CN104503298A - 一种多采样率输出的合并单元 - Google Patents

一种多采样率输出的合并单元 Download PDF

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CN104503298A
CN104503298A CN201410688285.2A CN201410688285A CN104503298A CN 104503298 A CN104503298 A CN 104503298A CN 201410688285 A CN201410688285 A CN 201410688285A CN 104503298 A CN104503298 A CN 104503298A
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李峰
姜帅
梁经宛
刘永欣
牛强
陶永健
李栋
席亚克
王雷涛
张仑山
赵应兵
闫志辉
杜军
唐宇
赵宝
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XJ Electric Co Ltd
Xuchang XJ Software Technology Co Ltd
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XJ Electric Co Ltd
Xuchang XJ Software Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

本发明涉及一种多采样率输出的合并单元，合并单元采用多CPU插件独立设计，基本CPU插件进行256点/周波采样，通过内部计算每15分钟输出1次，提供给计量和电能质量监测；扩展CPU插件输出80点/周波采样数据，提供给保护装置、PMU、故障录波设备，并通过内部计算输出秒级基波正序数据，提供给调度主站进行电力系统分析计算(潮流计算、状态估计、稳定计算等)，解决了智能变电站内保护、测控、计量、电能质量监测等不同功能应用对于采样率要求不同的问题。

