Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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基于故障影響范圍的風(fēng)險(xiǎn)場(chǎng)景篩選方法

來(lái)源:電工電氣發(fā)布時(shí)間:2023-03-04 10:04 瀏覽次數(shù):350

基于故障影響范圍的風(fēng)險(xiǎn)場(chǎng)景篩選方法

裴超1,王大磊2,馬驍1,夏彥1,王曼1,張凌躍1,汪昌霜1
(1 國(guó)網(wǎng)重慶市電力公司市北供電分公司, 重慶 401147;
2 國(guó)網(wǎng)重慶市電力公司市區(qū)供電分公司, 重慶 400015)
 
    摘 要:在電網(wǎng)風(fēng)險(xiǎn)評(píng)估中,需要考慮的風(fēng)險(xiǎn)場(chǎng)景眾多,特別是多重故障場(chǎng)景數(shù)量巨大,給風(fēng)險(xiǎn)評(píng)估指標(biāo)的在線計(jì)算造成了嚴(yán)重困難。提出了一種基于故障影響范圍的風(fēng)險(xiǎn)場(chǎng)景篩選方法,該方法將存在支路越限的 N-1 故障和存在解列情況的 N-2 故障歸入風(fēng)險(xiǎn)場(chǎng)景集,并基于支路開(kāi)斷因子確定 N-1 故障影響范圍;分析了各 N-2 故障的故障影響范圍交疊情況,在此基礎(chǔ)上采用快速潮流計(jì)算,根據(jù)是否存在支路潮流越限篩選得到風(fēng)險(xiǎn)場(chǎng)景集。仿真算例表明,上述方法可大幅提升風(fēng)險(xiǎn)場(chǎng)景,特別是多重故障風(fēng)險(xiǎn)場(chǎng)景的辨識(shí)速度,更好滿足了在線風(fēng)險(xiǎn)評(píng)估的應(yīng)用要求。
    關(guān)鍵詞: 電網(wǎng)風(fēng)險(xiǎn)評(píng)估;多重故障;快速潮流計(jì)算;風(fēng)險(xiǎn)場(chǎng)景篩選
    中圖分類號(hào):TM711     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2023)02-0029-05
 
A Risk Contingencies Selection Method Based on Fault Influence Range
 
PEI Chao1, WANG Da-lei2, MA Xiao1, XIA Yan1, WANG Man1, ZHANG Ling-yue1, WANG Chang-shuang1
(1 State Grid Chongqing Electric Power Company Shibei Power Supply Company, Chongqing 401147, China;
2 State Grid Chongqing Electric Power Company Shiqu Power Supply Company, Chongqing 400015, China)
 
    Abstract: A lot of risk scenarios need to be considered in power grid risk assessment, especially there are huge numbers of multi-contingencies scenarios which have caused serious problems for online calculation of risk assessment indicators.The paper proposes a risk contingencies selection method according to fault influence range. It includes N-1 faults with branch out-of-limit and N-2 faults with splitting into the risk scenario set and determines the influence range of N-1 faults based on the branch outage factor.Besides, it also analyzes the overlapping of fault influence ranges of N-2 faults, which is the basis of selecting risk scenario sets according to the existence of a branch flow out of limit through fast power flow calculation. The simulation results show that this method can significantly improve the identification speed of multi-contingencies risk scenarios and meet the requirements of online risk assessment in a better way.
    Key words: power grid risk assessment; multi-contingencies; fast power flow calculation; risk contingencies selection
 
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