CN106646209B - Intelligent testing equipment for high-temperature and low-temperature tripping of charge control circuit breaker - Google Patents
Intelligent testing equipment for high-temperature and low-temperature tripping of charge control circuit breaker Download PDFInfo
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- CN106646209B CN106646209B CN201610928633.8A CN201610928633A CN106646209B CN 106646209 B CN106646209 B CN 106646209B CN 201610928633 A CN201610928633 A CN 201610928633A CN 106646209 B CN106646209 B CN 106646209B
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Abstract
Description
技术领域Technical field
本发明涉及一种断路器脱扣测试装置，尤其是一种费控断路器高、低温脱扣智能测试设备，属于测试装置技术领域。The invention relates to a circuit breaker tripping test device, in particular to a cost-controlled circuit breaker high and low temperature tripping intelligent testing equipment, which belongs to the technical field of testing devices.
背景技术Background technique
低压断路器，是一种不仅可以接通和分断正常负荷电流和过负荷电流，还可以接通和分断短路电流的开关电器。断路器在合闸过程中的任何时刻，若保护动作接通跳闸回路，断路器能可靠地断开，被称为自由脱扣。带有自由脱扣功能的断路器，可以保证断路器合于短路故障时，能迅速断开，避免扩大事故范围。断路器的脱扣器类型分为过电流脱扣器、欠电压脱扣器、分励脱扣器等。低压断路器在电路中除起控制作用外，还具有一定的保护脱扣，如负荷、短路、欠压和漏电等。根据我国供电网络智能化的需求，国家电网公司要求供电网络智能化。因此需要供电网络的终端执行机构——费控断路器执行上端信号具备跳闸、合闸脱扣功能。因此低压费控断路器目前的发展趋势是除了具备传统的手动分合闸及过流过载自动脱扣外，还需要具有电动分合闸，以及实现远程控制；尤其是结合电能表，实现欠费自动跳闸断电和充费自动合闸电等脱扣功能，这就对费控断路器提出更高的要求。断路器在合闸过程中的任何时刻，若保护动作接通跳闸回路，断路器能可靠地断开，被称为脱扣。带有脱扣功能的断路器，可以保证断路器合于短路故障时，能迅速断开，避免扩大事故范围。断路器的脱扣器类型分为过电流脱扣器、欠电压脱扣器、分励脱扣器等。Low-voltage circuit breaker is a switching appliance that can not only connect and break normal load current and overload current, but also connect and break short-circuit current. At any time during the closing process of the circuit breaker, if the protective action connects the tripping circuit, the circuit breaker can be reliably disconnected, which is called free tripping. A circuit breaker with a free trip function can ensure that the circuit breaker can be disconnected quickly when a short circuit fault occurs to avoid expanding the scope of the accident. The types of circuit breaker releases are divided into overcurrent releases, undervoltage releases, shunt releases, etc. In addition to playing a control role in the circuit, the low-voltage circuit breaker also has certain protective tripping functions, such as load, short circuit, undervoltage and leakage. According to the demand for intelligentization of my country's power supply network, the State Grid Corporation of China requires the intelligentization of the power supply network. Therefore, it is necessary for the terminal actuator of the power supply network - the cost-controlled circuit breaker to execute the upper signal to have the functions of tripping, closing and tripping. Therefore, the current development trend of low-voltage fee-controlled circuit breakers is that in addition to the traditional manual opening and closing and overcurrent and overload automatic tripping, they also need to have electric opening and closing, as well as remote control; especially in combination with electric energy meters, to realize arrears. Trip functions such as automatic tripping and power-off and charging and automatic closing of power put forward higher requirements for cost-controlled circuit breakers. At any time during the closing process of the circuit breaker, if the protective action connects the tripping circuit, the circuit breaker can be reliably disconnected, which is called tripping. A circuit breaker with a tripping function can ensure that the circuit breaker can be disconnected quickly when a short circuit fault occurs to avoid expanding the scope of the accident. The types of circuit breaker releases are divided into overcurrent releases, undervoltage releases, shunt releases, etc.
为了保证断路器的产品质量，断路器出厂时必须用标准特性试验台对小型断路器在1.13倍额定电流、约定时间的低倍试验电流和1.45倍额定电流、约定时间的高倍试验电流下的时间—电流保护特征进行检测校验，传统的小型断路器标准特性试验台有的通过一个试验电源由次级并联输出各试验单元的试验电流，试验时间的切换由时间继电器控制，有的亦按试验单元设置试验电源，但普遍使用50赫交流低压源，靠大功率晶体管组成推挽输出试验电流。传统的标准特性试验台存在测试功能分散、集成度低、测试***内部存在不协调的缺陷等问题，故障率较高；由于费控断路器这种内部包括电子、机械结构的特殊性，在高温、低温条件下都会对其脱扣特性有很大影响；同时需要较多的人工干预，很难满足现代费控断路器测试要求。In order to ensure the product quality of the circuit breaker, when the circuit breaker leaves the factory, it must use a standard characteristic test bench to test the small circuit breaker under the low test current of 1.13 times the rated current and the agreed time and the high test current of 1.45 times the rated current and the agreed time. —The current protection characteristics are tested and verified. Some of the traditional small circuit breaker standard characteristic test benches output the test current of each test unit through a test power supply and the secondary parallel connection. The switching of the test time is controlled by a time relay, and some are also based on the test. The unit is equipped with a test power supply, but a 50 Hz AC low-voltage source is generally used, and a push-pull output test current is formed by high-power transistors. The traditional standard characteristic test bench has problems such as scattered test functions, low integration, and uncoordinated defects within the test system, and has a high failure rate. Due to the particularity of the cost-controlled circuit breaker, which includes electronic and mechanical structures, it is difficult to operate at high temperatures. , will have a great impact on its tripping characteristics under low temperature conditions; at the same time, it requires more manual intervention, and it is difficult to meet the testing requirements of modern cost-controlled circuit breakers.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种费控断路器高、低温脱扣智能测试设备，解决现有标准特性试验台的高、低温脱扣测试功能分离、测试***内部存在不协调的缺陷等问题，简化操作步骤。The technical problem to be solved by the present invention is to provide a cost-controlled circuit breaker intelligent test equipment for high and low temperature tripping, which solves the defects of separation of high and low temperature tripping test functions of the existing standard characteristic test bench and uncoordinated defects within the test system. problem and simplify the steps.
