CN113937766A - 一种多级联网荷控制方法、系统及互动终端 - Google Patents

一种多级联网荷控制方法、系统及互动终端 Download PDF

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CN113937766A
CN113937766A CN202111225355.7A CN202111225355A CN113937766A CN 113937766 A CN113937766 A CN 113937766A CN 202111225355 A CN202111225355 A CN 202111225355A CN 113937766 A CN113937766 A CN 113937766A
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load
terminal
control
shedding
command
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徐子悦
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Nanjing Forestry University
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Nanjing Forestry University
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • 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
    • 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
    • H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • 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
    • H02J13/00016—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 a wired telecommunication network or a data transmission bus
    • H02J13/00017—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 a wired telecommunication network or a data transmission bus using optical fiber
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

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

Abstract

本发明属于电力自动化技术及通讯技术领域，具体涉及多级联网荷控制方法、系统及互动终端，采集分支负荷线路的三相交流电压和电流，获取各分支线路的可切负荷量；根据电网故障时的调度指令，实时接收主站的切负荷命令，完成负荷线路的切除控制，在电网故障恢复后，按照上级子站的要求，恢复部分负荷。智能网荷互动终端是新型负荷控制终端设备，采用模块化设计思想。可接入负荷快速响应系统、精准切负荷控制系统，是大用户现场负荷数据采集和控制执行单元；同时满足同一用户多变电站房的一主多从级联功能。主站下发的负荷控制信号通过光纤或以太网方式下发给各终端。

