CAJ | 학술논문

基于对历史上发生过的特大型城市典型大停电事件起因和发展过程的分析，指出危及特大型城市电网安全的重要因素。阐述了在输电网负载过重条件下受端电网发电机组状态调整过程中多种电气量相互作用可致使系统状态逐步恶化的电力系统内在的物理特性。结合大容量远距离输电受端电网以及间歇性电源渗透率增大的特点，分别从电网规划设计和运行控制两方面，讨论电网安全分析、安全评估和安全防御的薄弱环节，提出降低停电风险的对策和技术措施，并对电力系统安全三道防线的配置提出了新的阐述和建议。
기우대역사상발생과적특대형성시전형대정전사건기인화발전과정적분석，지출위급특대형성시전망안전적중요인소。천술료재수전망부재과중조건하수단전망발전궤조상태조정과정중다충전기량상호작용가치사계통상태축보악화적전력계통내재적물리특성。결합대용량원거리수전수단전망이급간헐성전원삼투솔증대적특점，분별종전망규화설계화운행공제량방면，토론전망안전분석、안전평고화안전방어적박약배절，제출강저정전풍험적대책화기술조시，병대전력계통안전삼도방선적배치제출료신적천술화건의。
Based on an analysis of the cause and developing process of blackouts in a super megacity power system,the key factors endangering the security of the system are pointed out.The power system intrinsic physical characteristic is expounded that in the overload condition of a power transmission grid in the receiving-end grid,the interactions between various electrical variables can cause the system state to deteriorate gradually during the adj ustment process of the generator units in the receiving-end grid.By referring to the characteristics of the receiving-end grid in a long distance power transmission system with large capacity and the problems from increasing penetration of intermittent generation sources,the weak links of the security analysis,security assessment and security defense system are discussed in terms of power grid planning and operation control,respectively.Countermeasures to reduce blackout risk are presented.A new expatiation and recommendation on the configuration of three-precautionary lines for insuring the security of the power system is put forward. <br> This work is supported by State Grid Corporation of China(No.5150011045).