CN109193536A - The intensive high-power reactive compensation system of DC de-icing device - Google Patents

The intensive high-power reactive compensation system of DC de-icing device Download PDF

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Publication number
CN109193536A
CN109193536A CN201811108635.8A CN201811108635A CN109193536A CN 109193536 A CN109193536 A CN 109193536A CN 201811108635 A CN201811108635 A CN 201811108635A CN 109193536 A CN109193536 A CN 109193536A
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CN
China
Prior art keywords
cabinet
power
air
reactive compensation
icing
Prior art date
Application number
CN201811108635.8A
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Chinese (zh)
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CN109193536B (en
Inventor
陆佳政
毛新果
李波
谭艳军
朱思国
黄清军
朱远
Original Assignee
国网湖南省电力有限公司
国网湖南省电力有限公司防灾减灾中心
国家电网有限公司
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Priority to CN201811108635.8A priority Critical patent/CN109193536B/en
Publication of CN109193536A publication Critical patent/CN109193536A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets
    • 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
    • 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

Abstract

The invention discloses a kind of high-power reactive compensation systems of intensive DC de-icing device, it includes incoming line cabinet, starting cabinet, power cabinet, control cabinet, cooling air conditioning group and circulation air path;Incoming line cabinet, starting cabinet and power cabinet are arranged successively according to electrical connection sequence, control cabinet is located at distant place master control room, it is realized and is communicated by optical fiber connection between control cabinet and power cabinet, cooling air conditioning group is circumscribed with circulation air path, heat dissipation wind channel is set in power cabinet, cabinet wall is equipped with air outlet and air inlet, air outlet, air inlet is connected to heat dissipation wind channel, the cold air that cooling air conditioning group generates is delivered to air inlet by circulation air path and enters heat dissipation wind channel to power cabinet heat radiation, it is imported in circulation air path after the completion of work from air outlet and is back to cooling air conditioning group, form closed heat dissipation circulation canal.Guarantee insulation effect, realize close-packed arrays, reduces occupied area;Air-cooled radiating mode is used simultaneously, and good reliability is suitable for water-deficient area, applied widely.

