CN202221925U - 低压三相不平衡无功自动调补及配变监测系统 - Google Patents

低压三相不平衡无功自动调补及配变监测系统 Download PDF

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CN202221925U
CN202221925U CN2011202875512U CN201120287551U CN202221925U CN 202221925 U CN202221925 U CN 202221925U CN 2011202875512 U CN2011202875512 U CN 2011202875512U CN 201120287551 U CN201120287551 U CN 201120287551U CN 202221925 U CN202221925 U CN 202221925U
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distribution transformer
electric capacity
phase
monitoring system
reactive
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成志华
王东民
隋爱国
周福春
张海兵
张建营
张涛
武强
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DONGYING DISTRICT POWER SUPPLY CO LTD
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    • 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
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase 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
    • Y04S40/124—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 wired telecommunication networks or data transmission busses
    • 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
    • Y04S40/126—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 wireless data transmission

Abstract

本实用新型涉及一种电力系统检测装置，特别涉及一种低压三相不平衡无功自动调补及配变监测系统，其技术方案是采用分层分布式结构，包括采集控制层、网络层和采控中心三部分，所述的采集控制层由PD2000-TB三相不平衡无功补偿控制器、复合投切开关和星角混合接法的电容或电抗元件分别接入到三相电中构成；所述的网络层采用无线通信方式；所述的采控中心由通讯服务器、数据库和客户端组成。有益效果是：配电变压器监测与控制系统是将三相不平衡无功补偿控制与台区数据采集融于一体，利用无线通讯网络为数据通道实现对配电变压器的就地补偿及远程实时监测；该系统功能强大，应用性强。可极大提高生产、经营和管理自动化水平及经济效益。

Description

低压三相不平衡无功自动调补及配变监测系统
技术领域：
本实用新型涉及一种电力系统检测装置，特别涉及一种低压三相不平衡无功自动调补及配变监测系统。
背景技术：
我国城乡电网中，大量采用三相四线制配电方式，配电变压器Y/Yno接线。由于存在很多的单相负载、用电不同时性等原因，因此配电变压器的三相不平衡运行是不可避免的。配电变压器的不平衡运行，使中线电流增大，增加变压器的铜损、铁损，降低变压器的运行效率，影响变压器的安全运行，造成三相电压不平衡，降低电能质量。
发明内容：
本实用新型的目的就是针对现有技术存在的上述缺陷，提供一种低压三相不平衡无功自动调补及配变监测系统。
其技术方案是：采用分层分布式结构，包括采集控制层、网络层和采控中心三部分，所述的采集控制层由PD2000-TB三相不平衡无功补偿控制器、复合投切开关和星角混合接法的电容或电抗元件分别接入到三相电中构成；所述的网络层采用无线通信方式，包括GPRS网络和Internet网络；所述的采控中心由通讯服务器、数据库和客户端组成，实现数据共享。
上述的星角混合接法的电容由多个星接电容和多个角接电容组成，所述的多个星接电容汇总到三相电中，所述的多个角接电容分别连接到三相电中。
本实用新型的有益效果是：配电变压器监测与控制系统是将三相不平衡无功补偿控制与台区数据采集融于一体，利用无线通讯网络为数据通道实现对配电变压器的就地补偿及远程实时监测；该系统功能强大，应用性强。可极大提高生产、经营和管理自动化水平及经济效益。提高电综合自动化应用水平，充分发挥计算技术和网络通信技术的潜能替代了长期以来的人工调整负荷、人工抄区变台考核表，降低了配电工人的劳动强度，缩短了人为因素引起的错差，提高了数据的准确性和实时性。
附图说明：
附图1是本实用新型的结构示意图；
附图2是本实用新型的接线原理图。
具体实施方式：
结合附图1-2，对本实用新型作进一步的描述：
本实用新型采用分层分布式结构，包括采集控制层、网络层和采控中心三部分，所述的采集控制层由PD2000-TB三相不平衡无功补偿控制器、复合投切开关和星角混合接法的电容或电抗元件分别接入到三相电中构成；所述的网络层采用无线通信方式，包括GPRS网络和Internet网络；所述的采控中心由通讯服务器、数据库和客户端组成，实现数据共享。
上述的星角混合接法的电容由多个星接电容和多个角接电容组成，所述的多个星接电容汇总到三相电中，所述的多个角接电容分别连接到三相电中。
其中，PD2000-TB三相不平衡无功补偿控制器：按交流采样法原理进行设计，具有多种电气量采样、运算、控制功能。控制芯片采用DSP具有速度快、实时性强、精度高、控制功能齐全实用的特点。同时还具有就地通信抄表或连接无线模块传输数据的功能。
采用了可控硅与接触器并联的智能复合投切开关进行电容器投切。复合开关采用零电压可控硅投入；正常运行时使用并联的接触器接点，无功耗；零电流切除，不拉弧。
补偿方式：
采用星角混合接法
星接电容器采用两组三用的切换方式，减少电容器
角接电容器采用角内控制技术，降低电流，实现AB、BC、CA角接不等量投切。
补偿容量：
 按配电变压器容量的30-40％安装电容器。
角接电容器应选用额定电压415伏、干式、自愈、全膜介质、金属化、三相六端子电容器；星接选用250伏单相电容器。
电容器内应装有放电装置，满足一分钟将电压放至≤50伏的要求。
本实用新型是将现有市售的PD2000-TB三相不平衡无功补偿控制器、电力电容器、复合开关及其它低压电气元件，全部安装在通风又防雨的金属箱内，且其箱装有温控自动通风排热系统，电气元件安装应采用统一标准的安装板，装在可活动的框架上，使用安装与维护更加方便。
无线通信主要是采用GPRS数据传输：由于10kV线路的配电变压器比较分散，又没有专用的数据传输通道。我们采用了公网GPRS作为数据传输通道，将采集的数据传送到配电管理中心服务器进行处理。
在每个配电变压器（箱变）安装一个GPRS通信模块和一个SIM卡。数据通过GPRS发送给配电管理中心服务器。为了确保数据安全，所有发送的数据都采用了RSA加密技术，这样可以防止恶意破坏和干扰。 　该系统实现了现场装置实时跟踪电网负荷数据变化，及时、准确投切电容器组、调整变压器三相输出，使其达到相对平衡、又补偿系统需要的无功功率以提高功率因数的目的。并可以通过GPRS通信模块向后台计算机配电管理软件提供准确可靠的变压器运行负荷数据，为后续数据分析提供了可靠的依据。

