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Power network element loss abnormity determination method

An abnormality judgment and power grid technology, which is applied in the judgment of whether the loss of power grid components is abnormal, the field of abnormal judgment of power grid component loss, can solve problems such as abnormal judgment of power grid component loss, and achieve the effects of avoiding management lag, high economy and practical value

Active Publication Date: 2015-02-04
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0005] In order to solve the problems existing in the abnormal judgment of the loss of the existing power grid components, the present invention provides a method for judging the abnormal loss of the power grid components, especially by comparing the actual measured daily theoretical line loss rate with the statistical line loss rate, and judging the power grid component loss according to the difference How to judge whether it is abnormal

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  • Power network element loss abnormity determination method

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Embodiment approach

[0062] It can be seen from the above examples that, in the first embodiment of the present invention, no matter whether the transformer load is normal, heavy load, or light load, this embodiment can well judge whether the loss of the transformer is abnormal, and it is not affected by the actual measurement of the transformer. load rate and average load rate. What needs to be pointed out here is that this embodiment is only an example of using a 110kV transformer. For transformers of other voltage levels and power supply lines under various voltage levels, this embodiment is applicable, and this embodiment is not specific to the present invention. limit.

[0063] Of course, since the determination of the loss abnormality threshold K in the aforementioned embodiment involves the cumulative statistical line loss rate of the selected power grid components in the past 3 consecutive years, for the newly constructed power system, or there is no past annual cumulative statistical line...

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Abstract

The invention provides a power network element loss abnormity determination method, for solving the problems existing in conventional power network element loss abnormity determination. The determination method comprises the following steps: selecting an actual measuring day to carry out a power network element line loss rate test; calculating a statistical line loss rate and a theoretical line loss rate of a power network element selected on the actual measuring day, and obtaining a difference between the statistical line loss rate and the theoretical line loss rate; and setting a power network element loss abnormity threshold K, when the absolute value of the difference between the statistical line loss rate and the theoretical line loss rate is smaller than K, determining that the loss of the selected power network element is normal, and otherwise, determining that the loss of the selected power network element is abnormal. According to the invention, a conventional determination mode according to line loss rate fluctuation conditions counted at the end of a month and empirical values is abandoned, the disadvantage of lagged management is avoided, the problem is effectively solved that power network element loss abnormities are conventionally determined based on the empirical values, which is not suitable for the requirement for line loss refinement management, and the method provided by the invention has quite high economic benefits and a quite high practical value.

Description

technical field [0001] The invention relates to the technical field of electric power systems, and relates to a method for judging abnormal loss of power grid components, in particular to a method for judging whether the power grid component loss is abnormal according to the magnitude of the difference by comparing the theoretical line loss rate of a representative day with the statistical line loss rate. [0002] Background technique [0003] Line loss is the lifeblood of a power supply company, reflecting the effectiveness of a company's technology, management and other aspects of work. In the analysis of statistical line loss, power supply enterprises are often affected by factors such as large fluctuations in line loss rate and many abnormal values ​​of line loss rate. Therefore, reasonable loss reduction measures cannot be proposed only by analyzing statistical line loss rate. Theoretical line loss calculation of the power grid is one of the important technical means a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F19/00
CPCG06Q50/06H02J3/00H02J3/003
Inventor 潘丽珠罗亚桥王风霞程石吴功高
Owner STATE GRID CORP OF CHINA