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Power grid loss computation method in statistics period

A calculation method and technology of power grid loss, applied in the direction of calculation, instrumentation, data processing applications, etc., can solve the problems of not considering the trend change of network loss and the error of theoretical network loss results, so as to improve the level of energy efficiency management and reduce the effect of loss Effect

Inactive Publication Date: 2017-05-31
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +3
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Problems solved by technology

However, this method does not consider the network loss trend changes within each cycle, and the obtained theoretical network loss results have large errors

Method used

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  • Power grid loss computation method in statistics period
  • Power grid loss computation method in statistics period
  • Power grid loss computation method in statistics period

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] Specifically, at present, SCADA data acquisition system and EMS data analysis system are generally used in my country's electric power system. Through the processes of data acquisition, state estimation and power flow calculation, the actual measurement data of the system power flow section with a step length of 5 minutes can be obtained, and further through the network loss calculation The m original network loss data in the statistical period can be obtained.

[0035] figure 2 It is the flow chart of the calculation method of power grid loss during the statistical period

[0036] The steps to calculate the network loss are as follows:

[0037] 1. Form an ...

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Abstract

The invention discloses a power grid loss computation method in a statistics period. The method mainly comprises the following steps: arranging data acquired from an EMS system according to the time so as to form a grid loss data order arrays; segmenting the grid loss data according to time step-length on the basis of the grid loss actual data scale and feature; determining a fitting curve function type according to the grid loss data feature; computing coefficient matrixes by use of the least squares in turns so as to obtain grid loss curves the sections; integrating the time to obtain the grid loss amount of single section, and summarizing the total grid loss amount in the statistics period. By use of the computation method disclosed by the invention, the thought that the grid loss power value is unchanged in a sampling period in the prior art can be overcome, the numerical value trend change is considered, and the computation result precision is improved.

Description

technical field [0001] The present invention relates to the technical field of power grid loss evaluation and calculation, and in particular to a calculation method for power grid loss in a statistical period. Background technique [0002] The real-time monitoring and management automation technology of the power system continues to develop. At present, the power flow can be calculated every 5 minutes through the energy management system, and a series of discrete instantaneous values ​​of the power loss of the entire network can be obtained. The traditional network loss calculation method considers that the network loss power value is constant within a 5-min cycle, and the network loss amount in each cycle is the product of its network loss power value and cycle duration (5 min). The total amount of network loss in a long period of time can be obtained by adding the amount of network loss. However, this method does not consider the network loss trend change within each cycl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/063G06Q50/06
Inventor 田浩刘文颖王维洲李亚龙刘福潮梁安琪郑晶晶曾文伟杜培东郭鹏张建华蔡万通韩永军朱丹丹彭晶许春蕾禄启龙张雨薇王方雨郭红林吕思琦吕良姚春晓郭虎王贤张尧翔李宛齐
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)