基于最優(yōu)路徑的電網(wǎng)狀態(tài)計(jì)算與不良數(shù)據(jù)辨識
杜亮
(廣州供電局有限公司,廣東 廣州 510600)
摘 要:電網(wǎng)狀態(tài)計(jì)算與不良數(shù)據(jù)辨識,能為電力系統(tǒng)運(yùn)行分析提供準(zhǔn)確可靠的數(shù)據(jù)系統(tǒng),是電網(wǎng)安全穩(wěn)定控制的基礎(chǔ)。提出了一種考慮不同量測精度和量測方向的網(wǎng)絡(luò)搜索新方法,選擇量測組合精度更高的最優(yōu)路徑進(jìn)行狀態(tài)計(jì)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(shí)現(xiàn)不良數(shù)據(jù)辨識。IEEE 14節(jié)點(diǎn)系統(tǒng)算例結(jié)果表明,最優(yōu)路徑法具有較高的計(jì)算精度,且能正確辨識不良數(shù)據(jù)。
關(guān)鍵詞:最優(yōu)路徑;狀態(tài)計(jì)算;不良數(shù)據(jù)辨識;一致性檢測
中圖分類號:TM744 文獻(xiàn)標(biāo)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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