WO2014194518A1 - Digital power source based on iec61850-9 sampling value and detection method thereof - Google Patents

Digital power source based on iec61850-9 sampling value and detection method thereof Download PDF

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WO2014194518A1
WO2014194518A1 PCT/CN2013/076945 CN2013076945W WO2014194518A1 WO 2014194518 A1 WO2014194518 A1 WO 2014194518A1 CN 2013076945 W CN2013076945 W CN 2013076945W WO 2014194518 A1 WO2014194518 A1 WO 2014194518A1
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module
digital
message
power source
processing unit
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PCT/CN2013/076945
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French (fr)
Chinese (zh)
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许扬
孙健
杨志新
黄奇峰
王忠东
李澄
汤汉松
王磊
罗强
黄洪涛
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国家电网公司
江苏省电力公司
江苏省电力公司电力科学研究院
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Priority to PCT/CN2013/076945 priority Critical patent/WO2014194518A1/en
Publication of WO2014194518A1 publication Critical patent/WO2014194518A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the preceding groups
    • G01R35/04Testing or calibrating of apparatus covered by the preceding groups of instruments for measuring time integral of power or current

Abstract

A digital power source based on an IEC61850-9 sampling value and an implementation method thereof. The digital power source comprise a central processing unit, a temperature-compensation crystal oscillator, a packet sending module, and a pulse receiving module, wherein the central processing unit comprises a standard calculation module, a packet control module, and an error calculation module. Standard electric energy and electrical measurement parameters are obtained for a packet sent by the packet sending module through the standard calculation module, and are compared with electric energy obtained by the pulse receiving module or another electrical parameter receiving module to obtain a measurement value error. The digital power source can accurately simulate the field situation, provide a function of simulating and testing packets of various types on field, provide good detection means for a digital electric energy meter or other digital secondary measurement devices to complete detection for the digital electric energy meter or other digital secondary measurement devices under the actual working conditions, thereby ensuring measurement accuracy and reliability of the digital electric energy meter or other digital secondary measurement devices under the actual working condition.

Description

一种基于 IEC61850- 9釆样值的数字功率源及其检测方法 技术领域  Digital power source based on IEC61850- 9 sample value and detection method thereof

本发明涉及一种基于 IEC61850-9釆样值的高精度、高可靠数字功率源 及其实现方法, 用于智能变电站中数字化电能表的量值溯源或其他数字化 二次设备的电气参量校准, 属于智能电网仪器设备测试领域。  The invention relates to a high-precision and high-reliability digital power source based on IEC61850-9 sample value and an implementation method thereof, which are used for the traceability of the digital energy meter in the intelligent substation or the electrical parameter calibration of other digital secondary devices. Smart grid instrumentation testing field.

背景技术 Background technique

近年来, 随着智能变电站的推广应用, 电子式互感器, 合并单元以及 数字化电能表所组成的电能计量系统得到了大量应用, 对于数字化电能表 或其他数字化二次设备的校验检测工作相对滞后, 目前虽然有多家研究机 构进行了校验方法研究和校验装置研制等方面的有益尝试, 并取得了一定 成果, 但其研究成果还不够完善, 还有许多问题如溯源方法的完整性、 校 验系统技术指标等需要进行深入分析研究。  In recent years, with the promotion and application of intelligent substations, electronic energy metering systems composed of electronic transformers, merging units and digital energy meters have been widely used, and the verification and detection work for digital energy meters or other digital secondary devices is relatively lagging. At present, although many research institutes have made useful attempts in the research of calibration methods and the development of calibration devices, and have achieved certain results, their research results are still not perfect, and there are still many problems such as the integrity of traceability methods. In-depth analysis and research are required for the calibration system technical indicators.

国内其他多家机构也陆续研制了数字化电能表或其他数字化二次设备 校验系统, 并已经对外进行数字化电能表或其他数字化二次设备的测试工 作, 但这些测试工作仅仅是一种尝试性的测试, 不具备严格的计量性能溯 源和评价分析能力。  Many other domestic institutions have also developed digital electric energy meters or other digital secondary equipment verification systems, and have already carried out testing of digital electric energy meters or other digital secondary equipment, but these test work is only a tentative test. Testing, does not have strict metrological performance traceability and evaluation analysis capabilities.

