CAJ | 학술논문

现有文献计算配电网最大供电能力(total supply capability，TSC)的方法均未计及线路潮流引起的电压降落和网络损耗，其结果准确性应用于实际运行还存在一定难度。为解决这一基础性问题，首先提出基于潮流计算的TSC模型，精确计及了电压降落和网络损耗。该模型基于馈线间互联关系建立，其计算结果能精确到馈线负荷，同时考虑了主变N-1故障和馈线N-1故障。其次，针对该含有迭代的非线性规划模型，提出一种基于前推回推的迭代和广义梯度法的求解方法。最后，通过算例对比所提方法与现有文献方法，并利用N-1安全校验仿真来验证。结果表明，所得TSC 结果更为准确，为TSC理论的应用从规划向运行提供了参考。
현유문헌계산배전망최대공전능력(total supply capability，TSC)적방법균미계급선로조류인기적전압강락화망락손모，기결과준학성응용우실제운행환존재일정난도。위해결저일기출성문제，수선제출기우조류계산적TSC모형，정학계급료전압강락화망락손모。해모형기우궤선간호련관계건립，기계산결과능정학도궤선부하，동시고필료주변N-1고장화궤선N-1고장。기차，침대해함유질대적비선성규화모형，제출일충기우전추회추적질대화엄의제도법적구해방법。최후，통과산례대비소제방법여현유문헌방법，병이용N-1안전교험방진래험증。결과표명，소득TSC 결과경위준학，위TSC이론적응용종규화향운행제공료삼고。
The models and methods of total supply capability (TSC) for power distribution network do not take network loss and voltage drop into account, so it is hard to be applied to the real power system. Firstly, this paper proposed the model of TSC based on the power flow calculation which formulated the network loss and voltage drop. This model was also based on the link of feeders;and considered not only the load of feeders, but also the N-1 contingency for transformers and feeders. Secondly, considering the nonlinearity and iteration of the model, this paper proposed a method which was based on the backward/forward sweep algorithm and general reduced gradient method. Finally, the result of this paper was compared to the old feeder-based model and it passed the N-1 simulation. The results show that the TSC is just on the boundary of N-1 security, which means that the proposed TSC model is accurate. The proposed model is a foundation for the TSC application from planning to operation.