CN107612037A - A kind of substation photovoltaic grid-connecting apparatus - Google Patents

A kind of substation photovoltaic grid-connecting apparatus Download PDF

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Publication number
CN107612037A
CN107612037A CN201711033449.8A CN201711033449A CN107612037A CN 107612037 A CN107612037 A CN 107612037A CN 201711033449 A CN201711033449 A CN 201711033449A CN 107612037 A CN107612037 A CN 107612037A
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CN
China
Prior art keywords
circuit breaker
photovoltaic
breaker
grid
bus
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
CN201711033449.8A
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Chinese (zh)
Inventor
吴远密
陈学文
刘楠
张娜
龙丽琼
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.)
Xishuangbanna Power Supply Bureau of Yunnan Power Grid Co Ltd
Original Assignee
Xishuangbanna Power Supply Bureau of Yunnan Power Grid 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 Xishuangbanna Power Supply Bureau of Yunnan Power Grid Co Ltd filed Critical Xishuangbanna Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority to CN201711033449.8A priority Critical patent/CN107612037A/en
Publication of CN107612037A publication Critical patent/CN107612037A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The present invention relates to a kind of substation photovoltaic grid-connecting apparatus, belong to field of electrical equipment.Solar panel of the present invention is connected with photovoltaic combiner box, photovoltaic combiner box and MPPT controller.MPPT controller is connected with batteries, touch-screen, circuit breaker Q F3, circuit breaker Q F4 respectively, and photovoltaic DC-to-AC converter is connected with circuit breaker Q F3, circuit breaker Q F1, and circuit breaker Q F1 is connected with standing with low pressure side ac bus.DC voltage regulator is connected with circuit breaker Q F4, circuit breaker Q F2, and circuit breaker Q F2 is connected with station power use system dc bus.Touch-screen is connected with circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 and MPPT controller respectively.The present invention can show current photovoltaic power generation system current, voltage, power and annual photovoltaic system every month the accumulative total of generating electricity;The present invention can realize solar photovoltaic generation system and station power use system AC and DC reliable grid connection in electricity grid substation simultaneously.

