熔断器预热转换装置的设计及其分断能力验证
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摘要
针对在大容量试验室进行熔断器分断能力试验测试过程中,因设备因素的限制存在试验时间不能满足分断能力测试要求的缺陷,该文设计预热转换装置中的低压大电流装置、转换高压装置、预热转换器3个重要部分,提出运用PLC+PC的自动控制方法监控和操作预热转换过程。测试结果表明:设计装置使得熔断器分断能力试验过程为40 s,控制在30～45 s内,满足分断能力测试的要求,并且实现全程自动控制,降低试验设备被烧毁的风险,提高试验成功率,降低试验成本。
In order to solve the defect that the time was limited by equipment of breaking capacity test on fuse in the large-capacity laboratory, three importance parts of fuse preheating conversion device, large current lowvoltage device, conversion high pressure device and preheating conversion device were designed respectively,then use PLC+PC monitoring/operation to complete the preheating conversion program. The test results showed that the test time of the designed devices reach to 40 s could meet the requirements: 30 s to 45 s, the designed devices realized the whole process automatic control, reduced the risk of the test equipment being burned, improved the test success rate and reduce the test cost.
In order to solve the defect that the time was limited by equipment of breaking capacity test on fuse in the large-capacity laboratory, three importance parts of fuse preheating conversion device, large current lowvoltage device, conversion high pressure device and preheating conversion device were designed respectively,then use PLC+PC monitoring/operation to complete the preheating conversion program. The test results showed that the test time of the designed devices reach to 40 s could meet the requirements: 30 s to 45 s, the designed devices realized the whole process automatic control, reduced the risk of the test equipment being burned, improved the test success rate and reduce the test cost.
引文
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[11]区洁珍,马啟田,张涛.熔断器分断能力验证方法分析[J].江西化工,2016(3):101-103.
[2]戴超,庄劲武,杨锋,等.高压混合型限流熔断器用电弧触发器的弧前特性[J].高电压技术,2010,36(2):350-355.
[3]陈搏,庄劲武,肖翼洋,等.10kV/2kA混合型限流熔断器用电弧触发器的分析与设计[J].高电压技术,2012,38(8):1948-1955.
[4]韦强.短路电流计算及断路器分断能力的选择[J].电世界,2003(6):12-14.
[5]项建新,齐忠毅.同步控制断路器系统在低压电器试验站的应用[J].低压电器,2008(3):58-62.
[6]陆辉.低压断路器分断能力校验的简化方法[J].电气应用,2013(18):57-59.
[7]丁永生.论低压开关设备内断路器分断能力的合理选用[J].机电信息,2009(24):44-46.
[8]赵亚明,王晶.PC+PLC在超高压大容量试验室的应用[J].自动化与仪表,2003(6):45-47.
[9]贾永岐,刘伟,张明莉.复合变比TA高压智能转换装置的降损应用[J].华东电力,2011(4):24-25.
[10]陈搏,庄劲武,王晨,等.直流熔断器短路分断试验的等效方法研究[J].电力系统保护与控制,2013(11):93-98.
[11]区洁珍,马啟田,张涛.熔断器分断能力验证方法分析[J].江西化工,2016(3):101-103.