CN204696691U - A kind of modular harmonic wave control and reactive power compensator - Google Patents

A kind of modular harmonic wave control and reactive power compensator Download PDF

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Publication number
CN204696691U
CN204696691U CN201520471653.8U CN201520471653U CN204696691U CN 204696691 U CN204696691 U CN 204696691U CN 201520471653 U CN201520471653 U CN 201520471653U CN 204696691 U CN204696691 U CN 204696691U
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China
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module group
apf
intelligent capacitor
active power
power filter
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CN201520471653.8U
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Inventor
黄海宇
李帮家
魏平
王国安
王莉
马庆华
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HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO LTD
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HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO LTD
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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
    • 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
    • Y02E40/20Active power filtering [APF]

Abstract

A kind of modular harmonic wave control of the utility model and reactive power compensator include sample instrument transformer TA1, load current of active power filter module group and Intelligent capacitor module group, power network current and to sample instrument transformer TA2 and human-computer interaction module; The two ends of described Intelligent capacitor module group and described Active Power Filter-APF module group are parallel with one another, wherein one end access electrical network, and the other end is connected by 485 communication buss; Described power network current sampling instrument transformer TA1 and load current sampling instrument transformer TA2 receives described Intelligent capacitor module group and Active Power Filter-APF module group by series system; Intelligent capacitor module group described in described human-computer interaction module is connected by 485 communication buss and Active Power Filter-APF module group, provide a kind of while compensating reactive power, effectively can administer harmonic problem again, effectively can also improve the quality of power supply, reach energy-saving and emission-reduction object, final modular harmonic wave control and the reactive power compensator effectively reducing energy loss.

