CN113422429A - 一种应用于台区智能融合终端的遥信防误增强算法 - Google Patents

一种应用于台区智能融合终端的遥信防误增强算法 Download PDF

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CN113422429A
CN113422429A CN202110045951.0A CN202110045951A CN113422429A CN 113422429 A CN113422429 A CN 113422429A CN 202110045951 A CN202110045951 A CN 202110045951A CN 113422429 A CN113422429 A CN 113422429A
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telecommand
current
judgment
remote signaling
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葛玉磊
张东升
郑耀汉
王金涛
侯胜坤
徐旭
周来恩
王文刚
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Qingdao Topscomm Communication 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
    • 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
    • H02J13/00002—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 monitoring
    • 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
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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

Abstract

本发明公开了一种遥信防误判的扫描算法。本发明的遥信防误增强算法，包括监测、去抖、延时再判三个过程。台区智能融合终端一个关键的技术指标就是要求遥信变位的判断具有较高的准确性。遥信信号反映在数字量上其实就是0和1的变化，0处于断开状态，1处于闭合状态。但是在实际应用中，由于干扰信号的存在和继电器暂态过程处理不当都会造成遥信误报、漏报。本发明可以有效避免因信号干扰和继电器自身问题造成的短时抖动，大幅度提高台区智能融合终端遥信变位判断的准确性。

Description

一种应用于台区智能融合终端的遥信防误增强算法
技术领域
本发明应用于台区智能融合终端进行设备信息的采集与监控，属于智能配电与物联领域，特别是一种台区低压感知物联网。
背景技术
为了适应经济社会的快速发展，满足社会用电的多样化需求，国家电网正大力推进电力物联网建设。台区智能融合终端作为配电网边缘计算智能决策中心，是电力物联网的核心组成部分。遥信又是智能融合终端的一项重要功能。
台区智能融合终端设备通常与其他设备如集中器、低压物联感知终端(LTU)、断路器等配合使用，也经常用来采集开关的遥信状态，遥信信号在电力系统调度中起到的作用尤为重要，它能够反映现场设备开关的实际运行状况。当某一事件发生时，台区智能融合终会根据遥信状态快速做出反应，实际应用中，速断保护应用比较广泛，开关快速动作，对响应时间要求较高，通常是毫秒级别的，这种情况下就要求台区智能融合终能采集到正确的遥信信号。由于开关在断开或闭合状态时都不可避免的存在抖动情况，如果台区智能融合终端不能正确识别这些抖动信号而误将这些信号判为遥信信号，则电力调度过程中则可能会出现失误的情况，并且可能给事后分析造成错误引导。因此台区智能融合终端中事件顺序序列(SOE)的处理方法在台区智能融合终端整个程序设计中显得尤为重要。
软件消抖是常用的消抖方法，能有效的剔除信号的抖动成分，各个厂家消抖方法也各有不同。本发明设计的应用于台区智能融合终端的遥信防误增强算法，相对于其他普通的消抖方法，如硬件消抖方法，具有响应速度快、判定准确度高的优势，同时可准确记录遥信产生的起始时标。
发明内容
本发明所要解决的技术问题是克服上述现有技术存在的问题，提供一种基于软件延时的遥信防抖扫描算法，与传统防抖方法相比较，本算法可有效去除因开关抖动带来的不良影响，可准确记录遥信起始的时标。
为实现上述发明目的，本发明采取如下技术方案：
一种应用于台区智能融合终端的遥信防误增强算法，遥信信号体现在程序中，即是二进制0和1的变化。
遥信信号的变化，0→1的变化，0表示当前处于断开状态，1表示当前处于闭合状态。
过程A：
1)记录4路外部遥信的初始状态，假设均为0；
2)进入过程A，捕获当前遥信状态；
3)遥信状态为0，进入到下一路的状态检测；
4)遥信状态为1，记录当前检测时标，相应属性置位，当前遥信路进入过程B，然后转入下一路的状态检测。
过程B：
1)捕获当前路当前遥信状态，与过程A中当前路初始状态比较；
2)遥信状态为0，当前遥信路重新进入过程A，然后转入下一路的状态检测；
3)遥信状态为1，记录当前检测时标，置为最新时标；
4)最新时标减去过程A中当前路遥信为1的时标即为变位延时，判断变位延时时间；
5)小于8ms，当前遥信路重新进入过程B，然后转入下一路的状态检测；
6)大于8ms，进行下一次状态捕获；
7)遥信状态为0，当前遥信路重新进入过程A，然后转入下一路的状态检测；
8)遥信状态为1，记录当前检测时标，置为最新时标，当前遥信路进入过程C，然后转入下一路的状态检测。
过程C：
1)计算变位持续时间，当前路过程B中最新时标减去过程A中初始遥信状态0的时标；
2)判断当前路持续变位时间与人为设定的防抖时间长短关系；
3)当前路持续变位时间短于防抖时间，重新进入过程A，然后转入下一路的状态检测；
4)当前路持续变位时间长于防抖时间，产生SOE事件，更新遥信状态，当前路遥信重新进入过程A，然后转入下一路的状态检测。
附图说明
图1为台区智能融合终端遥信变化示意图。
图2为本发明应用于台区智能融合终端的遥信防误增强算法流程图。
具体实施方式
下面结合附图和关键程序对本发明作进一步说明，以下内容仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
如图1所示，遥信防误增强算法流程图。关键程序：
1、依次读取4路遥信测点的端口状态；
2、将读取到4路端口状态存入数组；
3、判断第i(1,2,3,4)路是否处于延时再判状态(过程B)；
4、判断第i路是否大于防抖时间(过程C)，大于则说明产生遥信变位(SOE)；
5、将变位信息发送到缓冲区；
6、清除标志位，恢复到初始状态，循环。
遥信判断程序：
1、保存第i路遥信的初始状态；
2、保存第i路遥信的当前状态(过程A)；
3、判断当前遥信变位是否为第一次变位；
4、如果是第一次变位则再保存一次第i路当前的遥信状态，记录当前时标；
5、判断第二次状态状态与第一次状态是否一致；
6、若一致，标志位置为延时再判状态，若不一致，清除各种标志位，恢复到初始状态。

