CN112285453B - Low-voltage user load identification test system and test method thereof - Google Patents
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
本发明属于电力设备技术领域,尤其是一种低压用户负荷识别测试系统及其测试方法,包括低压电网,在该低压电网的三相电源的主路内安装有低压断路器,所述三相电源的二次出口端并联有多个电子负载,在低压断路器和每个电子负载的之路上均安装有一接入工装,每个所述的接入工装均设置有接口用于与外部的测试设备连接,各个所述的电子负载分别和一测试工作站实现数据互通,用于配置电子负载的大小。
The invention belongs to the technical field of electric power equipment, in particular to a low-voltage user load identification testing system and a testing method thereof, including a low-voltage power grid, a low-voltage circuit breaker is installed in the main circuit of a three-phase power supply of the low-voltage power grid, and the three-phase power supply Multiple electronic loads are connected in parallel at the secondary outlet of the circuit breaker, and an access tool is installed on the path between the low-voltage circuit breaker and each electronic load, and each access tool is provided with an interface for connecting with external test equipment connection, each of the electronic loads realizes data communication with a test workstation respectively, and is used to configure the size of the electronic load.
Description
技术领域technical field
本发明属于电力设备技术领域,尤其是一种低压用户负荷识别测试系统及其测试方法。The invention belongs to the technical field of electric equipment, in particular to a low-voltage user load identification test system and a test method thereof.
背景技术Background technique
有大量公开文献都在研究用户负荷识别算法,也有一些企业开发了用户负荷识别设备与系统,主要通过负载的瞬时特性或稳态特性或两者结合实现对负载的识别。公开文献上对识别算法或识别系统的验证,基本都是采用了一些实物负载进行实际运行后进行验证,但实际应用中的负载数不胜数,实验室实物负载的代表性过于狭小,难以对算法或系统的有效性进行全面的验证。A large number of public literatures are researching user load identification algorithms, and some companies have developed user load identification equipment and systems, which mainly realize load identification through the transient characteristics or steady-state characteristics of the load or a combination of the two. The verification of the recognition algorithm or recognition system in the public literature basically uses some physical loads for actual operation and verification, but there are countless loads in practical applications, and the representativeness of the physical load in the laboratory is too small, so it is difficult to verify the algorithm or system. The effectiveness of the comprehensive verification.
发明内容Contents of the invention
本发明的目的在于弥补现有技术的不足,提供一种配置灵活,拓展性强,有效采集电气数据的低压用户负荷识别测试系统及其测试方法。The purpose of the present invention is to make up for the deficiencies of the prior art, and provide a low-voltage user load identification test system and a test method thereof that are flexible in configuration, strong in expandability, and effectively collect electrical data.
本发明采取的技术方案是:The technical scheme that the present invention takes is:
一种低压用户负荷识别测试系统,包括低压电网,其特征在于:在该低压电网的三相电源的主路内安装有低压断路器,所述三相电源的二次出口端并联有多个电子负载,在低压断路器和每个电子负载的之路上均安装有一接入工装,每个所述的接入工装均设置有接口用于与外部的测试设备连接,各个所述的电子负载分别和一测试工作站实现数据互通,用于配置电子负载的大小。A low-voltage user load identification test system, including a low-voltage power grid, is characterized in that a low-voltage circuit breaker is installed in the main circuit of the three-phase power supply of the low-voltage power grid, and a plurality of electronic circuits are connected in parallel at the secondary outlet of the three-phase power supply. load, an access tool is installed on the road between the low-voltage circuit breaker and each electronic load, each of the access tools is provided with an interface for connecting with external test equipment, and each of the electronic loads is connected to the A test workstation implements data intercommunication and is used to configure the size of the electronic load.
进一步的,每个所述的电子负载内均存储最多500个负载特征曲线,并按负荷曲线列表的方式动态调整负载大小,所述的负荷曲线列表由测试工作站下发。Further, each electronic load stores up to 500 load characteristic curves, and dynamically adjusts the size of the load according to the load curve list, and the load curve list is issued by the test workstation.
