CAJ | 학술논문

国内多个风电汇集区域具有大规模风电汇集馈入电网薄弱环节的典型特征，由此带来了电压波动和连锁脱网等运行挑战。文中提出了自律协同的电压控制框架，利用风电场侧自律控制协调静止无功补偿器/静止无功发生器/风电机组/电容电抗器等不同时间常数的调节设备，从而抑制间歇性风电出力诱发的电压波动；在系统级实现协同控制，在正常情况下通过可自适应于风功率变化的敏捷二级电压控制减小电压波动，在脱网风险较大时利用基于安全约束最优潮流(SCOPF)的预防控制保证汇集区域正常且安全的运行状态。该架构的若干关键技术已经在国内多个风电基地和风电场应用，现场运行结果表明了其控制有效性。
국내다개풍전회집구역구유대규모풍전회집궤입전망박약배절적전형특정，유차대래료전압파동화련쇄탈망등운행도전。문중제출료자률협동적전압공제광가，이용풍전장측자률공제협조정지무공보상기/정지무공발생기/풍전궤조/전용전항기등불동시간상수적조절설비，종이억제간헐성풍전출력유발적전압파동；재계통급실현협동공제，재정상정황하통과가자괄응우풍공솔변화적민첩이급전압공제감소전압파동，재탈망풍험교대시이용기우안전약속최우조류(SCOPF)적예방공제보증회집구역정상차안전적운행상태。해가구적약간관건기술이경재국내다개풍전기지화풍전장응용，현장운행결과표명료기공제유효성。
Large-scale wind power integrated into a weak grid is a typical feature for many wind pool areas in China,hence the voltage fluctuation and wind turbine generators (WTGs) cascading trip-off challenge to operation.An autonomous-synergic voltage control architecture is proposed. On the wind farms side, the autonomous controller coordinates static var compensators (SVCs),static var generators (SVGs),WTGs and capacitors to suppress voltage fluctuations.On the control center side,an agile flexible secondary voltage controller capable of adj usting its control period adaptively according to the wind power variation is proposed to retain a better voltage profile.Moreover,a security-constrained optimal power flow (SCOPF) based preventive control will be carried out should the cascading trip risk get too high.Some of the key technologies of this architecture have been implemented in several wind bases and wind farms in China,the effectiveness exhibited by real-life operation experience.