CN103439619A - 一种防爆电器性能测试台 - Google Patents

一种防爆电器性能测试台 Download PDF

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CN103439619A
CN103439619A CN2013104180051A CN201310418005A CN103439619A CN 103439619 A CN103439619 A CN 103439619A CN 2013104180051 A CN2013104180051 A CN 2013104180051A CN 201310418005 A CN201310418005 A CN 201310418005A CN 103439619 A CN103439619 A CN 103439619A
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CN103439619B (zh
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高鹏
张涛
罗奕
唐焱
叶仿拥
蒋占四
张斌
陈金龙
高成
林伟通
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Ming Chuanghuiyuan(guizhou)
Mining Design and Research Institute Co.,Ltd.
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Guilin University of Electronic Technology
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Abstract

发明公开了一种防爆电器性能测试台,包括:三相分调式电压调整器通过delphi通信接口与三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块的输入端口相连接,固态继电器与数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块的输入端口相连接;上述所有模块的数据端口与RS485总线模块的数据端口相连,R485总线模块与PLC工控机相连;三相分调式电压调整器由PLC工控机运行调压软件控制。本发明具有包括器件温升等全参数测量功能,且能够提高电器各项参数检测的准确性。

Description

一种防爆电器性能测试台
技术领域
    本发明涉及矿用电器设备测试技术领域,具体涉及一种防爆电器性能测试台。
背景技术
煤矿井下用的电器都是防爆电器,例如电磁起动器、自耦减压起动器、馈电开关、防爆蜂鸣器、煤电钻等。由于煤矿井下工作环境较为恶劣,温差大、潮湿,经常发生漏电、短路等电气故障,容易引起煤矿瓦斯的爆炸,所以对防爆电器的保护性能要进行定期检查。
目前防爆电器测试台检测内容有短路、过载、欠压、漏电电阻、漏电闭锁、电容补偿等参数。总所周知,高压防爆电器在运行状态下就会发热,而现有测试台对器件在使用过程中的温升往往不能测量。
测试台对电器进行各项参数检测时,需要对三相测试电压进行设定和稳压。目前,各种测试台的稳压措施是取三相电源各相电压的平均值作为取样基准电压,也即采用三相统调式稳压器,由于三相电压存在不平衡,出现明显震荡现象,势必影响检测的准确性。
发明内容
针对现有技术的不足,本发明提供一种具有包括器件使用过程中的温升等全参数测量功能,并且大幅提高电器各项参数检测准确性的测试台。
本发明技术方案如下:
一种防爆电器性能测试台,包括三相测试电源输出装置,所述三相测试电源输出装置采用三相分调式电压调整器。
所述防爆电器性能测试台还包括固态继电器、PLC工控机、三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块、数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块和RS485总线模块;三相分调式电压调整器通过delphi通信接口与三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块的输入端口相连接,固态继电器与数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块的输入端口相连接;所述三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块、数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块的数据端口与RS485总线模块的数据端口相连,R485总线模块与PLC工控机相连。
所述三相分调式电压调整器由PLC工控机运行调压软件控制,该调压软件的逻辑步骤如下:
步骤1:设定基准电流I0
步骤2:测量三相测试电源的各相负载电流;
步骤3:比较基准电流I0和某相负载电流,如果该相负载电流大于基准电流I0的1.01倍,通过可调变压器对该相降压,如果该相负载电流小于基准电流I0的0.99倍,通过可调变压器对该相升压;
步骤4:重复步骤3,对另两相电压进行调整;
步骤5:重新测量各相负载电流并分别与基准电流I0相比较。如果各相负载电流都大于0.99倍的基准电流I0且小于1.01倍的基准电流I0时,电压调整结束,否则返回步骤2。
本发明的有益效果:
(1)本防爆电器性能测试台内部集成了温度采集模块,可以测量防爆电器运行中的温度变化,进行大电流温升试验,进一步保证煤矿生产的安全。
(2)本防爆电器性能测试台的三相测试电源采取各相分别独立调整的措施,以减小三相电压的平衡误差,明显减小震荡现象,提高对电器各项参数检测的准确性。
附图说明
    图1为防爆电器性能测试台电路结构示意图。
    图2为防爆电器性能测试台中的调压软件流程图。
具体实施方式
一种防爆电器性能测试台,包括三相分调式电压调整器、固态继电器、PLC工控机、三相电参数测量模块EDA9033、电压电流输入模块EDA9015、单相电参数测量模块EDA9011、温度采集模块EDA9018、数字量输入输出模块EDA9050、频率与脉冲计数模块EDA9083、继电器输入输出模块EDA9061和RS485总线模块;三相分调式电压调整器通过delphi串口通信与三相电参数测量模块EDA9033、电压电流输入模块EDA9015、单相电参数测量模块EDA9011、温度采集模块EDA9018的输入端口相连接,固态继电器与数字量输入输出模块EDA9050、频率与脉冲计数模块EDA9083、继电器输入输出模块EDA9061的输入端口相连接;上述所有模块的数据端口与RS485总线模块的数据端口相连,R485总线模块与PLC工控机相连。
所述三相分调式电压调整器由PLC工控机运行调压软件控制,该调压软件的逻辑步骤如下:
(1)设定基准电流I0
(2)测量三相测试电源(A相、B相、C相)的各相负载电流;
(3)比较基准电流I0和A相负载电流,如果该相负载电流大于基准电流I0的1.01倍,通过可调变压器对该相降压,如果该相负载电流小于基准电流I0的0.99倍,通过可调变压器对该相升压;
(4)比较基准电流I0和B相负载电流,如果该相负载电流大于基准电流I0的1.01倍,通过可调变压器对该相降压,如果该相负载电流小于基准电流I0的0.99倍,通过可调变压器对该相升压;
(5)比较基准电流I0和C相负载电流,如果该相负载电流大于基准电流I0的1.01倍,通过可调变压器对该相降压,如果该相负载电流小于基准电流I0的0.99倍,通过可调变压器对该相升压;
(6)重新测量A相、B相及C相的负载电流并分别与基准电流I0相比较。如果各相负载电流都大于0.99倍的基准电流I0且小于1.01倍的基准电流I0时,电压调整结束,否则返回步骤(2)。