Description

A kind of modular harmonic wave control and reactive power compensator
Technical field
The utility model relates to a kind of modular harmonic wave control and reactive power compensator.
Background technology
In electric power system, cause power loss for reducing power distribution network to provide a large amount of reactive current and compensation harmonic to load, the reactive power compensation and the harmonic treating apparatus that configure relevant voltage grade is all needed in each isoelectric point (as low-tension transformer and large-scale electric equipment installation place), the industrial and mineral that power factor is lower, enterprise, reactive power compensator must be installed in residential block, large-size asynchronous motor, transformer, electric welding machine, the equipment such as forcing press also usually need to install reactive power compensator, to improve transmitting capacity of the electric wire netting and utilization rate of electrical, improve electricity consumption situation, energy savings.
The reactive power compensation that each producer current adopts and the main thyristor switchable capacitor of harmonic wave control (TSC), Active Power Filter-APF (APF) module etc.TSC controls by thyristor switch the principle that multiple capacitor realizes reactive power compensation by a controller, and whole device volume is excessive, and installation and maintenance is inconvenient, and when controller breaks down, whole device just cannot compensating reactive power;
TSC dilatation is inconvenient, is not well positioned to meet actual needs; Reliability control system is low, and to manufacturing and designing, the technical requirement of operational management is higher is also the large shortcoming of one.
Independent Active Power Filter-APF (APF) module can only administer harmonic wave, can not compensating reactive power, and in our electric power system, not only have harmonic current to exist, and idle also exist constantly in electrical network.
When capacitance compensation is installed separately in electrical network, the propagation of harmonic wave in electrical network can be affected during switching capacitance, even can cause amplification and the resonance of harmonic wave, when mains by harmonics is large, there will be electric capacity blast, cause a series of accident, jeopardize personal safety.
Learnt by internet retrieval, combination unit about TSC and Active Power Filter-APF module (APF) exists, but its principle that realizes is simply be assembled in a cabinet by TSC and APF machinery, TSC and active filter filter work alone, and the shortcoming of above-mentioned TSC still exists, installation and maintenance is inconvenient, and operational reliability is low.
Utility model content
The open object of the utility model is the limitation solving above-mentioned existing reactive power compensator, there is provided a kind of while compensating reactive power, effectively can administer harmonic problem again, effectively can also improve the quality of power supply, reach energy-saving and emission-reduction object, final modular harmonic wave control and the reactive power compensator effectively reducing energy loss.
The utility model includes sample instrument transformer TA1, load current of active power filter module group and Intelligent capacitor module group, power network current and to sample instrument transformer TA2 and human-computer interaction module; The two ends of described Intelligent capacitor module group and described Active Power Filter-APF module group are parallel with one another, wherein one end access electrical network, and the other end is connected by 485 communication buss; Described power network current sampling instrument transformer TA1 and load current sampling instrument transformer TA2 receives described Intelligent capacitor module group and Active Power Filter-APF module group by series system; Intelligent capacitor module group described in described human-computer interaction module is connected by 485 communication buss and Active Power Filter-APF module group.
After adopting above structure, the utility model compared with prior art, has the following advantages:
The utility model relates to a kind of modular harmonic wave control and reactive power compensator, adopt the mode that Active Power Filter-APF module group and Intelligent capacitor module group combine, the harmonic current of load-side is first through Active Power Filter-APF module group filtering harmonics, then reactive power compensation is carried out again by Intelligent capacitor module group, avoid the amplification to mains by harmonics when reactive power compensation, improve the quality of electrical network electric energy.The utility model structure is simple, easy to operate, automaticity is higher, adopt modularized design, improve user's stability to greatest extent, modular product realizes components and parts formula theory, design liaison is convenient, can with multiple cabinet with the use of, modularized product development allow safeguard more convenient.
According to capacity configuration combination flexibly, easy for installation, dilatation is convenient for a kind of modular harmonic wave control and reactive power compensator, is convenient to safeguard; The defencive function of a kind of modular harmonic wave control and reactive power compensator is complete, possesses a series of protections such as overvoltage/undervoltage, overcurrent, excess temperature.The utility model provides a kind of while compensating reactive power, effectively can administer harmonic problem again, effectively can also improve the quality of power supply, reaches energy-saving and emission-reduction object, final modular harmonic wave control and the reactive power compensator effectively reducing energy loss.
As improvement, described Intelligent capacitor module group comprises at least two Intelligent capacitor modules, parallel with one another between described Intelligent capacitor module.Described Intelligent capacitor module group can by electric capacity switching as required, and the capacitor that capacity is identical adopts switching cycle principle, avoid on same repeatedly switching affect its life-span;
As improvement, described Active Power Filter-APF module group comprises at least two Active Power Filter-APF modules, parallel with one another between described Active Power Filter-APF module.Active Power Filter-APF module group can comprise the module of different capabilities, meets the demand of different capabilities.
A kind of modular harmonic wave control and reactive power compensator are by the unified intelligent communication network of 485 interface composition, device each module when start powers on does not have master-slave, need, by automatically identifying that principal and subordinate distinguished by competition main frame, to guarantee in network, to only have a main frame.Gather all the other information from machine by main frame, form the information list of intelligent communication, finally require the no-power compensation function of accurate net control according to Reactive Power Dispatch.No matter any module breaks down, all can be automatically out of service, and residue module forms new network and normally runs.Modular product can also meet various capacity requirement; According to capacity configuration combination flexibly, easy for installation, dilatation is convenient for a kind of modular harmonic wave control and reactive power compensator, is convenient to safeguard; The defencive function of a kind of modular harmonic wave control and reactive power compensator is complete, possesses a series of protections such as overvoltage/undervoltage, overcurrent, excess temperature.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model includes sample instrument transformer TA1, load current of active power filter module group and Intelligent capacitor module group, power network current and to sample instrument transformer TA2 and human-computer interaction module as shown in Figure 1; The two ends of described Intelligent capacitor module group and described Active Power Filter-APF module group are parallel with one another, wherein one end access electrical network, and the other end is connected by 485 communication buss; Described power network current sampling instrument transformer TA1 and load current sampling instrument transformer TA2 receives described Intelligent capacitor module group and Active Power Filter-APF module group by series system; Intelligent capacitor module group described in described human-computer interaction module is connected by 485 communication buss and Active Power Filter-APF module group.Described Intelligent capacitor module group comprises at least two Intelligent capacitor modules, parallel with one another between described Intelligent capacitor module.Described Active Power Filter-APF module group comprises at least two Active Power Filter-APF modules, parallel with one another between described Active Power Filter-APF module.
Wherein, described human-computer interaction module be with a set of take embedded type CPU as the high-performance integrated touch screen controller of core, can realize arranging equipment operational factor, reading and writing function, and in real time and backstage carry out communication.Data, oscillogram before and after real-time display power information, compensation, control and monitor APF and Intelligent capacitor module work state, realizing the integrated mode of different capabilities APF and Intelligent capacitor module flexibly; Also can run duration to each group capacitor running time, each group capacitor switching frequency, equipment in addition, historical operation, history warning, APF run switching situation and carry out record; Human-computer interaction module can provide multiple protection functions, compensation model set-up function, remote communicating function.
Described Active Power Filter-APF module group processes the harmonic wave in system, and the harmonic wave flowing into capacitor is little; Active Power Filter-APF module group adopts modularized design structure, and parallel operation is according to demand easy to assembly; Active Power Filter-APF module group can be passed through sampling load current and carry out each harmonic to be separated with idle, control and the size of active output current, frequency and phase place, and respond fast, offset phase induced current in load, achieve dynamic tracing compensation harmonic wave; Active Power Filter-APF module group has 25-100A five kinds of capacity modules, and random capacity combination parallel operation, meets different capabilities demand, operational blocks which partition system can realize all functions, a certain module goes wrong, and all the other modules can normally be run, with the continuity of safeguards system safe operation.
Described Intelligent capacitor module group in a modular fashion, adopts advanced microelectronics software and hardware technology, DSP measurement and control unit and the perfect adaptation of three-phase synchronous switch is got up, and realizes the input such as voltage such as grade to low voltage power capacitor, current over-zero excision.Intelligent capacitor module group is made up of multiple Intelligent capacitor module, includes three-phase and compensates intelligent capacitor and phase splitting compensation intelligent capacitor.
Described Active Power Filter-APF module group and Intelligent capacitor module group adopt in parallel configurations access electrical network, and power network current sampling instrument transformer TA1 connects man-machine interface, to the effect of grid side reactive power compensation and harmonic wave control before and after checkout gear normally works.Described load current sampling instrument transformer TA2 receives Intelligent capacitor module group and Active Power Filter-APF module group by series system, judges the size of reactive current, controls the output of Active Power Filter-APF module and Intelligent capacitor module.
The utility model utilizes that Intelligent capacitor module for compensating provides reactive power, Active Power Filter-APF module is carried out harmonic wave control and had plurality of advantages, as can not with system generation resonance; Ensure that system power factor reaches more than 0.99, harmonic wave control is effective; Can quick corresponding tracking load variations; Product high life, failure rate is low, later maintenance cost are low.
A kind of modular harmonic wave control of the utility model and reactive power compensator adopt intelligent communication, and Active Power Filter-APF module group and Intelligent capacitor module group composition consolidated network, collaborative work, a certain module damage is influential system function not, increases work efficiency.
The advantage of the abundant combined with intelligent capacitor module of the utility model and Active Power Filter-APF module, provides the best price/performance ratio reactive power compensation and harmonic wave control solution, fully meets consumers' demand.
Below only just most preferred embodiment of the present utility model is described, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and all various changes done in the protection range of the utility model independent claims are all in protection range of the present utility model.

