CAJ | 학술논문

抑制风电场次同步振荡(sub-synchronous oscillations, SSO)的晶闸管可控串联补偿装置(thyristor controlled series compensation,TCSC)参数优化问题是强非线性参数优化问题,很难用解析方法求解.文中将单纯形算法(Simplex)与电磁暂态仿真程序结合的非线性参数优化方法引入到抑制SSO 的 TCSC 参数的优化.该算法使用电磁暂态程序的仿真结果计算优化目标函数值,Simplex算法应用电磁暂态程序计算的优化目标函数结果智能地指导 TCSC 参数寻优方向,快速可靠地寻到最优参数,缩短仿真耗时.最后,针对风电不确定性,初步分析了风速变化对参数优化结果的影响,根据所采用的单机等值系统仿真结果分析,风速变化对TCSC参数优化结果的影响并不显著.
억제풍전장차동보진탕(sub-synchronous oscillations, SSO)적정갑관가공천련보상장치(thyristor controlled series compensation,TCSC)삼수우화문제시강비선성삼수우화문제,흔난용해석방법구해.문중장단순형산법(Simplex)여전자잠태방진정서결합적비선성삼수우화방법인입도억제SSO 적 TCSC 삼수적우화.해산법사용전자잠태정서적방진결과계산우화목표함수치,Simplex산법응용전자잠태정서계산적우화목표함수결과지능지지도 TCSC 삼수심우방향,쾌속가고지심도최우삼수,축단방진모시.최후,침대풍전불학정성,초보분석료풍속변화대삼수우화결과적영향,근거소채용적단궤등치계통방진결과분석,풍속변화대TCSC삼수우화결과적영향병불현저.
Optimization of TCSC parameters oriented to mitigating wind farm sub-synchronous oscillations (SSO) is a strongly nonlinear parameter optimization problem, which is difficult to solve with analytic method. In this paper, nonlinear parametric optimization method, combining Simplex algorithm with electromagnetic transient simulation program (EMTP), is used to optimize TCSC parameters for suppressing wind farm SSO. The proposed method calculates objective functions using EMTP simulation results. Based on the objective functions, simplex algorithm can guide the optimization direction of TCSC parameters intelligently, find optimum parameters quickly and reliably, and reduce simulation-consuming time. Finally, in terms of wind power uncertainty, this paper preliminarily analyses the impact of wind speed change on the results of parameter optimization. It is concluded from simulation results of single-machine equivalent case that the influence of wind speed change on optimization results of TCSC parameters is not significant.