A reactive planning method of power grid considering voltage response characteristics

Abstract

The invention discloses a reactive power planning method of a power grid considering voltage response characteristics, comprising: giving network parameters, load prediction value and power output plan in a planning time period, candidate access nodes of reactive power compensation equipment and maximum allowable installation capacity in the planning time period. A reactive power planning model ofthe power grid considering voltage response is constructed. The optimization model minimizes the sum of the investment cost of reactive power equipment and the cost of network loss during the planning period and includes constraints. The optimization model is solved through prediction-correction original dual nonlinear inner point method, sothe final reactive power optimization planning scheme isobtained. The invention can be used for the optimization decision of the reactive power resource allocation of the power network, which is beneficial to reducing the comprehensive loss of the power network and improving the voltage level of the power network. The voltage response characteristic of the system is considered in the reactive power optimization planning of the power network, so that the system operation reality can be more respected, the organic connection between the reactive power planning and the operation can be realized, and the accuracy of the reactive power planning investment of the power network can be improved.

Description

technical field [0001] The invention relates to the technical field of grid planning, in particular to a grid reactive power planning method considering voltage response characteristics. Background technique [0002] The purpose of optimal configuration of reactive power in the power grid is to improve the reactive power flow in the power grid, and to achieve the optimal allocation of reactive power resources in the power grid with the goal of minimizing the sum of investment costs of reactive power equipment and system network losses, so as to reduce network losses and improve voltage level. The load and reactive power compensation equipment in the system are voltage sensitive, that is, the voltage changes, the load power and reactive power compensation will change accordingly, and the power flow distribution of the power grid will also change accordingly. [0003] The current grid reactive power optimization planning method usually focuses on the mathematical means of rea...

AI Technical Summary

Problems solved by technology

Neglecting this point in reactive power optimization planning will inevitably affect the accuracy of reactive power resource allocation, causing the actual operating quality of the power grid to be lower than the expected level or redundant investment in reactive power resources, reducing the economics of power grid operation

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