CN102545232A - Distributed type intelligent reactive compensation box - Google Patents

Distributed type intelligent reactive compensation box Download PDF

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Publication number
CN102545232A
CN102545232A CN2010105782473A CN201010578247A CN102545232A CN 102545232 A CN102545232 A CN 102545232A CN 2010105782473 A CN2010105782473 A CN 2010105782473A CN 201010578247 A CN201010578247 A CN 201010578247A CN 102545232 A CN102545232 A CN 102545232A
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reactive power
compensation
capacitor
intelligent
current
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孙继光
白喜山
李淑芳
陈岳
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Suihua Electric Power Bureau
State Grid Corp of China SGCC
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Suihua Electric Power Bureau
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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
    • 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

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Abstract

The invention provides a distributed type intelligent reactive compensation box, relates to a reactive compensation device, and in particular relates to a distributed type intelligent reactive compensation device which is applicable to being mounted at the terminal of a distribution line of a rural power grid and meter box incoming line ends of residential quarter apartments, high-rise residential building floors and office floors of cities and towns. The device can save energy and reduce loss, and takes a controller as a core; and automatic tracking compensation and manual compensation can be realized according to the reactive distribution condition of a system. Not only can output of a transformer be improved, but also a power factor of a user is improved, the voltage quality of the terminal of the line is improved and the line loss is reduced. The inner part of the distributed type intelligent reactive compensation box utilizes an advanced alternative-current sampling reactive controller and a reliable cylindrical capacitor, and a capacitor switching device utilizes a novel intelligent alternative-current contactor, so that the switching of the capacitor is more reliable. The device provided by the invention can be used for displaying average values of current, voltage, power factors and harmonic distortion, switching states of the capacitor and the like.

Description

一种分散式智能无功补偿箱A Distributed Intelligent Reactive Power Compensation Box

技术领域 technical field

本发明涉及一种无功补偿装置，特别指适用于安装在农网配电线路末端及城镇的居民小区单元房、高层住宅楼层、办公楼层的表箱进线端的分散式智能无功补偿装置。The invention relates to a reactive power compensation device, in particular to a distributed intelligent reactive power compensation device suitable for installation at the end of power distribution lines in rural power grids and at the inlet ends of meter boxes in residential quarters, high-rise residential floors, and office floors in cities and towns.

背景技术 Background technique

目前，公知的配电线路的无功补偿，均采用在变压器出线端集中补偿，其优点是补偿电容容量大，可提高变压器出力。但无法解决从变压器出线端到用户之间由于线路损耗而产生的端电压质量下降。At present, the reactive power compensation of the known distribution lines all adopts centralized compensation at the outlet end of the transformer, which has the advantage of large compensation capacitor capacity, which can increase the output of the transformer. However, it cannot solve the terminal voltage quality degradation caused by line loss between the transformer outlet end and the user.

发明内容 Contents of the invention

为了克服现有的从变压器到用户端的线路损耗及末端电压质量的不足，本发明提供一种新型补偿装置，该产品即可以实现变压器出线端补偿，提高变压器出力，也可以安装在线路末端，对负荷就地补偿，提高用户的功率因数。In order to overcome the existing line loss from the transformer to the user end and the lack of terminal voltage quality, the present invention provides a new type of compensation device. This product can realize the compensation of the transformer outlet end, improve the output of the transformer, and can also be installed at the end of the line. The load is compensated on site to improve the user's power factor.

本发明解决其技术问题所采用的技术方案是：该装置采用分散式设计，且具有智能无功补偿功能，装置内部采用先进的交流采样无功控制器和可靠的圆柱形电容，根据用户用电特点设计，可实现三相补偿，合理的补偿容量和电容容量分配方案，提高用户端电压质量，真正将公用变配电线路线损降低为最小。采样物理量的选择是根据现场设备的无功功率实际采集的数据来计算的，实现电容的自动投切。控制器根据采样的I、U计算出现场实际的无功负荷，根据现场实际的无功功率及电网实际输出无功功率情况来判定需要补多少无功。补多少无功取决与用户想要实现功率因数的目标值，例如：目标值是0.98，那么装置就根据这个目标功率因数，计算出目标无功，然后根据现场的电压，电流，功率因数计算出现场实时的无功功率。当实测功率因数滞后目标功率因数，然后实测的无功功率减去目标功率后大于第一组电容器的设置值后自动投入第一组电容，依此循环补偿，直到达到所设置的目标功率因数。当实测功率因数超前目标功率因数后，可自动切除电容。The technical solution adopted by the present invention to solve its technical problems is: the device adopts a decentralized design and has an intelligent reactive power compensation function. The device uses an advanced AC sampling reactive power controller and a reliable cylindrical capacitor. The characteristic design can realize three-phase compensation, reasonable compensation capacity and capacitance capacity allocation scheme, improve the voltage quality of the user end, and truly reduce the loss of public transformation and distribution lines to the minimum. The selection of the sampling physical quantity is calculated according to the data actually collected by the reactive power of the field equipment, so as to realize the automatic switching of the capacitor. The controller calculates the actual reactive power load on site based on the sampled I and U, and determines how much reactive power needs to be supplemented based on the actual reactive power on site and the actual output reactive power of the grid. How much reactive power to supplement depends on the target value of the power factor that the user wants to achieve. For example, if the target value is 0.98, then the device calculates the target reactive power according to the target power factor, and then calculates it based on the voltage, current and power factor on site. On-site real-time reactive power. When the measured power factor lags behind the target power factor, then the measured reactive power minus the target power is greater than the set value of the first set of capacitors, and then the first set of capacitors is automatically input, and the compensation cycle is repeated until the set target power factor is reached. When the measured power factor exceeds the target power factor, the capacitor can be automatically cut off.

