Study on Fast Evaluation Method of the Power Receiving Capability of the Multiple-Section Receiving-End System Considering Voltage Stability Constraint

Abstract

With the rapid growth of the end-system load, the power system lacks sufficient power supply, and the transient voltage stability after the large disturbance become worse. Considering the lack of quantitative evaluation method of the power receiving capability, a fast evaluation method of the power receiving capability of the multiple-Section receiving-end system considering voltage stability constraint is proposed in this paper. Firstly, an evaluation method of the power receiving capability of the single-section is proposed, which is combined with static voltage stability limit, the amplitude of transient power fluctuations, load power factor, reactive power of receiving-end system, transient voltage stability effect of HVDC. Based on the research of the single-section system, an evaluation method of the power receiving capability of the multiple-Section receiving-end system is proposed, which is utilized the interrelated relations between the average value and standard deviation of the multiple sections. This method can more fully and quickly evaluate the power receiving capability. The results are verified in the Hunan power system. The results show that the proposed method has better engineering applicability and it can be adopted to evaluation method of the power receiving capability of the multiple-section receiving-end system considering voltage stability constraint.