为了解决上述技术问题，本发明提供了一种费控断路器高、低温脱扣智能测试设备，包括接线柜与控制柜，所述接线柜与控制柜部分相互独立，且通过柜间信号线相连；In order to solve the above technical problems, the present invention provides an intelligent test equipment for high and low temperature tripping of a cost-controlled circuit breaker, which includes a wiring cabinet and a control cabinet. The wiring cabinet and the control cabinet are partially independent of each other and are connected through signal lines between cabinets. ;
所述接线柜包括工位工装夹具、标准试验导线、温度传感器与温度传感导线；所述工位工装夹具设于所述柜体的外表面，用于固定被测断路器；所述标准试验导线与所述柜间信号线相连，用于发送或接收被测断路器的测试信号；所述温度传感器通过温度传感导线与所述柜间信号线相连，用于感知被测断路器的温度，并将温度信息发送至所述控制柜；The wiring cabinet includes a workstation fixture, a standard test wire, a temperature sensor and a temperature sensing wire; the workstation fixture is located on the outer surface of the cabinet and is used to fix the circuit breaker under test; the standard test The wire is connected to the signal line between cabinets and is used to send or receive the test signal of the circuit breaker under test; the temperature sensor is connected to the signal line between cabinets through a temperature sensing wire and is used to sense the temperature of the circuit breaker under test. , and send the temperature information to the control cabinet;
所述控制柜包括试验单元、工控电脑、启停按钮与试验电源；The control cabinet includes a test unit, an industrial control computer, a start-stop button and a test power supply;
所述试验单元与所述柜间信号线相连，用于提供断路器脱扣测试所需的电学信号；The test unit is connected to the signal line between the cabinets and is used to provide the electrical signals required for the circuit breaker tripping test;
所述工控电脑与试验单元的通信模块相连，用于发送控制信号至试验单元，或接收试验单元传来的试验数据；The industrial control computer is connected to the communication module of the test unit and is used to send control signals to the test unit or receive test data from the test unit;
所述启停按钮设置在所述控制柜的外表面，用于将操作者输入的启停指令发送至所述工控电脑；The start-stop button is provided on the outer surface of the control cabinet and is used to send the start-stop instructions input by the operator to the industrial control computer;
所述试验电源与所述试验单元相连，用于提供试验单元所需的工作电压或工作电流。The test power supply is connected to the test unit and used to provide the operating voltage or operating current required by the test unit.
所述接线柜由骨架搭建并支撑，且表面通过面板封闭。The wiring cabinet is built and supported by a skeleton, and its surface is closed by panels.
所述控制柜由骨架搭建并支撑，且表面通过面板封闭。The control cabinet is built and supported by a skeleton, and its surface is closed by panels.
所述控制柜设有触摸屏，且设置在控制柜的外表面，并与工控电脑相连；所述触摸屏提供可通过触摸输入基本设置信息的操作界面，并将基本设置信息传送至所述工控电脑，工控电脑将被测断路器的实时状态通过触摸屏显示。The control cabinet is equipped with a touch screen, which is arranged on the outer surface of the control cabinet and connected to the industrial control computer; the touch screen provides an operation interface for inputting basic setting information through touch, and transmits the basic setting information to the industrial control computer. The industrial control computer displays the real-time status of the circuit breaker under test through the touch screen.
所述工控电脑内设有可编程控制器PLC。The industrial control computer is equipped with a programmable controller PLC.
所述试验单元包括保护开关、升流器、互感器、恒流源、计时仪、电压功耗采集模块、多路温升巡检仪；The test unit includes a protective switch, a current riser, a transformer, a constant current source, a timer, a voltage and power consumption acquisition module, and a multi-channel temperature rise inspection instrument;
所述保护开关设于试验单元的外侧，用于控制整个试验单元电路的通断，防止因测试装置异常导致的试验单元或被测断路器的损坏；The protection switch is located outside the test unit and is used to control the on-off of the entire test unit circuit to prevent damage to the test unit or the circuit breaker under test due to abnormalities in the test device;
所述升流器并联于保护开关，用于校验电流互感器变比；The current booster is connected in parallel to the protection switch and is used to verify the current transformer ratio;
所述互感器与升流器的输出端相连，用于量测与保护试验单元；The transformer is connected to the output end of the current booster and is used to measure and protect the test unit;
所述恒流源的第一接口与保护开关相连，第二接口与升流器相连，第三接口与互感器相连，第四接口与计时仪、电压功耗采集模块、多路温升巡检仪相连；所述恒流源用于提供试验单元内各个部件的基础电流；The first interface of the constant current source is connected to the protection switch, the second interface is connected to the current riser, the third interface is connected to the transformer, and the fourth interface is connected to the timer, voltage and power consumption acquisition module, and multi-channel temperature rise inspection connected to the instrument; the constant current source is used to provide the basic current of each component in the test unit;
所述计时仪与恒流源的第四接口相连，用于测试时间的记录；The timer is connected to the fourth interface of the constant current source and is used for recording test time;
所述电压功耗采集模块与恒流源的第四接口相连，用于试验过程中被测断路器的功耗的采集；The voltage and power consumption acquisition module is connected to the fourth interface of the constant current source and is used to collect the power consumption of the circuit breaker under test during the test;
所述多路温升巡检仪与恒流源的第四接口相连，用于试验过程中被测断路器温度的记录和显示。The multi-channel temperature rise inspection instrument is connected to the fourth interface of the constant current source and is used for recording and displaying the temperature of the circuit breaker under test during the test.
所述试验电源由可变频电流源构成，通过所述工控电脑设定档位、时间、倍数，并对试验电源进行校准。The test power supply is composed of a variable frequency current source, and the gear, time, and multiple are set through the industrial control computer, and the test power supply is calibrated.
所述工位工装夹具设有压接手柄。The workstation fixture is provided with a crimping handle.
本发明的接线柜采用骨架与面板搭建，提高了设备的结构稳定性。The wiring cabinet of the present invention is built with a frame and a panel, which improves the structural stability of the equipment.
本发明的控制柜采用骨架与面板搭建，提高了设备的结构稳定性。The control cabinet of the present invention is built with a skeleton and a panel, which improves the structural stability of the equipment.
本发明设有可编程控制器PLC，PLC上载有PID软件控制程式，以加快测试过程，精准控制测试电压或电流的频率、幅度、相位，有利于提高测试精度。The invention is equipped with a programmable controller PLC, which is loaded with a PID software control program to speed up the test process and accurately control the frequency, amplitude and phase of the test voltage or current, which is beneficial to improving test accuracy.
本发明在控制柜上设有触摸屏，完成测试基本设置和测试状态的实时显示，操作方便，人机交互性较好。The invention is equipped with a touch screen on the control cabinet to complete the basic test settings and real-time display of the test status, is easy to operate, and has good human-computer interaction.
本发明的试验单元具有完成断路器高、低温脱扣测试的通用结构，具有较好的功能拓展性与兼容性。The test unit of the present invention has a universal structure for completing high and low temperature tripping tests of circuit breakers, and has good function expansion and compatibility.
本发明的试验单元内设有保护开关，自动控制整个试验单元电路的通断，防止因测试装置异常导致的试验单元或被测断路器的损坏。The test unit of the present invention is equipped with a protective switch to automatically control the on and off of the entire test unit circuit to prevent damage to the test unit or the circuit breaker under test due to abnormalities in the test device.
本发明选用变频电流源作为试验电源，可以根据试验需要选择不同的档位、时间、倍数，有利于提高测试精度、增强本发明的兼容性。The present invention uses a variable frequency current source as the test power source, and can select different gears, times, and multiples according to test needs, which is beneficial to improving test accuracy and enhancing the compatibility of the present invention.
本发明的工位工装夹具设有压接手柄，方便被测断路器的固定与取出。The workstation fixture of the present invention is provided with a crimping handle to facilitate the fixation and removal of the circuit breaker under test.
