CN103105550B - A kind of intelligent relay protection device detection method and system - Google Patents

A kind of intelligent relay protection device detection method and system Download PDF

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CN103105550B
CN103105550B CN201310011274.6A CN201310011274A CN103105550B CN 103105550 B CN103105550 B CN 103105550B CN 201310011274 A CN201310011274 A CN 201310011274A CN 103105550 B CN103105550 B CN 103105550B
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relay protection
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protection device
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CN103105550A (en
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张侃君
陈磊
夏勇军
胡刚
王婷
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WUHAN FANGYUAN DONGLI ELECTRIC POWER TECHNOLOGY CENTER
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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WUHAN FANGYUAN DONGLI ELECTRIC POWER TECHNOLOGY CENTER
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272Apparatus, systems or circuits therefor
    • G01R31/3274Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance

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Abstract

本发明提供一种智能化继电保护装置检测方法及系统,其针对现有技术无法在智能变电站现场对继电保护装置动态性能进行有效检测的情况,从智能变电站二次系统数字化、信息化共享的特点出发,提出一种以数字仿真系统为数据源、多台数字化继电保护测试仪同步工作为检测手段的检测方法,并组建了智能化继电保护装置检测系统。本发明可在实验室中根据智能变电站实际电气拓扑结构及设备参数构建仿真模型,模拟变电站内可能发生的各种运行工况,进行仿真计算并转换得到与实际运行工况相似度较高的暂态测试数据,在智能变电站现场“回放”输出暂态测试数据,开展继电保护装置动态性能测试和保护定值的校验工作。

The invention provides an intelligent relay protection device detection method and system, aiming at the fact that the existing technology cannot effectively detect the dynamic performance of the relay protection device at the intelligent substation site, from the digitalization and information sharing of the secondary system of the intelligent substation Based on the characteristics of the system, a detection method is proposed, which uses the digital simulation system as the data source and multiple digital relay protection testers work synchronously as the detection means, and builds an intelligent relay protection device detection system. The invention can construct a simulation model in the laboratory according to the actual electrical topology structure and equipment parameters of the intelligent substation, simulate various operating conditions that may occur in the substation, perform simulation calculations and convert them to obtain a temporary model with a high similarity to the actual operating conditions. State test data, "playback" output transient test data at the smart substation site, and carry out dynamic performance test of relay protection device and verification of protection setting value.

Description

一种智能化继电保护装置检测方法及系统A detection method and system for an intelligent relay protection device

技术领域technical field

本发明涉及数模混合仿真试验及智能变电站试验技术领域,具体是一种智能化继电保护装置检测方法及系统。The invention relates to the technical field of digital-analog hybrid simulation test and intelligent substation test, in particular to a detection method and system for an intelligent relay protection device.

背景技术Background technique

智能电网的建设已成为国家的发展战略,智能变电站逐步取代传统的变电站综合自动化变电站势在必行;目前,智能变电站已进入到推广应用阶段。与传统变电站相比,智能变电站二次设备的结构以及设备之间的信息传输方式发生了较大变化,导致智能化二次设备检测技术发生了相应的改变。现有的智能化继电保护装置检测方法和系统主要有三种,如下:The construction of smart grid has become a national development strategy, and it is imperative for smart substations to gradually replace traditional substation integrated automation substations; at present, smart substations have entered the stage of promotion and application. Compared with the traditional substation, the structure of the secondary equipment of the smart substation and the information transmission method between the equipment have undergone great changes, resulting in corresponding changes in the detection technology of the intelligent secondary equipment. There are three main detection methods and systems for existing intelligent relay protection devices, as follows:

1、数字化继电保护测试仪1. Digital relay protection tester

数字化继电保护测试仪是目前使用最多的智能化继电保护装置检测装置,能够输出符合IEC61850以及IEC60044-8规范的数字报文,并可以在输出信号中加入谐波、直流分量等成分,在智能变电站现场对智能化继电保护装置进行检测,具有携带方便、检测功能多、使用广泛等优点。但是,数字化继电保护测试仪输出的测试数据无法模拟变电站部分工况下电气量的暂态过程,因此不能对智能化继电保护装置开展有效的动态性能试验。The digital relay protection tester is currently the most widely used intelligent relay protection device detection device. It can output digital messages in compliance with IEC61850 and IEC60044-8 specifications, and can add harmonics, DC components and other components to the output signal. The intelligent relay protection device is tested on site in the smart substation, which has the advantages of easy portability, multiple detection functions, and wide use. However, the test data output by the digital relay protection tester cannot simulate the transient process of electrical quantities under some working conditions in substations, so it is impossible to carry out effective dynamic performance tests on intelligent relay protection devices.

