CN111030129A - 屋顶光伏发电用tct型低压静止无功补偿装置 - Google Patents

屋顶光伏发电用tct型低压静止无功补偿装置 Download PDF

Info

Publication number
CN111030129A
CN111030129A CN201911421433.3A CN201911421433A CN111030129A CN 111030129 A CN111030129 A CN 111030129A CN 201911421433 A CN201911421433 A CN 201911421433A CN 111030129 A CN111030129 A CN 111030129A
Authority
CN
China
Prior art keywords
tct
power generation
photovoltaic power
transformer
branch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911421433.3A
Other languages
English (en)
Inventor
侯干
于振振
谢春生
付大志
门海龙
于垂右
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Anqi Electric Co Ltd
DATANG SHANDONG CLEAN ENERGY DEVELOPMENT CO LTD
Original Assignee
Qingdao Anqi Electric Co Ltd
DATANG SHANDONG CLEAN ENERGY DEVELOPMENT CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Anqi Electric Co Ltd, DATANG SHANDONG CLEAN ENERGY DEVELOPMENT CO LTD filed Critical Qingdao Anqi Electric Co Ltd
Priority to CN201911421433.3A priority Critical patent/CN111030129A/zh
Publication of CN111030129A publication Critical patent/CN111030129A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
    • 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
    • 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
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

屋顶光伏发电用TCT型低压静止无功补偿装置。光伏发电是清洁能源，光伏每千瓦投资成本不断下降，屋顶光伏电站，降低企业能耗。本发明组成包括：所述的屋顶光伏发电用TCT型低压静止无功补偿装置包括设置在400KV侧的输出连续可调的感性无功的一个TCT支路和输出容性无功功率的两个TSC支路，以TSC支路作分级粗调、以TCT支路作相控细调，TCT支路的容量为TSC支路容量的1/4，所述的TCT支路为磁集成晶闸管控制变压器，是在变压器的二次绕组与电抗器绕组串接后接晶闸管。本发明用于屋顶光伏发电TCT型低压静止无功补偿。

