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A Sensitivity Calculation Method Based on Load Rate Classification Statistics

A calculation method and classification statistics technology, applied in the field of sensitivity calculation, can solve the problems of complex calculation method, low accuracy and usability, and failure to meet the requirements of use, and achieve the effect of simplifying the calculation method and improving accuracy and usability

Active Publication Date: 2019-05-17
DONGFANG ELECTRONICS
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  • Application Information

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Problems solved by technology

[0003] The sensitivity calculation method in the prior art needs to calculate the power flow, the calculation method is complicated, the accuracy and usability are low, and it cannot meet the use requirements

Method used

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  • A Sensitivity Calculation Method Based on Load Rate Classification Statistics
  • A Sensitivity Calculation Method Based on Load Rate Classification Statistics
  • A Sensitivity Calculation Method Based on Load Rate Classification Statistics

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Experimental program
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Embodiment Construction

[0030] The technical scheme of the present invention is described in detail below:

[0031] A sensitivity calculation method based on load rate classification statistics is characterized in that it comprises the following steps:

[0032] (1) Regularly record the real-time data of voltage, active power and reactive power of the substation and store them in the historical database:

[0033] (1.1) When it is detected that the substation has an AVC control strategy issued, the substation startup flag is set;

[0034] (1.2) When the recording program detects the start-up sign of the substation, record the current time segment and the initial substation voltage, active and reactive real-time data, and record the unified number, the serial number in the number is 0;

[0035] (1.3) Record the real-time data of voltage, active power and reactive power of the substation every 5 seconds, and use the unified number in step (1.2) to record. The serial number in the number starts from the ...

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Abstract

The invention discloses a sensitivity calculation method based on load rate classification statistics. The method comprises steps that (1), the real-time voltage, active and reactive data of a transformer substation is recorded regularly and is stored into a historical database; (2), the data of the historical database is segmented, the data of each segment is pre-processed to reserve the effective data, and an original sensitivity value of each segment is solved according to the effective data; and (3), the original sensitivity value is updated in real time according to the new equipment adjustment data. The method is advantaged in that the sensitivity values of different load rate segments are solved according to the historical data, the sensitivity values are continuously corrected through utilizing the real-time data, so flow calculation is not needed, the sensitivity value value calculation method is simplified, and accuracy and availability are improved.

Description

technical field [0001] The invention relates to a sensitivity calculation method, which belongs to the field of power system automation. Background technique [0002] With the doubling of the power grid scale and the rapid development of UHV transmission technology, the traditional dispatching mode can no longer meet the development requirements of building a strong smart grid. Since the automatic voltage control system (AVC system) can realize the comprehensive optimal control of voltage and reactive power, improve the stability of grid voltage and greatly reduce the labor intensity of dispatchers, it has become popular in recent years and has become an indispensable part of the construction of smart grid. In the AVC system and the automatic load shedding system, the sensitivity values ​​of voltage active power and voltage reactive power are required. [0003] The sensitivity calculation method in the prior art needs to calculate the power flow, the calculation method is c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16Z99/00
CPCG06Q50/06H02J3/16Y02E40/30Y04S10/50
Inventor 李绥荣徐艳高贞彥田志强潘凯岩赵勇邓颖奇
Owner DONGFANG ELECTRONICS