Claims (1)

1.一种应用于台区智能融合终端的遥信防误增强算法，其本质特征在于：遥信信号反映到在上位机软件和算法中便是0和1的变化，断开为0，闭合为1，终端在上电运行后，4路外部遥信的测点都处于过程A(监测过程)，当当前的信号状态发生变化时，测点则转入过程B(去抖过程)，否则仍处于过程A，过程B完成后，测点会进入过程C(延时再判过程)，再次判断是否发生遥信变位，若再次判断与之前判断一致，则生成SOE记录，更新当前遥信状态，否则重新转入过程A；1)过程A(监测过程)：判断当前的测点状态与初始测点状态是否一致，若一致，则进行下一测点的判断；若发生变化，则记录当前的时刻，并将该点属性置位，同时将该测点的状态置为过程B，进行下一测点的判断；2)过程B(去抖过程)：前后需进行两次状态判断，第一次读取当前遥信状态与初始遥信状态比较，若与初始状态一致，则认为之前的变位是干扰或抖动引起的；若当前遥信状态还与初始遥信状态不一致，则认为之前变位可能是一个正常的遥信变位，记录当前时标，判断变位延时是否大于8ms，大于8ms则进入第二次遥信变位判断，否则认为之前变位无效；第二次读取当前遥信状态与第一次读取的遥信状态进行比较，若状态还保持一致则进入过程C，记录当前时标，然后跳出该测点进入下一测点的判断，若第二次读取的状态与第一次读取的状态不一致则重新回到第一次的状态检测中，重新检测；3)过程C(延时再判过程)：第二次检测的时标与初始状态时标相减即是变位持续的时间，若此变位时间大于人为设置的防抖时间，则认为产生SOE事件，更新当前遥信状态，同时将该测点恢复到过程A，然后进入下一测点的检测判断。
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Application publication date: 20210921