CAJ | 학술논문

针对大规模风电机组连续脱网事故，在简要分析风电基地故障演化过程的基础上，引入风险概念，提出了一种综合考虑无功补偿投资及运行成本、有功备用成本和切负荷成本的风电基地无功优化配置方法。该方法考虑系统中可调节的备用、可中断负荷等资源的协调，以事故过程可能产生的运行风险最小为优化目标，通过遗传算法求解得到风电基地无功优化配置方案。利用国内某实际电网数据，从经济型、并网点稳态电压水平和暂态电压特性3个方面，对比了所提方法与传统方法，结果表明所提方法能够有效提高系统运行经济性。
침대대규모풍전궤조련속탈망사고，재간요분석풍전기지고장연화과정적기출상，인입풍험개념，제출료일충종합고필무공보상투자급운행성본、유공비용성본화절부하성본적풍전기지무공우화배치방법。해방법고필계통중가조절적비용、가중단부하등자원적협조，이사고과정가능산생적운행풍험최소위우화목표，통과유전산법구해득도풍전기지무공우화배치방안。이용국내모실제전망수거，종경제형、병망점은태전압수평화잠태전압특성3개방면，대비료소제방법여전통방법，결과표명소제방법능구유효제고계통운행경제성。
Due to the irrationality in configuration and control of reactive power in large-scale wind power bases, in recent years many accidents of large-scale grid-disconnection of wind power generation units continually occur home and abroad. In allusion to it, on the basis of analyzing the evolutionary process of fault occurred in wind power base in brief and leading in the concept of risk, an approach to configure reactive power in wind power based, in which the investment for reactive power compensation devices and their operational cost, the cost for active power reserve and the cost for load shedding are synthetically considered, is proposed. In the proposed approach, the coordination of resources such as adjustable reserve and interruptible load are considered, and the minimum risk possibly caused by fault process is taken as the optimization objective, utilizing genetic algorithm the reactive power in wind power base is attained and then the optimized reactive power configuration scheme can be implemented. Finally, based on the data from a certain power grid in China, the proposed approach and are compared with traditional method in three aspect, namely economy, steady state voltage level at grid-connected point and transient voltage characteristics, and comparison results show that using the proposed approach the economy of power grid operation can be effectively improved.