数字化电能表或其他数字化二次设备校验系统常见的一种为数字功率 源, 目前对于数字功率源国内外还处于研发初期阶段, 相关技术标准还没 有制定和发布, 数字功率源的准确性和可靠性无法保证, 同时数字功率源 的检测方法还不完善, 也未能解决其溯源的问题。 对于目前数字化电能表或其他数字化二次设备校验系统, 虽然目前国 内部分研究机构已经研制了相应的校验系统, 但是校验方法以及校验装置 多种多样, 不够统一, 存在以下一个问题: A common digital power meter or other digital secondary equipment calibration system is a digital power source. At present, digital power sources are still in the initial stage of research and development at home and abroad. Relevant technical standards have not been formulated and released, and the accuracy of digital power sources is The reliability cannot be guaranteed, and the detection method of the digital power source is still not perfect, and the problem of traceability is not solved. For the current digital electric energy meter or other digital secondary equipment calibration system, although some domestic research institutions have developed corresponding calibration systems, the calibration methods and calibration devices are various and not uniform, and the following problems exist:

1 ) 数字化电能表或其他数字化二次设备校验系统技术指标还没有明 确, 还不能在严格意义上进行量值的溯源检测,  1) The technical indicators of digital energy meters or other digital secondary equipment calibration systems have not been clarified, and traceability detection of magnitude cannot be performed in a strict sense.

2 )数字化电能表或其他数字化二次设备校验系统未釆用先进的算法和 实现方式, 不具有高准确性; 同时也未釆用高可靠硬件电路, 不具备具有 高可靠性;  2) Digital energy meter or other digital secondary equipment calibration system does not use advanced algorithms and implementation methods, and does not have high accuracy; it also does not use high-reliability hardware circuits and does not have high reliability;

3 )不具有对于数字化电能表或其他数字化二次设备的计量特性的试验 研究的功能, 特别是各种现场影响因素以及实际配置情况对数字化电能表 或其他数字化二次设备计量性能的影响测试手段。  3) Does not have the function of experimental research on the measurement characteristics of digital electric energy meters or other digital secondary equipment, especially the influence of various on-site influencing factors and actual configuration on the measurement performance of digital electric energy meters or other digital secondary equipment. .

因此可以说目前数字化电能表或其他数字化二次设备测试校验系统和 试验评价方法还不够完备。  Therefore, it can be said that the current digital electric energy meter or other digital secondary equipment test verification system and test evaluation method are not complete enough.

发明内容 Summary of the invention

本发明针对上述数字化电能表或其他数字化二次设备校验设备及校验 方法和体系存在的技术缺陷, 进行了技术创新, 提出一种高精度、 高可靠 的数字功率源及其检测方法, 溯源检测方法是由报文发送模块发送的报文 经过标准计算模块得到标准的电能和电气测量参数, 并和脉冲接收模块或 其它电气参量接受模块得到的电能量比较得到其量值误差。  The invention aims at the technical defects of the above digital electric energy meter or other digital secondary equipment calibration equipment and verification method and system, and carries out technical innovation, and proposes a high-precision, high-reliability digital power source and its detection method, traceability The detection method is that the message sent by the message sending module obtains standard electrical energy and electrical measurement parameters through a standard calculation module, and is compared with the electrical energy obtained by the pulse receiving module or other electrical parameter receiving module to obtain the magnitude error.

