劉健配電網(wǎng)故障處理關(guān)鍵技術(shù)-wenkub
2023-05-23 08:16:52 本頁面
【正文】 ead feeder Example 1 overhead feeder LS LS LS LS LS CB CB CB CB CB CB CB CB CB A temporary fault on the trunk Example 1 overhead feeder LS LS LS LS LS CB CB CB CB CB CB CB CB CB A temporary fault on the trunk Example 1 overhead feeder LS LS LS LS LS Reclosing CB CB CB CB CB CB CB CB A temporary fault on the trunk Example 1 overhead feeder LS LS LS LS LS CB CB CB CB CB CB CB CB CB A permanent fault on the trunk Example 1 overhead feeder LS LS LS LS CB CB CB CB CB CB CB CB A permanent fault on the trunk Fail of reclosing Example 1 overhead feeder LS LS LS LS CB CB CB CB CB CB CB CB A permanent fault on the trunk Modified restoration by FA (telecontrol) Example 1 overhead feeder LS LS LS LS CB CB CB CB CB CB CB CB A permanent fault on the trunk Modified restoration by FA (telecontrol) Example 1 overhead feeder LS LS LS LS CB CB CB CB CB CB CB CB A permanent fault on the trunk Modified restoration by FA (telecontrol) Example 2: cables A 7 A8 A 5 A6 A 3 A4 A 1 A2 B 1 B 2 B 3 B 4 B 5 B 6 B 7 B 8 B 9 B 10 B 11 B 12 S 1 S 2 A 10 A9 A 12 A11 A 14 A 13 A 16 A 15 B 13 B 14 B 15 B 16 B 17 B 18 B 19 B 20 B 21 B 22 B 23 B 24 Ring main unit Ring main unit 優(yōu)點 ? 經(jīng)濟(jì) ? 分支線或用戶故障不影響主干線 . ? 級差整定方便 ? 瞬時故障時只須 ? 瞬時故障與永久故障判別簡單 ? 配電自動化邏輯簡單 模式化故障處理 典型模式化接線 ? “手拉手”環(huán)狀網(wǎng) ? 多分段多連接 ? 多供一備電纜網(wǎng) ? 4?6 接線 ? …… 一條饋線需要留有能帶動對側(cè)全部負(fù)荷的備用容量，因此正常情況下配電 資源的利用率小于 50%. “手拉手”環(huán)狀網(wǎng) 50% Each feeder is divided into two parts. The two parts of a feeder are linked to two different feeders, respectively. Each feeder only has to consider one half of the backup loading of the other feeder besides its own loading. Thus, the efficiency can be improved to 67% in the normal situation. 2分段 2連接 67% Each feeder is divided into three parts. The three parts of a feeder are linked to three different feeders, respectively. Each feeder only has to consider one third of the backup loading of the other feeder besides its own loading. Thus, the efficiency can be improved to 75% in the normal situation. 3分段 3連接 75% A7 A5
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