CN2938505Y - Intelligent reactive power compensation distribution box - Google Patents

Intelligent reactive power compensation distribution box Download PDF

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CN2938505Y
CN2938505Y CNU2006201189774U CN200620118977U CN2938505Y CN 2938505 Y CN2938505 Y CN 2938505Y CN U2006201189774 U CNU2006201189774 U CN U2006201189774U CN 200620118977 U CN200620118977 U CN 200620118977U CN 2938505 Y CN2938505 Y CN 2938505Y
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reactive power
intellectual
power compensation
capacitor
distribution box
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叶卫平
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Zhejiang Truly Electric Co ltd
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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QUNLI POWER EQUIPMENT MANUFACTURING Co Ltd HANGZHOU
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    • YGENERAL 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
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    • Y02E40/30Reactive power compensation

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Abstract

本实用新型涉及一种具有低压计量、测控、配电、智能无功补偿等功能的供配电及无功补偿装置,它包括箱体和计量总成,进线开关上的三相电源主线分别穿过电流互感器分别与出线开关和智能电容器进线端连接,出线开关的出线端接用户,电流互感器感应到的信号接综合检测仪的信号输入端,综合检测仪的通信接口与智能电容器的通信接口连接,综合检测仪检测到的数据通过GPRS以短消息的方式发送至监控系统。

Figure 200620118977

The utility model relates to a power supply and distribution and reactive power compensation device with the functions of low-voltage measurement, measurement and control, power distribution, and intelligent reactive power compensation. The current transformer is connected to the outlet switch and the inlet terminal of the smart capacitor respectively, the outlet terminal of the outlet switch is connected to the user, the signal sensed by the current transformer is connected to the signal input terminal of the comprehensive detector, and the communication interface of the comprehensive detector is connected to the smart capacitor. The communication interface is connected, and the data detected by the comprehensive detector is sent to the monitoring system in the form of a short message through GPRS.

Figure 200620118977

Description

智能式无功补偿配电箱Intelligent reactive power compensation distribution box

技术领域:Technical field:

本实用新型涉及一种具有低压计量、测控、配电、智能无功补偿等功能的供配电及无功补偿装置,属无功补偿配电箱制造领域。The utility model relates to a power supply and distribution and reactive power compensation device with the functions of low-voltage measurement, measurement and control, power distribution, intelligent reactive power compensation, etc., and belongs to the field of reactive power compensation distribution box manufacturing.

背景技术:Background technique:

本申请人所有专利号为ZL200420048053.2、名称“计量开关补偿箱”,该计量开关补偿箱,它包括箱体,计量总成(1)的出线端和补偿总成(3)的进线端与出线总成(2)的进线端并接,计量总成(1)由互感器、电度表及接线盒构成,出线总成(2)由刀熔开关构成,补偿总成(3)由空开、接触器、电容器、自补器、负荷监测仪及避雷器构成。其不足之处:一是结构由一台配变综合测控装置和多台低压电力电容器、交流接触器及其他保护器件等在户外式设备箱内散装而成;二是功能由一台配变综合测控装置和数台智式电容器在户外式设备箱内积木式组装而成;三是产品结构相对复杂,体积大,标准化、规范化困难;四是产品一旦形成后,其配置的调整和无功补偿容量的优化十分困难;五是器件多、接点多、导线长、运行能耗大;六是配变综合测控装置是整机可靠性的瓶颈,测控装置一旦故障,则整机失效;七是整体技术难度大,故障诊断和现场处理双较困难、所需时间长;八是产品为整体性设备,以远景需要配置,一次性投资。The patent number of the applicant is ZL200420048053.2, and the name is "Metering Switch Compensation Box". It is connected in parallel with the incoming line end of the outgoing line assembly (2), the metering assembly (1) is composed of a transformer, a watt-hour meter and a junction box, the outgoing line assembly (2) is composed of a knife fuse switch, and the compensation assembly (3) It consists of circuit breaker, contactor, capacitor, self-compensator, load monitor and lightning arrester. Its shortcomings: First, the structure is composed of a distribution transformer integrated measurement and control device and multiple low-voltage power capacitors, AC contactors and other protection devices in bulk in an outdoor equipment box; second, the function is integrated by a distribution transformer The measurement and control device and several intelligent capacitors are assembled by building blocks in the outdoor equipment box; the third is that the product structure is relatively complex, the volume is large, and it is difficult to standardize and normalize; the fourth is that once the product is formed, its configuration adjustment and reactive power compensation The optimization of capacity is very difficult; fifth, there are many devices, many contacts, long wires, and high energy consumption; sixth, the comprehensive measurement and control device of distribution transformer is the bottleneck of the reliability of the whole machine. Once the measurement and control device fails, the whole machine will fail; seventh, the overall The technology is difficult, and the fault diagnosis and on-site processing are both difficult and time-consuming; eighth, the product is a holistic device, which needs to be configured in the future and requires a one-time investment.

