A local voltage and reactive power control strategy setting method for intermittent distributed power generation

Abstract

An intermittent distributed generation in-situ voltage reactive control strategy setting method comprises the following steps: according to a selected power distribution system, inputting the parameters, load level and network topology connection relationship of lines, the operation voltage constraint and branch current limit of the system, the type, access position, capacity and parameters of an intermittent distributed generation, the predicted operation characteristic curves of the load and the intermittent distributed generation in the operation optimization period, and the initial values of the reference voltage and reference power of the system; building an active distribution network intermittent distributed generation in-situ voltage reactive control strategy setting model; linearly converting a nonlinear objective function and constraint conditions in the model to transform the model into a mixed-integer linear programming model; using a mixed-integer linear programming solving tool to solve the mixed-integer linear programming model; and outputting the solution. According to the invention, the randomness and volatility of the load and the intermittent distributed generation are fully considered, the model is solved using a mixed-integer linear programming method, and thus, an intermittent distributed generation in-situ voltage reactive control strategy is obtained.

Description

technical field [0001] The invention relates to a local control strategy of a distributed power supply. In particular, it relates to an intermittent distributed power generation local voltage and reactive power control strategy setting method. Background technique [0002] The high attention to energy and the environment makes the development of distribution networks face new pressures and challenges, and these pressures and challenges are also important opportunities to promote the development of traditional distribution networks to active distribution networks. In recent years, a large number of intermittent distributed generation (Distributed Generation, DG) including photovoltaic (Photovoltaic, PV) and wind turbines have been connected to the distribution network. As the penetration rate of intermittent distributed power continues to increase, problems such as reverse power flow, reactive power and voltage control are becoming more and more serious. In particular, the ...

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Problems solved by technology

The mathematics of this model is essentially a mixed integer nonlinear programming problem, which brings great challenges to the calculation and solution

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