进一步的,每个负载特征曲线均通过唯一的负载特征曲线标识ID标示,每个负载特征曲线均包括“负载曲线数据时间长度”和“负载曲线数据”。Further, each load characteristic curve is marked by a unique load characteristic curve ID, and each load characteristic curve includes "load curve data time length" and "load curve data".
进一步的,所述接入工装通过50/5的CT接入对应线路的3相电流,并直接引入对应线路的电压信号。Further, the connection tool is connected to the 3-phase current of the corresponding line through the 50/5 CT, and directly introduces the voltage signal of the corresponding line.
进一步的,所述测试工作站内存储有负载特征曲线,并内置运行测试软件,该测试软件具有测试方案编辑与执行能力的功能。Further, the test workstation stores load characteristic curves and built-in running test software, which has the function of editing and executing test schemes.
进一步的,所述的电子负载与以太交换器连通,并经该以太交换器与测试工作站实现数据互通。Further, the electronic load communicates with the Ethernet switch, and realizes data intercommunication with the test workstation through the Ethernet switch.
应用一种低压用户负荷识别测试系统的测试方法,Applying a test method for a low-voltage user load identification test system,
包括如下步骤:Including the following steps:
步骤1:操作人员通过上位机向测试工作站输入命令;Step 1: The operator inputs commands to the test workstation through the host computer;
步骤2:测试工作站根据命令制定测试方案;Step 2: The test workstation formulates a test plan according to the command;
步骤3:测试时,测试软件通过报文将对应ID的“负载特征曲线编排列表”下发给对应电子负载;Step 3: During the test, the test software sends the "load characteristic curve arrangement list" corresponding to the ID to the corresponding electronic load through the message;
步骤4:电子负载按报文要求启动时间启动,依次按“负载特征曲线标识ID1”对应的“负载曲线数据”改变负载大小,并按次数循环,直到报文中所有的曲线均执行完成。Step 4: The electronic load is started according to the start time required by the message, and the load size is changed according to the "load curve data" corresponding to the "load characteristic curve ID1" in turn, and cycled according to the number of times until all the curves in the message are executed.
而且,所述步骤2中的测试方案由一个或多个测试用例组成。Moreover, the test solution in
而且,所述测试用例包括各个电子负载“负载特征曲线编排列表”,格式为:电子负载ID,启动时间,“负载特征曲线标识ID1”,次数,“负载特征曲线标识ID2”,次数,“负载特征曲线标识ID3”,次数…“负载特征曲线标识IDn-1”,次数,“负载特征曲线标识IDn”。Moreover, the test case includes each electronic load "load characteristic curve arrangement list", the format is: electronic load ID, start time, "load characteristic curve identification ID1", times, "load characteristic curve identification ID2", times, "load Characteristic curve identification ID3", number of times..."load characteristic curve identification IDn-1", times, "load characteristic curve identification IDn".
本发明的优点和积极效果是:Advantage and positive effect of the present invention are:
本发明中,测试系统由三相低压电网供电,通过低压断路器给一系列电子负载供电。在低压断路器以及各个电子负载支路上,均安装了测量设备的接入工装,方便待测仪器/仪表的接入。电子负载通过以太交换器与测试工作站联网。In the present invention, the test system is powered by a three-phase low-voltage grid, and supplies power to a series of electronic loads through a low-voltage circuit breaker. On the low-voltage circuit breaker and each electronic load branch, the access tooling of the measuring equipment is installed to facilitate the access of the instrument/meter to be tested. The electronic load is connected to the test workstation through the Ethernet switch.
本发明中,采用低压断路器将测试环境与低压电网的隔离,配置有过流保护,如果测试环境发生短路等故障,低压断路器将自动跳闸,以隔离测试环境对电网的影响。In the present invention, a low-voltage circuit breaker is used to isolate the test environment from the low-voltage power grid, and overcurrent protection is configured. If a fault such as a short circuit occurs in the test environment, the low-voltage circuit breaker will automatically trip to isolate the influence of the test environment on the power grid.