2、基于IEC61850标准的数字化保护动模测试系统2. Digital protection dynamic model test system based on IEC61850 standard

动模实验室按照实际电力系统模型进行设计、建造,可提供比较接近实际的运行环境,是检测继电保护装置的良好平台,数字化改造后的动模测试系统可以将试验数据转换为符合IEC61850规范的报文数据,对智能化二次设备进行动态性能测试和研究。但是,动模测试系统投资大、占地广,受试验系统结构和规模的限制,试验对象有较大的局限性、试验灵活性较差,并且无法在智能变电站现场开展检测工作。The dynamic model laboratory is designed and built according to the actual power system model, which can provide a relatively close to the actual operating environment. It is a good platform for testing relay protection devices. The digitally transformed dynamic model test system can convert test data into compliance with IEC61850 specifications Carry out dynamic performance testing and research on intelligent secondary equipment. However, the dynamic model test system requires a large investment and occupies a large area. Due to the limitation of the structure and scale of the test system, the test objects have relatively large limitations, and the test flexibility is poor, and it is impossible to carry out testing work in the smart substation site.

3、基于IEC61850标准的数字仿真测试系统3. Digital simulation test system based on IEC61850 standard

基于IEC61850的数字仿真系统可以根据智能变电站实际电气拓扑结构及设备参数构建仿真模型,模拟变电站内可能发生的各种运行工况,对智能化二次设备进行动态性能检测;变电站拓扑结构及设备参数发生改变时,在仿真软件中对模型进行修改,无需增加或改变硬件设备,灵活性较高。但是,该试验系统仅可以在实验室内开展检测工作。The digital simulation system based on IEC61850 can build a simulation model according to the actual electrical topology structure and equipment parameters of the smart substation, simulate various operating conditions that may occur in the substation, and perform dynamic performance detection on the intelligent secondary equipment; the topology structure and equipment parameters of the substation When changes occur, the model can be modified in the simulation software without adding or changing hardware devices, and the flexibility is high. However, the test system can only carry out detection work in the laboratory.

综上所述,数字化继电保护测试仪虽然可以在变电站现场对智能化继电保护装置开展稳态性能试验,但是无法开展有效的动态性能试验;基于IEC61850标准的数字化保护动模测试系统以及数字仿真测试系统虽然可以对智能化继电保护装置开展动态性能试验,但是不能够在智能变电站现场开展相应的试验工作。In summary, although the digital relay protection tester can carry out steady-state performance tests on intelligent relay protection devices at the substation site, it cannot carry out effective dynamic performance tests; the digital protection dynamic model test system based on the IEC61850 standard and the digital Although the simulation test system can carry out dynamic performance tests on intelligent relay protection devices, it cannot carry out corresponding tests in the field of intelligent substations.

发明内容Contents of the invention

针对现有检测方法和检测设备无法在智能变电站现场对继电保护装置进行有效动态性能检测的现状,本发明提出了一种智能化继电保护装置检测方法,并组建了检测系统。该方法及系统可以根据智能变电站电气拓扑结构和设备参数构建仿真模型,模拟变电站现场可能发生的各种运行工况,进行仿真计算并转换得到与实际运行工况相似度较高的暂态测试数据,在智能变电站现场开展继电保护装置动态性能检测和保护定值的校验工作,该方法及系统解决了目前检测方法存在的缺陷。Aiming at the current situation that the existing detection methods and detection equipment cannot perform effective dynamic performance detection on the relay protection device at the intelligent substation site, the present invention proposes a detection method for the intelligent relay protection device and establishes a detection system. The method and system can build a simulation model according to the electrical topology structure and equipment parameters of the smart substation, simulate various operating conditions that may occur on the substation site, perform simulation calculations and convert them to obtain transient test data with a high degree of similarity to the actual operating conditions , the dynamic performance detection of relay protection devices and the verification of protection fixed values are carried out on the site of intelligent substations. This method and system solve the defects existing in the current detection methods.