发明内容:Invention content:

设计目的:避免背景技术中的不足之处,设计一种具有低压计量、测控、配电、智能无功补偿等功能的智能式无功补偿配电箱。Design purpose: To avoid the deficiencies in the background technology, to design an intelligent reactive power compensation distribution box with functions such as low-voltage measurement, measurement and control, power distribution, and intelligent reactive power compensation.

设计方案:为了实现上述设计目的。智能式无功补偿配电箱系我公司研制开发的系列的配电综合测控装置和系列的智能式低压电力电容器。该产品是把低压计量、测控、配电、智能无功补偿等功能,根据不同需求以不同方式进行组合的具有高技术含量和高性价比的新一代供配电及无功补偿装置。它由隔离开关、断路器、配电综合测控装置(选用)和智能式低压电力电容器等组成。主要安装于容量30KVA-500KVA城市、乡镇公用变压器下作为电能计量、受电、馈电及调节线路功率因数、减少无功电流、降低电能损失、提高用电质量、充分发挥变压器潜力以增强电力出力能力。该产品能在环境温度变化大、电磁干扰严重的恶劣环境中长时间不间断的可靠工作。Design scheme: In order to achieve the above design purpose. The intelligent reactive power compensation distribution box is a series of integrated measurement and control devices for power distribution and a series of intelligent low-voltage power capacitors developed by our company. This product is a new generation of power supply and distribution and reactive power compensation device with high technical content and high cost performance, which combines functions such as low-voltage metering, measurement and control, power distribution, and intelligent reactive power compensation in different ways according to different needs. It is composed of isolating switch, circuit breaker, power distribution comprehensive measurement and control device (optional) and intelligent low-voltage power capacitor. It is mainly installed under public transformers with a capacity of 30KVA-500KVA in cities and towns to measure, receive, feed and adjust line power factor, reduce reactive current, reduce power loss, improve power quality, and give full play to the potential of transformers to enhance power output. ability. This product can work uninterrupted and reliable for a long time in harsh environments with large ambient temperature changes and severe electromagnetic interference.

智能式无功补偿配电箱主要用于低压配电台区的参数采集、分析、统计、贮存、无功智能式自动补偿和远程通信、控制以及电能的接受与分配等,有多种通信接口,使用GPRS或其它通道实现低压配电管理自动化和无功功率优化控制。用户可以根据条件将低压配电监测与无功补偿工程分阶段实施,无功补偿也可以在投运后根据运行参数进行调整,使配电监测和无功补偿配置优化。智能式低压电力电容器及配电综合测控装置的装卸全为插拨式,组装或者调换十分方便,可以在使用现场进行配置调整或者故障后进行更换处理。其技术方案:智能式无功补偿配电箱,它包括箱体和计量总成,进线开关(1)上的三相电源主线分别穿过电流互感器(2)分别与出线开关(5)和智能电容器(3)进线端连接,出线开关(5)的出线端接用户,电流互感器(2)感应到的信号接综合检测仪(4)的信号输入端,综合检测仪(4)的通信接口与智能电容器(3)的通信接口连接,综合检测仪(4)检测到的数据通过GPRS以短消息的方式发送至监控系统。The intelligent reactive power compensation distribution box is mainly used for parameter collection, analysis, statistics, storage, reactive power intelligent automatic compensation, remote communication, control, and electric energy reception and distribution in the low-voltage distribution station area, and has a variety of communication interfaces , using GPRS or other channels to realize low-voltage power distribution management automation and reactive power optimization control. Users can implement low-voltage power distribution monitoring and reactive power compensation projects in stages according to conditions, and reactive power compensation can also be adjusted according to operating parameters after commissioning to optimize the configuration of power distribution monitoring and reactive power compensation. The loading and unloading of intelligent low-voltage power capacitors and power distribution integrated measurement and control devices are all plug-in, which is very convenient for assembly or replacement, and can be configured and adjusted at the use site or replaced after failure. Its technical solution: an intelligent reactive power compensation distribution box, which includes a box body and a metering assembly, and the three-phase power main line on the incoming line switch (1) respectively passes through the current transformer (2) and the outgoing line switch (5) respectively. It is connected to the incoming line terminal of the smart capacitor (3), the outgoing line terminal of the outgoing line switch (5) is connected to the user, and the signal sensed by the current transformer (2) is connected to the signal input terminal of the comprehensive detector (4), and the comprehensive detector (4) The communication interface of the intelligent capacitor (3) is connected with the communication interface of the smart capacitor (3), and the data detected by the comprehensive detector (4) is sent to the monitoring system in the form of a short message through GPRS.