本发明的技术方案为:  The technical solution of the present invention is:

一种基于 IEC61850-9釆样值的数字功率源, 其特征在于: 包括中央处 理单元, 与中央处理单元进行数据交互的报文发送模块, 从被测数字化电 能表接收电能计量脉冲的脉冲接收模块, 为中央处理单元和报文发送模块 提供时钟节拍的温度补偿晶体振荡器; A digital power source based on IEC 61850-9 sample values, comprising: a central processing unit, a message sending module for data interaction with a central processing unit, from the digital power to be measured a pulse receiving module capable of receiving an energy metering pulse, and a temperature compensated crystal oscillator for providing a clock tick for the central processing unit and the message transmitting module;

其中, 中央处理单元包括标准计算模块、 报文控制模块和误差计算模 块;  The central processing unit includes a standard calculation module, a message control module, and an error calculation module;

由所述报文控制模块控制所述报文发送模块发送的报文经过所述标准 计算模块计算得到标准的电能和电气测量参数, 并在所述误差计算模块中 和脉冲接收模块得到的被测数字化电能表的电能量比较得到量值误差。  Controlling, by the message control module, the message sent by the message sending module is calculated by the standard calculation module to obtain standard electrical energy and electrical measurement parameters, and is obtained in the error calculation module and the pulse receiving module. The electrical energy comparison of the digital energy meter gives a magnitude error.

所述报文发送模块以 IEC61850-9-1/2/LE规约格式向被测数字化电能 所述报文发送模块釆用锁相环控制方法以及 FPGA 全数字逻辑控制方 法, 控制报文发送时的时序, 从而保证报文发送模块报文发送时具有严格 的时序特性; 同时发送报文釆用硬件电路实现可以去除报文的抖动, 从而 确保数字功率源的高准确性, 高可靠性。  The message sending module uses the IEC61850-9-1/2/LE protocol format to send the module to the measured digitized power, the phase-locked loop control method, and the FPGA all-digital logic control method to control the sending of the message. Timing, so as to ensure that the message sending module sends a message with strict timing characteristics; while transmitting the message, the hardware circuit can remove the jitter of the message, thus ensuring high accuracy and high reliability of the digital power source.

由 GPS高精度时钟同步模块和报文发送模块控制报文发送的时序, 使 应发送的报文理论信号与真实发送的时域信号准确对应。  The GPS high-precision clock synchronization module and the message transmission module control the timing of message transmission, so that the theoretical signal of the transmitted message accurately corresponds to the real-time transmitted time domain signal.

一种基于 IEC61850-9釆样值的数字功率源检测方法, 其特征在于: 包 括以下步骤:  A digital power source detection method based on IEC61850-9 sample value, characterized in that: the following steps are included:

中央处理单元与报文发送模块进行数据交互, 其中, 中央处理单元包 括标准计算模块、 报文控制模块和误差计算模块;  The central processing unit performs data interaction with the message sending module, wherein the central processing unit includes a standard computing module, a message control module, and an error calculating module;

由所述中央处理单元中的报文控制模块控制所述报文发送模块向被测 数字电能表发送基于 IEC61850协议的报文;  Controlling, by the message control module in the central processing unit, the message sending module to send a message based on the IEC 61850 protocol to the measured digital energy meter;

脉冲接收模块从被测数字化电能表接收电能计量脉冲; 所述报文发送模块发送的报文经过所述标准计算模块计算得到标准的 电能和电气测量参数, 并在所述误差计算模块中和脉冲接收模块的电能量 比较得到量值误差。 The pulse receiving module receives the energy metering pulse from the measured digital energy meter; The message sent by the message sending module is calculated by the standard calculation module to obtain standard electrical energy and electrical measurement parameters, and the magnitude error is obtained by comparing the electrical energy of the pulse receiving module with the pulse receiving module.