Description

The intensive high-power reactive compensation system of DC de-icing device
Technical field
The invention belongs to electrical engineering technical field more particularly to a kind of high-power idle benefits of intensive DC de-icing device Repay system.
Background technique
DC ice melting is that power grid resists the most direct effective means of freezing rain and snow disaster, in winter icing phase powerful guarantee The safe and stable operation of bulk power grid.But the DC de-icing device universal functionality structure of early stage is single, only has the function of ice-melt simultaneously only It is used when transmission line icing in winter, causes utilization ratio of device extremely low, be chronically at idle state.Intensive DC de-icing device is Dynamic no-power compensation function is had both on the basis of DC ice melting, therefore device can carry out dynamic nothing to power grid in the non-icing phase Function compensation, greatly improves utilization ratio of device.
But reactive compensation modular construction is complicated, and it is big to form cabinet body volume in existing structure substantially, takes up a large area;Device is numerous Miscellaneous, to meet insulating requirements, arrangement is loose, lacks modular unit design, and space waste is serious;Also result in the inspection of later period O&M It repairs at high cost.Furthermore it generallys use water-cooling pattern when installed capacity is larger to radiate, which reliability is low, and in water shortage Anhydrous area is often difficult to carry out.The above disadvantage constrains the popularization and application of intensive DC de-icing device.Therefore urgent It needs to design one kind simply for intensive DC de-icing device, compact, occupied area is small, and O&M maintenance is convenient, can using height By the high-power reactive compensation modular construction of property wind-cooling heat dissipating.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, the intensive style for providing a kind of closed wind-cooling heat dissipating is straight The high-power reactive compensation system of deicing device is flowed, to guarantee insulation effect, so as to close-packed arrays, realizes compact-sized, drop Low occupied area.
The high-power reactive compensation system of this intensive DC de-icing device provided by the invention, it includes incoming line cabinet, opens Dynamic cabinet, power cabinet, control cabinet, cooling air conditioning group and circulation air path;Incoming line cabinet, starting cabinet and power cabinet are suitable according to being electrically connected Sequence is arranged successively, and control cabinet is located at distant place master control room, is realized and is communicated by optical fiber connection between control cabinet and power cabinet, cooling empty It adjusts unit to be circumscribed with circulation air path, heat dissipation wind channel is set in power cabinet, cabinet wall is equipped with air outlet and air inlet, air outlet, air inlet Mouth is connected to heat dissipation wind channel, and the cold air that cooling air conditioning group generates is delivered to air inlet by circulation air path and enters heat dissipation wind channel It to power cabinet heat radiation, is imported in circulation air path after the completion of work from air outlet and is back to cooling air conditioning group, form closed dissipate Thermal cycle channel.
In a specific embodiment, trolley type breaker, isolation switch, ground connection are internally provided in the incoming line cabinet The input terminal of disconnecting link and measurement protection system, incoming line cabinet is connected with starting cabinet, and output end is connected by cable with AC network, is surveyed Amount protection system avoids grid disturbance and damage dress for controlling the tripping in system jam of trolley type breaker It sets.
Preferably, the measurement protection system is made to include voltage transformer, current transformer and protection circuit, protection electricity Road connect with voltage transformer and protects to voltage transformer, and protection circuit is connect and to Current Mutual Inductance with current transformer Device is protected, and for voltage transformer for measuring mains voltage signal and uploading control cabinet, current transformer is used for measuring device Output current signal simultaneously uploads control cabinet, and it is disconnected to control the trolley type according to the voltage measurement signal of upload and current measurement signal Road device is cut-off.
It is set in the starting cabinet for realizing the circuit of soft start when reactive compensation system initial power-on, which includes solid Fixed pattern breaker and current-limiting resistance, fixed breaker are parallel to current-limiting resistance both ends, when initial power-on, at fixed breaker In quartile, AC network charges to the storage capacitor in power module through current-limiting resistance, after charging complete, controls fixed Breaker closes, and soft start is completed.
Set upper, middle and lower-ranking laminate in the power cabinet, corresponding A, B, C three-phase are equipped with for installing function on each laminate The guide rail of rate module, each phase are equipped with a redundant module;Each power module includes a complete H-bridge inverter circuit, It is equipped with by-pass switch outside each power module, makes any one phase in the case where a not more than module failure, machinery can be passed through Bypass structure cuts off malfunctioning module, guarantees that device continues reactive compensation.
Each power module is arranged using zigzag connection in the power cabinet, is used between each power cabinet internal power module Star-like connection or triangle connect, and same layer power module is connected using copper bar between adjacent power cabinet.
The power cabinet has multiple, and the air inlet of each power cabinet is respectively positioned on the bottom of cabinet body, and air outlet is respectively positioned on cabinet body Top, the heat dissipation wind channel in each power cabinet access circulation air path by air inlet and blowing mouth parallel connection.
The incoming line cabinet, starting cabinet, power cabinet, control cabinet cabinet door on be equipped with latching logic.
The present invention sets heat dissipation wind channel in the external circulation air path of cooling air conditioning group, power cabinet, and cabinet wall is equipped with air outlet And air inlet, air outlet, air inlet are connected to heat dissipation wind channel, the cold air that cooling air conditioning group generates is delivered to by circulation air path Air inlet enters heat dissipation wind channel to power cabinet heat radiation, imports in circulation air path after the completion of work from air outlet and is back to cooling sky Adjust unit, form closed heat dissipation circulation canal, be able to guarantee insulation effect, so as to close-packed arrays, realize it is compact-sized, Reduce occupied area;The present invention uses air-cooled radiating mode simultaneously, and reliability is preferable, can be suitable for water shortage and lack water area, It is applied widely.
