CAJ | 학술논문

系统地研究了计及不确定性的配电网合环点安全性与经济性评估问题，并在某地配电网进行实际应用。首先，从配电网合环运行的实际需求出发，探讨一种配电网合环点的安全性与经济性评估的总体框架。其次，充分考虑电力系统状态的不确定性的影响，提出一种新的合环电流区间与网损区间计算方法。该方法可以确定合环电流和网损的变化范围，为配电网合环点的安全性与经济性评估提供依据。再次，提出一种新型的区间数比较方法，从可信度的角度对合环电流区间与网损区间的优劣情况进行对比。进一步提出一种新的配电网合环点的安全与经济性双层评估方法，从安全与经济两个层面选出总体最优的配电网合环点。最后，将所提方法应用于某地配电网合环点的选择中，结果表明了所提方法的可行性与有效性。
계통지연구료계급불학정성적배전망합배점안전성여경제성평고문제，병재모지배전망진행실제응용。수선，종배전망합배운행적실제수구출발，탐토일충배전망합배점적안전성여경제성평고적총체광가。기차，충분고필전력계통상태적불학정성적영향，제출일충신적합배전류구간여망손구간계산방법。해방법가이학정합배전류화망손적변화범위，위배전망합배점적안전성여경제성평고제공의거。재차，제출일충신형적구간수비교방법，종가신도적각도대합배전류구간여망손구간적우렬정황진행대비。진일보제출일충신적배전망합배점적안전여경제성쌍층평고방법，종안전여경제량개층면선출총체최우적배전망합배점。최후，장소제방법응용우모지배전망합배점적선택중，결과표명료소제방법적가행성여유효성。
The security and economy evaluation of closed loop point of distributed network considering uncertainty is studied, and then is applied in one actual distribution network. First, responding to the requirement of loop-closed operation of distribution metwork, a framework of security and economy evaluation of closed loop point is proposed. Secondly, taking into account the uncertainty of distribution network, a method of calculating the intervals of closed loop current and power loss is given based on interval theory, such then the scopes of closed loop current and power loss are made clear, respectively, providing a basis for the security and economy evaluation. Furthermore, a novel comparison method of interval number is put forward for comparing the intervals of closed loop current and power loss in probability. The two-level evaluation measure is also presented to synthesize the security and economy evaluation results, such that the optimal closed loop point of distribution network is chosen. Finally, the proposed method is applied in one actual distribution network, and the results show its feasibility and validity.