本发明提供一种智能化继电保护装置检测方法,包括如下步骤:The invention provides a detection method for an intelligent relay protection device, comprising the following steps:

步骤1:搜集智能变电站现场资料,所述现场资料包括变电站拓扑结构、一次设备参数和电流/电压互感器变比等,并根据检测需求制定相应的试验方案,试验方案的内容包括检测项目、检测范围、故障点设置、故障类型和测试输出数据类型;Step 1: Collect on-site data of smart substations. The on-site data include substation topology, primary equipment parameters, and current/voltage transformer ratio, etc., and formulate corresponding test plans according to testing requirements. The contents of the test plans include testing items, testing Range, fault point setting, fault type and test output data type;

步骤2:根据现场资料构建智能变电站一次系统仿真模型,设置仿真数据输出通道,保证仿真输出测试数据与试验需求相符;Step 2: Construct the primary system simulation model of the smart substation according to the field data, set the simulation data output channel, and ensure that the simulation output test data conforms to the test requirements;

步骤3:在数字仿真试验系统中,使用所述仿真模型对智能变电站各种运行工况进行仿真计算,并输出暂态仿真数据;Step 3: In the digital simulation test system, use the simulation model to perform simulation calculations on various operating conditions of the smart substation, and output transient simulation data;

步骤4:将暂态仿真数据转换为符合IEC61850协议的报文数据,该数据为变电站保护装置所能够识别的报文数据,可以是符合IEC61850-9-2协议的数据;Step 4: Convert the transient simulation data into message data conforming to the IEC61850 protocol, which is message data that can be recognized by the substation protection device, and may be data conforming to the IEC61850-9-2 protocol;

步骤5:存储设备中导入变电站全站配置文件(SubstationConfiguration Description,SCD),将以上步骤生成的报文数据按照SCD的配置进行存储,如有需要可以转换为COMTRADE格式的录波文件进行存储,存储的数据即为暂态测试数据;Step 5: Import the substation configuration file (Substation Configuration Description, SCD) into the storage device, and store the message data generated in the above steps according to the configuration of the SCD. If necessary, it can be converted into a COMTRADE format recording file for storage. The data is the transient test data;

步骤6:将存储的数据携带至测试现场,转存至参与测试工作的数字化继电保护测试仪设备中;Step 6: Carry the stored data to the test site and transfer to the digital relay protection tester equipment involved in the test work;

步骤7:利用时钟同步设备向参与测试工作的数字化继电保护测试仪发送对时信号,确保测试数据可以同步输出;Step 7: Use the clock synchronization device to send a time synchronization signal to the digital relay protection tester participating in the test to ensure that the test data can be output synchronously;

步骤8:根据变电站全站配置文件(SCD)配置各台数字化继电保护测试仪的输出,在同步信号的协调下,在智能变电站现场同步输出暂态测试数据;根据检测需求可以选择输出测试数据的类型:需要输出测试数据至对应的合并单元时,设置测试仪输出符合IEC60044-8协议的报文数据,如果需要输出测试数据至对应的智能化继电保护装置,则输出符合IEC61850-9-2协议的报文数据;Step 8: Configure the output of each digital relay protection tester according to the substation-wide configuration file (SCD), and under the coordination of the synchronization signal, output the transient test data synchronously at the smart substation site; output test data can be selected according to the detection requirements Type: When it is necessary to output test data to the corresponding merging unit, set the tester to output message data conforming to the IEC60044-8 protocol. If it is necessary to output the test data to the corresponding intelligent relay protection device, the output conforms to IEC61850-9- 2 protocol message data;

步骤9:考核智能化继电保护装置的动态性能、校验相关保护定值和检测二次回路的正确性。Step 9: Assess the dynamic performance of the intelligent relay protection device, check the relevant protection settings and check the correctness of the secondary circuit.

