浅谈影响电力电容器安全运行的因素及其选用与维护（Discussion on factors affecting safe operation of power capacitor and its selection and maintenance）.doc

浅谈影响电力电容器安全运行的因素及其选用与维护（Discussion on factors affecting safe operation of power capacitor and its selection and maintenance） Discussion on factors affecting safe operation of power capacitor and its selection and maintenance Author: zhangyap... Article source: this site original hits: 0 update time: 2010-5-28 20:16:03 [font: small big] Hubei safety production information network (safety production materials) looking for information A large number of power capacitors installed in the substation and line at all levels, is one of the main equipments in the power supply network, the main function of the capacitor in the electric power system is the reactive power compensation in power system and improve the power factor of system, improve the voltage quality, reduce line losses, improve the power grid power transmission capacity. 1 power capacitor selection In the selection of power capacitors, should be aimed at the environment, current and voltage, capacity and model selection of the following special conditions, using the special power capacitor accordingly, so as to prolong the service life of the capacitor, and can save money and provide good economic benefits. 1.1 substation reactive power compensation equipment preferred frame type capacitor, less assembling capacitor of the assembling capacitor may be due to the internal breakdown caused by three-phase capacitor unit capacitance unbalance, which led to the trip, if this is the case, on-site maintenance often do not have the conditions, coping methods can only return to factory repair or replace the capacitor group of new process, but this time is too long, have impact on system voltage. According to the assemble type capacitor while less maintenance but once the failure will cause the entire group out of operation, the impact of reactive power compensation system, therefore, the substation reactive power compensation equipment preferred frame type capacitor. 1.2, the cause of the environment directly affects the