CN107797003B - Virtual load test device and method for detecting metering performance of charging pile - Google Patents
Virtual load test device and method for detecting metering performance of charging pile Download PDFInfo
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Abstract
Description
技术领域Technical field
本发明属于计量领域，具体涉及一种用于充电桩计量性能检测的虚拟负荷试验装置及方法，用于在现场或实验室环境下，对交(直)流充电桩进行电能计量准确度的虚负荷检验。The invention belongs to the field of metering, and specifically relates to a virtual load test device and method for measuring the metering performance of charging piles. It is used to perform virtual test of the accuracy of electric energy metering on AC (DC) charging piles in a field or laboratory environment. Load inspection.
背景技术Background technique
充电桩(机)一般由桩体、电气模块、计量模块等部分组成。电气模块和计量模块安装在桩体内部。桩体包括外壳和人机交互界面、电气模块包括充电插座、电缆转接端子排、安全防护装置等。一般情况下，用户充电完成后需要按照人机交互界面中显示的金额付费。因此，充电桩(机)的计量性能检测需要整体完成，目前采用的整体检测方法主要为实负荷法。实负荷方法具有线路简单，使用方便的特点，但该方法会增加额外的能量消耗，以目前检测一台充电桩(机)需要消耗电能50kWh计算，我国一年充电桩(机)的检测耗电量将达到400万kWh。Charging piles (machine) generally consist of pile bodies, electrical modules, metering modules and other parts. The electrical module and metering module are installed inside the pile body. The pile body includes the shell and human-computer interaction interface, and the electrical module includes charging sockets, cable transfer terminal blocks, safety protection devices, etc. Under normal circumstances, users need to pay according to the amount displayed on the human-computer interaction interface after charging is completed. Therefore, the metering performance testing of charging piles (machine) needs to be completed as a whole, and the overall testing method currently used is mainly the actual load method. The real load method has the characteristics of simple circuit and easy use, but this method will increase additional energy consumption. Based on the current power consumption of 50kWh to detect a charging pile (machine), the power consumption of the detection of charging piles (machine) in my country per year The capacity will reach 4 million kWh.
发明内容Contents of the invention
本发明的目的在于解决上述现有技术中存在的不足，提供一种用于充电桩计量性能检测的虚拟负荷试验装置及方法，可以在充电桩(机)不做大规模的改动下，通过外部附加的电流源、电压源、隔离设备，标准计量设备，完成充电桩(机)的整体计量性能检测，且具有操作灵活，测量效率高，节省能耗的特点。The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art and provide a virtual load test device and method for measuring the metering performance of charging piles, which can be used to test the charging pile (machine) through external The additional current source, voltage source, isolation equipment, and standard metering equipment complete the overall metering performance testing of the charging pile (machine), and have the characteristics of flexible operation, high measurement efficiency, and energy saving.
本发明是通过以下技术方案实现的：The present invention is achieved through the following technical solutions:
一种用于充电桩计量性能检测的虚拟负荷试验装置，包括：外部电流源、外部电压源、隔离电流设备和标准计量设备；A virtual load test device for charging pile metering performance testing, including: external current source, external voltage source, isolation current equipment and standard metering equipment;
所述外部电压源的高端与充电桩的电源输入端的L端连接，外部电压源的低端与充电桩的电源输入端的N端连接；The high end of the external voltage source is connected to the L end of the power input end of the charging pile, and the low end of the external voltage source is connected to the N end of the power input end of the charging pile;
所述外部电流源连接隔离电流设备，所述隔离电流设备的电流高端与充电桩的电源输入端的L端连接，隔离电流设备的电流低端与标准计量设备的电流低端连接；The external current source is connected to the isolation current device, the high current end of the isolation current device is connected to the L end of the power input end of the charging pile, and the current low end of the isolation current device is connected to the current low end of the standard metering device;
所述充电桩的充电枪的高端与标准计量设备的电流高端连接，充电枪的低端与标准计量设备的电压低端连接，标准计量设备的电压高端与标准计量设备的电流高端连接。The high end of the charging gun of the charging pile is connected to the high end of the current of the standard metering equipment, the low end of the charging gun is connected to the low end of the voltage of the standard metering equipment, and the high end of the voltage of the standard metering equipment is connected to the high end of the current of the standard metering equipment.
所述充电桩为交流充电桩或者直流充电桩。The charging pile is an AC charging pile or a DC charging pile.