Description

一种多级联网荷控制方法、系统及互动终端
技术领域
本发明涉及一种多级联网荷控制方法、系统及互动终端，属于电力自动化技术及通讯技术领域。
背景技术
华东电网针对特高压直流双极闭锁、区外大功率失去后，电网安全运行面临故障初期频率快速跌落、主干通道潮流越限、省际联络线功率超用、电网旋转备用不足等四类问题，建设了华东电网频率紧急协调控制系统，在事故后根据事先制定的控制策略，采取紧急提升控制其它直流功率、切除华东抽蓄电厂中处于水泵状态的机组的措施，若多直流控制和抽蓄切泵控制总容量仍然不满足要求，则可能需要采取切除江苏、浙江、安徽、上海四省可中断负荷的控制措施。
发明内容
为了克服现有技术中存在的不足，本发明提供一种多级联网荷控制方法、系统及互动终端，可以实现大用户现场可调负荷数据分类采集和控制，实现电网侧对负荷精准控制。
一种多级联网荷控制方法，包括以下步骤：
采集分支负荷线路的三相交流电压和电流，获取各分支线路的可切负荷量；
在电网故障(如过负荷、低频等)时，主站根据控制策略发出切负荷指令，经子站分解转发；负控终端实时接收主站的切负荷命令，完成负荷线路的切除控制；在电网故障恢复后，主站根据故障恢复情况有序发送恢复负荷命令，负控终端根据上级子站的要求，恢复部分负荷。
进一步的，通过智能断路器采集被控分支负荷线路的电流、电压和功率，获取各分支线路的可切负荷量。
进一步的，负荷线路中的允切负荷分成三类，第一类为生活用电，第二类为可中断的生产性负荷，第三类为其他负荷，并进行分类统计。
进一步的，在切负荷任务完成电网恢复稳定后，接收到负荷恢复命令后解除闭锁并恢复负荷。
本发明还提供一种多级联网荷互动终端，所述终端包括：
信息采集模块，用于采集分支负荷线路的三相交流电压和电流，获取各分支线路的可切负荷量；
信息处理模块，在电网故障(如过负荷、低频等)时，主站根据控制策略发出切负荷指令，经子站分解转发；负控终端实时接收主站的切负荷命令，完成负荷线路的切除控制；
在电网故障恢复后，主站根据故障恢复情况有序发送恢复负荷命令，负控终端根据上级子站的要求，恢复部分负荷恢复部分负荷。
进一步的，所述级联网荷互动终端包括主终端和从终端，主终端用于对上通信、本机模拟量及信号量采集、参数管理、故障录波的功能；从终端用于分路采集和响应主终端操作命令，操作命令经级联通信板透传至从终端响应执行。
进一步的，操作命令包括预置、分闸、合闸和校表。
进一步的，所述从终端包括主MCU、模拟量采集板、信号量采集板和控制输出板；所述主MCU用于从终端模拟量采集、信号量采集、回复采集数据命令和响应主终端分合闸命令。
进一步的，所述多级联网荷互动终端采用智能硬压板技术，实现对智能硬压板投退位置的监视。
本发明还提供一种多级联网荷控制系统，包括：处理器，适于实现各种指令；
存储设备，适于存储多条指令，所述指令适于由处理器加载并执行上述方法。
有益效果
本发明提供的一种多级联网荷互动终端，可以实现大用户现场可调负荷数据分类采集和控制，实现电网侧对负荷精准控制。智能网荷互动终端是新型负荷控制终端设备，采用模块化设计思想。可接入负荷快速响应系统、精准切负荷控制系统，是大用户现场负荷数据采集和控制执行单元；同时满足同一用户多变电站房的一主多从级联功能。主站下发的负荷控制信号通过光纤或以太网方式下发给各终端。
附图说明
图1为本发明的结构示意图。
图2为本发明的软件处理流程图。
具体实施方式
如图1所示，一种多级联网荷互动终端，包括：电源板、显示板、级联通信板和从终端。
所述电源板额定电压110V～220VDC/AC。所述主MCU负责控制逻辑。所述模拟量采样板负责各支路高速采样。所述级联通信板负责板间信号及数据传输。所述信号量采样板为无源空接点，额定电压直流48V/110V/220V输入可选。所述控制输出板为无源空接点，最高工作电压380VAC/250VDC。
所述从终端，包括：主MCU、模拟量采集板、信号量采集板和控制输出板。主MCU负责从终端模拟量采集、信号量采集、回复采集数据命令和响应主终端分合闸命令。
主MCU采用ATMEL公司新一代高性能ARM9作核心处理器开发设计；具备多路信号采集、多路控制输出、多种通讯接口、支持与远方主站以多种协议通讯等远传功能；支持通过调试接口应用调试配置工具软件实现对装置的内部信息及状态的监视，及所有板件的固件升级；装置采用内部高速总线，硬件和软件均采用模块化设计；配置灵活，便于扩展和维护的特点；装置采用一体化设计、全封闭上架式机箱，强弱电严格分开、抗干扰能力大大提高，电磁兼容各项标准均达到继电保护级的IEC标准；带液晶、按键等常规接口，支持红外、Debug口等调试工具。
本发明所述的多级联网荷互动终端，可接入负荷快速响应系统、精准切负荷控制系统等负荷控制系统，是大用户现场负荷数据采集和控制执行单元；同时满足原有营销负荷控制管理功能，并为营销用电信息采集系统提供用户用电数据。
本发明所述的多级联网荷互动终端，通过级联能实现8-16个分支负荷线路三相交流电压、电流采集：实现电压、电流、有功、无功、功率因数、频率的测量和计算；如现场条件许可，也可通过智能断路器(智能开关)通过485口采集被控分支负荷线路的电流、电压和功率，获取各分支线路的可切负荷量。
终端采用智能硬压板技术，实现对智能硬压板投退位置的监视，解决普通人工投退的硬压板难于直接监测和试验的问题，有效防止用户私自退出跳闸出口压板的作弊行为；终端实现远方监视，并在远方和就地显示硬压板的实时状态。
终端具备8-16组分合继电器控制输出，可根据电网故障时的调度指令，实时接收主站的切负荷命令，完成负荷线路的毫秒级快速切除控制，既可实现分轮分类切除控制，也可实行全切控制；在电网故障恢复后，能按上级子站的要求，自动恢复部分负荷，对负荷分支线路开关进行合闸控制，跳闸和合闸矩阵可以设置。继电器控制操作通过启动和动作指令协作完成，可靠性高。
终端应能把所有负荷线路中的允切负荷分成三类(如空调、照明等一类、可中断的生产性负荷一类、其它负荷一类)，并能进行分类统计上送，在需要切负荷时，既可是实现全切负荷，也可以按分类切除，能实现更加精准的切负荷控制。
在切负荷任务完成电网恢复稳定后，终端可在接收到安全稳定控制装置的提醒负荷恢复命令后解除闭锁，提醒用户可以恢复负荷。
终端应能根据不同的功能和运行要求在屏幕上设置和调整装置内部的定值，并能通过负荷控制终端监视管理系统，能在远方对装置的定值进行修改和设置。
终端支持为每轮跳闸出口进行跳闸和合闸矩阵设置，灵活控制分支负荷线路，并能通过负荷控制终端监视管理系统，在远方对跳闸和合闸出口矩阵进行设置。
如图2所示，所述一种多级联网荷互动终端，主终端负责对上通信、本机模拟量及信号量采集、参数管理、故障录波等功能。从终端负责分路采集和响应主终端操作命令，操作命令包括预置、分闸、合闸和校表，操作命令经级联通信板透传至从终端响应执行。
以上所述仅是本发明的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