如上所述的智能化继电保护装置检测方法,所述步骤9具体为:判断是否检测全站二次回路或全站联调,In the above-mentioned intelligent relay protection device detection method, the step 9 is specifically: judging whether to detect the secondary circuit of the whole station or the joint debugging of the whole station,

如果判断结果为是,则执行步骤91:数字化继电保护测试仪输出符合IEC60044-8协议的报文数据至合并单元,然后执行步骤92:进行智能化继电保护装置动态性能、保护定值和二次回路的检测;If the judgment result is yes, go to step 91: the digital relay protection tester outputs the message data conforming to the IEC60044-8 protocol to the merging unit, and then go to step 92: check the dynamic performance of the intelligent relay protection device, protection setting and Detection of the secondary circuit;

如果判断结果为否,则执行步骤93:数字化继电保护测试仪输出符合IEC61850-9-2协议的报文数据至智能化继电保护装置,然后执行步骤94:进行保护装置动态性能、保护定值的检测。If the judgment result is no, go to step 93: the digital relay protection tester outputs message data conforming to the IEC61850-9-2 protocol to the intelligent relay protection device, and then go to step 94: check the dynamic performance and protection settings of the protection device. value detection.

如上所述的智能化继电保护装置检测方法,所述步骤1中的暂态仿真数据的仿真步长不大于250微秒;所述步骤4中转换生成的报文数据的采样率为80点/周波;步骤5中生成的录波数据的采样率不低于80点/周波。In the intelligent relay protection device detection method as described above, the simulation step size of the transient simulation data in the step 1 is not more than 250 microseconds; the sampling rate of the message data generated by conversion in the step 4 is 80 points /cycle; the sampling rate of the wave recording data generated in step 5 is not lower than 80 points/cycle.

本发明还提供一种智能化继电保护装置检测系统,包括数字仿真单元、信号转换单元、数据存储单元和测试输出单元。其中:The invention also provides an intelligent relay protection device detection system, which includes a digital simulation unit, a signal conversion unit, a data storage unit and a test output unit. in:

所述数字仿真单元,由数字仿真系统(例如:ADPSS、RTDS等)或者数字仿真软件(例如:PSCAD/EMTDC、EMTP等)构成,用于根据变电站电气拓扑结构和设备参数构建仿真模型,模拟变电站现场可能发生的各种运行工况,进行仿真计算生成暂态仿真数据。The digital simulation unit is composed of a digital simulation system (for example: ADPSS, RTDS, etc.) or digital simulation software (for example: PSCAD/EMTDC, EMTP, etc.), and is used to construct a simulation model according to the electrical topology structure and equipment parameters of the substation, and simulate the substation Perform simulation calculations to generate transient simulation data for various operating conditions that may occur on site.

所述信号转换单元,用于将数字仿真单元输出的暂态仿真数据换为符合IEC61850-9-2协议(为变电站二次设备所能识别的报文数据格式)的报文数据;The signal conversion unit is used to change the transient simulation data output by the digital simulation unit into message data conforming to the IEC61850-9-2 protocol (a message data format that can be recognized by substation secondary equipment);

所述数据存储单元,用于将信号转换单元生成的报文数据进行存储,该单元应该具有将符合IEC61850-9-2协议的报文数据转换为COMTRADE格式的录波文件的能力;The data storage unit is used to store the message data generated by the signal conversion unit, and this unit should have the ability to convert the message data conforming to the IEC61850-9-2 protocol into a wave recording file in the COMTRADE format;

所述时钟同步单元,用于对多台数字化继电保护测试仪进行对时,保证参与检测的所有测试仪同步发出测试数据;The clock synchronization unit is used to synchronize the time of multiple digital relay protection testers to ensure that all testers participating in the detection send out test data synchronously;

所述检测输出单元,由多台数字式继电保护测试仪组成,参与检测的测试仪在同步时钟的协调下,将数据存储单元转存过来的测试数据同步进行解析并输出至检测点,开展检测工作。可以根据检测目标和检测需求选择输出检测信号类型,如果需要输出测试数据至对应的合并单元时,设置测试仪解析出IEC60044-8协议的报文数据,如果需要输出测试数据至对应的智能化继电保护装置,则解析出IEC61850-9-2协议的报文数据。The detection output unit is composed of a plurality of digital relay protection testers. Under the coordination of the synchronous clock, the testers participating in the detection will synchronously analyze the test data transferred from the data storage unit and output it to the detection point. detection work. The type of output detection signal can be selected according to the detection target and detection requirements. If it is necessary to output the test data to the corresponding merging unit, set the tester to parse out the message data of the IEC60044-8 protocol. If it is necessary to output the test data to the corresponding intelligent relay For electrical protection devices, the message data of the IEC61850-9-2 protocol is analyzed.