利用所述用于充电桩计量性能检测的虚拟负荷试验装置实现的充电桩计量性能检测的虚拟负荷试验方法，包括：The virtual load test method for charging pile metering performance detection implemented by the virtual load test device for charging pile metering performance detection includes:
步骤1，将外部电压源的高端接入充电桩的电源输入端的L端，外部电压源的低端接入充电桩的电源输入端的N端；将外部电流源与隔离电流设备连接，将隔离电流设备的电流高端接入充电桩的电源输入端的L端，隔离电流设备的电流低端接入标准计量设备的电流低端；Step 1. Connect the high end of the external voltage source to the L end of the power input end of the charging pile, and the low end of the external voltage source to the N end of the power input end of the charging pile; connect the external current source to the isolation current device, and connect the isolation current The high-end current of the device is connected to the L end of the power input end of the charging pile, and the low-end current of the isolation current device is connected to the low-end current of the standard metering device;
步骤2，将充电枪的高端接入标准计量设备电流高端，充电枪的低端接入标准计量设备的电压低端，标准计量设备的电压高端与标准计量设备的电流高端连接；Step 2: Connect the high end of the charging gun to the high end of the current of the standard metering equipment, the low end of the charging gun to the low end of the voltage of the standard metering equipment, and the high end of the voltage of the standard metering equipment to the high end of the current of the standard metering equipment;
步骤3，设置外部电压源的输出电压信号，设置外部电流源的输出电流信号，同步启动充电桩和标准计量设备进行测量，获得充电桩的整体计量误差，完成充电桩的虚拟负荷试验。Step 3: Set the output voltage signal of the external voltage source, set the output current signal of the external current source, start the charging pile and standard metering equipment simultaneously for measurement, obtain the overall measurement error of the charging pile, and complete the virtual load test of the charging pile.
所述步骤3中的获得充电桩的整体计量误差，完成充电桩的虚拟负荷试验是这样实现的：Obtaining the overall measurement error of the charging pile in step 3 and completing the virtual load test of the charging pile is achieved as follows:
当充电桩累计一定时间的电能量值后，同步停止充电桩和标准计量设备；When the charging pile accumulates the electric energy value for a certain period of time, the charging pile and the standard metering equipment are stopped simultaneously;
记录充电桩显示的充电电量值和标准计量设备显示的充电电量值，然后将这两个充电电量值进行比较，确定充电桩的整体计量误差，即完成充电桩的虚拟负荷试验。Record the charging power value displayed by the charging pile and the charging power value displayed by the standard metering equipment, and then compare the two charging power values to determine the overall metering error of the charging pile, that is, complete the virtual load test of the charging pile.
与现有技术相比，本发明的有益效果是：本发明通过外部附加的电流源、电压源、隔离设备，标准计量设备，完成充电桩(机)的整体计量性能检测，具有操作灵活，测量效率高，节省能耗的特点。Compared with the existing technology, the beneficial effects of the present invention are: the present invention completes the overall metering performance detection of the charging pile (machine) through external additional current sources, voltage sources, isolation equipment, and standard metering equipment, and has the advantages of flexible operation and measurement High efficiency and energy saving features.
附图说明Description of the drawings
图1本发明装置的结构示意图。Figure 1 is a schematic structural diagram of the device of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明作进一步详细描述：The present invention will be described in further detail below in conjunction with the accompanying drawings:
本发明提供了一种交(直)流充电桩(机)计量性能检测的试验方法，用于在现场或实验室环境下，对交(直)流充电桩(机)进行电能计量准确度的虚负荷检验。该发明可以在充电桩(机)不做大规模的改动下，通过外部附加的电流源、电压源、隔离设备，标准计量设备，完成充电桩(机)的整体计量性能检测。The invention provides a test method for measuring the measurement performance of AC (DC) charging piles (machine), which is used to measure the accuracy of electric energy measurement of AC (DC) charging piles (machine) in a field or laboratory environment. Dummy load test. This invention can complete the overall metering performance testing of the charging pile (machine) through additional external current sources, voltage sources, isolation equipment, and standard metering equipment without making large-scale changes to the charging pile (machine).
本发明装置如图1所示，外部电压源的高端H接入交(直)流充电桩(机)电源输入端的L端，外部电压源的低端L接入交(直)流充电桩(机)电源输入端的N端；外部电流源经过隔离电流设备，该设备可使电流源免受电压源的高压冲击，隔离设备的电流高端H接入充电桩(机)的电源输入L端，隔离设备的电流低端L接入标准计量设备的电流低端L；The device of the present invention is shown in Figure 1. The high end H of the external voltage source is connected to the L end of the power input end of the AC (DC) charging pile (machine), and the low end L of the external voltage source is connected to the AC (DC) charging pile ( The N terminal of the power input terminal of the machine); the external current source passes through the isolation current device, which can protect the current source from the high voltage impact of the voltage source. The current high end H of the isolation device is connected to the power input L terminal of the charging pile (machine), and the isolation The current low end L of the equipment is connected to the current low end L of the standard metering equipment;
充电枪高端接入标准计量设备电流高端H，充电枪低端接入标准计量设备电压低端L，标准计量设备电压高端H与标准计量设备电流高端H连接。The high end of the charging gun is connected to the high end H of the current of the standard metering equipment, the low end of the charging gun is connected to the low end L of the voltage of the standard metering equipment, and the high end H of the voltage of the standard metering equipment is connected to the high end H of the current of the standard metering equipment.
