A method for optimal regulation of grid voltage

Abstract

The invention discloses a method for optimizing and controlling the voltage of a power grid, which includes collecting distribution information, load information and historical data of voltage of substations; establishing a topological relationship structure of a power grid according to the distribution information; analyzing unqualified voltages according to the historical data of voltage Historical reasons; combine the unqualified historical reasons and the topological relationship structure to construct a grid power flow calculation and analysis model, and analyze the reasons for the unqualified voltage; establish a voltage regulation and coordination mechanism for each substation according to the analysis reasons to automatically distribute the voltage of each substation Target adjustment interval, and output voltage analysis report. By building a power grid power flow calculation and analysis model, the model can automatically analyze the cause of voltage failure, automatically form an analysis report, and automatically give the goal of the solution strategy. The on-duty officer implements voltage regulation according to the solution strategy given to avoid the voltage qualification rate caused by technical level restrictions. Exceeding the situation.

Description

technical field [0001] The invention relates to the technical field of power grid voltage regulation, in particular to a method for optimal regulation and control of power grid voltage. Background technique [0002] In recent years, the power grid has generally adopted technical measures such as adjusting transformer taps, switching capacitors, and reactors to adjust the grid voltage. However, since the above-mentioned technical measures use a certain fixed interval as the voltage adjustment interval, and the voltage adjustment of each substation is carried out independently, a certain substation will no longer participate in the adjustment after meeting its own voltage requirements, and there is a lack of coordination and linkage among the substations. Therefore, some substations often fail to meet the voltage requirements after fully adopting the voltage adjustment measures of the station. [0003] In the existing research, the minimum network loss of the power grid is us...

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Problems solved by technology

However, since the above-mentioned technical measures use a certain fixed interval as the voltage adjustment interval, and the voltage adjustment of each substation is carried out independently, a certain substation will no longer participate in the adjustment after meeting its own voltage requirements, and there is a lack of coordination and linkage between the substations. Therefore, some substations often fail to meet the voltage requirements after fully taking the voltage adjustment measures of the station

[0003] In the existing research, the minimum network loss of the power grid is usually taken as the goal of voltage optimization, that is, the objective function and constraint conditions are established according to the power grid parameters, and then intelligent algorithms such as particle swarm optimization and particle swarm optimization are used to solve the problem. However, this method often results in It is a single value, which is not convenient to be used as the voltage target regulation value of the substation

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