如上所述的智能化继电保护装置检测系统,所述信号转换单元由物理接口箱、功率放大器、采集器和合并单元组成,数字仿真单元输出的暂态仿真数据经过物理接口箱转换为小电压信号;功率放大器将小电压信号放大为电磁式互感器二次侧电压/电流信号;采集器将电磁式互感器二次侧电压/电流信号转换为符合IEC60044-8(FT3)规约的报文数据;合并单元中导入SCD配置文件,按照SCD配置文件将采集器输出的IEC60044-8规约报文数据转换为相应的IEC61850-9-2报文数据。In the above-mentioned intelligent relay protection device detection system, the signal conversion unit is composed of a physical interface box, a power amplifier, a collector and a merging unit, and the transient simulation data output by the digital simulation unit is converted into a small voltage through the physical interface box signal; the power amplifier amplifies the small voltage signal into the secondary side voltage/current signal of the electromagnetic transformer; the collector converts the secondary side voltage/current signal of the electromagnetic transformer into message data conforming to the IEC60044-8 (FT3) protocol ; Import the SCD configuration file into the merging unit, and convert the IEC60044-8 protocol message data output by the collector into the corresponding IEC61850-9-2 message data according to the SCD configuration file.

本发明所述的基于模拟故障回放原理的智能化继电保护装置检测方法和系统的优点在于:The advantages of the intelligent relay protection device detection method and system based on the analog fault playback principle of the present invention are:

(1)本发明所述检测方法及系统可以在智能变电站中开展继电保护装置动态性能和保护定值的校验工作,该方法及系统弥补了目前检测方法存在的不是;(1) The detection method and system of the present invention can carry out the verification work of the dynamic performance of the relay protection device and the protection fixed value in the intelligent substation, and the method and system make up for the shortcomings of the current detection method;

(2)本发明所述检测方法及系统可以根据智能变电站电气拓扑结构和设备参数构建仿真模型,模拟变电站内可能发生的各种运行工况,进行仿真计算并转换得到与实际运行工况相似度较高的暂态测试数据;(2) The detection method and system of the present invention can construct a simulation model according to the electrical topology structure and equipment parameters of the smart substation, simulate various operating conditions that may occur in the substation, perform simulation calculations and convert to obtain the similarity with the actual operating conditions Higher transient test data;

(3)检测系统可以在同步时钟的协调下,使用多台数字式继电保护测试仪同步开展检测工作;测试仪模拟智能变电站现场所有的远端模块,对相应的合并单元输出测试数据,同时向变电站全站输出测试数据,开展全站协同检测。(3) The detection system can use multiple digital relay protection testers to carry out detection work synchronously under the coordination of the synchronous clock; the tester simulates all remote modules on the site of the smart substation, and outputs test data to the corresponding merging unit, and at the same time Output the test data to the whole station of the substation, and carry out the collaborative detection of the whole station.

(4)可以实现在智能变电站现场对保护装置进行保护定值及保护定值间的配合关系的校验。(4) It can realize the verification of the protection setting value and the coordination relationship between the protection setting values of the protection device at the site of the intelligent substation.

(5)将数字仿真系统功能强大、故障设置方便的优点和保护测试仪使用广泛的特点相结合,检测系统构成简单,检测方便,成本低。(5) Combining the advantages of powerful digital simulation system and convenient fault setting with the widely used characteristics of the protection tester, the detection system is simple in structure, convenient in detection and low in cost.