所述中央处理单元和报文发送模块由温度补偿晶体振荡器提供时钟节 本发明所达到的有益效果:  The central processing unit and the message transmitting module provide clock segments by the temperature compensated crystal oscillator. The beneficial effects achieved by the present invention are as follows:

数字功率源能准确模拟现场情况, 具备现场各类报文模拟测试功能, 提供了完善的数字化电能表或其他数字化二次测量设备检测手段, 完成实 际工况下数字化电能表或其他数字化二次测量设备的检测工作, 确保数字 化电能表或其他数字化二次测量设备在实际工况下的计量准确性和可靠 性,数字功率源具备的检测数字化电能表或其他数字化二次测量设备,主要 通过数字功率源模拟高稳定的 IEC618050釆样值报文信号, 并由内部的标 准计算模块得到需要的标准电能或其他电气标准参量, 并把被测的数字化 电能表或其他数字化二次测量设备和标准参量进行比较, 并且可以在检测 过程中具备的具体功能如下:  The digital power source can accurately simulate the scene, and has various types of message simulation test functions on site. It provides a complete digital electric energy meter or other digital secondary measurement equipment detection means to complete the digital electric energy meter or other digital secondary measurement under actual working conditions. The detection of equipment ensures the measurement accuracy and reliability of digital electric energy meter or other digital secondary measuring equipment under actual working conditions. Digital power source has digital power meter or other digital secondary measuring equipment, mainly through digital power. The source simulates a highly stable IEC618050 sample message signal, and the internal standard calculation module obtains the required standard power or other electrical standard parameters, and carries out the measured digital energy meter or other digital secondary measurement equipment and standard parameters. The specific functions that can be compared and can be detected during the test are as follows:

1 )基于 GPS和高精度时钟信号来精确控制时序,保证功率源理论信号 与真实时域信号准确对应。  1) Based on GPS and high-precision clock signals to accurately control the timing, ensure that the power source theoretical signal and the real time domain signal accurately correspond.

2 )可灵活配置接口协议类型, 能够以 IEC61850-9-1/2/LE规约格式输 出釆样值报文, 覆盖国内目前所有合并单元厂家的标准协议规范。  2) The interface protocol type can be flexibly configured, and the sample value message can be output in the IEC61850-9-1/2/LE protocol format, covering the standard protocol specifications of all current merger unit manufacturers in China.

3 )支持所有数据通道的幅值, 频率, 功率因数角, 釆样率的配置, 以 满足被测对象的精度 'J试要求。  3) Support the amplitude, frequency, power factor angle, and sampling rate configuration of all data channels to meet the accuracy of the tested object.

4 )支持基波信号中叠加零漂, 谐波, 噪声, 可灵活配置叠加信号的幅 值频率和含量。 4) Support the superposition of zero drift, harmonics, noise in the fundamental signal, and flexibly configure the amplitude of the superimposed signal Value frequency and content.

5 )能够定量的模拟数字通信异常: 丟包, 连包, 误码, 状态变位, 抖 动, 以满足被测对象性能测试要求。 5) Quantitative analog digital communication anomalies: packet loss, packet loss, bit error, state shift, jitter, to meet the performance test requirements of the object under test.

6 ) 可精确控制多端口信号的发送, 发送模式可基于统一的同步信号, 也可多端口异步, 且异步时间可控, 从而解决了多光口数字化电能表的再 6) It can accurately control the transmission of multi-port signals. The transmission mode can be based on a unified synchronization signal, multi-port asynchronous, and asynchronous time controllable, thus solving the problem of multi-optical digital electric energy meter.

数字功率源的计量性能指标如下: The measurement performance indicators of digital power sources are as follows:

1 ) 量程范围, IEC61850-9-1 , 额定电压: 57. 7V , 额定电流 5A ; IEC61850-9-2/LE , 额定电压和额定电流由实际一次电压和电流情况设置。  1) Range, IEC61850-9-1, rated voltage: 57. 7V, rated current 5A; IEC61850-9-2/LE, rated voltage and rated current are set by the actual primary voltage and current conditions.

2 ) 数字功率源的功率输出误差优于 0. 02%。 数字功率源的算法为以下两种: 2) The power output error of the digital power source is better than 0.02%. The algorithms for digital power sources are as follows:

1 ) 当波形函数确定之后, 在做整周期釆样时, 每个周期得到的釆样序 列相同。 因此釆样序列的值可以事先计算, 而不用实时计算。  1) When the waveform function is determined, the sequence of samples obtained in each cycle is the same when the whole cycle is sampled. Therefore, the value of the sample sequence can be calculated in advance without real-time calculation.