Claims (3)

1.一种防爆电器性能测试台,包括三相测试电源输出装置,其特征在于:所述三相测试电源输出装置采用三相分调式电压调整器。
2.根据权利要求1所述防爆电器性能测试台,其特征在于:还包括固态继电器、PLC工控机、三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块、数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块和RS485总线模块;三相分调式电压调整器通过delphi通信接口与三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块的输入端口相连接,固态继电器与数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块的输入端口相连接;所述三相电参数测量模块、电压电流输入模块、单相电参数测量模块、温度采集模块、数字量输入输出模块、频率与脉冲计数模块、继电器输入输出模块的数据端口与RS485总线模块的数据端口相连,R485总线模块与PLC工控机相连;所述三相分调式电压调整器由PLC工控机运行调压软件所控制。
3.根据权利要求2所述防爆电器性能测试台,其特征在于:其中所述的调压软件的逻辑步骤如下:
步骤1:设定基准电流I0
步骤2:测量三相测试电源的各相负载电流;
步骤3:比较基准电流I0和某相负载电流,如果该相负载电流大于基准电流I0的1.01倍,通过可调变压器对该相降压,如果该相负载电流小于基准电流I0的0.99倍,通过可调变压器对该相升压;
步骤4:重复步骤3,对另两相电压进行调整;
步骤5:重新测量各相负载电流并分别与基准电流I0相比较;如果各相负载电流都大于0.99倍的基准电流I0且小于1.01倍的基准电流I0时,电压调整结束,否则返回步骤2。
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