附图说明Description of drawings

图1为本发明智能化继电保护装置检测方法的工作流程图;Fig. 1 is the work flowchart of the detection method of the intelligent relay protection device of the present invention;

图2为本发明智能化继电保护装置检测系统的结构示意图;Fig. 2 is the structural representation of the detection system of the intelligent relay protection device of the present invention;

图3为本发明一个实施例中一次系统主接线及设备安装位置示意图;Fig. 3 is a schematic diagram of the main wiring of the primary system and the installation position of the equipment in one embodiment of the present invention;

其中,ECT表示电子式电流互感器,EVT表示电子式电压互感器,MU表示合并单元,ST表示智能终端,K表示故障点;Among them, ECT means electronic current transformer, EVT means electronic voltage transformer, MU means merging unit, ST means intelligent terminal, and K means fault point;

图4为本发明一个实施例中检测系统结构及检测信号传输示意图。Fig. 4 is a schematic diagram of the detection system structure and detection signal transmission in one embodiment of the present invention.

具体实施方式Detailed ways

下面将结合具体实施例对本发明中的技术方案进行清楚、完整地描述。The technical solutions in the present invention will be clearly and completely described below in conjunction with specific embodiments.

本发明一个实施例中智能变电站一次系统主接线及设备安装位置示意图如图3所示,所述智能变电站为一个220kV智能变电站试验系统,系统配置有后台监控装置,二次设备单套配置,并且保护装置采用直采直跳组网方式;所述智能变电站现场过程层设备包括6台电子式电压互感器(EVT)、6台电子式电流互感器(ECT)、7台合并单元(MU)、6台智能终端(ST)组成,各台过程层设备安装位置及对应关系如图3所示。The schematic diagram of the main wiring and equipment installation position of the primary system of the smart substation in an embodiment of the present invention is shown in Figure 3. The smart substation is a 220kV smart substation test system, the system is equipped with a background monitoring device, and a single set of secondary equipment is configured, and The protection device adopts the direct mining and direct jumping networking mode; the on-site process layer equipment of the intelligent substation includes 6 electronic voltage transformers (EVT), 6 electronic current transformers (ECT), 7 merging units (MU), It consists of 6 intelligent terminals (ST), and the installation position and corresponding relationship of each process layer equipment are shown in Figure 3.

所述试验系统需要进行全站二次回路检测和二次系统联调,所以制定试验方案如下:The test system needs to carry out the secondary circuit detection of the whole station and the joint debugging of the secondary system, so the test plan is formulated as follows:

(1)使用7台同型号的(PNF-801)数字式继电保护测试仪(编号为PNF1-PNF7)模拟12台远端模块(ECT1-ECT6、EVT1-EVT6)向7台合并单元(MU1-MU7)输出试验数据,测试数据格式符合IEC60044-8规约。(1) Use 7 digital relay protection testers (number PNF1-PNF7) of the same model (PNF-801) to simulate 12 remote modules (ECT1-ECT6, EVT1-EVT6) to 7 merging units (MU1) -MU7) output test data, the test data format conforms to the IEC60044-8 protocol.

(2)本发明实施例主要考核低压侧后备保护定值及其与主变保护定值的配合,所以,设置主变低压侧不同位置发生各种类型的短路故障(故障点设置如图3中的K1-K6),检测保护暂态特性及校核低压侧后备保护、主变保护定值。(2) The embodiment of the present invention mainly examines the low-voltage side backup protection setting and its coordination with the main transformer protection setting. Therefore, various types of short-circuit faults occur at different positions on the main transformer low-voltage side (fault points are set as shown in Figure 3 K1-K6), detect the transient characteristics of the protection and check the low-voltage side backup protection and main transformer protection settings.

(3)检测系统中数据存储单元需要将获取的IEC61850-9-2报文数据转换为COMTRADE格式的录波文件。(3) The data storage unit in the detection system needs to convert the obtained IEC61850-9-2 message data into a COMTRADE format recording file.

