CN103412862A - Dynamic bus power unbalance rate obtaining method - Google Patents
Dynamic bus power unbalance rate obtaining method Download PDFInfo
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- CN103412862A CN103412862A CN2013100833171A CN201310083317A CN103412862A CN 103412862 A CN103412862 A CN 103412862A CN 2013100833171 A CN2013100833171 A CN 2013100833171A CN 201310083317 A CN201310083317 A CN 201310083317A CN 103412862 A CN103412862 A CN 103412862A
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Abstract
The invention discloses a dynamic bus power unbalance rate obtaining method, and belongs to the field of electrical power system informatization and automation. According to the dynamic bus power unbalance rate obtaining method, the load input power and the output power of equipment of a power grid bus can be dynamically obtained, the power unbalance rate is calculated, and dynamic display and real-time alarming are carried out. By means of the dynamic bus power unbalance rate obtaining method, a dispatching person can operate experience strategies according to data, mutation data or error data caused by system exceptions are filtered, and alarming can be carried out on the system exceptions, and timely and reliable essential data can be provided for statistic analysis.
Description
Technical field
The invention belongs to electric power information and automatic field, particularly relate to the dynamic acquisition of operation of power networks data, the dynamic calculation aspect of bus unbalanced power rate.
Background technology
Nowadays, many enterprises all regard data as valuable wealth, the numerous and confused various intelligent means of research and utilization are found the information of wherein hiding, existing “Di county is integrated " supporting system technology has progressively been realized regulation and control integrated ,Di county integral application function, is the of paramount importance operation control system of each electric company.Along with improving constantly of electrical network lean management expectancy, in the face of the real-time production information of increasing magnanimity electrical network, system has adopted time series databases storage associated change sampled data, the complete operation of power networks track of having preserved.But how to utilize efficiently these data, become the matter of utmost importance faced.
For realizing comprehensive supervision and the analysis to the operation of power networks state, carry out power grid security, economy and planning statistics, check and research, the departmental staffs such as regulation and control, operation need pre-service and the verifying function of data, in time by bus, main transformer, line power balance and data run business strategy, the sudden change that filtering system causes extremely or misdata, and can be to extremely reminding, for statistical study provides more reliable basic data.The mode of computation of Period is adopted in the calculating of traditional bus unbalanced power rate usually, and regular each apparatus of load input of bus, output power from obtaining this moment database, calculated the unbalanced power rate of each bus in this moment thus every 5 minutes.The result that the method is calculated can not reflect the operation conditions of electrical network in real time, if of short duration traffic overload and unbalance factor deviation have occurred in computation period, this situation of reflection that the method can't be correct, can affect to power grid security.
Therefore the regulation and control center is in the urgent need to tissue research and development operation of power networks Data Statistics Inquiry Through integrated application module, set up independently time series real-time data base panorama and preserve all details of operation of power networks, by real-time change, sample, record all details that whole operation of power networks changes, realize panorama overall process operation of power networks historical record, history/accident inversion, the functions such as accurate electrical network fractograph analysis, application function and the level of Shi Di county integral system are improved significantly, and the organization development interface is good on this Basis of Database, data mining platform simple to operate and Data Statistics Inquiry Through instrument, directly offer the regulation and control central interior, send out and build, give birth to skill, the all departments such as one lineman district, press demand query-relevant data separately, calculate in real time bus unbalanced power rate, in time unbalance factor is occurred to the circuit of deviation and transformer station control and investigate, improve the management level of safe operation of electric network and electric power enterprise, minimizing personnel workload, increase work efficiency.
Summary of the invention
The not real-time and inaccurate problem for computation of Period bus unbalanced power rate traditional in prior art, the present invention proposes a kind of dynamic bus unbalanced power rate acquisition methods, the method can each apparatus of load input of Dynamic Acquisition electrical network bus, output power and is calculated the unbalanced power rate.Dynamic implication is exactly that all changes value all can be stored in time series databases and by the applications real time access, for calculating in real time the unbalanced power rate of the equipment such as bus, main transformer in time when each apparatus of load input of bus, output power change.By the present invention, the dispatcher can be according to the data run business strategy, the sudden change that filtering system causes extremely or misdata, and can be to extremely reminding, for statistical study provides more timely and reliable basic data.