本发明的有益效果是可根据用户用电特点设计实现三相补偿或分相补偿功能，合理的补偿容量和电容容量分配方案，提高用户端电压质量，真正将公用变配电线路线损降低为最小。The beneficial effect of the present invention is that the function of three-phase compensation or phase-separated compensation can be designed and realized according to the user's electricity consumption characteristics, and the reasonable compensation capacity and capacitance capacity allocation scheme can improve the voltage quality of the user end, and truly reduce the line loss of the public transformation and distribution line to minimum.

附图说明 Description of drawings

图1是箱体正面平面布置图。Figure 1 is a plan view of the front of the box.

图2是箱体北面平面布置图。Fig. 2 is the layout plan of the north side of the cabinet.

图3是电气原理接线图。Figure 3 is a wiring diagram of the electrical principle.

具体实施方式 Detailed ways

总断路器(D)接三相电源，保险(R)为控制器(J K W B)采样电压的保险，断路器D1、D2、D3、D4为控制电容器的开关，起保护作用；控制器(J K W B)根据系统的无功情况控制各路电容器的投切，控制电容投切的切换装置(J 1-J 4)，控制各路电容器(C1-C4)的投切。电容投切的切换装置(J1-J4)，它的动作指令来自控制器(J K W B)，控制器J K W B的采样电流与电压不能同相。The main circuit breaker (D) is connected to the three-phase power supply, the insurance (R) is the insurance for the sampling voltage of the controller (J K W B ), and the circuit breakers D1, D2, D3, D4 are switches for controlling the capacitors, which play a protective role; the controller (J K W B) Control the switching of each capacitor according to the reactive power of the system, control the switching device (J 1-J 4) of capacitor switching, and control the switching of each capacitor (C1-C4). The switching device for capacitor switching (J1-J4), its action command comes from the controller (J K W B), and the sampling current and voltage of the controller J K W B cannot be in the same phase.

Claims (7)