2 ) 当波形函数确定之后, 在做非整周期釆样时, 为了提高系统的执行 速度, 使用三角函数计算的近似公式。  2) When the waveform function is determined, in order to improve the execution speed of the system when using the non-integral cycle, the approximate formula calculated by the trigonometric function is used.

数字功率源溯源方法是使用已经过模拟式溯源方法溯源过的标准数字 化电能表, 对数字功率源进行溯源。 附图说明  The digital power source traceability method is to trace the digital power source using a standard digital energy meter that has been traced back to the analog traceability method. DRAWINGS

图 1为数字功率源结构与测试原理图;  Figure 1 is a schematic diagram of the structure and test of the digital power source;

图 2为数字功率源测试数字化电能表接线示意图;  2 is a schematic diagram of wiring of a digital power source test digital electric energy meter;

图 3为数字功率源报文发送的时序控制原理图;  FIG. 3 is a schematic diagram of timing control of digital power source message transmission;

图 4为数字功率源内部实现原理示意图。 具体实施方式 如图 1至图 3所示, 本发明的一种基于 IEC61850-9釆样值的高精度、 高可靠数字功率源, 包括中央处理单元, 高精度温补晶振, 报文发送模块, 脉冲接收模块等。 其中中央处理单元包括标准计算模块, 报文控制模块和 误差计算模块组成。 数字功率源完成数字化电能表测试的原理图如图 1所 示, 数字功率源测试数字化电能表接线如图 2所示, 进行其他数字化二次 设备的测试图和数字化电能表测试图类似, 这里为方便起见仅以数字化电 能表来说明。 数字功率源中央控制单元中报文控制模块发送需要的报文给 标准计算模块, 标准计算模块得到需要的标准电能量, 报文控制模块的报 文通过报文发送模块发送给被测的数字化电能表, 数字功率溯源比较被测 数字化电能表的电能和标准电能得到其误差。 Figure 4 is a schematic diagram of the internal implementation principle of the digital power source. detailed description As shown in FIG. 1 to FIG. 3, the present invention is a high-precision, high-reliability digital power source based on the IEC61850-9 sample value, including a central processing unit, a high-precision temperature-compensated crystal oscillator, a message transmitting module, and a pulse receiving module. Wait. The central processing unit comprises a standard calculation module, a message control module and an error calculation module. The schematic diagram of the digital power source to complete the digital electric energy meter test is shown in Figure 1. The digital power source test digital electric energy meter wiring is shown in Figure 2. The test diagram of other digital secondary equipment is similar to the digital electric energy meter test diagram. For convenience, only digital electric energy meters are used for explanation. The message control module of the digital power source central control unit sends the required message to the standard calculation module, and the standard calculation module obtains the required standard electrical energy. The message of the message control module is sent to the measured digital energy through the message sending module. Table, digital power traceability compares the measured electrical energy of the digital energy meter with the standard electrical energy to obtain its error.

数字功率源中釆用高精度晶体振荡器,锁相控制技术以及 FPGA全数字逻辑 控制技术, 从而保证报文发送模块报文发送时具有严格的时序特性, 数字 功率源中为了控制报文发送的时序的硬件实现原理图如图 3所示。 The digital power source uses high-precision crystal oscillator, phase-locked control technology and FPGA all-digital logic control technology to ensure strict timing characteristics when the message transmission module sends packets. The digital power source controls the message transmission. The hardware implementation schematic of the timing is shown in Figure 3.

图中各模块及英文说明如下:  The modules and English descriptions in the figure are as follows:

MAC (Medium Acces s Control)模块: 介质访问控制器, 实现符合 IEEE802. 3标准的 MAC逻辑; PHY物理层模块: 对双绞线上的模拟数据进行 编码和译码; Gen Buf : 数据缓存; TxBM: 数据发送缓存; F lowContro l : 流量控制; Hos t Interface: 主机接口。  MAC (Medium Acces s Control) module: Media access controller, implements MAC logic conforming to IEEE802. 3 standard; PHY physical layer module: encodes and decodes analog data on twisted pair; Gen Buf : data buffer; TxBM : Data send buffer; F lowContro l : Flow control; Hos t Interface: Host interface.