本发明中,电子负载以及相应支路的数量可根据需要灵活配置,其中电子负载内部可以存储可以按负荷曲线列表的方式动态调整负载大小,负荷曲线列表可以由测试工作站在测试以报文形式前下发。电子负载按报文要求启动时间启动,依次按“负载特征曲线标识ID1”对应的“负载曲线数据”改变负载大小,并按次数循环,直到报文中所有的曲线均执行完成。In the present invention, the number of electronic loads and corresponding branches can be flexibly configured according to needs, wherein the electronic load can store internally and dynamically adjust the load size in the form of a load curve list, and the load curve list can be used by the test workstation before testing in the form of a message Issued. The electronic load is started according to the start time required by the message, and the load size is changed according to the "load curve data" corresponding to the "load characteristic curve ID1" in turn, and the cycle is repeated according to the number of times until all the curves in the message are executed.
本发明中,接入工装通过50/5的CT接入对应线路的3相电流,并直接引入对应线路的电压信号,实现对应线路全电流、电压信号的接入。待测仪器/仪表接入测控设备接入工装,可以实现对应线路电气数据的采集,进而获取对应线路的电气数据的瞬时特性或稳态特性,为负荷识别提供数据基础。In the present invention, the access tool accesses the 3-phase current of the corresponding line through the 50/5 CT, and directly introduces the voltage signal of the corresponding line to realize the access of the full current and voltage signal of the corresponding line. The instrument/instrument to be tested is connected to the measurement and control equipment and connected to the tooling, which can realize the collection of electrical data of the corresponding line, and then obtain the instantaneous characteristics or steady-state characteristics of the electrical data of the corresponding line, providing a data basis for load identification.
本发明中,测试工作站上存储有大量的负载特征曲线,运行测试软件,并具有测试方案编辑与执行的功能。根据测试需要,建立以一个或多个测试用例组成的测试方案,并在测试时,通过测试软件以报文将对应ID的“负载特征曲线编排列表”下发给对应电子负载。In the present invention, a large number of load characteristic curves are stored on the testing workstation, and testing software is run, and has the functions of editing and executing test schemes. According to the test needs, a test plan consisting of one or more test cases is established, and during the test, the "load characteristic curve arrangement list" corresponding to the ID is sent to the corresponding electronic load through the test software in a message.
附图说明Description of drawings
图1为本发明的结构示意图;Fig. 1 is a structural representation of the present invention;
图2为本发明中测量设备接入工装的原理图;Fig. 2 is the schematic diagram of measuring equipment access frock in the present invention;
图3为应用本测试系统和测试方法的流程图。Fig. 3 is a flow chart of applying the testing system and testing method.
具体实施方式detailed description
下面结合实施例,对本发明进一步说明,下述实施例是说明性的,不是限定性的,不能以下述实施例来限定本发明的保护范围。Below in conjunction with the examples, the present invention is further described, the following examples are illustrative, not limiting, and the protection scope of the present invention cannot be limited by the following examples.
一种低压用户负荷识别测试系统,包括低压电网,本发明的创新在于,在该低压电网的三相电源的主路内安装有低压断路器3,所述三相电源的二次出口端并联有多个电子负载1,在低压断路器和每个电子负载的之路上均安装有一接入工装2,每个所述的接入工装均设置有接口用于与外部的测试设备连接,各个所述的电子负载分别和一测试工作站4实现数据互通,用于配置电子负载的大小。A low-voltage user load identification test system includes a low-voltage power grid. The innovation of the present invention is that a low-
本实施例中,每个所述的电子负载内均存储最多500个负载特征曲线,并按负荷曲线列表的方式动态调整负载大小,所述的负荷曲线列表由测试工作站下发。In this embodiment, each electronic load stores up to 500 load characteristic curves, and dynamically adjusts the size of the load according to the load curve list, and the load curve list is issued by the test workstation.