本实用新型与背景技术相比,一是由一台配变综合测控装置和数台智式电容器在户外式设备箱内积木式组装而成;二是功能由配变综合测控装置和智能式低电压电力电容器二者的综合,智能式电容器具有过温(反映工作电压、环境温度、电源谐波和本身漏电流等因素对电容器的影响)和过流、断相、三相不平衡等保护,测控装置一旦故障后,智能式低电压电力电容器能够自成系统工作,仍能实现低压无功自动补偿的基本功能,实现对控制器、电容器、开关电器等元器件的故障自诊断功能;三是产品结构简洁,体积小,容量实现标准化、规范化;四是可以根据情况和情况的变化灵活配置。例如可以只配置配变综合测控装置,用于配变监测,日后根据需要再配置智能式电容器;可以只配置智能式电容器,实现基本的低压无功自动补偿,日后再根据需要增配配变综合测控装置;智能式电容器可以现场调整,达到无功补偿的优化配置;五是器件少、接点少、导线短、运行能耗小;六是配变综合测控装置故障后,智能式电容器可自成系统工作,实现低压无功自动补偿功能,个别智能式电容器故障后自动退出,并不影响其余工作。智能式低压电力电容器可达到投切100万次的可靠性。箱内运行温度低,运行可靠性高;七是故障自诊断功能强,现场故障查找容易;主要组件为全插拔,调换、装卸方便;八是产品为积木式组件设备,可按当前需要和经济能力配置,日后可逐步增加配置,实现分次投资。同样容量的设备,体积比常规型的小得多;九是产品导线损、接点损和器件损大为减少,降低了设备本身能耗,同时降低了箱内运行温度,提高了运行可靠性,并且接线简单、结构紧凑简洁、成套性强、占地面积小、安装简捷、运行安全可靠、操作维修简便等优点。Compared with the background technology, the utility model is firstly composed of a distribution transformer comprehensive measurement and control device and several intelligent capacitors assembled in the outdoor equipment box; The combination of voltage and power capacitors, smart capacitors have over-temperature (reflecting the influence of factors such as working voltage, ambient temperature, power harmonics and leakage current on capacitors) and over-current, phase failure, and three-phase unbalance protection. Once the measurement and control device fails, the intelligent low-voltage power capacitor can work as a self-contained system, and can still realize the basic function of low-voltage reactive power automatic compensation, and realize the fault self-diagnosis function of controllers, capacitors, switching appliances and other components; the third is The product structure is simple, the volume is small, and the capacity is standardized and normalized; the fourth is that it can be flexibly configured according to the situation and the change of the situation. For example, it is possible to only configure the distribution transformer comprehensive measurement and control device for distribution transformer monitoring, and then configure intelligent capacitors according to needs in the future; it is possible to configure only intelligent capacitors to realize basic low-voltage reactive power automatic compensation, and to add distribution transformer integration in the future as needed Measurement and control device; the intelligent capacitor can be adjusted on site to achieve the optimal configuration of reactive power compensation; fifth, there are fewer devices, fewer contacts, short wires, and low energy consumption; The system works to realize the low-voltage reactive power automatic compensation function, and some intelligent capacitors will automatically exit after failure, without affecting the rest of the work. The intelligent low-voltage power capacitor can achieve the reliability of switching 1 million times. The operating temperature inside the box is low, and the operating reliability is high; Seventh, the fault self-diagnosis function is strong, and on-site fault finding is easy; the main components are fully pluggable, easy to replace, assemble and disassemble; The allocation of economic capacity can be gradually increased in the future to realize investment in batches. The equipment with the same capacity is much smaller than the conventional type; Ninthly, the product wire loss, contact loss and device loss are greatly reduced, which reduces the energy consumption of the equipment itself, and at the same time reduces the operating temperature in the box and improves the operating reliability. And it has the advantages of simple wiring, compact and simple structure, strong completeness, small footprint, simple installation, safe and reliable operation, and easy operation and maintenance.

