CAJ | 학술논문

随着社会的发展，用户对供电电压质量的需求也逐渐复杂化，传统的可靠性指标已经不能满足需求。在传统可靠性的基础上，本文定义电压可用性为配电系统提供连续且满足一定电压质量要求的可确保用户持续使用的电力的能力，其用于描述不同电力干扰下用户正常运行的水平。本文从电压扰动的技术指标出发，在能量指标的基础上，提出了不同电压扰动严重度的量化方法，进而得出区域严重度指标。同时将扰动发生频率指标纳入电压可用性的评估流程，求取各点的年扰动程度指标，通过划定合理界限，得到电压可用性的等级。最后，结合某地27个监测点的实际数据，给出一种电压可用性的等级划分实例。结果显示，该方法所得等级可以很好地反应出各监测点的电压可用性水平。
수착사회적발전，용호대공전전압질량적수구야축점복잡화，전통적가고성지표이경불능만족수구。재전통가고성적기출상，본문정의전압가용성위배전계통제공련속차만족일정전압질량요구적가학보용호지속사용적전력적능력，기용우묘술불동전력간우하용호정상운행적수평。본문종전압우동적기술지표출발，재능량지표적기출상，제출료불동전압우동엄중도적양화방법，진이득출구역엄중도지표。동시장우동발생빈솔지표납입전압가용성적평고류정，구취각점적년우동정도지표，통과화정합리계한，득도전압가용성적등급。최후，결합모지27개감측점적실제수거，급출일충전압가용성적등급화분실례。결과현시，해방법소득등급가이흔호지반응출각감측점적전압가용성수평。
As the traditional reliability indexes are no longer to meet the needs of more complicated power quality demands for end-users, this paper introduces the concept of voltage availability to describe how the operation conditions are influenced by different voltage disturbances based on the traditional reliability. Besides outages in the traditional reliability, voltage dips, swells, short interruptions are also considered to assess the voltage availability. The severity index of voltage availability is evaluated with the help of technical characteristics of various disturbances, such as energy index. Moreover, combining severity index with the frequency of disturbances in different sites, the method is able to get the final voltage availability index, based on which the levels of voltage availability are determined. An example is made with the data of 27 sites, which confirms the usefulness of this method.