本发明智能化继电保护装置检测系统其中一个实施例包括数字仿真单元、信号转换单元、数据存储单元、时间同步单元和测试输出单元。智能化继电保护装置检测系统结构及检测信号传输示意图如图4所示,其中:One embodiment of the intelligent relay protection device detection system of the present invention includes a digital simulation unit, a signal conversion unit, a data storage unit, a time synchronization unit and a test output unit. The schematic diagram of the detection system structure and detection signal transmission of the intelligent relay protection device is shown in Figure 4, where:

所述数字仿真单元,由ADPSS仿真系统组成,包括ADPSS仿真软件、服务器硬件、终端工作站以及其他辅助设备。根据智能变电站一次设备参数(包括电流/电压互感器变比及安装位置)在ADPSS仿真系统中构建仿真模型,制定试验方案,进行仿真计算,输出暂态仿真数据(数字量)。试验方案包括检测项目、检测范围、故障点及故障类型和测试输出数据类型等,例如,故障点选择如图3所示的K1-K6。The digital simulation unit is composed of ADPSS simulation system, including ADPSS simulation software, server hardware, terminal workstation and other auxiliary equipment. According to the primary equipment parameters of the smart substation (including the current/voltage transformer ratio and installation location), the simulation model is constructed in the ADPSS simulation system, the test plan is formulated, the simulation calculation is performed, and the transient simulation data (digital quantity) is output. The test plan includes detection items, detection range, fault point and fault type, and test output data type, etc. For example, the fault point selection is K1-K6 as shown in Figure 3.

所述信号转换单元,由物理接口箱、功率放大器、采集器和合并单元组成。数字仿真单元输出的暂态仿真数据(数字量)经过物理接口箱转换为小电压信号(0-10V);功率放大器将小电压信号放大为电磁式互感器二次侧电压/电流信号(电压量程为100V、电流量程为5A/1A);采集器将电磁式互感器二次侧电压/电流信号转换为符合IEC60044-8(FT3)规约的报文数据;合并单元中导入SCD配置文件,按照SCD配置文件将采集器输出的IEC60044-8规约报文数据转换为相应的IEC61850-9-2报文数据。The signal converting unit is composed of a physical interface box, a power amplifier, a collector and a merging unit. The transient simulation data (digital quantity) output by the digital simulation unit is converted into a small voltage signal (0-10V) through the physical interface box; the power amplifier amplifies the small voltage signal into the secondary side voltage/current signal of the electromagnetic transformer (voltage range is 100V, and the current range is 5A/1A); the collector converts the secondary side voltage/current signal of the electromagnetic transformer into message data conforming to the IEC60044-8 (FT3) protocol; imports the SCD configuration file into the merging unit, according to the SCD The configuration file converts the IEC60044-8 protocol message data output by the collector into the corresponding IEC61850-9-2 message data.

所述数据存储单元,主要由网络分析仪组成,该网络分析仪具有报文分析和故障录波功能;本实施例中,网络分析仪将信号转换单元输出的IEC61850-9-2报文数据转变为COMTRADE格式的录波文件进行存储。Described data storage unit, mainly is made up of network analyzer, and this network analyzer has message analysis and fault recording function; In the present embodiment, network analyzer converts the IEC61850-9-2 message data of signal conversion unit output Store the wave recording files in COMTRADE format.

所述测试输出单元,包括7台同型号的数字化继电保护测试仪。数字化继电保护测试仪中导入SCD配置文件和录波文件后进行数据通道配置;经过B码对时后,7台测试仪均设置为过零点启动,同步输出符合IEC60044-8规约的测试数据至合并单元(MU1-MU7),数字化继电保护测和合并单元一一对应关系如图4所示。The test output unit includes 7 digital relay protection testers of the same model. After importing the SCD configuration file and wave recording file into the digital relay protection tester, configure the data channel; after B code time synchronization, all 7 testers are set to start at zero crossing, and synchronously output the test data conforming to the IEC60044-8 protocol to The merging unit (MU1-MU7), the one-to-one correspondence between the digital relay protection test and the merging unit is shown in Figure 4.

所述时钟同步单元,包括同步时钟系统及光纤若干,时钟同步系统采用B码对时方式向7台数字式继电保护测试仪发送对时信号。The clock synchronization unit includes a synchronization clock system and several optical fibers. The clock synchronization system sends time synchronization signals to 7 digital relay protection testers in a B code time synchronization mode.

以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何属于本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any changes or substitutions that can be easily imagined by those skilled in the art within the technical scope disclosed in the present invention, All should be covered within the protection scope of the present invention.