本发明将接线柜与控制柜相结合，结构简单、操作方便，人机交互性与自动化程度较高，集成高、低温脱扣测试功能于一体：瞬时脱扣性能试验、短路脱扣性能试验、高温脱扣试验、低温脱扣试验等；并支持不同型号断路器的测试，具有提高测试速度与测试精度、保护被测断路器等作用。The invention combines the wiring cabinet and the control cabinet, has a simple structure, is easy to operate, has a high degree of human-computer interaction and automation, and integrates high and low temperature tripping test functions into one: instantaneous tripping performance test, short circuit tripping performance test, High temperature tripping test, low temperature tripping test, etc.; and supports testing of different types of circuit breakers, which has the functions of improving test speed and test accuracy, and protecting the circuit breaker under test.
附图说明Description of drawings
图1为本发明的接线柜外部结构图；图2为本发明的控制柜外部结构图；图3为本发明所述试验单元的内部结构线路图；Figure 1 is an external structural diagram of the wiring cabinet of the present invention; Figure 2 is an external structural diagram of the control cabinet of the present invention; Figure 3 is an internal structural circuit diagram of the test unit of the present invention;
图中：1.接线柜，2. 工位工装夹具，3.绝缘板，4.控制柜，5.触摸屏，6.启停按钮，7.保护开关，8. 升流器，9.互感器，10. 试验单元的输出端，11. 恒流源，12. 计时仪，13.电压功耗采集模块，14. 多路温升巡检仪，15.通信模块。In the picture: 1. Wiring cabinet, 2. Work station fixture, 3. Insulation board, 4. Control cabinet, 5. Touch screen, 6. Start and stop button, 7. Protection switch, 8. Current booster, 9. Transformer , 10. The output end of the test unit, 11. Constant current source, 12. Timer, 13. Voltage and power consumption acquisition module, 14. Multi-channel temperature rise inspection instrument, 15. Communication module.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步说明，以使本领域的技术人员可以更好地理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The present invention will be further described below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand and implement the present invention, but the examples are not intended to limit the present invention.
实施例1：Example 1:
参照附图1与附图2，本实施例主要由接线柜1与控制柜4组成，接线柜1与控制柜4为两个独立柜体，通过柜间信号线相连；控制柜4将测试信号通过柜间信号线发送至接线柜1，接线柜1将被测断路器的状态信号通过柜间信号线发送至控制柜4。接线柜1与控制柜4的柜体采用铝合金型材骨架搭建并支撑，柜体表面用不锈钢面板封闭。接线部分包括十五个工位工装夹具2、绝缘板3、十五根标准试验导线、十五个温度传感器与十五根温度传感导线；其中绝缘板3设置在接线柜1的外侧面板，工位工装夹具2设于绝缘板3上；标准试验导线设于绝缘板3内，并与柜间信号线相连；工位工装夹具2用于将被测断路器固定在接线柜1上，绝缘板3用于防止接线柜1的漏电，标准试验导线用于将测试信号传输至被测断路器。温度传感器通过温度传感导线与柜间信号线相连，用于感知被测断路器的实时温度。控制部分包括十五个试验单元、工控电脑、触摸屏5、启停按钮6与十个可变频电流源。选定其中一个试验单元的输出端10与柜间信号线相连；工控电脑与试验单元的通信模块15建立连接；启停按钮6设置在控制柜的外侧面板上，并通过启停信号线与工控电脑相连。选定其中一个可变频电流源通过试验电源线与试验单元相连，可变频电流源通过电源指令线与工控电脑相连。触摸屏5设置在控制柜4的外侧面板上，并与工控电脑的人机接口相连。工控电脑内设有可编程控制器PLC，PLC上载有PID软件控制程式，用于控制测试信号的输出。参照附图3，每个试验单元由电学器件及其连接导线构成，包括保护开关7、升流器8、互感器9、恒流源11、计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15。保护开关7设于试验单元的外侧，用于控制整个试验单元电路的通断，防止因测试装置异常导致的试验单元或被测断路器的损坏。升流器8并联于保护开关7，用于校验电流互感器9变比；互感器9与升流器8的输出端相连，用于量测与保护试验单元。恒流源11的第一接口与保护开关7相连，恒流源11的第二接口与升流器8相连，恒流源11的第三接口与互感器9相连，恒流源11的第四接口与计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15相连。恒流源11用于提供试验单元内各个部件的基础电流；计时仪12用于测试时间的记录；电压功耗采集模块13用于试验过程中被测断路器的功耗的采集；多路温升巡检仪14用于试验过程中被测断路器温度的记录和显示。本实施例中所有的输入输出接口均采用RS-232通信标准。Referring to Figures 1 and 2, this embodiment mainly consists of a wiring cabinet 1 and a control cabinet 4. The wiring cabinet 1 and the control cabinet 4 are two independent cabinets, connected through signal lines between cabinets; the control cabinet 4 transmits the test signal It is sent to the wiring cabinet 1 through the inter-cabinet signal line, and the wiring cabinet 1 sends the status signal of the circuit breaker under test to the control cabinet 4 through the inter-cabinet signal line. The cabinets of the wiring cabinet 1 and the control cabinet 4 are built and supported by aluminum alloy profile frames, and the cabinet surfaces are closed with stainless steel panels. The wiring part includes fifteen workstation fixtures 2, insulating plates 3, fifteen standard test wires, fifteen temperature sensors and fifteen temperature sensing wires; the insulating plate 3 is set on the outer panel of the wiring cabinet 1. The work station fixture 2 is set on the insulating plate 3; the standard test wire is set in the insulating plate 3 and connected to the signal line between cabinets; the work station fixture 2 is used to fix the circuit breaker under test on the wiring cabinet 1, insulating Board 3 is used to prevent leakage of wiring cabinet 1, and standard test wires are used to transmit test signals to the circuit breaker under test. The temperature sensor is connected to the signal line between cabinets through a temperature sensing wire and is used to sense the real-time temperature of the circuit breaker under test. The control part includes fifteen test units, industrial control computers, touch screens 5, start and stop buttons 6 and ten variable frequency current sources. The output end 10 of one of the test units is selected and connected to the signal line between the cabinets; the industrial control computer establishes a connection with the communication module 15 of the test unit; the start and stop button 6 is set on the outer panel of the control cabinet and communicates with the industrial control through the start and stop signal line. Computer connected. Select one of the variable frequency current sources to be connected to the test unit through the test power cord, and the variable frequency current source is connected to the industrial control computer through the power command line. The touch screen 5 is arranged on the outer panel of the control cabinet 4 and is connected to the human-machine interface of the industrial control computer. The industrial control computer is equipped with a programmable controller PLC, and the PLC is loaded with a PID software control program to control the output of test signals. Referring to Figure 3, each test unit is composed of electrical devices and their connecting wires, including a protective switch 7, a current booster 8, a transformer 9, a constant current source 11, a timer 12, a voltage and power consumption acquisition module 13, and a multi-channel Temperature rise inspection instrument 14, communication module 15. The protection switch 7 is located outside the test unit and is used to control the on-off of the entire test unit circuit to prevent damage to the test unit or the circuit breaker under test due to abnormalities in the test device. The current booster 8 is connected in parallel to the protection switch 7 and is used to verify the transformation ratio of the current transformer 9; the transformer 9 is connected to the output end of the current booster 8 and is used to measure and protect the test unit. The first interface of the constant current source 11 is connected to the protection switch 7 , the second interface of the constant current source 11 is connected to the current booster 8 , the third interface of the constant current source 11 is connected to the transformer 9 , and the fourth interface of the constant current source 11 is connected to the transformer 9 . The interface is connected to the timer 12, the voltage and power consumption acquisition module 13, the multi-channel temperature rise inspection instrument 14, and the communication module 15. The constant current source 11 is used to provide the basic current of each component in the test unit; the timer 12 is used to record the test time; the voltage and power consumption acquisition module 13 is used to collect the power consumption of the circuit breaker under test during the test; the multi-channel temperature The inspection instrument 14 is used to record and display the temperature of the circuit breaker under test during the test. All input and output interfaces in this embodiment adopt the RS-232 communication standard.