1.一种分散式智能无功补偿箱，其特征是：电气设备分正反两面布置，主要电器元件：自愈式电力电容器、空气开关、控制器、快速熔断保险、智能分散末端智能无功补偿箱内部采用先进的交流采样无功控制器和可靠的圆柱形电容；正面总开关取三相电源，控制器的采样电流与电压不能同相；反面布置着控制电容投切的切换装置及电容器。1. A distributed intelligent reactive power compensation box, which is characterized by: electrical equipment is arranged on both sides, the main electrical components: self-healing power capacitors, air switches, controllers, fast fuse insurance, intelligent decentralized terminal intelligent reactive power The interior of the compensation box adopts advanced AC sampling reactive power controller and reliable cylindrical capacitor; the main switch on the front uses three-phase power supply, and the sampling current and voltage of the controller cannot be in the same phase; the switching device and capacitor for controlling capacitor switching are arranged on the reverse side. 2.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：控制器是无功补偿的核心部件，是这个装置的指挥系统采样的电压一般取B、C相电压，电流取A相电流。2. A kind of decentralized intelligent reactive power compensation box according to claim 1 is characterized in that: the controller is the core component of reactive power compensation, and the voltage sampled by the command system of this device generally gets B and C phase voltages, The current takes the A-phase current. 3.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：实现最佳补偿控制，控制物理量为无功功率；电网缺多少无功，设备投入相应的电容器组补偿等量的无功功率，进行自动跟踪补偿。3. A kind of decentralized intelligent reactive power compensation box according to claim 1, characterized in that: to achieve optimal compensation control, the control physical quantity is reactive power; how much reactive power is lacking in the power grid, and the equipment is put into corresponding capacitor bank compensation, etc. The amount of reactive power is automatically tracked and compensated. 4.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：控制单元采用新型智能交流接触器，可以实现自动/手动控制，无控制带来的涌流、谐波注入及触点烧损现象，更无晶闸管控制的高温升高能耗问题。4. A decentralized intelligent reactive power compensation box according to claim 1, characterized in that: the control unit adopts a new type of intelligent AC contactor, which can realize automatic/manual control, without inrush current, harmonic injection and There is no contact burning phenomenon, and there is no problem of high temperature rise and energy consumption controlled by thyristors. 5.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：控制单元采用新型智能交流接触器，可以实现自动/手动控制，无控制带来的涌流、谐波注入及触点烧损现象，更无晶闸管控制的高温升高能耗问题。5. A decentralized intelligent reactive power compensation box according to claim 1, characterized in that: the control unit adopts a new type of intelligent AC contactor, which can realize automatic/manual control without inrush current, harmonic injection and There is no contact burning phenomenon, and there is no problem of high temperature rise and energy consumption controlled by thyristors. 6.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：补偿器应用灵活，即可以应用在变压器的低压侧，实现对整个台区的集中补偿，也可以根据补偿电容器离负载越近补偿效果越好的原则，在各低压输出支路上选择补偿接入点，使区域无功分布达到理想状态，达到节能降损的目的。6. A decentralized intelligent reactive power compensation box according to claim 1, characterized in that: the compensator is flexible in application, that is, it can be applied to the low-voltage side of the transformer to realize centralized compensation for the entire station area, or it can be based on the compensation The closer the capacitor is to the load, the better the compensation effect. Select the compensation access point on each low-voltage output branch to make the regional reactive power distribution reach an ideal state and achieve the purpose of energy saving and loss reduction. 7.根据权利要求1所述的一种分散式智能无功补偿箱，其特征是：具有过压、欠压、小电流、谐波越限四相保护功能。7. A decentralized intelligent reactive power compensation box according to claim 1, characterized in that it has four-phase protection functions of overvoltage, undervoltage, small current, and harmonic limit violation.
CN2010105782473A 2010-12-08 2010-12-08 Distributed type intelligent reactive compensation box Pending CN102545232A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102946108A (en) * 2012-11-21 2013-02-27 保定供电公司 Voltage automatic compensation device
CN104242322A (en) * 2014-09-22 2014-12-24 国家电网公司 Automatic rural network low-voltage in situ reactive compensation adjustment method
CN105953046A (en) * 2016-06-20 2016-09-21 无锡虹业自动化工程有限公司 Elevating type SVC device
CN107819332A (en) * 2017-11-02 2018-03-20 成都春源食品有限公司 A kind of method of transformer reactive compensation
CN111969729A (en) * 2020-08-28 2020-11-20 银云智能科技(广州)有限公司 Running state evaluation method for capacitance compensation system of power distribution room
CN115549121A (en) * 2022-10-20 2022-12-30 国网福建省电力有限公司建瓯市供电公司 Compensation method for line loss reduction of transformer area

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2468202Y (en) * 2000-11-08 2001-12-26 烟台东方电子信息产业股份有限公司 Low-voltage integrated reactive power compensation device
CN2924884Y (en) * 2006-06-26 2007-07-18 赵树军 Reactive power compensation control box

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2468202Y (en) * 2000-11-08 2001-12-26 烟台东方电子信息产业股份有限公司 Low-voltage integrated reactive power compensation device
CN2924884Y (en) * 2006-06-26 2007-07-18 赵树军 Reactive power compensation control box

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102946108A (en) * 2012-11-21 2013-02-27 保定供电公司 Voltage automatic compensation device
CN104242322A (en) * 2014-09-22 2014-12-24 国家电网公司 Automatic rural network low-voltage in situ reactive compensation adjustment method
CN105953046A (en) * 2016-06-20 2016-09-21 无锡虹业自动化工程有限公司 Elevating type SVC device
CN107819332A (en) * 2017-11-02 2018-03-20 成都春源食品有限公司 A kind of method of transformer reactive compensation
CN111969729A (en) * 2020-08-28 2020-11-20 银云智能科技(广州)有限公司 Running state evaluation method for capacitance compensation system of power distribution room
CN115549121A (en) * 2022-10-20 2022-12-30 国网福建省电力有限公司建瓯市供电公司 Compensation method for line loss reduction of transformer area

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Address after: 152061 Suihua City, Heilongjiang province Beilin District Xizhimen South Road No. 38

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Application publication date: 20120704