CN201663550U - 多回路独立供电并联变压器 - Google Patents

多回路独立供电并联变压器 Download PDF

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CN201663550U
CN201663550U CN2010201682289U CN201020168228U CN201663550U CN 201663550 U CN201663550 U CN 201663550U CN 2010201682289 U CN2010201682289 U CN 2010201682289U CN 201020168228 U CN201020168228 U CN 201020168228U CN 201663550 U CN201663550 U CN 201663550U
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transformer
voltage side
transformers
low
switching switch
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赵西平
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Zhejiang Guang Tian power equipment Limited by Share Ltd
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Zhejiang Guangtian Transformer 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • 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
    • 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

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Abstract

多回路独立供电并联变压器，包括至少两台并联运行的变压器，其特征在于所述的各变压器分别以独立回路并联，通过公共母线与电网相连，在每台变压器的高压侧分别设置高压侧投切开关，在每台变压器的低压侧分别设置低压侧投切开关，每台变压器的高、低压两侧的高压侧投切开关和低压侧投切开关联动闭合。本方案通过改变变压器运行方式，在减少运行成本、节省能耗的前提下，克服当前调容变压器应用限制，在非满载情况下，部分变压器处于工作状态，部分则处于断开状态，即各回路相对独立，并可通过调节分时段运行方式延长变压器使用寿命。同时通过互投开关，各变压器也可互为备用，某回路故障时，可不停电检修，保证用电可靠性。

Description

多回路独立供电并联变压器
技术领域
本实用新型涉及供配电系统变压器运行模式，特别是涉及季节性负荷变化幅度比较大，昼夜负荷变化显著的用电区域的变压器运行连接方式。
背景技术
变压器作为电力系统运行的主要设备，在变换电压及传递功率的过程中，自身要产生有功功率损耗和无功功率损耗。变压器的有功功率和无功功率损耗又与变压器的技术特性有关，同时又随着负载的变化而产生非线性的变化，变压器的损耗在电网中的线损所占的比例较大，尤其是轻负荷时占的比例更大。据统计，变压器的损耗在中低压电网中线损约占2％～3％，电网中存在一定数量轻载运行的变压器，所谓“大马拉小车”的现象，对降损节能不利。
发明内容
本实用新型的目的是为了克服已有技术的缺点，提供一种供电方式灵活，运行稳定，操作简单，根据负荷情况进行无励磁调整，使变压器保持在经济运行状态，达到节约电能的多回路独立供电并联变压器。
本实用新型多回路独立供电并联变压器的技术方案是：包括至少两台并联运行的变压器，其特征在于所述的各变压器分别以独立回路并联，通过公共母线与电网相连，在每台变压器的高压侧分别设置高压侧投切开关，在每台变压器的低压侧分别设置低压侧投切开关，每台变压器的高、低压两侧的高压侧投切开关和低压侧投切开关联动闭合。
本实用新型的多回路独立供电并联变压器，通过改变变压器运行方式，在减少运行成本、节省能耗的前提下，克服当前调容变压器应用限制，在非满载情况下，部分变压器处于工作状态，部分则处于断开状态，即各回路相对独立，并可通过调节分时段运行方式延长变压器使用寿命。同时通过互投开关，各变压器也可互为备用，某回路故障时，可不停电检修，保证用电可靠性。其特点有：1、根据负荷等级及容量大小确定所需并联变压器组的台数及各变压器容量；2、各台变压器的容量在满足变压器并联运行条件的前提下，根据负载时段性(季节性)波动，其容量可相同亦可不同；3、各台变压器以独立回路供电，以公共母线并入电网，通过联动投切开关进行投运与切断，投运时并联运行并互为备用，切断时则完全断电；4、根据负载变化规律，计算多台变压器并联运行的临界负载，通过已有的投切开关技术在相应负载时段调整投运方案，确定投运变压器的容量及台数；5、区别于常规一二级负荷的变压器并联运行模式，该运行模式还适用于三级负荷等无特殊要求的民用电，各变压器回路相对独立运作，单电源时采用还可提高其供电可靠性。
附图说明
图1是本实用新型多回路独立供电并联变压器电路示意图。
具体实施方式
本实用新型涉及一种多回路独立供电并联变压器，如图1所示，包括至少两台并联运行的变压器T1、T2，其特征在于所述的各变压器T1、T2分别以独立回路并联，通过公共母线5与电网相连，在每台变压器T1、T2的高压侧11、21分别设置高压侧投切开关13、23，在每台变压器T1、T2的低压侧12、22分别设置低压侧投切开关14、24，每台变压器T1、T2的高、低压两侧的高压侧投切开关13、23和低压侧投切开关14、24联动闭合。本技术方案根据负载变化调节投入变压器的并联数量，即改变投入变压器的总容量，而变压器本身的损耗是随容量的增大而增加的，故通过容量匹配，可大幅减少冗余变压器空载、轻载时间，对于降低变压器运行损耗至关重要，在针对性用电场合节约的长期运行成本远大于增加的采购及安装成本。相对于已有调容变压器，不受调容开关触头结构的限制，各台变压器相对独立，容量不受限制；不同于已有调容变压器受高电压等级的限制，可应用于各电压等级的用电场所；能够带电调容，保证用户的供电可靠性。

Claims (1)

1.多回路独立供电并联变压器，包括至少两台并联运行的变压器(T1、T2)，其特征在于所述的各变压器(T1、T2)分别以独立回路并联，通过公共母线(5)与电网相连，在每台变压器(T1、T2)的高压侧(11、21)分别设置高压侧投切开关(13、23)，在每台变压器(T1、T2)的低压侧(12、22)分别设置低压侧投切开关(14、24)，每台变压器(T1、T2)的高、低压两侧的高压侧投切开关(13、23)和低压侧投切开关(14、24)联动闭合。
CN2010201682289U 2010-04-17 2010-04-17 多回路独立供电并联变压器 Expired - Lifetime CN201663550U (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102647090A (zh) * 2012-04-09 2012-08-22 浙江涵普电力科技有限公司 双功率放大器大功率电源
CN104242669A (zh) * 2014-09-29 2014-12-24 国家电网公司 自动调容的配电变压器
CN107086580A (zh) * 2017-06-01 2017-08-22 深圳市深泰明科技有限公司 一种环网智能控制系统及其控制方法
CN107425528A (zh) * 2017-05-18 2017-12-01 平顶山市华安电气有限公司 一种区域内变压器组自调控方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102647090A (zh) * 2012-04-09 2012-08-22 浙江涵普电力科技有限公司 双功率放大器大功率电源
CN104242669A (zh) * 2014-09-29 2014-12-24 国家电网公司 自动调容的配电变压器
CN107425528A (zh) * 2017-05-18 2017-12-01 平顶山市华安电气有限公司 一种区域内变压器组自调控方法
CN107086580A (zh) * 2017-06-01 2017-08-22 深圳市深泰明科技有限公司 一种环网智能控制系统及其控制方法
CN107086580B (zh) * 2017-06-01 2023-07-14 深圳市深泰明科技有限公司 一种环网智能控制系统及其控制方法

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