Method for dynamically checking appointed area external network equivalent models in electric power systems

A technology of power system and equivalent model, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as verification of equivalent model of regional external networks, and achieve the effect of shortening the process of iterative optimization

Active Publication Date: 2018-11-16
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

At present, the Guangdong Power Grid Dispatch Control Center has an online generation system for the equivalent model of the regional external network, but the system currently only provides the function of issuing the regional equivalent model, and does not have the function of verifying the generated regional external network equivalent model

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  • Method for dynamically checking appointed area external network equivalent models in electric power systems

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Embodiment Construction

[0016] The dynamic verification method of the external network equivalent model in the designated area in the power system proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:

[0017] (1) Establish a regional extranet equivalent database, obtain the model data information of the current power system from the power system and store it in the regional extranet equivalent database. The model data information of the power system includes: power system topology, power The measured data of system equipment impedance parameters, power system branch power flow, power generation load flow and bus node voltage are used to perform state estimation calculation and power flow calculation on the power system model, and save the power system model section after calculation convergence in the regional extranet In the equivalent database; configure the border configuration of the designated area in the equivalent database of the region...

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Abstract

The invention relates to a method for dynamically checking appointed area external network equivalent models in electric power systems, and belongs to the technical field of electric power system scheduling automation. The method comprises the following steps of: firstly obtaining the current electric power system model, and splicing the electric power system model with an appointed area externalnetwork equivalent model according to a boundary configuration of an appointed area; periodically obtaining real-time tidal current data of the an electric power system, updating a spliced model section of the appointed area and adding a time mark to carry out storage; periodically monitoring the change of a boundary line of the appointed area, when the line changes, obtaining the spliced model section of the appointed area at the closest moment, simulating the change of the boundary line, calculating tidal current and comparing the tidal current with the real-time tidal current data of the electric power system so as to complete dynamic check of the appointed area external network equivalent model. According to the method, the check of area external network equivalent models is completedin power grids of superior scheduling areas, so that the flow of iteratively optimizing the appointed area external network equivalent models is shortened.

Description

technical field [0001] The invention relates to a dynamic verification method of an external network equivalent model in a designated area in a power system, and belongs to the technical field of power system scheduling automation. Background technique [0002] The power grid is composed of multiple interconnected regions, and each region is independent in dispatching and controlling the power grid. How to ensure that the grid dispatching centers at all levels independently analyze and calculate the power grids in their jurisdictions is correct, which directly affects the correctness of grid dispatching decisions. In order to improve the accuracy of the independent calculation of the regional power grid's own grid model, it is necessary to perform equivalent processing on the external system. At present, the dispatching control center of Guangdong Power Grid already has an online generation system of the equivalent model of the regional extranet, but the system currently on...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06Q10/06G06F17/30
CPCG06Q10/06G06Q50/06
Inventor 李世明王彬林玥廷郭文鑫王鹏汤磊崔波迟鹏程
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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