附图说明:Description of drawings:

图1是智能式无功补偿配电箱的主视结构示意图。Figure 1 is a schematic diagram of the front view of the intelligent reactive power compensation distribution box.

图2是智能式无功补偿配电箱的接线结构示意图。Figure 2 is a schematic diagram of the wiring structure of the intelligent reactive power compensation distribution box.

具体实施方式:Detailed ways:

实施例1:参照附图1~3。智能式无功补偿配电箱,它包括箱体和计量总成,进线开关1上的三相电源主线分别穿过电流互感器2分别与出线开关5和智能电容器3进线端连接,进线开关1零线接综合检测仪零线接线端。出线开关5的出线端接用户,电流互感器2感应到的信号接综合检测仪4的信号输入端,综合检测仪4内设有GPRS。综合检测仪4的通信接口与智能电容器3的通信接口连接,综合检测仪4检测到的数据通过GPRS以短消息的方式发送至监控系统,或综合检测仪4设有红外数据通信接口或蓝牙数据通信接口。智能式电容器设有过温、过流、断相、三相不平衡保护电路,智能式电容器及配电综合测控装置(检测仪)的装卸全为插拨式结构。智能式电容器(3)设有单相电容器和三相电容器。Embodiment 1: with reference to accompanying drawing 1~3. The intelligent reactive power compensation distribution box includes a box body and a metering assembly. The main line of the three-phase power supply on the incoming line switch 1 passes through the current transformer 2 and is respectively connected to the outgoing line switch 5 and the incoming line end of the smart capacitor 3. Line switch 1 neutral line is connected to the zero line terminal of the comprehensive detector. The outlet terminal of the outlet switch 5 is connected to the user, and the signal sensed by the current transformer 2 is connected to the signal input terminal of the comprehensive detector 4, and the comprehensive detector 4 is provided with GPRS. The communication interface of the comprehensive detector 4 is connected with the communication interface of the smart capacitor 3, and the data detected by the comprehensive detector 4 is sent to the monitoring system in the form of a short message through GPRS, or the comprehensive detector 4 is provided with an infrared data communication interface or bluetooth data Communication Interface. Intelligent capacitors are equipped with over-temperature, over-current, phase failure, and three-phase unbalanced protection circuits. The loading and unloading of intelligent capacitors and power distribution integrated measurement and control devices (detectors) are all plug-in structures. The smart capacitor (3) is provided with a single-phase capacitor and a three-phase capacitor.

本申请设有有过压、欠压、失压、过流、断相、三相不平衡、过温保护(包括过谐波和漏电流引起的过温均能反映),并能实现从控制器、开关电器到智能式低压电力电容器完整的自诊功能,完整的自诊功能便于用户的运行巡视和对设备故障的自行查找和处理。智能式低压电力电容器能反映其工作过电压、过谐波、环境过温和本身漏电流等引起的过温情况,并且智能式低压电力电容器具有零投切功能(即电压过零电容器投、电流过零电容器切除),零投切功能能减少对电网和电容器本身的冲击,提高控制的快速性,产品的零投切功能和设置过温度保护均能有效地延长智能式低压电力电容器的使用寿命,达到可靠投切100万次。This application is equipped with overvoltage, undervoltage, loss of voltage, overcurrent, phase failure, three-phase unbalance, overtemperature protection (including overheat caused by overharmonic and leakage current can reflect), and can realize from the control The complete self-diagnosis function of the device, switchgear and intelligent low-voltage power capacitor is convenient for the user to inspect the operation and find and deal with the equipment failure by himself. The intelligent low-voltage power capacitor can reflect the over-temperature situation caused by its working over-voltage, over-harmonic, environmental over-temperature and its own leakage current, etc., and the intelligent low-voltage power capacitor has the function of zero switching (that is, the voltage zero-crossing capacitor switching, the current Zero capacitor cutting), the zero switching function can reduce the impact on the power grid and the capacitor itself, and improve the rapidity of control. The product's zero switching function and setting over-temperature protection can effectively prolong the service life of intelligent low-voltage power capacitors. Reach 1 million times of reliable switching.

