Power grid voltage optimization regulation and control method

Abstract

The invention discloses a power grid voltage optimization regulation and control method. The method comprises the steps of collecting distribution information, load information and historical voltagedata of a transformer substation; establishing a power grid topological relation structure according to the distribution information; analyzing historical reasons of voltage disqualification accordingto the historical data of the voltage; combining the historical reasons of disqualification and the topological relation structure to construct a power grid load flow calculation analysis model, andanalyzing the reasons of voltage disqualification; and establishing a voltage regulation and control cooperation mechanism of each transformer substation according to the analysis reasons so as to automatically allocate a voltage target adjustment interval of each transformer substation, and outputting a voltage analysis report. By constructing the power grid load flow calculation and analysis model, reasons for voltage disqualification can be automatically analyzed, an analysis report can be automatically formed, a target of a solution strategy can be automatically given, and a watch keeper implements voltage regulation according to the given solution strategy so as to avoid the situation that the voltage qualification rate exceeds the standard due to technical level limitation.

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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