CAJ | 학술논문

提出一种基于系统监测点优化配置的电压暂降故障点定位新方法。针对由输电线路短路故障引起的电压暂降，首先以监测点数目最少为目标，以全网各节点电压暂降完全可观测为约束条件，构建监测点优化配置的0—1线性规划模型。然后根据监测点最优配置结果及其修正方案，以故障时监测点电压幅值信息为量测量，应用最小二乘原理对故障点故障位置及故障线路进行定位估计。通过对IEEE39节点标准测试系统的测试分析，验证了该方法的有效性与实用性。
제출일충기우계통감측점우화배치적전압잠강고장점정위신방법。침대유수전선로단로고장인기적전압잠강，수선이감측점수목최소위목표，이전망각절점전압잠강완전가관측위약속조건，구건감측점우화배치적0—1선성규화모형。연후근거감측점최우배치결과급기수정방안，이고장시감측점전압폭치신식위량측량，응용최소이승원리대고장점고장위치급고장선로진행정위고계。통과대IEEE39절점표준측시계통적측시분석，험증료해방법적유효성여실용성。
A new method based on optimal voltage sag monitoring program is proposed to locate any type of fault on the transmission line when only voltage sag data are available. Firstly a 0-1 linear programming-based model is built to solve the problem of optimization allocation. The object of the optimization model is to minimize the number of the monitoring buses and the key constraint is to guarantee the observability of the whole system considering any type of fault （balanced or unbalanced）. Then based on the optimal monitoring program, the fault position and faulted transmission line are estimated by implementing the least squares method. In this estimation, only the voltage sag magnitudes recorded at the limited optimal monitoring buses are available measurements. The performance of the proposed method is illustrated in an IEEE 39-bus test system, and the validity of the method is testified.