本申请采用智能式低压电力器、配电综合测控装置和户外设备箱三者的结合,在智能式低压电力电容器和配电综合测控装置均有的情况下,二者功能经总线式通信而融为一体。控制:进线总电源分、合控制;出线负载分、合控制及无功补偿投退控制。保护:过载、短路、防雷、电流互感器次级开路保护,雨水及接地防护。信号:智能式低压电力电容器投、切信号,故障报警信号。配电综合测控装置采用高智能化的多功能电压、无功综合控制器及配电质量监测装置,能对配电质量实时监测,与TDS系列智能式低压电力电容器配合使用时可对配变的电压、无功进行最佳优化,且可采用通信方式构成系统工作,可简化连接线提高可靠性。该装置可与其它配变、电设备和同类设备组网,实现配变、补偿、电运行集中管理自动化。控制器的控制运行方式有自动和手动。智能式低压电力电容器上有自动、手动补偿切换开关。在配置配电综合测控装置的情况下,为接受控制方式,执行配电综合测控装置的控制命令。在没有配电综合测控装置或者配电综合装置故障情况下,根据无功功效缺额自行投退。在有多台智能式低压电力电容器一起使用的情况下,智能式低压电力电容器能自动识别产生一个主机,其余为从机,构成低压无功自动控制系统进行工作。个别从机故障时自动退出,并不影响其余工作;若主机故障自动退出后,则在其余从机中自动产生一个新的主机,组成一个新的自动控制系统进行工作,开关电器实现零电压导通与零电流断开,进行快速无功补偿。测量:CT相位与变比自动测量、校正,测量参数有:配电电压、电流、无功功效、功效因数、电容器三相电流与体表温度。保护:配电过压、欠压、失压保护。电容器过电流、三相不平衡、断相、电容器体内过温度保护(包括过谐波和漏电流引起的过温均能反映)。通信:RS----485/RS----232联机接口,MODEMBUS联机规约软件。人机联系:装置上液晶显示屏、指示灯与键盘方式,装置外红外抄表器方式。This application adopts the combination of intelligent low-voltage electrical appliances, power distribution comprehensive measurement and control device and outdoor equipment box. In the case of both intelligent low-voltage power capacitors and power distribution comprehensive measurement and control devices, the functions of the two are integrated through bus communication. as one. Control: open and close control of incoming total power supply; open and close control of outgoing line load and reactive power compensation switching control. Protection: overload, short circuit, lightning protection, current transformer secondary open circuit protection, rainwater and grounding protection. Signal: intelligent low-voltage power capacitor switching, cutting signal, fault alarm signal. The power distribution integrated measurement and control device adopts a highly intelligent multifunctional voltage and reactive power integrated controller and a power distribution quality monitoring device, which can monitor the power distribution quality in real time. When used in conjunction with TDS series intelligent low-voltage power capacitors, it can The voltage and reactive power are optimally optimized, and the communication mode can be used to form the system work, which can simplify the connection line and improve the reliability. The device can be networked with other distribution transformers, electrical equipment and similar equipment to realize centralized management and automation of distribution transformers, compensation, and electrical operation. The control operation modes of the controller include automatic and manual. There is an automatic and manual compensation switching switch on the intelligent low-voltage power capacitor. In the case of configuring the power distribution comprehensive measurement and control device, in order to accept the control mode, execute the control command of the power distribution comprehensive measurement and control device. In the absence of a power distribution integrated measurement and control device or a power distribution comprehensive device failure, it will be switched on and off automatically according to the reactive power deficit. In the case of multiple intelligent low-voltage power capacitors used together, the intelligent low-voltage power capacitors can automatically identify and generate a master, and the rest are slaves, forming a low-voltage reactive power automatic control system to work. When individual slaves fail, they automatically exit without affecting the rest of the work; if the master fails and automatically exits, a new master is automatically generated among the rest of the slaves to form a new automatic control system to work, and the switching appliances realize zero-voltage conduction. On and off with zero current for fast reactive power compensation. Measurement: CT phase and transformation ratio automatic measurement and correction, measurement parameters include: distribution voltage, current, reactive power, efficiency factor, capacitor three-phase current and body surface temperature. Protection: power distribution overvoltage, undervoltage, loss of voltage protection. Capacitor overcurrent, three-phase unbalance, phase failure, capacitor body overtemperature protection (including overheat caused by overharmonic and leakage current can be reflected). Communication: RS----485/RS----232 online interface, MODEMBUS online protocol software. Human-machine connection: LCD screen, indicator light and keyboard on the device, and infrared meter reading device on the device.

