CAJ | 학술논문

跨区电网互联、大规模新能源并网、需求侧互动将给大电网的运行带来更多的复杂性、不确定性与风险性。文中在研究电网风险评估模型的基础上，提出一种提高断面输电能力的紧急控制措施风险量化评估方法。该方法考虑切机、切负荷、直流调制等紧急控制措施的代价以及《电力安全事故应急处置和调查处理条例》出台对安全稳定控制切负荷的影响，以暂态失稳风险指标的形式量化评估系统暂态稳定水平，同时分析了不同控制量对于风险值的影响。通过将系统安全稳定性与经济性相结合，以指标形式表征提升单位断面输电能力的代价，达到对紧急控制措施进行综合评价与筛选的目的。
과구전망호련、대규모신능원병망、수구측호동장급대전망적운행대래경다적복잡성、불학정성여풍험성。문중재연구전망풍험평고모형적기출상，제출일충제고단면수전능력적긴급공제조시풍험양화평고방법。해방법고필절궤、절부하、직류조제등긴급공제조시적대개이급《전력안전사고응급처치화조사처리조례》출태대안전은정공제절부하적영향，이잠태실은풍험지표적형식양화평고계통잠태은정수평，동시분석료불동공제량대우풍험치적영향。통과장계통안전은정성여경제성상결합，이지표형식표정제승단위단면수전능력적대개，체도대긴급공제조시진행종합평개여사선적목적。
Transregional interconnection of power systems,large-scale integration of renewable energy and interaction on the demand side are bringing new challenges to the operation of large-scale power system,such as complexity,uncertainty and riskiness.A risk quantitative assessment method of emergency control measures is proposed to improve power grid transmission capacity based on a study of the risk assessment model.Both the cost of emergency control measures of generator tripping,load shedding and HVDC modulation and stabilized control strategies influenced by Rule 599,are taken into consideration in this method.The transient stability level of power systems will be quantitatively assessed in the form of transient instability risk index.Also the influence of different control quantities on risk values is analyzed.By combining power grid security and stability with economy,this paper characterizes the cost of improving unit transmission capacity by utilizing the index to achieve the goal of comprehensively evaluating and screening emergency control measures.