计及负荷率调整的可靠性评估

Assessment of JiJi Load Factor Adjustment Reliability

电网负荷率是描述电力负荷特征的重要指标,提高负荷率对电力系统可靠性意义深远。考虑负荷特性对发电系统可靠性有直接影响,针对负荷曲线不平缓的负荷特性,提出计及不同负荷率下对系统可靠性的影响。并用二分法及等比例压缩法对负荷率进行调整,分析在不同的负荷率下,两种负荷率调整算法对发电系统可靠性指标的影响大小,并在不同可靠性水平下分析了两种方法的优缺点。最后应用二分法及等比例调整法,对负荷率调整后IEEE-RBTS标准系统的发电部分进行可靠性评估,算例验证了所属的两种算法的有效性,并明显提高发电系统的可靠性水平。

Considering load characteristics have direct effects on the reliability of power system,in view of the load characteristics that the load curve is not gentle,This paper put forward the influence of system reliability under different load factor,adjust the load factor with dichotomy and constrain compression,analyse the influence that the two adjustment algorithms have on the power system reliability index under the different load factor,and analyze the advantages and disadvantages of the two methods in different reliability level.Finally,we estimate reliabilityof the power part of the IEEE-RBTS standard system after load factor adjustment.