本发明工作流程如下：首先，将设备放置在温度变化范围为-40℃-85℃的可调高低温交变温箱中。每个工位按照2P开关接线方式，工位之间为并联方式接线，开关两极之间电流采用串联方式。电流采用各极串联方式引入，满足最大1.45倍额定电流的测试；开关采用上下安装，电流出线下端采用底部固定铜触头及银点结构，每极铜触头端头压接部位开口，接入温度传感器。根据被测断路器的规格、型号，调整工位工装夹具2，使得被测断路器恰好放入接线柜1的测试工位并由压接手柄固定。根据被测断路器的规格、型号，选择相应的标准试验导线，并与被测断路器的信号端相连；将温度传感器固定于被测断路器的表面。操作者通过触摸屏5输入试验基本设置信息；根据被测断路器的额定电流和校验倍数，从十个可变频电流源中选出最合适的一个并校准，随后设置试验需要的档位、时间、倍数。工控电脑根据触摸屏5发送过来的基本设置信息自动对内部环境进行相应配置，并设置箱内温度为-40℃，进行断路器低温脱扣测试。操作者按下启停按钮6后，试验开始，启停指令被发送至工控电脑，同时可变频电流源向试验单元输出设定的工作电流；工控电脑向试验单元的通信模块15发送实时控制信息，试验单元向被测断路器发送初始最小测试信号。试验单元内恒流源11的输出接通升流器8，升流器8输出经过互感器9来改变电流大小；互感器9的输出端（二次回路）接通恒流源11的5A电流信号。被测断路器的动作信号通过标准试验导线与柜间信号线至工控电脑，被测断路器的温度信息通过温度传感器感知并发送至多路温升巡检仪14；工控电脑同时将被测断路器的实时状态通过触摸屏5显示。在1.13倍以及1.13倍以下额定电流的激励下，如果被测断路器出现脱扣动作信号，则结束当前测试，记录该被测断路器“早跳不合格”，并将测试结果通过触摸屏5输出。在1.13倍至1.45倍之间的额定电流的激励下，如果被测断路器出现脱扣动作信号，则该被测断路器测试合格，工控电脑把当前的测试信号与基本测试信息记录后结束当前测试，并将测试结果通过触摸屏5输出。如果被测断路器未出现脱扣动作信号，则工控电脑向试验单元发送新的控制信息，试验单元向被测断路器发送下一级测试信号（按一定增量加大输出的电流），重复上述步骤，直至被测断路器出现脱扣动作信号。如果试验单元已将测试信号（电流）增加到1.45倍额定电流，被测断路器始终没有出现脱扣动作信号，则结束当前测试，记录该被测断路器“晚跳不合格”，并将测试结果通过触摸屏5输出。测试时由于外界因素（如气温等）所造成断路器动作误差时，应根据实际情况对测试结果予以修正。测试结束后，试验台会自动将测试结果保存到数据库中。接着操作者重复本实施例步骤，进行下一个测试。The working process of the present invention is as follows: first, place the equipment in an adjustable high and low temperature alternating temperature box with a temperature range of -40°C to 85°C. Each workstation follows the 2P switch wiring method. The workstations are connected in parallel, and the current between the two poles of the switch is connected in series. The current is introduced through each pole in series to meet the test of a maximum of 1.45 times the rated current; the switch is installed up and down, and the lower end of the current outlet adopts a bottom-fixed copper contact and silver point structure. The crimping part of each pole's copper contact end is open for access. Temperature Sensor. According to the specification and model of the circuit breaker under test, adjust the station fixture 2 so that the circuit breaker under test is placed exactly into the test station of the wiring cabinet 1 and is fixed by the crimping handle. According to the specification and model of the circuit breaker under test, select the corresponding standard test wire and connect it to the signal end of the circuit breaker under test; fix the temperature sensor on the surface of the circuit breaker under test. The operator inputs the basic test setting information through the touch screen 5; according to the rated current and calibration multiple of the circuit breaker under test, the most appropriate one is selected from ten variable frequency current sources and calibrated, and then the gear and time required for the test are set. ,multiple. The industrial control computer automatically configures the internal environment accordingly based on the basic setting information sent by the touch screen 5, and sets the temperature inside the box to -40°C to conduct a low-temperature trip test of the circuit breaker. After the operator presses the start-stop button 6, the test starts. The start-stop command is sent to the industrial control computer. At the same time, the variable frequency current source outputs the set working current to the test unit; the industrial control computer sends real-time control information to the communication module 15 of the test unit. , the test unit sends an initial minimum test signal to the circuit breaker under test. The output of the constant current source 11 in the test unit is connected to the current booster 8, and the output of the current booster 8 passes through the transformer 9 to change the current size; the output end (secondary circuit) of the transformer 9 is connected to the 5A current of the constant current source 11 Signal. The action signal of the circuit breaker under test is sent to the industrial control computer through the standard test wire and the signal line between the cabinets. The temperature information of the circuit breaker under test is sensed by the temperature sensor and sent to the multi-channel temperature rise inspection instrument 14; the industrial control computer simultaneously records the circuit breaker under test The real-time status is displayed through the touch screen 5. Under the excitation of 1.13 times or less than 1.13 times the rated current, if the circuit breaker under test displays a tripping action signal, the current test will be ended, the "early trip failure" of the circuit breaker under test will be recorded, and the test results will be output through the touch screen 5 . Under the excitation of a rated current between 1.13 times and 1.45 times, if the circuit breaker under test displays a tripping action signal, the circuit breaker under test passes the test. The industrial control computer records the current test signal and basic test information and ends the current test. Test and output the test results through the touch screen 5. If the circuit breaker under test does not show a tripping action signal, the industrial control computer sends new control information to the test unit, and the test unit sends the next level test signal to the circuit breaker under test (increases the output current by a certain increment), and repeats Follow the above steps until the circuit breaker under test displays a tripping action signal. If the test unit has increased the test signal (current) to 1.45 times the rated current, and the circuit breaker under test never shows a tripping action signal, the current test will be ended, the circuit breaker under test will be recorded as "late trip failure", and the test will be The results are output via the touch screen 5. When the circuit breaker operation error is caused by external factors (such as temperature, etc.) during testing, the test results should be corrected according to the actual situation. After the test is completed, the test bench will automatically save the test results to the database. Then the operator repeats the steps of this embodiment and performs the next test.
