1、several group number, then with b a, =c,c is is methyl b two vertical box between of accurate size. Per-23 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for

2、 measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a, to b vertical box distance for b, list can measuredseveral group number, then with b a, =c,c is is methyl b two vertical box betwe

3、en of accurate size. Per-23 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid e

4、rrors, specific method is from baseline to methyl vertical box center line distance for a, to b vertical box distance for b, list can measuredseveral group number, then with b a, =c,c is is methyl b two vertical box between of accurate size. Per-23 measurement, such as proceeds of c values are equal

5、 and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line dist

6、ance for a, to b vertical box distance for b, list can measured電力系統(tǒng)運(yùn)行經(jīng)驗(yàn)說明，架空線路絕大多數(shù)的故障都是“瞬時(shí)性的，斷路器跳閘后線路的絕緣性能絕緣子和空氣間隙能得到恢復(fù)，再次重合能成功，這就提高了電力系統(tǒng)供電的可靠性。因此，自動(dòng)重合閘是廣泛應(yīng)用于架空線輸電和架空線供電線路上的有效反事故措施電纜輸、供電不能采用。那么，變電站常用的重合閘邏輯是怎樣的，我們今天就來學(xué)習(xí)一下。對(duì)于220kV及以上的變電站，線路保護(hù)裝置都為雙套配置。雙套保護(hù)的重合閘之間該如何配合，怎么樣保證重合閘在可以正確動(dòng)作的情況下不會(huì)二次重合，我們就以220kV

7、變電站的配置為例來簡(jiǎn)單介紹一下。早期傳統(tǒng)站的重合閘配置情況根據(jù)不同地區(qū)用戶習(xí)慣，在間隔正常運(yùn)行時(shí)，該間隔只投入其中一套保護(hù)裝置的重合閘，而將另一套保護(hù)的重合閘出口壓板取下。我們以線路保護(hù)PRS-753A和操作箱PRS-789為例，當(dāng)保護(hù)動(dòng)作后，第一套線路保護(hù)啟動(dòng)自身重合閘，第二套線路保護(hù)通過“至重合閘壓板，來啟動(dòng)第一套的重合閘，經(jīng)第一套保護(hù)判定滿足條件后合閘出口，該方式最終的重合閘命令由一套保護(hù)裝置發(fā)出，從根本上杜絕了二次重合的風(fēng)險(xiǎn)。兩套屏間聯(lián)系回路如下列圖：圖1 傳統(tǒng)重合閘配置國(guó)網(wǎng)標(biāo)準(zhǔn)化之后的重合閘配置情況在國(guó)網(wǎng)標(biāo)準(zhǔn)化的Q/GDW 161-2022號(hào)文中專門提到，兩套線路保護(hù)的交流及跳合閘回

8、路完全獨(dú)立，取消了相互閉鎖和啟動(dòng)回路。那這樣是如何來防止二次重合閘的呢？有局部地區(qū)，直接只投入一套保護(hù)裝置的重合閘，另外一套保護(hù)的重合閘完全退出，這樣可以防止二次重合閘，但是犧牲了重合閘雙重化的功能。實(shí)際上，如果是合閘于故障，我們保護(hù)裝置會(huì)發(fā)一個(gè)永跳命令即三跳閉重到操作箱的TJR，TJR的重動(dòng)繼電器來閉鎖另外一套保護(hù)的重合閘，導(dǎo)致重合閘放電。兩屏間聯(lián)系如下列圖：圖2 國(guó)標(biāo)后的重合閘配置智能站中的重合閘配置情況在智能站中，我們都是配置雙套智能終端，分別用于第一套、第二套保護(hù)，也就是每套保護(hù)都有自己獨(dú)立的操作箱，那他們的重合閘具體是如何實(shí)現(xiàn)互相閉鎖的呢？例如某間隔在運(yùn)行情況下由于某種原因出現(xiàn)故障，這時(shí)保護(hù)跳開，然后重合閘保護(hù)動(dòng)作重合于故障，第一套保護(hù)作用于第一套智能