控制报文发送的时序的硬件系统分为发送模块、 MAC状态模块、 MAC控 制模块、 时序控制模块四部分。 发送模块主要提供 MAC帧的发送功能, 其 主要操作有 MAC 帧的封装, 它直接提供了到外部物理层芯片 (PHY) 的并 行数据接口 (MI I)。 MAC 控制模块则用于执行全双工模式中的流量控制功 能。 MAC状态模块可用来监视 MAC的操作过程的各种状态信息, 并作修改。 Mi l管理模块提供了标准的 IEEE 802. 3介质独立接口 (Mi l) , 可用于连接 以太网的链路层与物理层 (PHY)。 时序控制模块釆用高精度温补晶振保证 工作时钟源的稳定性和可靠性, 同时, 釆用 FPGA时序控制能控制各个模块 的工作过程, 准确控制各个过程时间, 保证报文发送的时间间隔的稳定性。 数据功率源报文发送控制过程如下: The hardware system for controlling the timing of message transmission is divided into four parts: a transmitting module, a MAC status module, a MAC control module, and a timing control module. The sending module mainly provides the sending function of the MAC frame, and its main operation is the encapsulation of the MAC frame, which directly provides the parallel data interface (MI I) to the external physical layer chip (PHY). The MAC control module is used to perform flow control functions in full-duplex mode. can. The MAC Status module can be used to monitor various status information of the MAC's operational procedures and make modifications. The Mi l management module provides a standard IEEE 802. 3 media independent interface (Mi l) that can be used to connect the Ethernet link layer to the physical layer (PHY). The timing control module uses high-precision temperature-compensated crystal oscillator to ensure the stability and reliability of the working clock source. At the same time, FPGA timing control can control the working process of each module, accurately control each process time, and ensure the time interval of message transmission. stability. The data power source packet transmission control process is as follows:

数据功率源报文包含标准电压电流波形数据, 为广播报文, 数据报文发 送给 Gen Buf , 同时 ARP报文发送给另一个 Gen Buf , 通过时序控制, 让两 种报文交叉发送, 即发送一个数据功率源报文, 发送一个 ARP报文, 再发 数据功率源报文, 以此保证报文传送成功。  The data power source message contains the standard voltage and current waveform data, which is a broadcast message, and the data message is sent to the Gen Buf, and the ARP message is sent to another Gen Buf. Through the timing control, the two types of messages are cross-transmitted, that is, sent. A data power source packet sends an ARP packet and sends a data source packet to ensure that the packet is successfully transmitted.

MAC发送模块可将上层协议提供的数据封装之后通过 ΜΠ接口发送给 PHY。 发送模块可接收要发送的 Gen Buf 数据帧数据, 并对数据进行封装, 此过程时间为 150us。然后通过 PHY在信道空闲时通过 Mi l接口将数据以 4 位的宽度发送给 PHY, 最后由 PHY 将数据发送到网络上, 此过程时间为 250us。  The MAC sending module can encapsulate the data provided by the upper layer protocol and then send the data to the PHY through the UI interface. The sending module can receive the Gen Buf data frame data to be sent and encapsulate the data for 150us. Then, through the PHY, the data is sent to the PHY through the Mi l interface when the channel is idle, and the data is sent to the network by the PHY. The process time is 250us.

数字功率源同时发送报文釆用硬件电路实现可以去除报文的抖动, 从 而确保数字功率源的高准确性, 高可靠性。  The digital power source simultaneously transmits the message, and the hardware circuit can remove the jitter of the message, thereby ensuring high accuracy and high reliability of the digital power source.

高精度、 高可靠的数字功率源内部实现原理如图 4。  The internal implementation principle of high precision and high reliability digital power source is shown in Figure 4.