实施例2：Example 2:
参照附图1与附图2，本实施例主要由接线柜1与控制柜4组成，接线柜1与控制柜4为两个独立柜体，通过柜间信号线相连；控制柜4将测试信号通过柜间信号线发送至接线柜1，接线柜1将被测断路器的状态信号通过柜间信号线发送至控制柜4。接线柜1与控制柜4的柜体采用铝合金型材骨架搭建并支撑，柜体表面用不锈钢面板封闭。接线部分包括十五个工位工装夹具2、绝缘板3、十五根标准试验导线、十五个温度传感器与十五根温度传感导线；其中绝缘板3设置在接线柜1的外侧面板，工位工装夹具2设于绝缘板3上；标准试验导线设于绝缘板3内，并与柜间信号线相连；工位工装夹具2用于将被测断路器固定在接线柜1上，绝缘板3用于防止接线柜1的漏电，标准试验导线用于将测试信号传输至被测断路器。温度传感器通过温度传感导线与柜间信号线相连，用于感知被测断路器的实时温度。控制部分包括十五个试验单元、工控电脑、触摸屏5、启停按钮6与十个可变频电流源。选定其中一个试验单元的输出端10与柜间信号线相连；工控电脑与试验单元的通信模块15相连；启停按钮6设置在控制柜的外侧面板上，通过启停信号线与工控电脑相连。选定其中一个可变频电流源通过试验电源线与试验单元相连，可变频电流源通过电源指令线与工控电脑相连。触摸屏5设置在控制柜4的外侧面板上，并与工控电脑的人机接口相连。工控电脑内设有数字信号处理器DSP，DSP上载有PID软件控制程式，用于控制测试信号的输出。参照附图3，每个试验单元由电学器件及其连接导线构成，包括保护开关7、升流器8、互感器9、恒流源11、计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15。保护开关7设于试验单元的外侧，用于控制整个试验单元电路的通断，防止因测试装置异常导致的试验单元或被测断路器的损坏。升流器8并联于保护开关7，用于校验电流互感器9变比；互感器9与升流器8的输出端相连，用于量测与保护试验单元。恒流源11的第一接口与保护开关7相连，恒流源11的第二接口与升流器8相连，恒流源11的第三接口与互感器9相连，恒流源11的第四接口与计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15相连。恒流源11用于提供试验单元内各个部件的基础电流；计时仪12用于测试时间的记录；电压功耗采集模块13用于试验过程中被测断路器的功耗的采集；多路温升巡检仪14用于试验过程中被测断路器温度的记录和显示。本实施例中所有的输入输出接口均采用RS-485通信标准。Referring to Figures 1 and 2, this embodiment mainly consists of a wiring cabinet 1 and a control cabinet 4. The wiring cabinet 1 and the control cabinet 4 are two independent cabinets, connected through signal lines between cabinets; the control cabinet 4 transmits the test signal It is sent to the wiring cabinet 1 through the inter-cabinet signal line, and the wiring cabinet 1 sends the status signal of the circuit breaker under test to the control cabinet 4 through the inter-cabinet signal line. The cabinets of the wiring cabinet 1 and the control cabinet 4 are built and supported by aluminum alloy profile frames, and the cabinet surfaces are closed with stainless steel panels. The wiring part includes fifteen workstation fixtures 2, insulating plates 3, fifteen standard test wires, fifteen temperature sensors and fifteen temperature sensing wires; the insulating plate 3 is set on the outer panel of the wiring cabinet 1. The work station fixture 2 is set on the insulating plate 3; the standard test wire is set in the insulating plate 3 and connected to the signal line between cabinets; the work station fixture 2 is used to fix the circuit breaker under test on the wiring cabinet 1, insulating Board 3 is used to prevent leakage of wiring cabinet 1, and standard test wires are used to transmit test signals to the circuit breaker under test. The temperature sensor is connected to the signal line between cabinets through a temperature sensing wire and is used to sense the real-time temperature of the circuit breaker under test. The control part includes fifteen test units, industrial control computers, touch screens 5, start and stop buttons 6 and ten variable frequency current sources. The output end 10 of one of the selected test units is connected to the signal line between the cabinets; the industrial control computer is connected to the communication module 15 of the test unit; the start and stop button 6 is set on the outer panel of the control cabinet and is connected to the industrial control computer through the start and stop signal line. . Select one of the variable frequency current sources to be connected to the test unit through the test power cord, and the variable frequency current source is connected to the industrial control computer through the power command line. The touch screen 5 is arranged on the outer panel of the control cabinet 4 and is connected to the human-machine interface of the industrial control computer. The industrial control computer is equipped with a digital signal processor DSP, and the DSP is loaded with a PID software control program to control the output of the test signal. Referring to Figure 3, each test unit is composed of electrical devices and their connecting wires, including a protective switch 7, a current booster 8, a transformer 9, a constant current source 11, a timer 12, a voltage and power consumption acquisition module 13, and a multi-channel Temperature rise inspection instrument 14, communication module 15. The protection switch 7 is located outside the test unit and is used to control the on-off of the entire test unit circuit to prevent damage to the test unit or the circuit breaker under test due to abnormalities in the test device. The current booster 8 is connected in parallel to the protection switch 7 and is used to verify the transformation ratio of the current transformer 9; the transformer 9 is connected to the output end of the current booster 8 and is used to measure and protect the test unit. The first interface of the constant current source 11 is connected to the protection switch 7 , the second interface of the constant current source 11 is connected to the current booster 8 , the third interface of the constant current source 11 is connected to the transformer 9 , and the fourth interface of the constant current source 11 is connected to the transformer 9 . The interface is connected to the timer 12, the voltage and power consumption acquisition module 13, the multi-channel temperature rise inspection instrument 14, and the communication module 15. The constant current source 11 is used to provide the basic current of each component in the test unit; the timer 12 is used to record the test time; the voltage and power consumption acquisition module 13 is used to collect the power consumption of the circuit breaker under test during the test; the multi-channel temperature The inspection instrument 14 is used to record and display the temperature of the circuit breaker under test during the test. All input and output interfaces in this embodiment adopt the RS-485 communication standard.
