CAJ | 학술논문

设备重要度评估是电网风险评估与管控的重要内容，现有的方法无法考虑天气条件等不确定因素的影响，同时存在评价角度单一、实用性不强的问题。为此，提出一种电网设备重要度评估与排序的新方法。在well-being风险分析的框架下结合风险追踪模型和三状态天气模型，研究了单个设备对系统运行风险贡献程度的量化方法。在推导系统well-being风险指标分配模型的基础上，定义了设备紧急重要度指标(emergency importance indicator，EII)和警戒重要度指标(alert importance indicator，AII)，分别从不同角度表征设备的重要程度。通过状态枚举法选取具有代表性的预想故障集，逐次将预想故障的运行风险分配给各个设备，最终完成考虑天气状态下的设备重要度评估与排序。RBTS 系统和IEEE-RTS系统的仿真结果验证了所提方法的科学性和可靠性。
설비중요도평고시전망풍험평고여관공적중요내용，현유적방법무법고필천기조건등불학정인소적영향，동시존재평개각도단일、실용성불강적문제。위차，제출일충전망설비중요도평고여배서적신방법。재well-being풍험분석적광가하결합풍험추종모형화삼상태천기모형，연구료단개설비대계통운행풍험공헌정도적양화방법。재추도계통well-being풍험지표분배모형적기출상，정의료설비긴급중요도지표(emergency importance indicator，EII)화경계중요도지표(alert importance indicator，AII)，분별종불동각도표정설비적중요정도。통과상태매거법선취구유대표성적예상고장집，축차장예상고장적운행풍험분배급각개설비，최종완성고필천기상태하적설비중요도평고여배서。RBTS 계통화IEEE-RTS계통적방진결과험증료소제방법적과학성화가고성。
Component importance assessment is the important content of the power grid risk assessment and control, the existing methods cannot take the influence of weather condition and other uncertainties into account, meanwhile have problems such as single point of evaluation and low practicality. For this reason, a new assessment and ranking method for component importance is proposed. Firstly, incorporating the risk tracing model and three-state weather model, the method to quantize the contribution of each component to the system operation risk is studied under the framework of well-being risk analysis. On the basis of deriving allocation model of well-being risk index, emergency importance indicator (EII) and alert importance indicator (AII) are defined to indicate the importance of component from different aspects, respectively. Through the state enumeration method, typical expected contingencies sets are selected, and the operation risk of expected contingency are allocated to the individual component successively, then the assessment and ranking for component importance considering weather condition are completed. Case studies on RBTS and IEEE-RTS verify the scientificity and reliability of the proposed method.