Claims (2)

1.一种低压三相不平衡无功自动调补及配变监测系统，其特征是：采用分层分布式结构，包括采集控制层、网络层和采控中心三部分，所述的采集控制层由PD2000-TB三相不平衡无功补偿控制器、复合投切开关和星角混合接法的电容或电抗元件分别接入到三相电中构成；所述的网络层采用无线通信方式，包括GPRS网络和Internet网络；所述的采控中心由通讯服务器、数据库和客户端组成，实现数据共享。
2.根据权利要求1所述的低压三相不平衡无功自动调补及配变监测系统，其特征是：所述的星角混合接法的电容由多个星接电容和多个角接电容组成，所述的多个星接电容汇总到三相电中，所述的多个角接电容分别连接到三相电中。
CN2011202875512U 2011-08-09 2011-08-09 低压三相不平衡无功自动调补及配变监测系统 Expired - Fee Related CN202221925U (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103345871A (zh) * 2013-07-16 2013-10-09 南京丹迪克科技开发有限公司 一种三相不平衡调整实训装置及其使用方法
CN104269860A (zh) * 2014-10-08 2015-01-07 国家电网公司 一种新型低压无功补偿装置
CN104502741A (zh) * 2014-11-26 2015-04-08 河北旭辉电气股份有限公司 静止无功发生器远程在线监测系统
CN107508298A (zh) * 2017-09-28 2017-12-22 合肥工业大学 一种微电网不平衡电压分层优化控制方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103345871A (zh) * 2013-07-16 2013-10-09 南京丹迪克科技开发有限公司 一种三相不平衡调整实训装置及其使用方法
CN104269860A (zh) * 2014-10-08 2015-01-07 国家电网公司 一种新型低压无功补偿装置
CN104502741A (zh) * 2014-11-26 2015-04-08 河北旭辉电气股份有限公司 静止无功发生器远程在线监测系统
CN104502741B (zh) * 2014-11-26 2018-05-04 河北旭辉电气股份有限公司 静止无功发生器远程在线监测系统
CN107508298A (zh) * 2017-09-28 2017-12-22 合肥工业大学 一种微电网不平衡电压分层优化控制方法
CN107508298B (zh) * 2017-09-28 2020-03-17 合肥工业大学 一种微电网不平衡电压分层优化控制方法

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