浅析无功补偿在电力电网中应用

Analysis of Reactive Power Compensation Applications in Power Grid

怀远县地处蚌埠市西部,目前有一条220kV和三条110kV线路,与淮南、淮北发电系统连接,网内现有一座220kV变电站、四座110kV变电站和15座35kV变电站,年供电量约为4.5亿kWh。由于境内淮河及支流较多,没有库容调节,遇到旱季和雨水季节需要进行抗旱和排涝,网内无功急剧增加。在现代供电企业中,功率因数是考核电网运行的重要指标之一,为完成功率因数的考核指标,保证电网供电的经济运行,无功补偿就显得尤为重要。本文结合县级供电网络的运行状况和无功补偿的特点,从电力无功补偿的基本原理、补偿方式、运行管理及实际应用几个方面进行分析,阐述无功补偿在电力电网中应用的意义和作用。

Huaiyuan is located in the western of Bengbu City.There are a 220kV and three 110kV lines connecting to Huainan and Huaibei power system.A 220kV substation,four 110kV substations and fifteen 35kV substations exist in grid,and power supply volume of one year is about 450 million kWh.As the Huaihe River and its tributaries more in the territory,no capacity adjustment,drought resisting and drainage in the dry season and rain season,the reactive power increases dramatically in grid.In the modern power supply companies,power factor is an important indicator of the assessment of power grid.In order to complete the assessment indicator of power factor and ensure the economic operation of power supply,reactive power compensation is particularly important.In this paper,combining the operation conditions of county power network and the characteristics of reactive power compensation,the basic principles of compensation,compensation mode,operation management and the practical application are analyzed,and the significance and effects of reactive power compensation applications in the power grid are expounded.