广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2015年
6期
75-81
,共7页
赵艳军%陈晓科%陈迅%杨汾艳
趙豔軍%陳曉科%陳迅%楊汾豔
조염군%진효과%진신%양분염
同塔多回输电线路%三相电流不平衡%不对称电磁感应电势%低阻回路%穿越电流%环流%相序排列
同塔多迴輸電線路%三相電流不平衡%不對稱電磁感應電勢%低阻迴路%穿越電流%環流%相序排列
동탑다회수전선로%삼상전류불평형%불대칭전자감응전세%저조회로%천월전류%배류%상서배렬
multiple circuit transmission lines on the same tower%unbalance of three-phase current%asymmetric electromag-netic induced potential%low resistance circuit%through current%circulating current%phase arrangement
采用叠加电磁感应电势矢量分解法，从环流电势和穿越电势的角度剖析同塔多回线路三相电流不平衡的机理，指出强不对称叠加感应电势和低阻回路是导致三相电流不平衡的根本原因。以广东电网220 kV 祥铁甲、乙线为案例进行仿真验证，结果表明优化同塔多回线路相序排列方式和改变流通路径可减小线路不平衡电流，且前者较为经济、可行。
採用疊加電磁感應電勢矢量分解法，從環流電勢和穿越電勢的角度剖析同塔多迴線路三相電流不平衡的機理，指齣彊不對稱疊加感應電勢和低阻迴路是導緻三相電流不平衡的根本原因。以廣東電網220 kV 祥鐵甲、乙線為案例進行倣真驗證，結果錶明優化同塔多迴線路相序排列方式和改變流通路徑可減小線路不平衡電流，且前者較為經濟、可行。
채용첩가전자감응전세시량분해법，종배류전세화천월전세적각도부석동탑다회선로삼상전류불평형적궤리，지출강불대칭첩가감응전세화저조회로시도치삼상전류불평형적근본원인。이엄동전망220 kV 상철갑、을선위안례진행방진험증，결과표명우화동탑다회선로상서배렬방식화개변류통로경가감소선로불평형전류，차전자교위경제、가행。
From points of circulating current and through potential,vector decomposition method for superimposed electro-magnetic induced potential was applied for analyzing mechanism of unbalanced three-phase current of multiple circuit trans-mission lines on the same tower,and it was pointed out the basic reason for causing unbalance three-phase current was asym-metric superimposed induced potential and low resistance circuit. A line and B line of 220 kV Xiangtie transmission line of Guangdong power grid was taken for example for simulating verification. The results indicate that it is able to reduce unbal-anced current of small lines by optimizing phase arrangement of the multiple circuit transmission lines on the same tower and changing circulation path and the former way is more economic and reliable.