数字功率源中的主 CPU釆用 Freesca le公司的 MPC8247嵌入式微处理 器, 该处理器属于 PowerQUICC I I 系列, 包含一个基于 PowerPC MPC603e 的内核, 和一个通信处理内核 CPM。 双核设计具有强大的处理能力和较高 数字功率源中的 FPGA釆用 Xi l inx的 Spar tan3系列产品 XC3S1500,包 含有 150万个系统门, 32个专用乘法器, 4个数字时钟管理模块, 逻辑资 源丰富, 运行速度快。 基于 FPGA精确的时序控制能力, 由 FPGA完成以太 网的 MAC子层设计, MAC子层与以太网控制器的接口设计, 实现优良的以 太网数据发送时间特性。 The main CPU in the digital power source uses Freescale's MPC8247 embedded microprocessor, which belongs to the PowerQUICC II family and includes a PowerPC MPC603e-based core and a communication processing core CPM. Dual core design with powerful processing power and high The FPGA in the digital power source uses Xilinx's Spar tan3 series XC3S1500, which contains 1.5 million system gates, 32 dedicated multipliers, and 4 digital clock management modules. It has rich logic resources and fast running speed. Based on the precise timing control capability of the FPGA, the MAC sublayer design of the Ethernet, the interface between the MAC sublayer and the Ethernet controller are designed by the FPGA to achieve excellent Ethernet data transmission time characteristics.

数字功率源中的晶体振荡器选用 0CX050恒温晶振 , -40至 85度的工作 温度,小于 lppb的温漂特性, -160dBc/lKHz的低相位噪声,最大 l Oppb/year 的低老化、 高精度晶振为 PowerPC和 FPGA提供时钟节拍, 保证了系统极低 的时间误差、 时序控制的精确性, 以及长期的稳定性。  The crystal oscillator in the digital power source uses 0CX050 constant temperature crystal oscillator, -40 to 85 degrees working temperature, less than lppb temperature drift characteristic, -160dBc/lKHz low phase noise, maximum l Oppb/year low aging, high precision crystal oscillator Clock ticks for PowerPC and FPGAs ensure extremely low time error, accurate timing control, and long-term stability.

数字功率源中的以太网控制器为 Intel公司 LXT97L LXT971是单端 口 10/100M 双速快速以太控制器, 它兼容 IEEE802. 3 ; 支持 10Base5、 10Base2、 l OBaseT, 100BASE-X, 100BASE-TX, 100BASE-FX, 并能自动检测 所连接的介质, 选用 Ag i lent AFBR5803作为光纤网络收发器。  The Ethernet controller in the digital power source is the Intel LXT97L LXT971 is a single-port 10/100M two-speed fast Ethernet controller, which is compatible with IEEE802. 3; supports 10Base5, 10Base2, l OBaseT, 100BASE-X, 100BASE-TX, 100BASE -FX, and can automatically detect the connected media, choose Ag i lent AFBR5803 as the fiber optic network transceiver.

数字功率源中的应用软件基于 vxworks操作系统开发, vxworks 良好的 可靠性和卓越的实时性被广泛应用在通信、 军事、 航空、 航天等高精尖技 术及实时性要求极高的领域。  The application software in the digital power source is based on the vxworks operating system development. vxworks's good reliability and excellent real-time performance are widely used in high-tech technologies such as communication, military, aerospace, and aerospace, and in real-time requirements.