需要理解到的是:上述实施例虽然对本实用新型作了比较详细的说明,但是这些说明只是对本实用新型说明性的,而不是对本实用新型的限制,任何不超出本实用新型实质精神内的发明创造,均落入本实用新型的保护范围内。It should be understood that: although the above-mentioned embodiments have described the utility model in more detail, these explanations are only illustrative of the utility model, rather than limiting the utility model, and any invention that does not exceed the essence of the utility model Creations all fall within the protection scope of the present utility model.

Claims (7)

1, a kind of intellectual reactive power compensation distribution box, it comprises casing and metering assembly, it is characterized in that: the three phase mains main line on the service entrance switch (1) pass respectively current transformer (2) respectively with go out wiretap (5) and be connected with intelligent capacitor (3) end of incoming cables, go out the outlet termination user of wiretap (5), the signal that current transformer (2) is sensed connects the signal input part of comprehensive detector (4), the communication interface of comprehensive detector (4) is connected with the communication interface of intelligent capacitor (3), and the detected data of comprehensive detector (4) are sent to supervisory control system by GPRS in the mode of short message.
2, intellectual reactive power compensation distribution box according to claim 1, it is characterized in that: comprehensive detector is provided with GPRS in (4).
3, intellectual reactive power compensation distribution box according to claim 2, it is characterized in that: comprehensive detector (4) is provided with infrared data communication interface or bluetooth data communication interface.
4, intellectual reactive power compensation distribution box according to claim 1 is characterized in that: service entrance switch (1) zero line connects comprehensive detector zero line terminals.
5, intellectual reactive power compensation distribution box according to claim 1, it is characterized in that: intellectual capacitor (3) is provided with excess temperature, overcurrent, the phase failure, three-phase imbalance protective circuit.
6, intellectual reactive power compensation distribution box according to claim 1 is characterized in that: the loading and unloading of intellectual capacitor (3) and comprehensive power distribution detector (4) are the pulling and inserting type structure entirely.
7, intellectual reactive power compensation distribution box according to claim 1, it is characterized in that: intellectual capacitor (3) is provided with single-phase electricity container and three-phase capacitor.
CNU2006201189774U 2006-06-18 2006-06-18 Intelligent reactive power compensation distribution box Expired - Lifetime CN2938505Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102306906A (en) * 2011-08-23 2012-01-04 宁波市鄞州供电局 Arrangement box for outdoor intelligent distribution and transformation terminal
CN104767208A (en) * 2015-01-20 2015-07-08 国家电网公司 A remote controllable intelligent load balancing reactive power compensation device
CN109638680A (en) * 2019-01-23 2019-04-16 深圳供电局有限公司 Outdoor distribution box
CN109980633A (en) * 2019-02-26 2019-07-05 国网浙江慈溪市供电有限公司 For the power conversion method of power grid, system and electronic equipment
CN110112749A (en) * 2019-05-31 2019-08-09 国网江苏省电力有限公司常州供电分公司 The detachable JP cabinet of low-voltage active

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102306906A (en) * 2011-08-23 2012-01-04 宁波市鄞州供电局 Arrangement box for outdoor intelligent distribution and transformation terminal
CN104767208A (en) * 2015-01-20 2015-07-08 国家电网公司 A remote controllable intelligent load balancing reactive power compensation device
CN109638680A (en) * 2019-01-23 2019-04-16 深圳供电局有限公司 Outdoor distribution box
CN109980633A (en) * 2019-02-26 2019-07-05 国网浙江慈溪市供电有限公司 For the power conversion method of power grid, system and electronic equipment
CN110112749A (en) * 2019-05-31 2019-08-09 国网江苏省电力有限公司常州供电分公司 The detachable JP cabinet of low-voltage active

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