Standard requirements for load tap changers 負(fù)載開關(guān)轉(zhuǎn)換器的標(biāo)準(zhǔn)要求
Requirements for load tap changers 荷載抽頭變換器的要求
Comprehensive identification and field treatment for common faults of load tap changer of power transformer 基于概率神經(jīng)網(wǎng)絡(luò)的電力變壓器故障診斷
This thesis carries out studies aiming at the impact of load characteristics and on load tap changer on voltage stability 本文針對負(fù)荷特性和有載調(diào)壓變壓器對電力系統(tǒng)靜態(tài)電壓穩(wěn)定性的影響展開研究。
Powertransformers with off circuit tap-changer resp . on load tap changer; main dimensions and accessories, 2000 to 10000 kva and up to insulation class 110 n 分別帶斷路分接開關(guān)或載荷分接開關(guān)的功率變壓器.2000
This kind of on-load tap changer has the merits of advanced structure, operating reliably, long useful life and maintenance freely, it is suitable for oil-immersed three-phases transformer with frequency 50hz, rated voltage 35kv and below and rated current under 400a and below 統(tǒng)一設(shè)計的有載分接開關(guān),具有結(jié)構(gòu)先進(jìn),動作可靠,使用壽命長,維護(hù)方便等優(yōu)點,適用與50hz,額定電壓在35kv及以下,額定電流在400a及以下的三相油浸式變壓器。
In this dissertation, correlative research of longer-term voltage stability have been carried out, including some slow dynamic elements, such as on-load tap changer ( oltc ), maximum excitation limiters ( mel ), etc . the effects of these slow dynamic elements on the course of voltage instability or collapse are revealed from the point of view of time-domain simulation 本文基于psse程序中的擴(kuò)展動態(tài)仿真模塊,對考慮有載調(diào)壓變壓器(oltc)、最大勵磁限制器等慢動態(tài)元件的中長期電壓穩(wěn)定進(jìn)行了相關(guān)的研究,從時域仿真的角度揭示這些慢動態(tài)元件在電壓崩潰過程中所起的作用。
The impact of load characteristics and on load tap changer on static voltage stability is analyzed with the methods based on v-q and v-p curves, and the phenomenon of voltage stability voltage instability and voltage collapse are studied with steady-state simulation . finally the thesis presents the essential explanations of both voltage stability and the mechanism of voltage collapse . xu yonghua ( electrical engineering ) directed by prof 通過電壓?功率曲線分析法定性分析了不同負(fù)荷特性和有載調(diào)壓變壓器對靜態(tài)電壓穩(wěn)定性的影響,并通過靜態(tài)仿真法從物理現(xiàn)象上研究了電壓失穩(wěn)和電壓崩潰現(xiàn)象,最后針對這些現(xiàn)象給出了關(guān)于電壓穩(wěn)定、以及電壓崩潰的本質(zhì)解釋。