Description

屋顶光伏发电用TCT型低压静止无功补偿装置
技术领域：
本发明涉及一种屋顶光伏发电用TCT型低压静止无功补偿装置，尤其是在自发自用、余电上网的企业屋顶光伏发电模式。
背景技术：
光伏发电是清洁能源，光伏每千瓦投资成本不断下降，屋顶光伏电站，降低企业能耗。
光伏发电接入配电网对电压有一定的提升作用，也带来其他的其他问题，例如企业功率因素降低带来利率调整电费，逆变器的带来谐波问题，电容器组谐波放大问题，电源切换过程中的暂态过电压问题等等。屋顶光伏电站的可靠运行与电网结构和用户的电气拓扑结构、用户的用电习惯紧密相关，目前，分布式并网光伏发电中用到的逆变器均以电流源并网，即不控制并网点电压。储能装置的性价比太低，所以最优的解决方案就是采用复合型静止型无功补偿器SVC来进行电压和无功的综合控制。
发明内容：
本发明的目的是为了解决屋顶光伏电站的存在的电压波动，功率因数和谐振过电压等问题，本发明提供一种TCT型静止无功补偿装置。
上述的目的通过以下的技术方案实现：
一种屋顶光伏发电用TCT型低压静止无功补偿装置，所述的屋顶光伏发电用TCT型低压静止无功补偿装置包括设置在400KV侧的输出连续可调的感性无功的一个TCT支路，输出容性无功功率的两个TSC支路以及控制和保护系统，以 TSC 支路作分级粗调、以 TCT支路作相控细调，TCT支路的容量为TSC支路容量的1/41/3；
本装置的采样点来自于在输线进线侧的10kV公共连接点处设置的电压互感器和电流互感器，实时采集系统电压，自动判断系统谐振状态，迅速改变TCT的阻抗至最小，消除系统谐振，此时TCT的容量达到最大，抑制电压升高；
所述的TCT支路和两个TSC支路上都设置有电流互感器，实时监测电容器组的电流，一旦发生谐波放大或者电源切换过程造成的谐振发生，立即切除电容器组，避免暂态过电压造成设备损坏；
所述的TCT支路为磁集成晶闸管控制变压器，是在其变压器的二次绕组与电抗器绕组反向串联接后接双向晶闸管。
所述的屋顶光伏发电用TCT型低压静止无功补偿装置，所述的输线的10KV处的电压互感器和电流互感器为功率因数采样点，在轻载时补偿进线变压器和光伏发电隔离变压器自身的励磁无功功率。
所述的屋顶光伏发电用TCT型低压静止无功补偿装置，所述的TSC支路为晶闸管投切电容器。
有益效果：
1.本发明功率因数采样点儿在10kV侧，能够在轻载时补偿进线变压器和光伏发电隔离变压器自身的励磁无功功率，保证计量考核点儿10kV侧的功率因数大于0.99。
本发明采用磁集成技术的晶闸管控制变压器型可控电抗器，即TCT型可控电抗器，响应速度快；
3.本发明实时采集系统电压，自动判断系统谐振状态，迅速改变TCT的阻抗至最小，消除系统谐振，此时TCT的容量达到最大，抑制电压升高；
4.本发明实时监测电容器组的电流，一旦发生谐波放大或者电源切换过程造成的谐振发生，立即切除电容器组，避免暂态过电压造成设备损坏。
附图说明：
附图1是本发明的原理图；
具体实施方式：
实施例1：
一种屋顶光伏发电用TCT型低压静止无功补偿装置，所述的屋顶光伏发电用TCT型低压静止无功补偿装置包括设置在400KV侧的输出连续可调的感性无功的一个TCT支路，输出容性无功功率的两个TSC支路以及控制和保护系统，以 TSC 支路作分级粗调、以 TCT支路作相控细调，TCT支路的容量为TSC支路容量的1/41/3；
本装置的采样点来自于在输线进线侧的10kV公共连接点处设置的电压互感器和电流互感器，实时采集系统电压，自动判断系统谐振状态，迅速改变TCT的阻抗至最小，消除系统谐振，此时TCT的容量达到最大，抑制电压升高；
所述的TCT支路和两个TSC支路上都设置有电流互感器，实时监测电容器组的电流，一旦发生谐波放大或者电源切换过程造成的谐振发生，立即切除电容器组，避免暂态过电压造成设备损坏；
所述的TCT支路为磁集成晶闸管控制变压器，是在其变压器的二次绕组与电抗器绕组反向串联接后接双向晶闸管。
实施例2：
根据实施例1所述的屋顶光伏发电用TCT型低压静止无功补偿装置，所述的输线的10KV处的电压互感器和电流互感器为功率因数采样点，在轻载时补偿进线变压器和光伏发电隔离变压器自身的励磁无功功率。
实施例3：
根据实施例1或2所述的屋顶光伏发电用TCT型低压静止无功补偿装置，所述的TSC支路为晶闸管投切电容器。

Claims (3)

1.一种屋顶光伏发电用TCT型低压静止无功补偿装置，其特征是：所述的屋顶光伏发电用TCT型低压静止无功补偿装置包括设置在400KV侧的输出连续可调的感性无功的一个TCT支路，输出容性无功功率的两个TSC支路以及控制和保护系统，以 TSC 支路作分级粗调、以TCT支路作相控细调，TCT支路的容量为TSC支路容量的1/41/3；
本装置的采样点来自于在输线进线侧的10kV公共连接点处设置的电压互感器和电流互感器，实时采集系统电压，自动判断系统谐振状态，迅速改变TCT的阻抗至最小，消除系统谐振，此时TCT的容量达到最大，抑制电压升高；
所述的TCT支路和两个TSC支路上都设置有电流互感器，实时监测电容器组的电流，一旦发生谐波放大或者电源切换过程造成的谐振发生，立即切除电容器组，避免暂态过电压造成设备损坏；
所述的TCT支路为磁集成晶闸管控制变压器，是在其变压器的二次绕组与电抗器绕组反向串联接后接双向晶闸管。
2.根据权利要求1所述的屋顶光伏发电用TCT型低压静止无功补偿装置，其特征是：所述的输线的10KV处的电压互感器和电流互感器为功率因数采样点，在轻载时补偿进线变压器和光伏发电隔离变压器自身的励磁无功功率。
3.根据权利要求2所述的屋顶光伏发电用TCT型低压静止无功补偿装置，其特征是：所述的TSC支路为晶闸管投切电容器。
CN201911421433.3A 2019-12-31 2019-12-31 屋顶光伏发电用tct型低压静止无功补偿装置 Pending CN111030129A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911421433.3A CN111030129A (zh) 2019-12-31 2019-12-31 屋顶光伏发电用tct型低压静止无功补偿装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911421433.3A CN111030129A (zh) 2019-12-31 2019-12-31 屋顶光伏发电用tct型低压静止无功补偿装置