1.一种多级联网荷控制方法，其特征在于，包括以下步骤：
采集分支负荷线路的三相交流电压和电流，获取各分支线路的可切负荷量；在电网故障时，主站根据控制策略发出切负荷指令，经子站分解转发；负控终端实时接收主站的切负荷命令，完成负荷线路的切除控制；在电网故障恢复后，主站根据故障恢复情况有序发送恢复负荷命令，负控终端根据上级子站的要求，恢复部分负荷。
2.根据权利要求1所述的多级联网荷控制方法，其特征在于，通过智能断路器采集被控分支负荷线路的电流、电压和功率，获取各分支线路的可切负荷量。
3.根据权利要求1所述的多级联网荷控制方法，其特征在于，负荷线路中的允切负荷分成三类，第一类为生活用电，第二类为可中断的生产性负荷，第三类为其他负荷，并进行分类统计。
4.根据权利要求1所述的多级联网荷控制方法，其特征在于，在切负荷任务完成电网恢复稳定后，接收到负荷恢复命令后解除闭锁并恢复负荷。
5.一种多级联网荷互动终端，其特征在于，所述终端包括：
信息采集模块，用于采集分支负荷线路的三相交流电压和电流，获取各分支线路的可切负荷量；
信息处理模块，在电网故障时，主站根据控制策略发出切负荷指令，经子站分解转发；负控终端实时接收主站的切负荷命令，完成负荷线路的切除控制；
在电网故障恢复后，主站根据故障恢复情况有序发送恢复负荷命令，负控终端根据上级子站的要求，恢复部分负荷恢复部分负荷。
6.根据权利要求5所述的级联网荷互动终端，其特征在于，所述级联网荷互动终端包括主终端和从终端，主终端用于对上通信、本机模拟量及信号量采集、参数管理、故障录波的功能；从终端用于分路采集和响应主终端操作命令，操作命令经级联通信板透传至从终端响应执行。
7.根据权利要求5所述的级联网荷互动终端，其特征在于，操作命令包括预置、分闸、合闸和校表。
8.根据权利要求5所述的级联网荷互动终端，其特征在于，所述从终端包括主MCU、模拟量采集板、信号量采集板和控制输出板；所述主MCU用于从终端模拟量采集、信号量采集、回复采集数据命令和响应主终端分合闸命令。
9.根据权利要求5所述的级联网荷互动终端，其特征在于，所述多级联网荷互动终端采用智能硬压板技术，实现对智能硬压板投退位置的监视。
10.一种多级联网荷控制系统，其特征在于，包括：处理器，适于实现各种指令；
存储设备，适于存储多条指令，所述指令适于由处理器加载并执行权利要求1～4中任一项所述的方法。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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