Description

A kind of substation photovoltaic grid-connecting apparatus
Technical field
The present invention relates to a kind of substation photovoltaic grid-connecting apparatus, belong to electrical equipment technical field.
Background technology
Grid-connected technology using more and more extensive, its using cleaning clean, reproducible natural energy resources solar power generation, Generate electricity energy feed-in power network, using power network as energy storage device.When power load is larger, solar electric power deficiency just utilizes civil power. And load it is smaller when, or when cannoing be used up electric power, so that it may convey unnecessary electric power to civil power.Power network introduces photovoltaic in transformer station Power supply can not only reduce cost, the reliability of station electricity consumption can also be improved by increasing economic efficiency, but the grid-connected dress of substation photovoltaic The function and reliability put still need to further research and development.
The content of the invention
For insufficient existing for existing substation photovoltaic grid-connecting apparatus, the invention provides a kind of grid-connected dress of substation photovoltaic Put.
The technical scheme is that:A kind of substation photovoltaic grid-connecting apparatus, including solar panel, photovoltaic conflux Case, MPPT controller (solar maximum power point tracking controller), batteries, breaker, photovoltaic DC-to-AC converter, direct current voltage reulation Device.
The solar panel is connected with photovoltaic combiner box, photovoltaic combiner box and MPPT controller (solar energy maximum work Rate point tracking controller).MPPT controller is connected with batteries, touch-screen, circuit breaker Q F3, circuit breaker Q F4 respectively, photovoltaic Inverter is connected with circuit breaker Q F3, circuit breaker Q F1, and circuit breaker Q F1 is connected with standing with low pressure side ac bus.Direct current voltage reulation Device is connected with circuit breaker Q F4, circuit breaker Q F2, and circuit breaker Q F2 is connected with station power use system dc bus.Touch-screen is respectively with breaking Road device QF1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 and MPPT controller connection, its can control manually QF1, QF2, QF3, QF4 breaker division, when failure is realized in photovoltaic system internal fault, the energy automatic trip of alternating current-direct current bus abnormal Q F1, QF2 Isolation, when solar cell panel assembly failure or circuit breaker Q F3, circuit breaker Q F4 tripping operation when Lightning disturbance ripple be present.It can show and work as Preceding photovoltaic power generation system current, voltage, power and annual photovoltaic system every month the accumulative total of generating electricity.
MPPT controller of the present invention is the controller for solar based on Boost topological structure DC/DC converters, is provided with MPPT maximum power point tracking function, provided with battery Charge Management function.
Photovoltaic DC-to-AC converter of the present invention is DC/AC converters, while can guarantee that input voltage, frequency, phase etc. meet Exchange grid-connected requirement.
DC voltage regulator of the present invention is the DC/DC converters for possessing superperformance and defencive function, be can guarantee that simultaneously Input voltage etc. meets the grid-connected requirement of direct current.
The present invention the course of work be:
Electric current caused by solar cell panel assembly flows into MPPT controller by photovoltaic combiner box, and MPPT controller will be defeated Go out a steady dc voltage.The DC voltage will divide two-way, be sent into photovoltaic DC-to-AC converter by circuit breaker Q F3 all the way, in addition DC voltage regulator is sent into by circuit breaker Q F4 all the way.Photovoltaic DC-to-AC converter is exchanged female by QF1 breakers access station with low pressure side Line, DC voltage regulator pass through QF2 breaker access station electricity consumption dc bus.Photovoltaic DC-to-AC converter automated closed-loop regulation output three-phase 380V/50Hz sinusoidal voltages with power network station with low pressure side ac bus voltage magnitude is equal, frequency is identical, phase is identical, directly Stream pressure regulator automated closed-loop regulation output ± 110V DC voltages are equal with power network station electricity consumption DC bus-bar voltage amplitude and orient Exported toward dc bus.Wherein when photovoltaic system internal fault, alternating current-direct current bus abnormal Q F1 breakers, QF2 breakers energy are automatic Tripping operation, realize Fault Isolation (such as straight-flow system insulation declines, and cuts off QF2);When solar cell panel assembly failure or thunder be present Circuit breaker Q F3, circuit breaker Q F4 tripping operations during electricity invasion ripple.Touch-screen will show respectively photovoltaic generating system, the grid-connected branch road of exchange, Electric current, voltage, the charge value of the grid-connected branch road of direct current, it can control QF1, QF2, QF3, QF4 breaker division, and it can also show Fault warning in system scope.
The beneficial effects of the invention are as follows:The invention can effectively realize Substation Station electricity system and photovoltaic generating system AC and DC reliable grid connection, and can effective judgement system internal fault and automatic protection tripping operation etc..
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the present invention.
Embodiment
Embodiment 1:As shown in figure 1, a kind of substation photovoltaic grid-connecting apparatus, including solar panel, photovoltaic combiner box, MPPT controller (solar maximum power point tracking controller), batteries, breaker, photovoltaic DC-to-AC converter, DC voltage regulator.
The solar panel is connected with photovoltaic combiner box, photovoltaic combiner box and MPPT controller (solar energy maximum work Rate point tracking controller);MPPT controller is connected with batteries, touch-screen, circuit breaker Q F3, circuit breaker Q F4 respectively, photovoltaic Inverter is connected with circuit breaker Q F3, circuit breaker Q F1 respectively;Circuit breaker Q F1 is connected with standing with low pressure side ac bus;Direct current Pressure regulator is connected with circuit breaker Q F4, circuit breaker Q F2 respectively, and circuit breaker Q F2 is connected with station power use system dc bus;Touch-screen It is connected respectively with circuit breaker Q F1, circuit breaker Q F2, circuit breaker Q F3, circuit breaker Q F4 and MPPT controller, it can be controlled manually QF1, QF2, QF3, QF4 breaker division, when photovoltaic system internal fault, the energy automatic trip of alternating current-direct current bus abnormal Q F1, QF2 Fault Isolation is realized, can show that current photovoltaic power generation system current, voltage, power and annual photovoltaic system every month are accumulative and generate electricity Amount.
Above in conjunction with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned Embodiment, can also be before present inventive concept not be departed from those of ordinary skill in the art's possessed knowledge Put that various changes can be made.

