CAJ | 학술논문

目前的继电保护可靠性研究主要是评估继电保护系统本身的可靠性,基本上没有定量分析继电保护对一次设备可靠性影响,在大电网可靠性评估中有必要定量计算继电保护对一次设备可靠性影响.建立了一种评估继电保护系统对一次设备可靠性影响的马尔科夫模型,得到继电保护系统对一次设备的整体不可用度的贡献量,并对部分可靠性参数进行了灵敏度分析,为进一步准确评估大电网可靠性的影响提供了参考.以IEEE-RTS79为算例,计算结果验证了所提方法的正确性.
목전적계전보호가고성연구주요시평고계전보호계통본신적가고성,기본상몰유정량분석계전보호대일차설비가고성영향,재대전망가고성평고중유필요정량계산계전보호대일차설비가고성영향.건립료일충평고계전보호계통대일차설비가고성영향적마이과부모형,득도계전보호계통대일차설비적정체불가용도적공헌량,병대부분가고성삼수진행료령민도분석,위진일보준학평고대전망가고성적영향제공료삼고.이IEEE-RTS79위산례,계산결과험증료소제방법적정학성.
At present the reliability study of relay protection mainly focuses on assessing the reliability of the protection system itself. But the quantitative influence of protection system on the reliability of primary equipment is rarely analyzed, which is necessary for the large power networks. A Markov model is established to evaluate this effect. The unavailability of primary equipment attributed to protection system is obtained and sensitivity of some reliability parameters is analyzed. The reliability of large-scale power system may be further evaluated accurately based on the proposed method. The results of IEEE-RTS79 prove the correctness of the proposed method. This work is supported by National Natural Science Foundation of China (No. 51107090).