本发明工作流程如下：首先，将设备放置在温度变化范围为-40℃-85℃的可调高低温交变温箱中。每个工位按照2P开关接线方式，工位之间为并联方式接线，开关两极之间电流采用串联方式。电流采用各极串联方式引入，满足最大1.45倍额定电流的测试；开关采用上下安装，电流出线下端采用底部固定铜触头及银点结构，每极铜触头端头压接部位开口，接入温度传感器。根据被测断路器的规格、型号，调整工位工装夹具2，使得被测断路器恰好放入接线柜1的测试工位并通过压接手柄固定。根据被测断路器的规格、型号，选择相应的标准试验导线，并与被测断路器的信号端相连；将温度传感器固定于被测断路器的表面。操作者通过触摸屏5输入试验基本设置信息；根据被测断路器的额定电流和校验倍数，从十个可变频电流源中选出最合适的一个并校准，随后设置试验需要的档位、时间、倍数。工控电脑根据触摸屏5发送过来的基本设置信息自动对内部环境进行相应配置，并设置箱内温度为85℃，进行断路器高温脱扣测试。操作者按下启停按钮6后，试验开始，启停指令被发送至工控电脑，同时可变频电流源向试验单元输出设定的工作电流；工控电脑向试验单元的通信模块15发送实时控制信息，试验单元向被测断路器发送初始最小测试信号。试验单元内恒流源11的输出接通升流器8，升流器8输出经过互感器9来改变电流大小；互感器9的输出端（二次回路）接通恒流源11的5A电流信号。被测断路器的动作信号通过标准试验导线与柜间信号线至工控电脑，被测断路器的温度信息通过温度传感器感知并发送至多路温升巡检仪14；工控电脑同时将被测断路器的实时状态通过触摸屏5显示。在1.13倍以及1.13倍以下额定电流的激励下，如果被测断路器出现脱扣动作信号，则结束当前测试，记录该被测断路器“早跳不合格”，并将测试结果通过触摸屏5输出。在1.13倍至1.45倍之间的额定电流的激励下，如果被测断路器出现脱扣动作信号，则该被测断路器测试合格，工控电脑把当前的测试信号与基本测试信息记录后结束当前测试，并将测试结果通过触摸屏5输出。如果被测断路器未出现脱扣动作信号，则工控电脑向试验单元发送新的控制信息，试验单元向被测断路器发送下一级测试信号（按一定增量加大输出的电流），重复上述步骤，直至被测断路器出现脱扣动作信号。如果试验单元已将测试信号（电流）增加到1.45倍额定电流，被测断路器始终没有出现脱扣动作信号，则结束当前测试，记录该被测断路器“晚跳不合格”，并将测试结果通过触摸屏5输出。测试时由于外界因素（如气温等）所造成断路器动作误差时，应根据实际情况对测试结果予以修正。测试结束后，试验台会自动将测试结果保存到数据库中。接着操作者重复本实施例步骤，进行下一个测试。The working process of the present invention is as follows: first, place the equipment in an adjustable high and low temperature alternating temperature box with a temperature range of -40°C to 85°C. Each workstation follows the 2P switch wiring method. The workstations are connected in parallel, and the current between the two poles of the switch is connected in series. The current is introduced through each pole in series to meet the test of a maximum of 1.45 times the rated current; the switch is installed up and down, and the lower end of the current outlet adopts a bottom-fixed copper contact and silver point structure. The crimping part of each pole's copper contact end is open for access. Temperature Sensor. According to the specification and model of the circuit breaker under test, adjust the station fixture 2 so that the circuit breaker under test is placed exactly into the test station of the wiring cabinet 1 and fixed by the crimping handle. According to the specification and model of the circuit breaker under test, select the corresponding standard test wire and connect it to the signal end of the circuit breaker under test; fix the temperature sensor on the surface of the circuit breaker under test. The operator inputs the basic test setting information through the touch screen 5; according to the rated current and calibration multiple of the circuit breaker under test, the most appropriate one is selected from ten variable frequency current sources and calibrated, and then the gear and time required for the test are set. ,multiple. The industrial control computer automatically configures the internal environment accordingly based on the basic setting information sent by the touch screen 5, and sets the temperature inside the box to 85°C to conduct the circuit breaker high temperature trip test. After the operator presses the start-stop button 6, the test starts. The start-stop command is sent to the industrial control computer. At the same time, the variable frequency current source outputs the set working current to the test unit; the industrial control computer sends real-time control information to the communication module 15 of the test unit. , the test unit sends an initial minimum test signal to the circuit breaker under test. The output of the constant current source 11 in the test unit is connected to the current booster 8, and the output of the current booster 8 passes through the transformer 9 to change the current size; the output end (secondary circuit) of the transformer 9 is connected to the 5A current of the constant current source 11 Signal. The action signal of the circuit breaker under test is sent to the industrial control computer through the standard test wire and the signal line between the cabinets. The temperature information of the circuit breaker under test is sensed by the temperature sensor and sent to the multi-channel temperature rise inspection instrument 14; the industrial control computer simultaneously records the circuit breaker under test The real-time status is displayed through the touch screen 5. Under the excitation of 1.13 times or less than 1.13 times the rated current, if the circuit breaker under test displays a tripping action signal, the current test will be ended, the "early trip failure" of the circuit breaker under test will be recorded, and the test results will be output through the touch screen 5 . Under the excitation of a rated current between 1.13 times and 1.45 times, if the circuit breaker under test displays a tripping action signal, the circuit breaker under test passes the test. The industrial control computer records the current test signal and basic test information and ends the current test. Test and output the test results through the touch screen 5. If the circuit breaker under test does not show a tripping action signal, the industrial control computer sends new control information to the test unit, and the test unit sends the next level test signal to the circuit breaker under test (increases the output current by a certain increment), and repeats Follow the above steps until the circuit breaker under test displays a tripping action signal. If the test unit has increased the test signal (current) to 1.45 times the rated current, and the circuit breaker under test never shows a tripping action signal, the current test will be ended, the circuit breaker under test will be recorded as "late trip failure", and the test will be The results are output via the touch screen 5. When the circuit breaker operation error is caused by external factors (such as temperature, etc.) during testing, the test results should be corrected according to the actual situation. After the test is completed, the test bench will automatically save the test results to the database. Then the operator repeats the steps of this embodiment and performs the next test.
