基于功率追蹤的輸電網(wǎng)損耗分配方法研究

本文針對傳統(tǒng)功率追蹤法的不足，給出了線路和變壓器元件上的復功率損耗分配計算的方法，推導了具有多條等值支路的電力元件的復功率損耗分配算法，提出了一種適用任意結構輸電網(wǎng)的復功率損耗分配方法。這種方法考慮了有功和無功之間的交叉作用對損耗分配的影響，克服了已有追蹤法需要將線路對地電容做電源或移植處理、需要虛構理想的無損網(wǎng)絡、需要將有功和無功潮流解禍追蹤的缺陷。
關鍵詞：輸電網(wǎng)；損耗分配；功率追蹤
Study on the losses location of transmission system based on power tracing Yuan Shangzun1, Nie ling1, Zhong Shaobo2 (1. School of Electronics Information, Chongqing Technological Institute, Chongqing, 400042 2. Chongqing University, Chongqing 400030) Abstract: Pointing to the deficiency of traditional power tracing method, a new method for allocating complex losses in power elements with multi-equivalent series and parallel branches is derived resorting to newly proposed branch's losses allocation method. Then a new complex loss allocation method is proposed, which is applicable for arbitrary configurations of transmission systems. The impact on losses allocation of interaction between active and reactive powers is well considered in this method. The new method is concise and easy to implement. It overcomes defects of the existing tracing methods, such as need transplanting all parallel (or shunt) branches, making fictitious lossless networks and tracing P/Q flow in a decomposition way.
Key words: transmission system; losses location; power tracing