电压暂降影响油井运行的分析与对策

近年来,随着采油厂的四化建设的不断推进,油井控制设备对电压质量的要求也越来越高。因电压瞬时暂降造成油井大面积停井的故障频繁发生,影响油井开采的连续性,严重时造成油井杆卡,影响输油油水流度比,停井的时间不长,但需要较长时间来恢复油井产能。通过现场调研分析,油井四化设备和变频器控制器自带保护与线路保护定值缺少配合,未能躲过电压暂降周期,从而造成油井停井。针对这一问题,通过优化电网运行方式,提高电网运行可靠性,优化油井设备保护定值,来降低电压暂降对油井运行的影响。

县级供电企业电网经济调度问题研究

分析了县级供电企业电网经济调度中的问题,探讨了电网经济调度的方法和措施,以节约电能,促进县级电网的稳定发展。

低压配电故障原因分析及对策

电力系统中,低压配电装置是比较重要的设备,它是确保用户安全用电的重要组成部分,作为维护电网供电可靠性的技术人员来说,需要给予高度重视。技术人员需要了解低压配电装置,严格履行国家标准,与此同时需要避免人为因素造成损失,并定期对用户开展安全用电知识培训。本文首先介绍了低压配电故障产生的原因,然后结合实际案例给出了具体的方法措施,希望本文的工作能为从事相关工作的人员提供一定的指导和帮助。

Operational Reliability in Transmission Power Grid

The paper presents the methods proposed by the authors to be applied in operation of substations. The substations taken in consideration were rehabilitated by replacing the existing equipments by new equipments, the last generation. The methods consist in study of equipment＇s failures, study of equipment＇s behaviour, study of substation architecture and study of systems operation. Paper presents new equipments on their architecture and performances. The parts of method exposed in this paper are based on the operational reliability. The mathematical methods and new analyses methods are given for resolving the issues on operation of substations. The results of this study will be used to obtain the best solution for operation of the substations. The results of the analysis were applied to some substation from the Transmission Power Grid.