the comprehensive comparative analysis of many algorithms and compare analysis according to network loss and Network Loss Rate that multiple line loss result calculates algorithms of different.Enter the load measurement module, can check the result of calculation of various computation models.When the grid equipment parameter in basic management is changed, can manually to theory wire loss and load measurement, be recalculated, finally be formed theory wire loss report and load measurement report.
Gatherer process below in conjunction with the data acquisition flow in Fig. 1 to basic data is described as follows:
1, whether first differentiate for manually from keyboard typing electrical network parameter, as resistance, reactance value.
If 2 "No" are from other existing electrical network parameter, as poured in batches the parameter of electrical network in the system of resistance, reactance value into.
If 3 "Yes" are from manually from keyboard typing electrical network parameter, as resistance, reactance value.
4, system is carried out searching of topological relation (that is: whether equipment and equipment room being linked together) automatically.
5,, from EMS (EMS), the voltage of equipment, the equivalent size of electric current, complete the full mesh topology search.
6, system is carried out data relatively (system is value, the numerical value in coulomb collection system, the equipment actual measured value of estimation automatically), and rejects bad data, generates available data.
7, after available data have been arranged, just for the system-computed platform, provide the basis of data analysis, can carry out the data analysis of 18 projects of 5 classifications and control line loss work.
Claims (3)
1. a line loss control system, it is characterized in that: system comprises data acquisition unit, processing and control element (PCE) and output display unit, wherein
Collecting unit: gather the basic data of calculating for line loss, basic data comprises device parameter information, device status data and measured data, Data of State Estimation and electric quantity data;
Processing and control element (PCE): receive the basic data that collecting unit gathers, and to load measurement, line loss, network loss etc. are carried out in line computation and interpretation of result;
Output display unit: accept calculating and the result data of processing and control element (PCE) and show.
2. line loss control system according to claim 1 is characterized in that:
Described device parameter information is selected manual typing or peripheral system access;
Described device status data and measured data are carried out the search of the whole network automated topology and are obtained in the EMS system;
Data of State Estimation and electric quantity data are provided by EMS system and electric weight system respectively;
Above-mentioned basic data is by the scheduler task timing extraction formulated and the flaw data are carried out to data correction.
3. line loss control system according to claim 1 is characterized in that:
Described load measurement comprises transformer capacity-load ratio, line load rate and voltage levvl;
Described line loss is calculated and is comprised employing mean square root method, power integral method enforcement state estimation and electric quantity acquisition;
Described network loss is calculated and is comprised critical point definition, network loss form, network loss curve and network loss tabulate statistics;
Described data analysis comprises on-line monitoring, line loss comparison, line loss statement analysis, load measurement report analysis.
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| CN201310493325.3A CN103501003A (en) | 2012-11-22 | 2013-10-18 | Line loss control system |
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| CN 201210478523 CN102969711A (en) | 2012-11-22 | 2012-11-22 | Line loss control system |
| CN201210478523.8 | 2012-11-22 | ||
| CN201310493325.3A CN103501003A (en) | 2012-11-22 | 2013-10-18 | Line loss control system |
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Cited By (2)
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| CN104332987A (en) * | 2014-09-12 | 2015-02-04 | 国家电网公司 | Power network element loss abnormity determination method |
| CN110210001A (en) * | 2019-05-14 | 2019-09-06 | 国电南瑞科技股份有限公司 | A kind of layering and zoning Network Loss Rate statistical method based on EMS system |
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| CN103532136A (en) * | 2013-10-16 | 2014-01-22 | 国网安徽省电力公司 | On-line computation and aid decision making system and on-line computation and aid decision making method for province-prefecture-country integrated network loss |
| CN103646356B (en) * | 2013-12-18 | 2016-10-12 | 国家电网公司 | The determination method of comprehensive network loss rate in the transregional power trade of a kind of extra-high-voltage alternating current |
| CN108009940A (en) * | 2017-11-10 | 2018-05-08 | 国网浙江省电力公司电力科学研究院 | Same period line loss exception analysis method and system based on Tableau |
| CN110867861B (en) * | 2019-12-04 | 2021-03-19 | 广西大学 | Method for accurately delimiting theoretical line loss of power distribution network |
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| CN102969711A (en) | 2013-03-13 |
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Application publication date: 20140108 |