基于最優路徑的電網狀態計算與不良數據辨識
杜亮
(廣州供電局有限公司,廣東 廣州 510600)
摘 要:電網狀態計算與不良數據辨識,能為電力系統運行分析提供準確可靠的數據系統,是電網安全穩定控制的基礎。提出了一種考慮不同量測精度和量測方向的網絡搜索新方法,選擇量測組合精度更高的最優路徑進行狀態計算。利用電壓一致性檢測、PMU/SCADA一致性檢測、KCL一致性檢測和KVL一致性檢測方法,實現不良數據辨識。IEEE 14節點系統算例結果表明,最優路徑法具有較高的計算精度,且能正確辨識不良數據。
關鍵詞:最優路徑;狀態計算;不良數據辨識;一致性檢測
中圖分類號:TM744 文獻標識碼:A 文章編號:1007-3175(2019)11-0025-05
Power Grid State Calculation and Outlier Detection Based on Optimal Path-Finding Technique
DU Liang
(Guangzhou Power Supply Co., Ltd, Guangzhou 510600, China)
Abstract: State calculation and outlier detection can provide reliable data for power grid security and stability control, so they are extremely important for power system. This paper presented a new state calculation method based on the optimal path-finding network search technique by selecting calculation paths considering redundancy, accuracy and direction. This paper used the voltage consistency check, the PMU/SCADA consistency check, the KCL consistency check and the KVL consistency check to realize the outlier detection. Examples on IEEE 14 bus system show that this method has a high accuracy in state calculation and outlier detection in power system.
Key words: optimal path; state calculation; outlier detection; consistency check
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