CN113783285A - 一种低压综合配电箱 - Google Patents

一种低压综合配电箱 Download PDF

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CN113783285A
CN113783285A CN202110932116.9A CN202110932116A CN113783285A CN 113783285 A CN113783285 A CN 113783285A CN 202110932116 A CN202110932116 A CN 202110932116A CN 113783285 A CN113783285 A CN 113783285A
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power
distribution box
power supply
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low
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徐旖旎
熊雄
季宇
邵瑶
张海
刘海涛
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China Online Shanghai Energy Internet Research Institute Co ltd
Electric Power Research Institute of State Grid Shanghai Electric Power 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H02B1/22—Layouts for duplicate bus-bar selection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H02B1/48—Mounting of devices therein
    • 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
    • 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
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • 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
    • 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
    • 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
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • 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
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inverter Devices (AREA)

Abstract

本发明公开了一种低压综合配电箱，其中综合配电箱内设置有能够在短时间内进行持续供电的双电源回路，当综合配电箱设置于配电台区柔性互联的电力系统中时，就能在上级电源故障或者检修的情况下，提供不间断的电流供应，保证信号采集的准确性和连续性，从而确保融合终端对端侧设备执行模式切换及控制策略的准确性，提高供电可靠性。

Description

一种低压综合配电箱
技术领域
本发明涉及低压交直流混合配电技术领域，特别涉及一种低压综合配电箱。
背景技术
低压综合配电箱—JP柜广泛运用于国内交流配网末端农网改造中或者是变电站、工厂、工矿企业、大型电厂、石油、化工企业、大型钢厂和高层建筑动力中心等场所。该配电箱是集配电、计量、保护(过载、短路、漏电、防水)、电容无功补偿于一体的综合控制箱。当前JP柜内二次系统的辅助电源多取自变压器出口的B相线，即采用单电源供电方式，在上级电源故障或检修的状态下，终端设备将失电进而无法检测到当前一次设备的运行情况及状态。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种低压综合配电箱，能够在配电台区失去电源的情况下保证融合终端和台区下属端侧设备测控装置采集信号的连续性，并且提高用电系统在台变故障或检修下的供电可靠性。
根据本发明的第一方面实施例的综合配电箱，其特征在于，包括：
主电路，由变压器输入的电流送入低压综合配电箱，经过总断路器，连接到本地三相交流线路；
若干出线端，并联于所述本地三相交流线上，所述若干出线端上还设置有若干个断路器；
双电源回路，包括不间断电源和双电源切换开关；
其中，所述双电源回路，备用电源端连接到所述若干断路器中任意一个的下游，默认电源端连接到所述总断路器的上游，所述双电源回路能够在在主电路断电且双向换流器重新启动后切换至备用电源供电。
根据本发明实施例的综合配电箱，至少具有如下有益效果：能够利用配电箱中的双电源回路，在发生故障或检修的时候，提供持续的电流供应，保证信号采集的准确性和连续性，从而确保融合终端对端侧设备执行模式切换及控制策略的准确性，提高供电可靠性。
根据本发明的一些实施例，所述出线端包括第一出线端、第二出线端、第三出线端，所述第一出线端上设置有第一断路器，所述第二出线端上设置有第二断路器，所述第三出线端上设置有第三断路器。
根据本发明的一些实施例，所述双电源回路，一段连接到所述第一断路器下游，另一端连接到所述总断路器的上游。
根据本发明的一些实施例，所述综合配电箱应用于台区内含分布式储能、电源或进行柔性互联的电力系统内，所述不间断电源能够提供分钟级的电量支持。
