基于发电机运行实际的电力系统日前动态无功优化研究
摘要：为了解决日前动态无功优化中发电机安全运行极限以及控制设备动作次数约束取值的电力系统调度实际问题，根据发电机运行的极限输出范围，把发电机运行的区域划分为3个区，并建立分段PQ数学模型，将日前全天负荷分为24个时段，并对有载调压变压器和并联电容器组联动次数加以限制，建立完整的非线性混合整数动态无功优化模型。仿真结果表明：尤其在发电机进相运行时，所提出数学模型能有效调节发电机的出力，符合机组运行的实际状况；提高控制设备动作次数可减少全网有功功率损耗，但同时频繁的操作会大大提高设备的故障概率，有必要在网损可信接受的范围内寻找合适的联动次数约束值，节约电网实际运行的综合成本，保障电网经济、安全运行。
Abstract:In order to solve the practical problem of 24-hours dynamic reactive power optimization in power system dispatching, this paper divided generator's operation into three regions in PQ mathematical model, according to the limit output range of generator's operation. Moreover, the action times of discrete control equipment were taken as global inequality constraints, and a complete 24-hours non-linear mixed integer dynamic reactive power optimization mathematical model was established. The simulation results show that the mathematical model in this paper can adjust the output of generators according to the actual situation effectively when the generators are in phase-leading operation. In addition, increasing the number of control equipment's action can reduce the loss of active power in the whole network, but at the same time, the frequent operation will greatly increase the probability of failure of equipment. It is necessary for us to find the appropriate constraints of the action number within the range of reliable acceptance of network losses, so as to save the comprehensive cost of the actual power grid operation.
标题：基于发电机运行实际的电力系统日前动态无功优化研究
title:Research on Day Ahead Dynamic Reactive Power Optimization Based on Generator Operation
作者：陆彬, 高山, 李德胜
authors:Bin LU, Shan GAO, Desheng LI
关键词：动态无功优化,发电机安全运行极限,内点法,电力系统调度,
keywords:dynamic reactive power optimization,generator safe operating limit,interior point method,power system dispatching,
发表日期：2021-02-28
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