本实施例中,每个负载特征曲线均通过唯一的负载特征曲线标识ID标示,每个负载特征曲线均包括“负载曲线数据时间长度”和“负载曲线数据”。In this embodiment, each load characteristic curve is marked by a unique load characteristic curve ID, and each load characteristic curve includes "load curve data time length" and "load curve data".
本实施例中,所述接入工装通过50/5的CT接入对应线路的3相电流,并直接引入对应线路的电压信号。In this embodiment, the access tool is connected to the 3-phase current of the corresponding line through the 50/5 CT, and directly introduces the voltage signal of the corresponding line.
本实施例中,所述测试工作站内存储有负载特征曲线,并内置运行测试软件,该测试软件具有测试方案编辑与执行能力的功能。In this embodiment, the test workstation stores load characteristic curves and built-in running test software, and the test software has the function of editing and executing test schemes.
本实施例中,所述的电子负载与以太交换器5连通,并经该以太交换器与测试工作站实现数据互通。In this embodiment, the electronic load communicates with the Ethernet
本发明的工作过程是:Working process of the present invention is:
本发明使用时,即应用一种低压用户负荷识别测试系统的测试方法,包括准备步骤和测试步骤。When the present invention is used, a test method of a low-voltage user load identification test system is applied, including preparation steps and test steps.
所述准备步骤如下:The preparatory steps described are as follows:
步骤1:根据需要测试或需要验证的负荷识别算法选取适应数量的支路和电子负载;Step 1: Select the appropriate number of branches and electronic loads according to the load identification algorithm that needs to be tested or verified;
步骤2:将相应支路和电子负载依据测试系统的结构进行构建;Step 2: Construct the corresponding branch circuit and electronic load according to the structure of the test system;
步骤3:将待测仪表与电子负载和低压断路器分别接入;Step 3: Connect the instrument to be tested with the electronic load and the low-voltage circuit breaker respectively;
该步骤中,待测仪表接入时,必须在停电的情况下拔下短接片,将电流接入端子连接到仪器的电流输入端,将电压接入段端子连接到仪器的电压输入端。In this step, when the instrument to be tested is connected, the shorting piece must be pulled out in the event of a power failure, the current access terminal is connected to the current input terminal of the instrument, and the voltage access section terminal is connected to the voltage input terminal of the instrument.
步骤4:待上述准备步骤完毕后进行运行测试检查是否存在短路等故障,如不存在相应故障则可进行后续测试步骤。Step 4: After the above preparatory steps are completed, conduct a running test to check whether there are faults such as short circuits. If there is no corresponding fault, you can proceed to the subsequent test steps.
所述测试步骤如下:The test steps are as follows:
步骤1:操作人员通过上位机向测试工作站输入命令。Step 1: The operator inputs commands to the test workstation through the host computer.
步骤2:测试工作站根据命令制定测试方案;Step 2: The test workstation formulates a test plan according to the command;
所述步骤2中的测试方案由一个或多个测试用例组成。The test scheme in
步骤3:测试时,测试软件通过报文将对应ID的“负载特征曲线编排列表”下发给对应电子负载。Step 3: During the test, the test software sends the "load characteristic curve arrangement list" corresponding to the ID to the corresponding electronic load through the message.
步骤4:电子负载按报文要求启动时间启动,依次按“负载特征曲线标识ID1”对应的“负载曲线数据”改变负载大小,并按次数循环,直到报文中所有的曲线均执行完成。Step 4: The electronic load is started according to the start time required by the message, and the load size is changed according to the "load curve data" corresponding to the "load characteristic curve ID1" in turn, and cycled according to the number of times until all the curves in the message are executed.