Specifically, the present invention takes following technical scheme to realize, comprises the following steps:
1) in power network dispatching system, dispose time series databases, dynamic acquisition store electricity network operation real time data, described operation of power networks real time data comprise real-time input, the output power data of each apparatus of load of bus;
2) in time series databases, set up calculation level, set up and the real-time input of each apparatus of load of bus, the corresponding relation of output power data;
3) when real-time input, the output power data of certain or a plurality of bus equipment loads change, by the mode of Event triggered, calculate in real time the bus unbalanced power rate of this bus, the computing formula of described bus unbalanced power rate is:
The real-time power input * 100% of bus unbalanced power rate=(the real-time output power of the real-time power input of each apparatus of load of ∑ bus-each apparatus of load of ∑ bus)/each apparatus of load of ∑ bus
4) service time, the sequence library configuration instrument was set up form and column pel, with the calculation level in time series databases, bind, when the numerical value of calculation level changes, the column pel on configuration instrument can be along with the variation of numerical value Dynamic Display, and carry out Real-time Alarm.
Beneficial effect of the present invention is as follows: the time series databases that the present invention utilizes ground county integral system independently to set up keeps high-precision variation to adopt data, panorama is preserved all details of operation of power networks, and tissue is researched and developed operation of power networks Data Statistics Inquiry Through integrated application module on the basis of these data, the Data Statistics Inquiry Through instrument that development interface is good, simple to operate, directly offer the regulation and control central interior, send out and build, give birth to all departments such as skill, a lineman district, press demand query-relevant data separately, to improve the management level of electric power enterprise.By the dynamic bus unbalance factor computing method in technique scheme, effectively carry out bus Real-Time Monitoring circuit and carry electric situation, confirm in time whether the electric weight conveying is normal, facilitates the dispatching of power netwoks personnel diagnose efficiently and deal with problems.
The accompanying drawing explanation
Accompanying drawing 1 is the process flow diagram of the inventive method.
Accompanying drawing 2 is Nanjing electrical network bus unbalance factor exploded views.
Accompanying drawing 3 is that time series databases calculates measuring point formula configuration interface figure.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention.
Concrete steps of the present invention are as follows:
1) in power network dispatching system, dispose time series databases, dynamic acquisition store electricity network operation real time data, described operation of power networks real time data comprise real-time input, the output power data of each apparatus of load of bus;
2) in time series databases, set up calculation level, set up and the real-time input of each apparatus of load of bus, the corresponding relation of output power data;
3) when real-time input, the output power data of certain or a plurality of bus equipment loads change, by the mode of Event triggered, calculate in real time the bus unbalanced power rate of this bus, the computing formula of described bus unbalanced power rate is:
The real-time power input * 100% of bus unbalanced power rate=(the real-time output power of the real-time power input of each apparatus of load of ∑ bus-each apparatus of load of ∑ bus)/each apparatus of load of ∑ bus
4) service time, the sequence library configuration instrument was set up form and column pel, with the calculation level in time series databases, bind, when the numerical value of calculation level changes, the column pel on configuration instrument can be along with the variation of numerical value Dynamic Display, and carry out Real-time Alarm.
Each apparatus of load of bus need to be considered the Transformer Winding table, exchange line segment endpoint table, load meter, switch tool table etc., and these equipment can represent the basic load of bus usually, can be used to calculating the unbalance factor of bus power.
Real-time data base is as the become more meticulous main memory carrier of historical data of ground county integrated dispatching system, its data acquisition and the realization that monitors (SCADA) system of control and in the past different, mainly aspect two: the one, in the real-time access time sequence library of data variation information, thereby realize based on the real-time sampling changed, be that data are in case variation is just stored in time series databases, than traditional periodic samples (minute level, history samples), can more truly accurately intactly record the operation of power networks track.On the other hand, based on the real-time sampling technology changed, can realize continuously history inversion and the accident inversion of (non-frame mode).
