電力雙回線路繼電保護(hù)設(shè)備狀態(tài)檢修

呂淵　許洪新　李騰飛

摘 要：由于電網(wǎng)的系統(tǒng)越來越大，輸電線路電壓等級越來越高，現(xiàn)代輸電網(wǎng)管理和運營模式的變革迫在眉睫，這也要求電力系統(tǒng)的運行和控制更安全、更穩(wěn)定、更高效、更靈活。隨著電力系統(tǒng)的不斷發(fā)展和繼電保護(hù)設(shè)備的大量使用，傳統(tǒng)的檢修模式已經(jīng)不能適用于當(dāng)前的電力系統(tǒng)，因此，電力系統(tǒng)對繼電保護(hù)設(shè)備的檢修模式進(jìn)行了改革，構(gòu)建電力雙回線路繼電保護(hù)設(shè)備故障狀態(tài)預(yù)測模型，以繼電保護(hù)二次回路的輸出電流有效值和三次諧波平面電流分量為約束變量，進(jìn)行二次回路的各相定子電流穩(wěn)定性分析，檢修電力雙回線路繼電保護(hù)設(shè)備的狀態(tài)。

關(guān)鍵詞：電力雙回線路;繼電保護(hù)設(shè)備;檢修

中圖分類號：TM774 文獻(xiàn)標(biāo)識碼：A 文章編號：1003-5168（2019）32-0067-03

Condition-based?Maintenance?of?Relay?Protection

Equipment?in?Power?Double?Circuits

LYU?Yuan1 XU?Hongxin1，2 LI?Tengfei3

（1.?Hydropower?Plant?of?PetroChina?Changqing?Oilfield?Company，Qingyang?Gansu?745100;2.China?University?of?Petroleum?（East?China），Dongying?Shandong?257061;3.Material?Supply?Division?of?PetroChina?Changqing?Oilfield?Company，Xi'an?Shaanxi?710016）

Abstract：?As?the?grid?system?becomes?larger?and?larger，?and?the?transmission?line?voltage?level?is?getting?higher?and?higher，?the?transformation?of?modern?transmission?grid?management?and?operation?models?is?imminent.?This?also?requires?the?operation?and?control?of?power?systems?to?be?safer，?more?stable，?more?efficient，?and?more?flexible.?With?the?continuous?development?of?the?power?system?and?the?extensive?use?of?relay?protection?equipment，?the?traditional?maintenance?mode?can?no?longer?be?applied?to?the?current?power?system.?Therefore，?the?power?system?has?reformed?the?maintenance?mode?of?relay?protection?equipment，?and?constructed?a?fault?state?prediction?model?of?relay?protection?equipment?for?power?double-circuit?lines，and?analyzed?the?stator?current?stability?of?each?phase?of?the?secondary?circuit?by?taking?the?effective?value?of?the?output?current?of?the?secondary?circuit?of?the?relay?protection?and?the?plane?current?component?of?the?third?harmonic?as?constraint?variables，?in?order?to?repair?the?status?of?the?power?protection?equipment?of?the?double-circuit?line.

Keywords：?power?double?circuit;relay?protection?equipment;overhaul

隨著我國電力系統(tǒng)的不斷進(jìn)步，電網(wǎng)結(jié)構(gòu)漸漸趨于復(fù)雜化，范圍不斷擴大，所以設(shè)備檢修工作量也不斷加大，人們必須重視電力雙回線路繼電保護(hù)設(shè)備狀態(tài)檢修工作[1，2]。本文從檢修方法和檢修過程兩個方面深入研究了電力雙回線路繼電保護(hù)設(shè)備的狀態(tài)檢修。

1 電力雙回線路繼電保護(hù)設(shè)備狀態(tài)檢修的方法

1.1 電力雙回線路繼電保護(hù)設(shè)備故障狀態(tài)預(yù)測模型

為了實現(xiàn)對電力雙回線路繼電保護(hù)設(shè)備狀態(tài)故障預(yù)測，首先構(gòu)建雙回線路繼電保護(hù)設(shè)備故障狀態(tài)預(yù)測模型，以繼電保護(hù)二次回路的輸出電流有效值和三次諧波平面電流分量為約束變量，進(jìn)行等效電路分析。繼電保……