Claims (3)

1. modular harmonic wave control and a reactive power compensator, is characterized in that: include sample instrument transformer TA1, load current of active power filter module group and Intelligent capacitor module group, power network current and to sample instrument transformer TA2 and human-computer interaction module; The two ends of described Intelligent capacitor module group and described Active Power Filter-APF module group are parallel with one another, wherein one end access electrical network, and the other end is connected by 485 communication buss; Described power network current sampling instrument transformer TA1 and load current sampling instrument transformer TA2 receives described Intelligent capacitor module group and Active Power Filter-APF module group by series system; Intelligent capacitor module group described in described human-computer interaction module is connected by 485 communication buss and Active Power Filter-APF module group.
2. the modular harmonic wave control of one according to claim 1 and reactive power compensator, is characterized in that: described Intelligent capacitor module group comprises at least two Intelligent capacitor modules, parallel with one another between described Intelligent capacitor module.
3. the modular harmonic wave control of one according to claim 1 and reactive power compensator, it is characterized in that: described Active Power Filter-APF module group comprises at least two Active Power Filter-APF modules, parallel with one another between described Active Power Filter-APF module.
CN201520471653.8U 2015-07-03 2015-07-03 A kind of modular harmonic wave control and reactive power compensator Active CN204696691U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281343A (en) * 2015-11-05 2016-01-27 上海追日电气有限公司 Modular series-parallel filter compensation system and method
CN111668842A (en) * 2020-06-28 2020-09-15 上海兆铄科技有限公司 Active power filter based on power line carrier communication
EP3637601A4 (en) * 2017-07-18 2021-01-13 Daikin Industries, Ltd. Active filter system and air conditioning device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281343A (en) * 2015-11-05 2016-01-27 上海追日电气有限公司 Modular series-parallel filter compensation system and method
EP3637601A4 (en) * 2017-07-18 2021-01-13 Daikin Industries, Ltd. Active filter system and air conditioning device
US11577186B2 (en) 2017-07-18 2023-02-14 Daikin Industries, Ltd. Active filter system and air conditioning device
CN111668842A (en) * 2020-06-28 2020-09-15 上海兆铄科技有限公司 Active power filter based on power line carrier communication

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C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: Yuhang District Longtan Street warehouse before 311121 Hangzhou Road, Zhejiang No. 16 Building 1 layer 1-5

Patentee after: HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO.,LTD.

Address before: Yuhang District Longtan Street warehouse before 311121 Hangzhou Road, Zhejiang No. 16 Building 1 layer 1-5

Patentee before: Hangzhou Decheng Electric Power Technology Co.,Ltd.

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Modular harmonic is administered and reactive power compensator

Effective date of registration: 20180913

Granted publication date: 20151007

Pledgee: China Everbright Bank Limited by Share Ltd. Hangzhou Yuhang sub branch

Pledgor: HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO.,LTD.

Registration number: 2018330000275

PC01 Cancellation of the registration of the contract for pledge of patent right
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Date of cancellation: 20210416

Granted publication date: 20151007

Pledgee: China Everbright Bank Limited by Share Ltd. Hangzhou Yuhang sub branch

Pledgor: HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY Co.,Ltd.

Registration number: 2018330000275

PE01 Entry into force of the registration of the contract for pledge of patent right
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Denomination of utility model: A modular harmonic treatment and reactive power compensation device

Effective date of registration: 20211203

Granted publication date: 20151007

Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd.

Pledgor: HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO.,LTD.

Registration number: Y2021980013981

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Date of cancellation: 20220322

Granted publication date: 20151007

Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd.

Pledgor: HANGZHOU DECHENG ELECTRIC POWER TECHNOLOGY CO.,LTD.

Registration number: Y2021980013981

PE01 Entry into force of the registration of the contract for pledge of patent right
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Denomination of utility model: A modular harmonic treatment and reactive power compensation device

Effective date of registration: 20220322

Granted publication date: 20151007

Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd.

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