Claims

杈 利 要 求 书 要利要要
1、 一种基于 IEC61850-9釆样值的数字功率源, 其特征在于: 包括中 央处理单元, 与中央处理单元进行数据交互的报文发送模块, 从被测数字 化电能表接收电能计量脉冲的脉冲接收模块, 为中央处理单元和报文发送 模块提供时钟节拍的温度补偿晶体振荡器; 1. A digital power source based on IEC 61850-9 sample values, comprising: a central processing unit, a message sending module for data interaction with a central processing unit, and a pulse for receiving an energy metering pulse from the measured digital energy meter. a receiving module, a temperature compensated crystal oscillator that provides a clock tick for the central processing unit and the message transmitting module;
其中, 中央处理单元包括标准计算模块、 报文控制模块和误差计算模 块;  The central processing unit includes a standard calculation module, a message control module, and an error calculation module;
由所述报文控制模块控制所述报文发送模块发送的报文经过所述标准 计算模块计算得到标准的电能和电气测量参数, 并在所述误差计算模块中 和脉冲接收模块得到的被测数字化电能表的电能量比较得到量值误差。  Controlling, by the message control module, the message sent by the message sending module is calculated by the standard calculation module to obtain standard electrical energy and electrical measurement parameters, and is obtained in the error calculation module and the pulse receiving module. The electrical energy comparison of the digital energy meter gives a magnitude error.
2、 根据权利要求 1所述的基于 IEC61850-9釆样值的数字功率源, 其 特征在于: 所述报文发送模块以 IEC61850-9-1/2/LE规约格式向被测数字 化电能表输出釆样值报文。  2. The IEC 61850-9 sample-based digital power source according to claim 1, wherein: the message sending module outputs the measured digital energy meter in an IEC 61850-9-1/2/LE protocol format. Sample value message.
3、 根据权利要求 1所述的基于 IEC61850-9釆样值的数字功率源, 其 特征在于:所述报文发送模块釆用锁相环控制方法以及 FPGA全数字逻辑控 制方法, 控制报文发送时的时序。  3. The IEC61850-9 sample-based digital power source according to claim 1, wherein the message sending module uses a phase-locked loop control method and an FPGA full digital logic control method to control message transmission. Timing of time.
4、 根据权利要求 1所述的基于 IEC61850-9釆样值的数字功率源, 其 特征在于: 由 GPS高精度时钟同步模块和报文发送模块控制报文发送的时 序, 使应发送的报文理论信号与真实发送的时域信号准确对应。  4. The IEC61850-9 sample-based digital power source according to claim 1, wherein: the GPS high-precision clock synchronization module and the message sending module control the timing of the message transmission, so that the message should be sent. The theoretical signal corresponds exactly to the real-time transmitted time domain signal.
5、 一种基于 IEC61850-9釆样值的数字功率源检测方法, 其特征在于: 包括以下步骤: 中央处理单元与报文发送模块进行数据交互, 其中, 中央处理单元包 括标准计算模块、 报文控制模块和误差计算模块; 5. A digital power source detection method based on the IEC 61850-9 sample value, characterized in that: the following steps are included: The central processing unit performs data interaction with the message sending module, where the central processing unit includes a standard computing module, a message control module, and an error calculation module;
由所述中央处理单元中的报文控制模块控制所述报文发送模块向被测 数字电能表发送基于 IEC61850协议的报文;  Controlling, by the message control module in the central processing unit, the message sending module to send a message based on the IEC 61850 protocol to the measured digital energy meter;
脉冲接收模块从被测数字化电能表接收电能计量脉冲;  The pulse receiving module receives the energy metering pulse from the measured digital energy meter;
所述报文发送模块发送的报文经过所述标准计算模块计算得到标准的 电能和电气测量参数, 并在所述误差计算模块中和脉冲接收模块的电能量 比较得到量值误差。  The message sent by the message sending module is calculated by the standard calculation module to obtain standard electrical energy and electrical measurement parameters, and the quantity error is obtained by comparing the electrical energy of the pulse receiving module with the pulse receiving module.
6、 根据权利要求 1所述的基于 IEC61850-9釆样值的数字功率源, 其 特征在于: 所述中央处理单元和报文发送模块由温度补偿晶体振荡器提供 时钟节拍。  6. The IEC 61850-9 sample-based digital power source of claim 1 wherein: said central processing unit and message transmitting module provide clock ticks by a temperature compensated crystal oscillator.
PCT/CN2013/076945 2013-06-07 2013-06-07 Digital power source based on iec61850-9 sampling value and detection method thereof WO2014194518A1 (en)

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