Different from traditional computation of Period bus unbalanced power rate, dynamically bus unbalanced power rate is when the input of each apparatus of load of bus or output power change, the unbalance factor that calculating immediately makes new advances, thus reach the function of real-time calculating and early warning.The realization of this function is mainly based on the deployment of ground county integral system time series databases, owing to processing efficiently and storage capacity, when the input and output power of bus changes, time series databases can record changing value in time, calculate real-time bus unbalanced power rate, and access interface is provided, guarantee applications Real-time Obtaining information.
Be different from traditional relevant database, time series databases can be accurate to the variation sampling of data, therefore the bus unbalance factor in configuration picture is based on the result that time series databases sampling with high precision data are calculated, and can reflect in real time the actual working state of current time bus; Simultaneously, the reservation that the calculating measuring point of time series databases is complete the unbalance factor of historical any time of all buses, configuration instrument can provide the trend analysis function for the user, to carry out the historical analysis of data.
When calculating gained bus unbalanced power rate and being not 0%, illustrate that electric weight is lossy in transmitting procedure, when meritorious unbalance factor surpasses the amount of setting, should give in time and alarm and further analysis.
The example that below applies to the Nanjing power network dispatching system with the inventive method is further described this method.
When in the power network dispatching system of Nanjing, using this method, system will calculate all input-output power summations of bus under each electric pressure by topological structure of electric, and service time the calculating measuring point (as shown in Figure 3) that configures in sequence library, for this bus, calculate in real time the unbalance factor of current time, and will be by the corresponding calculation level of time series databases configuration software binding, Dynamic Display is (as shown in Figure 2) in configuration picture.
Particularly, accompanying drawing 2 has been showed Nanjing electrical network part transformer station and the unbalance factor in a certain moment of power plant's bus, the numerical value of coloured histogram representative is the unbalanced power rate of corresponding bus at current time, total greenish-yellow red three kinds of colors, mean respectively normal, alarm, three kinds of bus running statuses of the highest alarm, corresponding different states.When this numerical value is in normal range, the unbalance factor histogram will show with green, and concrete numerical value is simultaneously displayed on the right side of histogram; And when the unbalance factor overrun, but the highest the prescribing a time limit that the system that do not reach arranges, histogram will show with yellow; When unbalance factor surpasses the highest the prescribing a time limit that system arranges, histogram will now need this circuit is taked to urgent treatment measures with red display, finds as early as possible the problem place, to reduce the loss, selects different processing modes by the dispatcher.By the real-time monitoring of this picture to electrical network bus running status, guarantee the normal operation of electrical network.
3, accompanying drawing provides time series databases and calculates measuring point formula configuration interface.This picture exhibition time series databases calculate the concrete formula configuration interface of measuring point, mainly comprise the calculation services list, calculate the measuring point list, calculate the measuring point information display, the contents such as account form configuration and computing formula editor.Wherein account form configuration can have the cycle trigger and two kinds of modes of Event triggered optional, in the computation process of dynamic bus unbalanced power rate, the account form of calculation level need be configured to Event triggered.
Be different from traditional relevant database, time series databases can be accurate to the variation sampling of data, therefore the bus unbalance factor in configuration picture is based on the result that time series databases sampling with high precision data are calculated, and can reflect in real time the actual working state of current time bus; Simultaneously, the reservation that the calculating measuring point of time series databases is complete the unbalance factor of historical any time of all buses, configuration instrument can provide the trend analysis function for the user, to carry out the historical analysis of data.
Although the present invention is with preferred embodiment openly as above, embodiment be not limit of the present invention.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection domain.Therefore protection scope of the present invention should be take the application's the content that claim was defined and is standard.
