CN112583013A - 一种电容器组运行谐波环境监测方法、装置和设备 - Google Patents

一种电容器组运行谐波环境监测方法、装置和设备 Download PDF

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CN112583013A
CN112583013A CN202011622138.7A CN202011622138A CN112583013A CN 112583013 A CN112583013 A CN 112583013A CN 202011622138 A CN202011622138 A CN 202011622138A CN 112583013 A CN112583013 A CN 112583013A
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capacitor
harmonic
voltage
capacitor bank
environment monitoring
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周原
赵东生
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Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Electric Power Research Institute of Guangdong Power Grid Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16Spectrum analysis; Fourier analysis
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00001Circuit 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 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00002Circuit 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 characterised by monitoring
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00032Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation
    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/22Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

本申请公开了一种电容器组运行谐波环境监测方法、装置和设备,实时对电容器母线互感器的二次电压和电容器电流互感器的二次电流进行监测,采用电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,提升谐波测量和判断的准确性,然后实时计算校正电压和二次电流的谐波分量,当谐波分量超出允许范围时及时发出预警,及时为无功设备的投入和退出提供判断依据,保障配电网的安全运行,解决了现有的配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁的技术问题。

Description

一种电容器组运行谐波环境监测方法、装置和设备
技术领域
本申请涉及电压监测技术领域,尤其涉及一种电容器组运行谐波环境监测方法、装置和设备。
背景技术
配电网系统谐波水平影响着电容器组的安全运行,根据GB 50227要求,需要在设计阶段对背景谐波进行评估。但是随着配电网的不断增大及分布式能源上网,导致配电网谐波水平不断上升,电能质量的下降可能导致电容器组运行环境的劣化,引起电容器运行中出现非正常现象,引起设备的损坏及电网无功补偿能力的下降。然而目前针对配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁。
发明内容
本申请提供了一种电容器组运行谐波环境监测方法、装置和设备,用于解决现有的配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁的技术问题。
有鉴于此,本申请第一方面提供了一种电容器组运行谐波环境监测方法,包括:
实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;
基于电磁式电压互感器的暂态过电压反算方法对所述二次电压进行校正,得到校正电压;
计算所述校正电压和所述二次电流的谐波分量;
判断所述谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
可选地,还包括:
在检测到异常运行状态预警信号时,对电容器合闸或对已经合闸投入的电容器进行分闸。
本申请第二方面提供了一种电容器组运行谐波环境监测装置,包括:
实时监测模块,用于实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;
电压校正模块,用于基于电磁式电压互感器的暂态过电压反算方法对所述二次电压进行校正,得到校正电压;
谐波计算模块,用于计算所述校正电压和所述二次电流的谐波分量;
预警模块,用于判断所述谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
可选地,还包括:
动作模块,用于在检测到异常运行状态预警信号时,对电容器合闸或对已经合闸投入的电容器进行分闸。
本申请第三方面提供了一种电容器组运行谐波环境监测设备,所述设备包括处理器以及存储器:
所述存储器用于存储程序代码,并将所述程序代码传输给所述处理器;
所述处理器用于根据所述程序代码中的指令执行第一方面任一种电容器组运行谐波环境监测方法。
从以上技术方案可以看出,本申请实施例具有以下优点:
本申请中提供了一种电容器组运行谐波环境监测方法,包括:实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;基于电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,得到校正电压;计算校正电压和二次电流的谐波分量;判断谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
本申请提供的电容器组运行谐波环境监测方法,实时对电容器母线互感器的二次电压和电容器电流互感器的二次电流进行监测,采用电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,提升谐波测量和判断的准确性,然后实时计算校正电压和二次电流的谐波分量,当谐波分量超出允许范围时及时发出预警,及时为无功设备的投入和退出提供判断依据,保障配电网的安全运行,解决了现有的配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁的技术问题。
附图说明
为了更清楚的说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。
图1为本申请实施例中提供的一种电容器组运行谐波环境监测方法的流程示意图;
图2为本申请实施例中提供的配电网电容器组运行谐波环境监测的电路连接示意图;
图3为本申请实施例中提供的一种电容器组运行谐波环境监测装置的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
实施例1
为了便于理解,请参阅图1和图2,本申请提供的一种电容器组运行谐波环境监测方法的一个实施例,包括:
步骤101、实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流。
需要说明的是,本申请实施例中,在配电网的电容器母线互感器的二次侧安装二次电压监测装置,实时监测电容器母线互感器的二次电压,在电容器电流互感器的二次侧安装二次电流监测装置,实时监测电容器电流互感器的二次电流。
步骤102、基于电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,得到校正电压。
需要说明的是,本申请实施例中,采用电磁式电压互感器的暂态过电压反算方法对监测的二次电压进行校正,得到精确表示一次系统谐波分量的校正电压,提升谐波测量和判断的准确性。
步骤103、计算校正电压和二次电流的谐波分量。
需要说明的是,在得到校正电压和二次电流后,实时计算两者的谐波分量。
步骤104、判断谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
需要说明的是,实时根据谐波分量计算结果判断谐波分量是否超出电容器运行要求,若是,则发出异常运行状态预警,否则,不进行预警,等待下一时刻的谐波分量计算结果。
在一个实施例中,在谐波分量超出电容器运行要求发出异常运行状态预警之后,可根据预警信号闭锁电容器合闸,或对已经合闸投入的电容器进行分闸,具体应该对电容器进行合闸还是分闸需根据实际的配电网运行情况进行确定。
本申请实施例提供的电容器组运行谐波环境监测方法,实时对电容器母线互感器的二次电压和电容器电流互感器的二次电流进行监测,采用电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,提升谐波测量和判断的准确性,然后实时计算校正电压和二次电流的谐波分量,当谐波分量超出允许范围时及时发出预警,及时为无功设备的投入和退出提供判断依据,保障配电网的安全运行,解决了现有的配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁的技术问题。
实施例2
为了便于理解,请参阅图2和图3,本申请中提供了一种电容器组运行谐波环境监测装置的实施例,包括:
实时监测模块,用于实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;
电压校正模块,用于基于电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,得到校正电压;
谐波计算模块,用于计算校正电压和二次电流的谐波分量;
预警模块,用于判断谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
还包括:
动作模块,用于在检测到异常运行状态预警信号时,对电容器合闸或对已经合闸投入的电容器进行分闸。
需要说明的是,本申请实施例中,在配电网的电容器母线互感器的二次侧安装二次电压监测装置,实时监测电容器母线互感器的二次电压,在电容器电流互感器的二次侧安装二次电流监测装置,实时监测电容器电流互感器的二次电流。实时监测模块实时获取二次电流监测装置监测的二次电流和二次电压监测装置监测的二次电压。电压校正模块采用电磁式电压互感器的暂态过电压反算方法对监测的二次电压进行校正,得到精确表示一次系统谐波分量的校正电压,提升谐波测量和判断的准确性。在得到校正电压和二次电流后,谐波计算模块实时计算两者的谐波分量。预警模块实时根据谐波分量计算结果判断谐波分量是否超出电容器运行要求,若是,则发出异常运行状态预警,否则,不进行预警,等待下一时刻的谐波分量计算结果。
动作模块在谐波分量超出电容器运行要求发出异常运行状态预警之后,可根据预警信号闭锁电容器合闸,或对已经合闸投入的电容器进行分闸,具体应该对电容器进行合闸还是分闸需根据实际的配电网运行情况进行确定。
本申请实施例提供的电容器组运行谐波环境监测装置,实时对电容器母线互感器的二次电压和电容器电流互感器的二次电流进行监测,采用电磁式电压互感器的暂态过电压反算方法对二次电压进行校正,提升谐波测量和判断的准确性,然后实时计算校正电压和二次电流的谐波分量,当谐波分量超出允许范围时及时发出预警,及时为无功设备的投入和退出提供判断依据,保障配电网的安全运行,解决了现有的配电网电容器组的运行状态监测并未引入谐波监测,当谐波分量超出允许范围时,难以及时退出无功补偿,导致设备继续在异常条件下运行直至设备损坏和断路器跳闸,对配电网的安全运行造成威胁的技术问题。
实施例3
本申请中提供了一种电容器组运行谐波环境监测设备的实施例,该设备包括处理器以及存储器:
存储器用于存储程序代码,并将程序代码传输给处理器;
处理器用于根据所述程序代码中的指令执行实施例1中的电容器组运行谐波环境监测方法
以上所述,以上实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (5)