一种交(直)流充电桩(机)计量性能检测的虚拟负荷试验方法，所述方法包括如下步骤：A virtual load test method for measuring performance testing of AC (DC) charging piles (machine), the method includes the following steps:
步骤1，外部电压源的高端H接入交(直)流充电桩(机)电源输入端的L端，外部电压源的低端L接入交(直)流充电桩(机)电源输入端的N端；外部电流源经过隔离电流设备，隔离设备的电流高端H接入充电桩(机)的电源输入L端，隔离设备的电流低端L接入标准计量设备的电流低端L，隔离设备的电流高端H接入交(直)流充电桩(机)电源输入端的L端；Step 1. The high end H of the external voltage source is connected to the L end of the AC (DC) current charging pile (machine) power input end, and the low end L of the external voltage source is connected to the N end of the AC (DC) current charging pile (machine) power input end. terminal; the external current source passes through the isolation current device, the high-end current H of the isolation device is connected to the power input L end of the charging pile (machine), the low-end current L of the isolation device is connected to the low-end current L of the standard metering device, and the current low-end L of the isolation device is connected The high end H of the current is connected to the L end of the AC (DC) charging pile (machine) power input end;
步骤2，充电枪高端接入标准计量设备电流高端H，充电枪低端接入标准计量设备电压低端L，标准计量设备电压高端H与标准计量设备电流高端H连接。Step 2: The high end of the charging gun is connected to the current high end H of the standard metering equipment, the low end of the charging gun is connected to the voltage low end L of the standard metering equipment, and the voltage high end H of the standard metering equipment is connected to the current high end H of the standard metering equipment.
步骤3，完成上述步骤1，2后，根据检测试验要求，设置外部电压源输出电压信号，设置外部电流源输出电流信号，同步启动充电桩(机)和标准计量设备进行测量，当充电桩(机)累计一定时间的电能量值后，同步停止充电桩(机)和标准计量设备。记录充电桩(机)显示的充电电量值和标准计量设备显示的充电电量值，将这两个充电电量值进行比较，确定充电桩(机)的整体计量误差，完成充电桩(机)的虚拟负荷试验。Step 3: After completing the above steps 1 and 2, according to the detection and test requirements, set the external voltage source to output the voltage signal, set the external current source to output the current signal, and start the charging pile (machine) and standard metering equipment simultaneously for measurement. When the charging pile ( After accumulating the electric energy value for a certain period of time, the charging pile (machine) and the standard metering equipment are stopped simultaneously. Record the charging power value displayed by the charging pile (machine) and the charging power value displayed by the standard metering equipment, compare the two charging power values, determine the overall measurement error of the charging pile (machine), and complete the virtualization of the charging pile (machine). Load test.
本发明将一种虚拟负荷的试验方法用于交(直)流充电桩(机)计量性能检测，该方法通过外部附加的电流源、电压源、隔离设备，标准计量设备，完成充电桩(机)的整体计量性能检测。在检测过程中，可以通过外部电压源和电流源的组合，完成虚拟功率的产生，具有操作灵活，测量效率高，节省能耗的特点。The present invention uses a virtual load test method for AC (DC) current charging pile (machine) metering performance testing. This method completes the charging pile (machine) through external additional current sources, voltage sources, isolation equipment, and standard metering equipment. ) overall measurement performance testing. During the detection process, the virtual power can be generated through the combination of external voltage source and current source, which has the characteristics of flexible operation, high measurement efficiency and energy saving.
上述技术方案只是本发明的一种实施方式，对于本领域内的技术人员而言，在本发明公开了应用方法和原理的基础上，很容易做出各种类型的改进或变形，而不仅限于本发明上述具体实施方式所描述的方法，因此前面描述的方式只是优选的，而并不具有限制性的意义。The above technical solution is only one embodiment of the present invention. For those skilled in the art, on the basis of the application methods and principles disclosed in the present invention, it is easy to make various types of improvements or modifications, not limited to The methods described in the above specific embodiments of the present invention are therefore only preferred and do not have a restrictive meaning.
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