Claims (1)
1. a dynamic bus unbalanced power rate acquisition methods, is characterized in that, comprises the following steps:
1) in power network dispatching system, dispose time series databases, dynamic acquisition store electricity network operation real time data, described operation of power networks real time data comprise real-time input, the output power data of each apparatus of load of bus;
2) in time series databases, set up calculation level, set up and the real-time input of each apparatus of load of bus, the corresponding relation of output power data;
3) when real-time input, the output power data of certain or a plurality of bus equipment loads change, by the mode of Event triggered, calculate in real time the bus unbalanced power rate of this bus, the computing formula of described bus unbalanced power rate is:
The real-time power input * 100% of bus unbalanced power rate=(the real-time output power of the real-time power input of each apparatus of load of ∑ bus-each apparatus of load of ∑ bus)/each apparatus of load of ∑ bus
4) service time, the sequence library configuration instrument was set up form and column pel, with the calculation level in time series databases, bind, when the numerical value of calculation level changes, the column pel on configuration instrument can be along with the variation of numerical value Dynamic Display, and carry out Real-time Alarm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748954A (en) * | 2017-10-17 | 2018-03-02 | 国网江苏省电力公司盐城供电公司 | A kind of transformer station's balancing monitor and control system |
| CN107919728A (en) * | 2017-11-15 | 2018-04-17 | 国网江苏省电力有限公司 | Substation's electric energy balance online awareness monitoring method and system based on Scada Yu Electric Energy Acquisition System data fusion |
| CN108985655A (en) * | 2018-08-06 | 2018-12-11 | 国网江西省电力有限公司上饶供电分公司 | resource flexibility evaluation method and device |
| CN115144689A (en) * | 2022-06-15 | 2022-10-04 | 上海博般数据技术有限公司 | Electric quantity balance calculation method and system in power grid and electronic equipment |
| CN116796146A (en) * | 2023-05-24 | 2023-09-22 | 国家电网有限公司华东分部 | Electric quantity balancing method, device, equipment and storage medium of pumping and accumulating power plant |
| CN116796146B (en) * | 2023-05-24 | 2024-06-07 | 国家电网有限公司华东分部 | Electric quantity balancing method, device, equipment and storage medium of pumping and accumulating power plant |
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| CN2657124Y (en) * | 2003-02-16 | 2004-11-17 | 刘改成 | Automatic metering monitor device for electric network |
| CN1665088A (en) * | 2004-03-05 | 2005-09-07 | 株式会社Kd动力 | Digital diagrammatic view switch apparatus system |
| CN101750561A (en) * | 2010-01-08 | 2010-06-23 | 江苏大学 | Electrical energy quality monitoring and evaluating system |
| CN102629340A (en) * | 2012-03-06 | 2012-08-08 | 常州节安得能源科技有限公司 | Energy efficiency artificial intelligence analysis system |
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| CN2126424U (en) * | 1992-04-27 | 1992-12-30 | 江西省电力试验研究所 | Bus-bar electricity unbalance monitoring instrument |
| CN2657124Y (en) * | 2003-02-16 | 2004-11-17 | 刘改成 | Automatic metering monitor device for electric network |
| CN1665088A (en) * | 2004-03-05 | 2005-09-07 | 株式会社Kd动力 | Digital diagrammatic view switch apparatus system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748954A (en) * | 2017-10-17 | 2018-03-02 | 国网江苏省电力公司盐城供电公司 | A kind of transformer station's balancing monitor and control system |
| CN107919728A (en) * | 2017-11-15 | 2018-04-17 | 国网江苏省电力有限公司 | Substation's electric energy balance online awareness monitoring method and system based on Scada Yu Electric Energy Acquisition System data fusion |
| CN108985655A (en) * | 2018-08-06 | 2018-12-11 | 国网江西省电力有限公司上饶供电分公司 | resource flexibility evaluation method and device |
| CN115144689A (en) * | 2022-06-15 | 2022-10-04 | 上海博般数据技术有限公司 | Electric quantity balance calculation method and system in power grid and electronic equipment |
| CN115144689B (en) * | 2022-06-15 | 2023-09-26 | 上海博般数据技术有限公司 | Method and system for calculating electric quantity balance in power grid and electronic equipment |
| CN116796146A (en) * | 2023-05-24 | 2023-09-22 | 国家电网有限公司华东分部 | Electric quantity balancing method, device, equipment and storage medium of pumping and accumulating power plant |
| CN116796146B (en) * | 2023-05-24 | 2024-06-07 | 国家电网有限公司华东分部 | Electric quantity balancing method, device, equipment and storage medium of pumping and accumulating power plant |
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Application publication date: 20131127 |