Description

一种多采样率输出的合并单元
技术领域
本发明属于电力系统自动化领域，具体涉及一种满足不同采样率输出的合并单元实现方法。
背景技术
合并单元作为智能变电站过程层的关键设备，是连接电子式互感器或常规互感器与间隔层二次设备的桥梁，其主要功能为采集变电站的电流、电压模拟量，经过同步和重采样等处理后为间隔层保护、测控、录波等设备提供同步的采样数据，从而保障其可靠运行。
目前，合并单元主流应用方案为按IEC 61850-9-2(或FT3)格式统一输出80点/周波(4k/s)的采样数据，该采样数据能够满足保护、测控等装置的采样需求，但不能直接匹配后续不同应用对数据采样率的不同需求。据分析，主站分析计算对模拟量的要求为每秒1次的基波正序稳态数据，变电站内对模拟量采样率的要求可分为两种，即80点/周波和256点/周波。若合并单元统一输出256点/周波的采样数据，则会造成变电站系统网络压力过大，且对后续装置硬件处理能力提出更高的要求。因此，需要合并单元支持不同采样率输出。
发明内容
本发明的目的是提供一种多采样率输出的合并单元，以解决合并单元单一采样率输出不能满足电网分析及变电站内不同应用需求的问题。
为了实现以上目的，本发明所采用的技术方案是：
一种多采样率输出的合并单元，包括过程层采样插件、一个基本CPU插件和至少一个扩展CPU插件；过程层采样插件用于实现本间隔给定采样率的数据采样和母线电压数据级联，为基本CPU插件和扩展CPU插件提供已同步的采样数据和IPPS信号，同时为基本CPU插件输出采样脉冲；基本CPU插件用于输出给定采样率的数据；扩展CPU插件通过插值算法将给定采样率的采样数据插值为不同于所述给定采样率的输出进行输出，并通过内部计算，输出秒级基波正序稳态数据，提供给调度主站系统。
所述给定采样率为256点/周波采样，通过内部计算每15分钟输出1次，提供给电能计量和电能质量监测,满足计量精度、谐波准确度及电能质量监测的要求。
扩展CPU插件提供80点/周波输出，提供实时数据给保护装置、PMU、故障录波设备；输出秒级基波正序数据，通过SCADA信道提供给调度主站，进行电力系统分析计算(潮流计算、状态估计、稳定计算等)。
采样数据支持点对点模式和组网模式，解决了智能变电站内保护、测控、计量、电能质量监测等不同功能应用对于采样率要求不同的问题。
附图说明
图1是本发明实施例的合并单元功能架构设计图；
图2是本发明实施例的合并单元采用双CPU插件实现不同采样率输出的原理图；
图3是本发明实施例的合并单元装置硬件背板图；
图4是本发明实施例的合并单元典型应用方案示意图。
具体实施方式
下面结合附图及具体的实施例对本发明进行进一步介绍。
本发明的合并单元采用多CPU插件设计，分为基本CPU插件和扩展CPU插件，分别输出不同的采样率输出。
具体的，如图2所示实施例包括两个CPU插件，1#CPU插件即为基本CPU插件，2#CPU插件即为扩展CPU插件。过程层采样插件实现本间隔256点/周波数据采样和母线电压数据级联，并通过串行总线发送给其它插件已同步的采样数据，并同时产生装置背板的1PPS信号和采样脉冲；1#CPU插件实现256点/周波采样，并通过内部计算每15分钟输出1次，提供给电能计量和电能质量监测；2#CPU插件采用抛物线插值算法将256点/周波采样数据插值为80点/周波输出，提供实时数据给保护装置、PMU、故障录波设备；2#CPU插件通过内部计算，将电压与电流傅里叶分解得到基波分量，正负零序分解得到正序，稳态处理求电压与电流基波正序幅值的稳态值和有功功率与无功功率的稳态值，以MMS报文实现基波正序稳态数据的就地化处理上送，上送频率为1次/秒，整秒零时刻输出，提供给调度主站进行电力系统分析计算。
如图1和图2所示为本发明合并单元采用双CPU插件实现不同采样率输出的功能架构设计和原理图，图2中每个插件的功能分配如下：
(1)过程层采样插件完成基于256点/周波采样及母线电压数据的级联，通过串行总线发送给其它插件已同步的采样数据，并同时产生装置背板的1PPS信号和采样脉冲。
(2)1#CPU插件组包并发送256点/周波的采样数据，其中断基于采样插件产生的采样中断；通过内部计算每15分钟输出1次，提供给电能计量和电能质量监测；可集成智能终端功能。
(3)2#CPU插件采用抛物线插值算法将256点/周波数据插为80点/周波，组包并发送80点/周波的采样数据，提供给保护、测控等装置，其中断基于1PPS由本插件的FPGA模块分频产生。2#CPU插件通过内部计算以MMS报文实现基波正序稳态数据的就地化处理上送，上送频率为1次/秒，整秒零时刻输出，提供给调度主站进行电力系统分析计算(潮流计算、状态估计、稳定计算等)。
由于前端按256点采样进行滤波，模拟滤波回路的截止频率比较高，为防止80点重采样后造成频率混叠，2#CPU需要进行数字滤波处理。
(4)对于要求80点/周波采样值输出的端口数量较多的工程，合并单元支持CPU插件可扩展功能，满足80点/周波采样数据的多路输出。
图3所示为装置硬件背板图，主要由电源插件、1#CPU插件、2#CPU插件、采样插件、通信插件、开入插件、扩展插件、出口插件等组成。
图4所示为支持多采样率输出的合并单元应用方案，母线电压合并单元采集母线电压值，采用FT3或9-2规约通过级联插件将采样值送给间隔电流合并单元。1#CPU插件输出256点/周波采样值，通过内部计算每15分钟输出1次，提供给计量、电能质量监测等装置；2#CPU插件输出80点/周波采样值，提供给保护、测控等装置，并以MMS报文实现基波正序稳态数据的上送，从而满足不同功能应用对于采样率的需求。
以上实施例仅用于帮助理解本发明的核心思想，不能以此限制本发明，对于本领域的技术人员，凡是依据本发明的思想，对本发明进行修改或者等同替换，在具体实施方式及应用范围上所做的任何改动，均应包含在本发明的保护范围之内。

Claims (3)

1.一种多采样率输出的合并单元，其特征在于，包括过程层采样插件、一个基本CPU插件和至少一个扩展CPU插件；过程层采样插件用于实现本间隔给定采样率的数据采样和母线电压数据级联，为基本CPU插件和扩展CPU插件提供已同步的采样数据和IPPS信号，同时为基本CPU插件输出采样脉冲；基本CPU插件用于输出给定采样率的数据；扩展CPU插件通过插值算法将给定采样率的采样数据插值为不同于所述给定采样率的输出进行输出。
2.根据权利要求1所述的一种多采样率输出的合并单元，其特征在于，所述给定采样率为256点/周波采样，通过内部计算每15分钟输出1次，提供给电能计量和电能质量监测,满足计量精度、谐波准确度及电能质量监测的要求。
3.根据权利要求1所述的一种多采样率输出的合并单元，其特征在于，扩展CPU插件提供80点/周波输出，提供实时数据给保护装置、PMU、故障录波设备。扩展CPU插件通过内部计算，以MMS报文实现基波正序稳态数据的上送，上送频率为1次/秒，提供给调度主站进行电力系统分析计算。
CN201410688285.2A 2014-11-25 2014-11-25 一种多采样率输出的合并单元 Pending CN104503298A (zh)

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