根据本发明的一些实施例，其特征在于，所述双电源回路，备用电源端连接柔直互联换流器、储能变流器等分布式电源的断路器下游。
根据本发明的一些实施例，所述综合配电箱还包括智能融合终端，所述智能融合终端能够实现各种运行数据不同时间尺度的采集和上报、设备隐患的监测预警、电能质量治理、就地协调运行控制以及故障研判。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本发明实施例的综合配电箱的示意图。
主电路100、总断路器101、浪涌保护器102、出线端200、第一出线端210、第一断路器211、第二出线端220、第二断路器221、第三出线端230、第三断路器231、双电源回路300、双电源切换开关310、不间断电源320。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
实施例一、
本申请的实施例提供了一种应用于台区内含分布式电源或进行台区间柔性互联的综合配电箱，参照图1，综合配电箱内部的电路包括：主电路100、出线端200和双电源回路300。
主电路100的一端连接外部交流电源，另一端连接到本地三相交流线路。
通常来说，由于综合配电箱通常设置在电网中靠近用户侧的部位，则外部交流电源大多为连接到电网的变压器。本地三相交流线路连接到用电负载或包含双向换流器的储能装置或分布式电源。
电流从变压器输入进入低压综合配电箱的主电路100，经过总断路器101，进入本地三相交流线路并最终进入用电器当中。
进一步地，主电路100还设置有浪涌保护器102。浪涌保护器102连接到总断路器101的下游。浪涌保护器102能够把窜入电力线的瞬时过电压限制在设备或系统所能承受的电压范围内，保护设备或系统不受冲击而损坏。
本地三相交流线路上还设置有出线端200，在本实施例中，包括第一出线端210，第二出线端220和第三出线端230。所述第一出线端210、第二出线端220和第三出线端230上分别设置有第一断路器211、第二断路器221和第三断路器231。
双电源回路300包括不间断电源320(Uninterruptible Power Supply UPS)和双电源切换开关310。双电源自动切换开关的两路进线分别为低压总进线开关上端即变压器出口侧和连接AC/DC换流器支路馈线开关的下端，默认电源为变压器出口侧，双电源的输出接入低压二次辅助电源的总进线，不间断电源320的出口并入低压二次辅助电源的总进线。双电源切换开关310与不间断电源320连接形成双电源回路300，双电源回路300的一段连接到总断路器的上游，另一端连接到第一出线端210的下游。
可以理解到的是，在本实施例中描述的双电源回路接入低压综合配电箱的连接方式，仅作举例说明，如果仅仅改变双电源回路与断路器的关系，只要双电源回路能够在主电路断电的时候，切换到不间断电源进行供电，同样是不脱离本申请的宗旨的。
更进一步地，本申请实施例描述的低压综合配电箱，处于通过配电台区柔性互联实现的交流末端电网系统或者台区内含带双向换流器的分布式储能、电源的电网系统当中。由于柔直互联系统及分布式储能、电源本身能够在台变(包含变压器本体，跌落式熔断器、隔离开关等部件)处于故障或者检修的情况下提供持续的供电，所以低压综合配电箱中的双电源回路中的不间断电源，只需要能够在换流器重新启动的这短暂的时间内为配电箱内的二次测控终端提供电能，保证信号采集的准确性和连续性，即可满足系统的需求，并最终达成不间断的供电。从而确保融合终端对端侧设备执行模式切换及控制策略的准确性，提高供电可靠性。
当上级电源失电时，综合配电箱内的总断路器将自动跳闸并脱扣，由此导致开关下游母排和馈线均失电，即双电源开关的默认电源和备用电源均失电，此时将无缝切换至UPS提供综合配电箱的二次电源；融合终端可正常接收台区低压总进线开关欠压脱扣且无电压的信号，启动故障转供电策略，切换失电台区下属双向换流器至离网运行(V-f)模式并启动带载，保证台区在故障和检修状态下用户负荷不停电。此时与AC/DC换流器支路馈线开关重新得电，即双电源自动切换开关的备用电源得电，整个综合配电箱的二次电源由换流器提供，UPS重新处于浮充状态。
当失电台区重新得电时，融合终端检测到低压总进线开关上游有电，双电源自动切换开关会自动恢复综合配电箱二次供电为默认电源，融合终端和测控装置能够不间断获取开关量测值及状态值，启动策略将换流器从离网运行恢复至并网运行模式，期间双电源开关默认电源不断电，能够保持开关量测量和状态量获取的连续性。
根据本申请一些较优的实施例，该配电箱在实施例一的基础上，还可以增加了智能融合终端、智能电容器、电压源型逆变器。
其中，智能融合终端是配电台区的信息采集中心，智能融合终端信号接入设备具体包括：变压器出线CT、总进线开关及馈线开关、充电桩、温湿度传感器、无功补偿装置、储能变流器、柔直换流器等。利用融合终端可以实现各种运行数据不同时间尺度的采集与上报、设备隐患的监测预警、电能质量治理、就地协调运行控制以及故障研判的功能。优选的，融合终端内部还可以部署应用程序，来实现无功快速补偿、电动汽车的有序充电、台区故障条件下由分布式储能、电源进行功率支撑、柔性互联系统转供电等策略。由于智能融合终端本身属于现有技术，此处不对其原理和结构进行详细说明。
智能电容器，根据国网公司配电网工程典型设计要求，200kVA～400kVA变压器无功补偿电容按120kVar容量配置，200kVA以下变压器无功补偿电容不配置或按60kVar容量配置。此外，智能电容器还需要通过智能融合终端实现无功需量自动投切。
电压源型逆变器，通过电抗器并联在电网上，通过融合终端检测系统的功率因数以及无功需量，可以快速发出大小相等，相位相反的无功。
电压源型逆变器和智能电容器的区别在于，智能电容器智能实现整机的投切，即阶跃式的无功补偿；而电压源型逆变器可实现无功连续补偿，两者结合减少电压源型逆变器的容量，并保持系统实时高功率因数。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (6)