Claims (4)

1. an intelligent relay protection device detection method, is characterized in that comprising the following steps:
Step 1: the in-situ data collecting intelligent substation, described in-situ data comprises topological structure, the device parameter of intelligent substation, and formulate corresponding testing program according to detection demand, the content of testing program comprises test item, sensing range, trouble spot setting, fault type and test and exports data type;
Step 2: build intelligent substation data primary system realistic model with reference to in-situ data, emulated data output channel is set, ensure that simulation data test data conforms to test demand;
Step 3: in Digital Simulation pilot system, uses described realistic model to carry out simulation calculation to the various operating condition of intelligent substation, exports transient state simulation data;
Step 4: transient state simulation data is converted to the message data meeting IEC 61850-9-2 agreement;
Step 5: the message data meeting IEC 61850-9-2 agreement above step generated stores, and the recorded wave file as required described message data being converted to COMTRADE form stores, and the data of storage are transient test data;
Step 6: the transient test data of storage are carried into test site, unloading is in the digital relay protection tester participating in test job;
Step 7: signal when utilizing clock synchronization device to send pair to the digital relay protection tester participating in test job, guarantees that test data can synchronism output;
Step 8: configure the output of each digitizing relay-protection tester according to intelligent substation configuration file of entirely standing, time described in step 7 pair signal coordination under synchronism output transient test data; The type outputed test data can be selected: when needing the merge cells outputed test data to correspondence according to detection demand, digital relay protection tester is set and exports the message data meeting IEC 60044-8 agreement, if need to output test data to the intelligent relay protection device of correspondence, then export the message data meeting IEC 61850-9-2 agreement;
Step 9: the dynamic property of examination intelligent relay protection device, the relevant correctness protected definite value and detect secondary circuit of verification.
2. intelligent relay protection device detection method as claimed in claim 1, is characterized in that: described step 9 is specially: judge whether to detect full station secondary circuit or uniting and adjustment of entirely standing,
If judged result is yes, then perform step 91: the output of digital relay protection tester meets the message data of IEC 60044-8 agreement to merge cells, then performs step 92: the detection carrying out intelligent relay protection device dynamic property, protection definite value and secondary circuit;
If judged result is no; then perform step 93: the output of digital relay protection tester meets the message data of IEC 61850-9-2 agreement to intelligent relay protection device, then performs step 94: the detection carrying out intelligent relay protection device dynamic property, protection definite value.
3. an intelligent relay protection device detection system, is characterized in that: comprise Digital Simulation unit, signal conversion unit, data storage cell, clock synchronization unit and test output unit, wherein:
Described Digital Simulation unit, for building realistic model, contingent various operating condition in imitating substation according to the electric topology structure of intelligent substation and device parameter, carrying out simulation calculation and exporting transient state simulation data;
Described signal conversion unit, is converted to for the transient state simulation data exported by Digital Simulation unit the message data meeting IEC 61850-9-2 agreement;
Described data storage cell, stores for the message data generated by signal conversion unit, and this unit should have the ability message data meeting IEC 61850-9-2 agreement being converted to the recorded wave file of COMTRADE form;
Described clock synchronization unit, during for carry out multiple stage digital relay protection tester pair, ensures that all testers participating in detecting synchronously send test data;
Described test output unit, be made up of multiple stage digital relay protection tester, participate in test digital relay protection tester pair time signal coordination under, after the message data stored in data storage cell is resolved, synchronism output test data, to check point, carries out testing;
The test data that described test output unit exports has two classes; the type outputed test data can be selected: when needing to export test data to merge cells according to detection demand; digital relay protection tester is set and exports the message data meeting IEC 60044-8 agreement; if need test data to be exported to corresponding intelligent relay protection device, then export the message data meeting IEC 61850-9-2 agreement.
4. intelligent relay protection device detection system as claimed in claim 3, it is characterized in that: described signal conversion unit is made up of physical interface case, power amplifier, collector and merge cells, the transient state simulation data that Digital Simulation unit exports is converted to small voltage signal through physical interface case; Small voltage signal is enlarged into electromagnetic transformer secondary side voltage/current signals by power amplifier; Electromagnetic transformer secondary side voltage/current signals is converted to the message data meeting IEC 60044-8 (FT3) stipulations by collector; Import SCD configuration file in merge cells, the IEC 60044-8 stipulations message data exported by collector according to SCD configuration file is converted to corresponding IEC 61850-9-2 message data.
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