所述测试用例包括各个电子负载“负载特征曲线编排列表”,格式为:电子负载ID,启动时间,“负载特征曲线标识ID1”,次数,“负载特征曲线标识ID2”,次数,“负载特征曲线标识ID3”,次数…“负载特征曲线标识IDn-1”,次数,“负载特征曲线标识IDn”。The test case includes each electronic load "load characteristic curve arrangement list", the format is: electronic load ID, start time, "load characteristic curve identification ID1", times, "load characteristic curve identification ID2", times, "load characteristic curve Identification ID3", number of times..."load characteristic curve identification IDn-1", times, "load characteristic curve identification IDn".
本发明中,测试系统由三相低压电网供电,通过低压断路器给一系列电子负载供电。在低压断路器以及各个电子负载支路上,均安装了测量设备的接入工装,方便待测仪器/仪表的接入。电子负载通过以太交换器与测试工作站联网。In the present invention, the test system is powered by a three-phase low-voltage grid, and supplies power to a series of electronic loads through a low-voltage circuit breaker. On the low-voltage circuit breaker and each electronic load branch, the access tooling of the measuring equipment is installed to facilitate the access of the instrument/meter to be tested. The electronic load is connected to the test workstation through the Ethernet switch.
本发明中,采用低压断路器将测试环境与低压电网的隔离,配置有过流保护,如果测试环境发生短路等故障,低压断路器将自动跳闸,以隔离测试环境对电网的影响。In the present invention, a low-voltage circuit breaker is used to isolate the test environment from the low-voltage power grid, and overcurrent protection is configured. If a fault such as a short circuit occurs in the test environment, the low-voltage circuit breaker will automatically trip to isolate the influence of the test environment on the power grid.
本发明中,电子负载以及相应支路的数量可根据需要灵活配置,其中电子负载内部可以存储可以按负荷曲线列表的方式动态调整负载大小,负荷曲线列表可以由测试工作站在测试以报文形式前下发。电子负载按报文要求启动时间启动,依次按“负载特征曲线标识ID1”对应的“负载曲线数据”改变负载大小,并按次数循环,直到报文中所有的曲线均执行完成。In the present invention, the number of electronic loads and corresponding branches can be flexibly configured according to needs, wherein the electronic load can store internally and dynamically adjust the load size in the form of a load curve list, and the load curve list can be used by the test workstation before testing in the form of a message Issued. The electronic load is started according to the start time required by the message, and the load size is changed according to the "load curve data" corresponding to the "load characteristic curve ID1" in turn, and the cycle is repeated according to the number of times until all the curves in the message are executed.
本发明中,接入工装通过50/5的CT接入对应线路的3相电流,并直接引入对应线路的电压信号,实现对应线路全电流、电压信号的接入。待测仪器/仪表接入测控设备接入工装,可以实现对应线路电气数据的采集,进而获取对应线路的电气数据的瞬时特性或稳态特性,为负荷识别提供数据基础。In the present invention, the access tool accesses the 3-phase current of the corresponding line through the 50/5 CT, and directly introduces the voltage signal of the corresponding line to realize the access of the full current and voltage signal of the corresponding line. The instrument/instrument to be tested is connected to the measurement and control equipment and connected to the tooling, which can realize the collection of electrical data of the corresponding line, and then obtain the instantaneous characteristics or steady-state characteristics of the electrical data of the corresponding line, providing a data basis for load identification.
本发明中,测试工作站上存储有大量的负载特征曲线,运行测试软件,并具有测试方案编辑与执行的功能。根据测试需要,建立以一个或多个测试用例组成的测试方案,并在测试时,通过测试软件以报文将对应ID的“负载特征曲线编排列表”下发给对应电子负载。In the present invention, a large number of load characteristic curves are stored on the testing workstation, and testing software is run, and has the functions of editing and executing test schemes. According to the test needs, a test plan consisting of one or more test cases is established, and during the test, the "load characteristic curve arrangement list" corresponding to the ID is sent to the corresponding electronic load through the test software in a message.
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