本文關(guān)鍵詞： 柔性直流配電網(wǎng) 保護(hù)配置 直流線路 極間故障　出處：《電力系統(tǒng)保護(hù)與控制》2016年21期 　論文類型：期刊論文

【摘要】：直流配電網(wǎng)在改善供電可靠性和電能質(zhì)量、實(shí)現(xiàn)分布式電源無擾并網(wǎng)以及城市直流負(fù)荷接入等方面,相比交流配網(wǎng)有較大優(yōu)勢(shì)。然而直流線路具有故障電流上升速度快、峰值大的特點(diǎn),極易損壞換流器件及設(shè)備絕緣,因此,對(duì)直流線路的故障處理提出了較高的要求�；贛MC的柔性直流配電網(wǎng)可以通過接地方式的設(shè)計(jì)實(shí)現(xiàn)直流線路單極故障穿越,而危害更大的極間短路故障尚無很好的處理方法。以背靠背典型兩端直流配電網(wǎng)為例,分析了直流線路極間短路故障時(shí)的暫態(tài)特性及其對(duì)交流系統(tǒng)、換流器及直流側(cè)的影響。分析了極間故障時(shí)的控制保護(hù)策略及其與主要設(shè)備參數(shù)的配合關(guān)系。在電磁暫態(tài)仿真軟件PSCAD/EMTDC下進(jìn)行了直流線路極間短路故障的仿真研究,驗(yàn)證了該控制保護(hù)配置與主設(shè)備參數(shù)配合策略的正確性。
[Abstract]:The DC distribution network has great advantages over AC distribution network in improving the reliability and quality of power supply, realizing the distributed power supply without disturbance and connecting to the city DC load. However, the DC line has a fast rise speed of fault current. High peak value, easy to damage converter devices and equipment insulation, therefore, This paper puts forward higher requirements for the fault treatment of DC line. The flexible DC distribution network based on MMC can realize the unipolar fault traversing of DC line through the design of grounding mode. However, there is no good way to deal with the more harmful inter-pole short-circuit fault. Taking the typical back-to-back typical two-terminal DC distribution network as an example, the transient characteristics of the inter-pole short-circuit fault of DC line and its effect on AC system are analyzed. The effects of converter and DC side are analyzed. The control protection strategy and its coordination with the main equipment parameters are analyzed. The simulation research of the short-circuit fault between the poles of DC line is carried out under the electromagnetic transient simulation software PSCAD/EMTDC. The correctness of the control protection configuration and the main equipment parameter matching strategy is verified.
【作者單位】： 北京四方繼保自動(dòng)化股份有限公司;深圳供電局電力技術(shù)研究中心;
【基金】：國家863課題“緊湊化多端柔性直流配電網(wǎng)控制保護(hù)關(guān)鍵技術(shù)”(2015AA050103)~~
【分類號(hào)】：TM721.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前4條

1 畢勇;劉志東;邱明波;汪煒;田宗軍;胡燕偉;黃因慧;;進(jìn)電方式對(duì)P型硅極間電阻影響的試驗(yàn)研究[J];電加工與模具;2009年05期

2 顧根華,鄭建春,黃勝,周洪敏,劉銘,郭鳳翔;電極間電阻計(jì)算的二維問題研究[J];工業(yè)加熱;2003年01期

3 ;封四產(chǎn)品照片說明[J];電力電容器;1995年02期

4 ;[J];;年期

，

本文編號(hào)：1513365