Claims (3)

  1. A kind of 1. substation photovoltaic grid-connecting apparatus, it is characterised in that:Including solar panel, photovoltaic combiner box, MPPT controls Device, batteries, breaker, photovoltaic DC-to-AC converter, DC voltage regulator;
    The solar panel is connected with photovoltaic combiner box, and photovoltaic combiner box is connected with MPPT controller;MPPT controller point It is not connected with batteries, touch-screen, circuit breaker Q F3, circuit breaker Q F4;Photovoltaic DC-to-AC converter respectively with circuit breaker Q F3, breaker QF1 connections;Circuit breaker Q F1 is connected with standing with low pressure side ac bus;DC voltage regulator respectively with circuit breaker Q F4, breaker QF2 connections, circuit breaker Q F2 are connected with station power use system dc bus;Touch-screen respectively with circuit breaker Q F1, circuit breaker Q F2, disconnected Road device QF3, circuit breaker Q F4 and MPPT controller connection;
    It can control QF1, QF2, QF3, QF4 breaker division manually, when photovoltaic system internal fault, alternating current-direct current bus are abnormal QF1, QF2 can automatic trip realize Fault Isolation, when solar cell panel assembly failure or breaker when Lightning disturbance ripple be present QF3, circuit breaker Q F4 trip;It can show that current photovoltaic power generation system current, voltage, power and annual photovoltaic system every month tire out Count generated energy.
  2. A kind of 2. substation photovoltaic grid-connecting apparatus according to claim 1, it is characterised in that:The MPPT controller is base In the controller for solar of Boost topological structure DC/DC converters, filled provided with MPPT maximum power point tracking function, provided with battery Electric management function.
  3. A kind of 3. substation photovoltaic grid-connecting apparatus according to claim 1, it is characterised in that:The photovoltaic DC-to-AC converter is DC/AC converters, while can guarantee that the satisfactions such as input voltage, frequency, phase exchange grid-connected requirement;
    The DC voltage regulator is DC/DC converters, while can guarantee that input voltage etc. meets the grid-connected requirement of direct current.
CN201711033449.8A 2017-10-30 2017-10-30 A kind of substation photovoltaic grid-connecting apparatus Pending CN107612037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711033449.8A CN107612037A (en) 2017-10-30 2017-10-30 A kind of substation photovoltaic grid-connecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711033449.8A CN107612037A (en) 2017-10-30 2017-10-30 A kind of substation photovoltaic grid-connecting apparatus

Publications (1)

Publication Number Publication Date
CN107612037A true CN107612037A (en) 2018-01-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116454980A (en) * 2023-06-15 2023-07-18 麦田能源股份有限公司 Power conversion device and maximum power point tracking control method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007274841A (en) * 2006-03-31 2007-10-18 Toshiba Corp Solar power generation system and solar power generation plant
CN102025291A (en) * 2010-12-20 2011-04-20 东南大学 Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module
CN102185531A (en) * 2011-05-16 2011-09-14 武汉纺织大学 Solar photovoltaic off-grid and grid-connected multi-mode generating system
CN102904278A (en) * 2012-09-20 2013-01-30 江苏万丰光伏有限公司 Distribution type grid connection photovoltaic system power supply
CN203895990U (en) * 2013-12-24 2014-10-22 珠海格力电器股份有限公司 Photovoltaic grid-connected system
CN105811453A (en) * 2016-03-14 2016-07-27 贵州电网有限责任公司电力科学研究院 Distributed energy intelligent access system and access method thereof
CN207518285U (en) * 2017-10-30 2018-06-19 云南电网有限责任公司西双版纳供电局 A kind of substation photovoltaic grid-connecting apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007274841A (en) * 2006-03-31 2007-10-18 Toshiba Corp Solar power generation system and solar power generation plant
CN102025291A (en) * 2010-12-20 2011-04-20 东南大学 Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module
CN102185531A (en) * 2011-05-16 2011-09-14 武汉纺织大学 Solar photovoltaic off-grid and grid-connected multi-mode generating system
CN102904278A (en) * 2012-09-20 2013-01-30 江苏万丰光伏有限公司 Distribution type grid connection photovoltaic system power supply
CN203895990U (en) * 2013-12-24 2014-10-22 珠海格力电器股份有限公司 Photovoltaic grid-connected system
CN105811453A (en) * 2016-03-14 2016-07-27 贵州电网有限责任公司电力科学研究院 Distributed energy intelligent access system and access method thereof
CN207518285U (en) * 2017-10-30 2018-06-19 云南电网有限责任公司西双版纳供电局 A kind of substation photovoltaic grid-connecting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116454980A (en) * 2023-06-15 2023-07-18 麦田能源股份有限公司 Power conversion device and maximum power point tracking control method
CN116454980B (en) * 2023-06-15 2023-09-01 麦田能源股份有限公司 Power conversion device and maximum power point tracking control method

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