1.一种低压综合配电箱，其特征在于，包括：
主电路，由变压器输入的电流送入低压综合配电箱，经过总断路器，连接到本地三相交流线路；
若干出线端，并联于所述本地三相交流线上，所述若干出线端上还设置有若干个断路器；
双电源回路，包括不间断电源和双电源切换开关；
其中，所述双电源回路，备用电源端连接到所述若干断路器中任意一个的下游，默认电源端连接到所述总断路器的上游，所述双电源回路能够在在主电路断电且双向换流器重新启动后切换至备用电源供电。
2.根据权利要求1所述的低压综合配电箱，其特征在于，所述出线端包括第一出线端、第二出线端、第三出线端，所述第一出线端上设置有第一断路器，所述第二出线端上设置有第二断路器，所述第三出线端上设置有第三断路器。
3.根据权利要求2所述的低压综合配电箱，其特征在于，所述双电源回路，一段连接到所述第一断路器下游，另一端连接到所述总断路器的上游。
4.根据权利要求1所述的低压综合配电箱，其特征在于，所述综合配电箱应用于台区内含分布式储能、电源或进行柔性互联的电力系统内，所述不间断电源能够提供分钟级的电量支持。
5.根据权利要求4所述的低压综合配电箱，其特征在于，所述双电源回路，备用电源端连接柔直互联换流器、储能变流器等分布式电源的断路器下游。
6.根据权利要求1所述的低压综合配电箱，其特征在于，所述综合配电箱还包括智能融合终端，所述智能融合终端能够实现各种运行数据不同时间尺度的采集和上报、设备隐患的监测预警、电能质量治理、就地协调运行控制以及故障研判。
CN202110932116.9A 2021-08-13 2021-08-13 一种低压综合配电箱 Pending CN113783285A (zh)

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CN117154561A (zh) * 2023-11-01 2023-12-01 四川汉舟电气股份有限公司 一体化ups开关柜、电气柜及ups柜的拆装方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117154561A (zh) * 2023-11-01 2023-12-01 四川汉舟电气股份有限公司 一体化ups开关柜、电气柜及ups柜的拆装方法
CN117154561B (zh) * 2023-11-01 2024-01-05 四川汉舟电气股份有限公司 一体化ups开关柜、电气柜及ups柜的拆装方法

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