实施例3：Example 3:
参照附图1与附图2，本实施例主要由接线柜1与控制柜4组成，接线柜1与控制柜4为两个独立柜体，通过柜间信号线相连；控制柜4将测试信号通过柜间信号线发送至接线柜1，接线柜1将被测断路器的状态信号通过柜间信号线发送至控制柜4。接线柜1与控制柜4的柜体采用塑料骨架搭建并支撑，柜体表面用木制面板封闭。接线部分包括十五个工位工装夹具2、十五根标准试验导线、十五个温度传感器与十五根温度传感导线；其中工位工装夹具2设置在接线柜1的外侧面板，标准试验导线与柜间信号线相连；工位工装夹具2用于将被测断路器固定在接线柜1上，标准试验导线用于将测试信号传输至被测断路器。温度传感器通过温度传感导线与柜间信号线相连，用于感知被测断路器的实时温度。控制部分包括十五个试验单元、工控电脑、触摸屏5、启停按钮6与十个可变频电流源。选定其中一个试验单元的输出端10与柜间信号线相连；工控电脑与试验单元的通信模块15建立连接；启停按钮6设置在控制柜的外侧面板上，并通过启停信号线与工控电脑相连。选定其中一个可变频电流源通过试验电源线与试验单元相连，可变频电流源通过电源指令线与工控电脑相连。触摸屏5设置在控制柜4的外侧面板上，并与工控电脑的人机接口相连。工控电脑内设有可编程控制器PLC，PLC上载有PID软件控制程式，用于控制测试信号的输出。参照附图3，每个试验单元由电学器件及其连接导线构成，包括保护开关7、升流器8、互感器9、恒流源11、计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15。保护开关7设于试验单元的外侧，用于控制整个试验单元电路的通断，防止因测试装置异常导致的试验单元或被测断路器的损坏。升流器8并联于保护开关7，用于校验电流互感器9变比；互感器9与升流器8的输出端相连，用于量测与保护试验单元。恒流源11的第一接口与保护开关7相连，恒流源11的第二接口与升流器8相连，恒流源11的第三接口与互感器9相连，恒流源11的第四接口与计时仪12、电压功耗采集模块13、多路温升巡检仪14、通信模块15相连。恒流源11用于提供试验单元内各个部件的基础电流；计时仪12用于测试时间的记录；电压功耗采集模块13用于试验过程中被测断路器的功耗的采集；多路温升巡检仪14用于试验过程中被测断路器温度的记录和显示。本实施例中所有的输入输出接口均采用RS-232通信标准。Referring to Figures 1 and 2, this embodiment mainly consists of a wiring cabinet 1 and a control cabinet 4. The wiring cabinet 1 and the control cabinet 4 are two independent cabinets, connected through signal lines between cabinets; the control cabinet 4 transmits the test signal It is sent to the wiring cabinet 1 through the inter-cabinet signal line, and the wiring cabinet 1 sends the status signal of the circuit breaker under test to the control cabinet 4 through the inter-cabinet signal line. The cabinets of the wiring cabinet 1 and the control cabinet 4 are built and supported by plastic frames, and the cabinet surfaces are closed with wooden panels. The wiring part includes fifteen workstation fixtures 2, fifteen standard test wires, fifteen temperature sensors and fifteen temperature sensing wires; the workstation fixtures 2 are set on the outer panel of the wiring cabinet 1, and the standard test The wires are connected to the signal wires between cabinets; the station fixture 2 is used to fix the circuit breaker under test on the wiring cabinet 1, and the standard test wire is used to transmit the test signal to the circuit breaker under test. The temperature sensor is connected to the signal line between cabinets through a temperature sensing wire and is used to sense the real-time temperature of the circuit breaker under test. The control part includes fifteen test units, industrial control computers, touch screens 5, start and stop buttons 6 and ten variable frequency current sources. The output end 10 of one of the test units is selected and connected to the signal line between the cabinets; the industrial control computer establishes a connection with the communication module 15 of the test unit; the start and stop button 6 is set on the outer panel of the control cabinet and communicates with the industrial control through the start and stop signal line. Computer connected. Select one of the variable frequency current sources to be connected to the test unit through the test power cord, and the variable frequency current source is connected to the industrial control computer through the power command line. The touch screen 5 is arranged on the outer panel of the control cabinet 4 and is connected to the human-machine interface of the industrial control computer. The industrial control computer is equipped with a programmable controller PLC, and the PLC is loaded with a PID software control program to control the output of test signals. Referring to Figure 3, each test unit is composed of electrical devices and their connecting wires, including a protective switch 7, a current booster 8, a transformer 9, a constant current source 11, a timer 12, a voltage and power consumption acquisition module 13, and a multi-channel Temperature rise inspection instrument 14, communication module 15. The protection switch 7 is located outside the test unit and is used to control the on-off of the entire test unit circuit to prevent damage to the test unit or the circuit breaker under test due to abnormalities in the test device. The current booster 8 is connected in parallel to the protection switch 7 and is used to verify the transformation ratio of the current transformer 9; the transformer 9 is connected to the output end of the current booster 8 and is used to measure and protect the test unit. The first interface of the constant current source 11 is connected to the protection switch 7 , the second interface of the constant current source 11 is connected to the current booster 8 , the third interface of the constant current source 11 is connected to the transformer 9 , and the fourth interface of the constant current source 11 is connected to the transformer 9 . The interface is connected to the timer 12, the voltage and power consumption acquisition module 13, the multi-channel temperature rise inspection instrument 14, and the communication module 15. The constant current source 11 is used to provide the basic current of each component in the test unit; the timer 12 is used to record the test time; the voltage and power consumption acquisition module 13 is used to collect the power consumption of the circuit breaker under test during the test; the multi-channel temperature The inspection instrument 14 is used to record and display the temperature of the circuit breaker under test during the test. All input and output interfaces in this embodiment adopt the RS-232 communication standard.
本发明工作流程如下：首先，将设备放置在温度变化范围为-40℃-85℃的可调高低温交变温箱中。每个工位按照2P开关接线方式，工位之间为并联方式接线，开关两极之间电流采用串联方式。电流采用各极串联方式引入，满足最大1.45倍额定电流的测试；开关采用上下安装，电流出线下端采用底部固定铜触头及银点结构，每极铜触头端头压接部位开口，接入温度传感器。根据被测断路器的规格、型号，调整工位工装夹具2，使得被测断路器恰好放入接线柜1的测试工位并由压接手柄固定。根据被测断路器的规格、型号，选择相应的标准试验导线，并与被测断路器的信号端相连；将温度传感器固定于被测断路器的表面。操作者通过触摸屏5输入试验基本设置信息；根据被测断路器的额定电流和校验倍数，从十个可变频电流源中选出最合适的一个并校准，随后设置试验需要的档位、时间、倍数。工控电脑根据触摸屏5发送过来的基本设置信息自动对内部环境进行相应配置，并设置箱内温度为25℃，进行断路器常温脱扣测试。操作者按下启停按钮6后，试验开始，启停指令被发送至工控电脑，同时可变频电流源向试验单元输出设定的工作电流；工控电脑向试验单元的通信模块15发送实时控制信息，试验单元向被测断路器发送初始最小测试信号。试验单元内恒流源11的输出接通升流器8，升流器8输出经过互感器9来改变电流大小；互感器9的输出端（二次回路）接通恒流源11的5A电流信号。被测断路器的动作信号通过标准试验导线与柜间信号线至工控电脑，被测断路器的温度信息通过温度传感器感知并发送至多路温升巡检仪14；工控电脑同时将被测断路器的实时状态通过触摸屏5显示。在1.13倍以及1.13倍以下额定电流的激励下，如果被测断路器出现脱扣动作信号，则结束当前测试，记录该被测断路器“早跳不合格”，并将测试结果通过触摸屏5输出。在1.13倍至1.45倍之间的额定电流的激励下，如果被测断路器出现脱扣动作信号，则该被测断路器测试合格，工控电脑把当前的测试信号与基本测试信息记录后结束当前测试，并将测试结果通过触摸屏5输出。如果被测断路器未出现脱扣动作信号，则工控电脑向试验单元发送新的控制信息，试验单元向被测断路器发送下一级测试信号（按一定增量加大输出的电流），重复上述步骤，直至被测断路器出现脱扣动作信号。如果试验单元已将测试信号（电流）增加到1.45倍额定电流，被测断路器始终没有出现脱扣动作信号，则结束当前测试，记录该被测断路器“晚跳不合格”，并将测试结果通过触摸屏5输出。测试时由于外界因素（如气温等）所造成断路器动作误差时，应根据实际情况对测试结果予以修正。接着操作者重复本实施例步骤，进行下一个测试。