頁籤選單縮合
| 題 名 | 電力系統暫態之研究=The Study of Transient's in Power Systems |
|---|---|
| 作 者 | 曲毅民; | 書刊名 | 樹德學報 |
| 卷 期 | 21 1998.03[民87.03] |
| 頁 次 | 頁213-228 |
| 分類號 | 448.115 |
| 關鍵詞 | 暫態過高電壓; 切換; 突波; 進行波; 入射波; 反射波; 架空接地線; Transient overvoltage; Switching; Switching surge; Traveling-wave; Incidentwave; Reflected wave; Over head ground line; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 電力系統上的暫態反應將產生過高之暫態電壓(Transient overvoltage)形成 暫態反應之因素有二:其一是外在之雷電,其二是內部開關之切換,雷電對電力系統之設 備將是一項潛在性的威脅,負載的突增猛減之改變動作產生突波電壓,可能造成系統上設 備的絕緣破壞,而導致跳機。意外的停電將造成工商界之損失,甚至引起火警等,降低供 電之品質。〔1〕 |
| 英文摘要 | Transient Phenomenon is an aperiodic function of time and does not last longer. The duration for which they last is very insignificant as compared with the operating time of the system. They are very important because depending upon the severity of these fransients, the system may result into black out in a city, shut down of a plant, fires in some buildings etc. Power system can be considered as wade up of Lineat impedance elements of R.L.C. The fault, then, corresponds to the closing of a switch in the electrical circuit. The closing of this switch changes the circuit so that a new distribution of currents and voltages os brought about. This redistribution is accompanied in general by a transient periad during which the resultant currents and voltages may momentarily be relatively high. It is very important to realize that this redistribution of currents and voltages can not take place instantaneously for the following reasons: 1. The electromagnetic energy stored by an inductance L is 1/2LI□. 2. The electrostatic energy stored by a capacitor C is 1/2CV□. 3. The consumes energy by a resistance R is I□R. Transients in which only one form of energy- storage , magnetic of electric is Concerned, are called single energy transients, Where both magnetic and electric energies are contained in or accepted by the circuit, double energy transients are involved. The transient voltages are affected by the mumber of connections and the arrangements of the circuits. |
本系統中英文摘要資訊取自各篇刊載內容。