1.一种电容器组运行谐波环境监测方法,其特征在于,包括:
实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;
基于电磁式电压互感器的暂态过电压反算方法对所述二次电压进行校正,得到校正电压;
计算所述校正电压和所述二次电流的谐波分量;
判断所述谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
2.根据权利要求1所述的电容器组运行谐波环境监测方法,其特征在于,还包括:
在检测到异常运行状态预警信号时,对电容器合闸或对已经合闸投入的电容器进行分闸。
3.一种电容器组运行谐波环境监测装置,其特征在于,包括:
实时监测模块,用于实时获取配电网电容器母线互感器的二次电压和电容器电流互感器的二次电流;
电压校正模块,用于基于电磁式电压互感器的暂态过电压反算方法对所述二次电压进行校正,得到校正电压;
谐波计算模块,用于计算所述校正电压和所述二次电流的谐波分量;
预警模块,用于判断所述谐波分量是否超出电容器运行要求,若是,发出异常运行状态预警。
4.根据权利要求3所述的电容器组运行谐波环境监测装置,其特征在于,还包括:
动作模块,用于在检测到异常运行状态预警信号时,对电容器合闸或对已经合闸投入的电容器进行分闸。
5.一种电容器组运行谐波环境监测设备,其特征在于,所述设备包括处理器以及存储器:
所述存储器用于存储程序代码,并将所述程序代码传输给所述处理器;
所述处理器用于根据所述程序代码中的指令执行权利要求1-2任一项所述的电容器组运行谐波环境监测方法。
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