Publications (1)

Publication Number Publication Date
CN111030129A true CN111030129A (zh) 2020-04-17

Family

ID=70201707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911421433.3A Pending CN111030129A (zh) 2019-12-31 2019-12-31 屋顶光伏发电用tct型低压静止无功补偿装置

Country Status (1)

Country Link
CN (1) CN111030129A (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201181845Y (zh) * 2007-07-31 2009-01-14 湖南大学 基于定点dsp的静止无功补偿器
CN201860120U (zh) * 2010-11-25 2011-06-08 广东雅达电子股份有限公司 一种具有谐波超限保护的无功补偿器
CN102122821A (zh) * 2010-12-17 2011-07-13 中国电力科学研究院 一种抑制超、特高压空载线路合闸后工频电压升高的方法
CN104319790A (zh) * 2014-11-14 2015-01-28 国家电网公司 一种6脉动tct式可控并联电抗器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201181845Y (zh) * 2007-07-31 2009-01-14 湖南大学 基于定点dsp的静止无功补偿器
CN201860120U (zh) * 2010-11-25 2011-06-08 广东雅达电子股份有限公司 一种具有谐波超限保护的无功补偿器
CN102122821A (zh) * 2010-12-17 2011-07-13 中国电力科学研究院 一种抑制超、特高压空载线路合闸后工频电压升高的方法
CN104319790A (zh) * 2014-11-14 2015-01-28 国家电网公司 一种6脉动tct式可控并联电抗器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吕志斗, 辽宁科学技术出版社 *

Similar Documents

Publication Publication Date Title
CN103560520B (zh) 适用于故障穿越的统一电能质量控制器及控制方法
Guo et al. An overview of series-connected power electronic converter with function extension strategies in the context of high-penetration of power electronics and renewables
Shevchenko et al. Use of capacitor batteries to improve the quality of electrical energy
Suja et al. Power quality improvement in grid connected wind energy system using STATCOM
Babu et al. A Review on Dynamic Voltage Restorer in power systems concerned to the issues of Power Quality
Kechroud et al. Taking the experience from flexible AC transmission systems to flexible AC distribution systems
Mahela et al. Power quality improvement in hybrid power system using synchronous reference frame theory based distribution static compensator with battery energy storage system
Huang et al. Voltage rise regulation with voltage source inverter in grid connected pv generation system
Tian et al. Research status analysis of reactive power compensation technology for power grid
CN111030129A (zh) 屋顶光伏发电用tct型低压静止无功补偿装置
Kalita et al. FACTS controllers' impact on Power Quality: A comparative analysis
CN202084937U (zh) Mcr型svc装置
Song-cen et al. Mitigation of voltage sags by grid-connected distributed generation system in series and shunt configurations
Lei et al. Coordinated control strategy based on network parameters for voltage sags compensating in Microgrid
Li et al. High Voltage Ride-Through Control Strategy for Two-Stage PV Grid-Connected Systems
CN219892969U (zh) 高低压无功补偿装置
Sharma et al. Minimization of Impact of Disturbances on Performance of Utility Grid with Wind Energy Penetration Using Battery Energy Storage Device
CN209375148U (zh) 主动配电网中配电变压器主动响应控制装置
Kureel et al. Pv-Statcom Power Quality Enhancement with Shunt Active Power Filter
Zhou et al. Overview on VSC-HVDC systems based on PV
Guan-qiu et al. Research on Power Electronics Technology in Modern Power Grid
Joy et al. Electrical Power Flow Improvement by Reducing Fault Current using FACTS Devices
Zhang et al. Research on the Coordinated control Strategy of fault crossing capability of offshore wind power multi-terminal flexible DC system
Bhatt et al. Voltage Improvement in Distribution System using Shunt FACTS Device
Kumar et al. Voltage Enhancement In a Distribution Power System With SMES Based DVR

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200417

WD01 Invention patent application deemed withdrawn after publication