The working process of the present invention is as follows: first, place the equipment in an adjustable high and low temperature alternating temperature box with a temperature range of -40°C to 85°C. Each workstation follows the 2P switch wiring method. The workstations are connected in parallel, and the current between the two poles of the switch is connected in series. The current is introduced through each pole in series to meet the test of a maximum of 1.45 times the rated current; the switch is installed up and down, and the lower end of the current outlet adopts a bottom-fixed copper contact and silver point structure. The crimping part of each pole's copper contact end is open for access. Temperature Sensor. According to the specification and model of the circuit breaker under test, adjust the station fixture 2 so that the circuit breaker under test is placed exactly into the test station of the wiring cabinet 1 and is fixed by the crimping handle. According to the specification and model of the circuit breaker under test, select the corresponding standard test wire and connect it to the signal end of the circuit breaker under test; fix the temperature sensor on the surface of the circuit breaker under test. The operator inputs the basic test setting information through the touch screen 5; according to the rated current and calibration multiple of the circuit breaker under test, the most appropriate one is selected from ten variable frequency current sources and calibrated, and then the gear and time required for the test are set. ,multiple. The industrial control computer automatically configures the internal environment accordingly based on the basic setting information sent by the touch screen 5, and sets the temperature inside the box to 25°C to conduct the normal temperature trip test of the circuit breaker. After the operator presses the start-stop button 6, the test starts. The start-stop command is sent to the industrial control computer. At the same time, the variable frequency current source outputs the set working current to the test unit; the industrial control computer sends real-time control information to the communication module 15 of the test unit. , the test unit sends an initial minimum test signal to the circuit breaker under test. The output of the constant current source 11 in the test unit is connected to the current booster 8, and the output of the current booster 8 passes through the transformer 9 to change the current size; the output end (secondary circuit) of the transformer 9 is connected to the 5A current of the constant current source 11 Signal. The action signal of the circuit breaker under test is sent to the industrial control computer through the standard test wire and the signal line between the cabinets. The temperature information of the circuit breaker under test is sensed by the temperature sensor and sent to the multi-channel temperature rise inspection instrument 14; the industrial control computer simultaneously records the circuit breaker under test The real-time status is displayed through the touch screen 5. Under the excitation of 1.13 times or less than 1.13 times the rated current, if the circuit breaker under test displays a tripping action signal, the current test will be ended, the "early trip failure" of the circuit breaker under test will be recorded, and the test results will be output through the touch screen 5 . Under the excitation of a rated current between 1.13 times and 1.45 times, if the circuit breaker under test displays a tripping action signal, the circuit breaker under test passes the test. The industrial control computer records the current test signal and basic test information and ends the current test. Test and output the test results through the touch screen 5. If the circuit breaker under test does not show a tripping action signal, the industrial control computer sends new control information to the test unit, and the test unit sends the next level test signal to the circuit breaker under test (increases the output current by a certain increment), and repeats Follow the above steps until the circuit breaker under test displays a tripping action signal. If the test unit has increased the test signal (current) to 1.45 times the rated current, and the circuit breaker under test never shows a tripping action signal, the current test will be ended, the circuit breaker under test will be recorded as "late trip failure", and the test will be The results are output via the touch screen 5. When the circuit breaker operation error is caused by external factors (such as temperature, etc.) during testing, the test results should be corrected according to the actual situation. Then the operator repeats the steps of this embodiment and performs the next test.
本发明的技术效果在于：通过预先设定，工控电脑采用可编程控制器PLC与PID软件控制程式，显著提高了测试速率；设有多个工位工装夹具，接线柜采用整套独立隔离电源，有效支持不同规格、型号断路器的同时测试工作；设置温度传感器与多路温升巡检仪，准确监控被测样品的实时温度；设置多个试验单元，同时完成断路器多种脱扣测试；设有多个变频电流源，可以根据试验需要选择不同的档位、时间、倍数，有利于提高脱扣测试精度、增强本发明的兼容性。本发明特别适用于自动费控断路器的脱扣测试，具有结构合理、精度好、低成本、效率高等优点，市场广阔，有良好的经济和社会效益。The technical effect of this invention is that: through pre-setting, the industrial control computer adopts programmable controller PLC and PID software control program, which significantly improves the test speed; it is equipped with multiple workstation fixtures, and the wiring cabinet adopts a complete set of independent isolated power supplies, which is effective Support simultaneous testing of circuit breakers of different specifications and models; set up temperature sensors and multi-channel temperature rise inspection instruments to accurately monitor the real-time temperature of the tested samples; set up multiple test units to complete multiple tripping tests of circuit breakers at the same time; set up There are multiple variable frequency current sources, and different gears, times, and multiples can be selected according to test needs, which is beneficial to improving the accuracy of the tripping test and enhancing the compatibility of the present invention. The invention is particularly suitable for the tripping test of the automatic cost-controlled circuit breaker. It has the advantages of reasonable structure, good precision, low cost, high efficiency, etc., has a broad market, and has good economic and social benefits.
以上所述实施例仅是为充分说明本发明而所举的较佳的实施例，本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。The above-described embodiments are only preferred embodiments to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928633.8A CN106646209B (en) | 2016-10-31 | 2016-10-31 | Intelligent testing equipment for high-temperature and low-temperature tripping of charge control circuit breaker |
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| CN108051670A (en) * | 2017-12-05 | 2018-05-18 | 深圳国创名厨商用设备制造有限公司南海分公司 | A kind of transformer testing frock |
| CN108303643B (en) * | 2018-01-15 | 2020-05-05 | 温州大学苍南研究院 | A Fast Measurement Method for Thermal Time Constant of Miniature Circuit Breakers |
| CN108333502B (en) * | 2018-01-15 | 2020-05-05 | 温州大学苍南研究院 | Method for measuring action temperature of miniature circuit breaker |
| CN109238681A (en) * | 2018-10-17 | 2019-01-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Fuse switch detection system and method |
| CN110441682A (en) * | 2019-09-10 | 2019-11-12 | 浙江华电器材检测研究所有限公司 | A kind of one or two fusion switch test systems |
| CN110514997B (en) * | 2019-09-10 | 2021-06-11 | 浙江华电器材检测研究所有限公司 | Detection device for detecting circuit breaker |
| CN110988671A (en) * | 2020-03-04 | 2020-04-10 | 南京捷泰电力设备有限公司 | Integrated device suitable for testing, checking and electrifying aging of miniature circuit breaker |
| CN113363117A (en) * | 2020-03-04 | 2021-09-07 | 南京捷泰电力设备有限公司 | Production method of miniature circuit breaker |
| CN114966388B (en) * | 2022-06-08 | 2024-11-22 | 赫森电气(无锡)有限公司 | A method for operating a fuse breaking characteristic test bench |
| CN114839527B (en) * | 2022-07-04 | 2022-09-20 | 国网辽宁省电力有限公司 | Circuit breaker detection device with power supply |
| CN115297491B (en) * | 2022-08-02 | 2025-03-21 | 温州大学乐清工业研究院 | A 433MHz wireless communication performance testing device and method |
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