Detailed description of the invention
Fig. 1 is the arrangement schematic diagram of a preferred embodiment of the invention.
Fig. 2 is the functional block diagram of each component in incoming line cabinet in this preferred embodiment.
Fig. 3 is the functional block diagram for starting each component in cabinet in this preferred embodiment.
Fig. 4 is the schematic cross-sectional view of power cabinet in this preferred embodiment.
Illustrate serial number:
1-incoming line cabinet;
2-starting cabinets;
3-power cabinets, 31-air inlets, 32-air outlets, 33-laminates, 34-guide rails, 35-power modules;
4-control cabinets;
5-cooling air conditioning groups;
6-circulation air paths;
7-latching logics.
Specific embodiment
The present embodiment is used for rated capacity 100MVar, when the transformer of voltage rating 20kV, by mode cloth as shown in Figure 1 It sets, including two incoming line cabinets 1, two 2,22, starting cabinet control cabinets 4 of power cabinet 3,1, a cooling air conditioning group 5 and circulation Air duct 6.Wherein incoming line cabinet, starting cabinet and the two rows of arrangements of power cabinet point, are arranged by electrical connection sequence, are arranged side by side on site, Control cabinet is set to distant place master control room, is communicated by optical fiber with other cabinet bodies.Control cabinet can be to reactive compensation permanent idle It is switched between mode and constant power factor both of which, while the various electric information amounts in reactive compensation component are in control cabinet Carry out remittance control.For incoming line cabinet output end by cable connection to transformer secondary, transformer is three-winding transformer, transformer primary side It respectively corresponds and is connected with AC network three-phase.Incoming line cabinet input terminal is connected with adjacent starting cabinet output end.Start cabinet input terminal with Adjacent power cabinet output end is connected.Star-like connection or triangle connection can be used between power cabinet internal power module.
As shown in Fig. 2, incoming line cabinet 1 is internally provided with trolley type breaker, grounding switch and measurement protection system, trolley type The connection of breaker one end is used to be connected with AC network with cabinet body output end, and one end is connected to cabinet body input terminal and starting cabinet phase Even.Grounding switch is set to breaker output end by starting cabinet side, in turnaround of unit, it is ensured that device reliable ground.It surveys Amount protection system input is connected with each sensor loop, and output end connects breaker control circuit, by acquiring interior of the cabinet The signals such as voltage, electric current, timely tripping circuit breaker realizes the protection to device in case of a failure.Measure protection system Including voltage transformer, current transformer and protection circuit, protection circuit is connect with voltage transformer and current transformer respectively, For voltage transformer for measuring incoming line cabinet output end mains voltage signal and uploading control cabinet, current transformer is used for measuring device Output current signal simultaneously uploads control cabinet, controls trolley type breaker according to the voltage measurement signal of upload and current measurement signal It cut-offfing, trolley type breaker closes control reactive compensation component investment or out of service, when reactive compensation component is out of service, Trolley type breaker should be extracted out.The input terminal of incoming line cabinet is connected with starting cabinet, and output end is connected by cable with AC network, Measurement protection system avoids grid disturbance and damage dress for controlling the tripping in system jam of trolley type breaker It sets.
As shown in figure 3, setting in starting cabinet 2 for realizing the circuit of soft start when reactive compensation system initial power-on, this time Road includes fixed breaker and current-limiting resistance, and fixed breaker is parallel to current-limiting resistance both ends, fixed when initial power-on Breaker is in quartile, and AC network charges to the storage capacitor in power module through current-limiting resistance, after charging complete, control Fixed breaker processed closes, and soft start is completed.
As shown in figure 4, the cabinet body of power cabinet 3 is square type cabinet body, bottom cabinet wall is equipped with air inlet 31, on the cabinet wall of top Equipped with air outlet 32, air inlet is connected to air outlet, and cabinet body inner cavity is a closed heat dissipation channel, and each power cabinet passes through Air inlet and air outlet parallel connection access circulation air path, closed cycle cooling system are connected and composed with cooling air conditioning group, in realization Portion's power module unit secure heat dissipation, while interior of the cabinet is avoided because of decline of insulating caused by filth, O&M is convenient.Function simultaneously Set upper, middle and lower-ranking laminate 33 in rate cabinet, corresponding A, B, C three-phase are equipped with the guide rail for installation power module on each laminate 34, guide rail 34 using using glass steel material, have meet requirement of mechanical strength while, and can satisfy insulating requirements, often It is all provided on a guide rail there are two power module 35, power module can be slided along guide rail.Each phase is equipped with a redundant module; Each power module includes a complete H-bridge inverter circuit, is equipped with by-pass switch outside each power module, any one phase is made to exist In the case where a not more than module failure, malfunctioning module can be cut off by by-pass switch, it is idle to guarantee that device continues Compensation.Power cabinet has multiple, and the air inlet of each power cabinet is respectively positioned on the bottom of cabinet body, and air outlet is respectively positioned on the top of cabinet body, often Heat dissipation wind channel in a power cabinet accesses circulation air path by air inlet and blowing mouth parallel connection;Each power cabinet internal power module it Between connected using star-like connection or triangle, same layer power module is using copper bar connection between adjacent power cabinet.
Latching logic 7 is equipped in the cabinet door of each cabinet body, latching logic 7 includes limitation travel switch and anti-misoperation electricity Magnetic padlock, in device operational process, electromagnetic lock will be in attracting state always, and all cabinet doors are fail to open.Any cabinet door simultaneously When correct closing, travel switch internal relay node is in an off state, and all travel switch internal relay nodes are equal It concatenates into incoming line cabinet closing circuit of circuit breaker, therefore when any cabinet door is not closed correctly, incoming line cabinet inner breaker cannot achieve conjunction Lock prevents from leading to accident of human electric shock because of maloperation, has ensured personal safety.
The present invention is heat dissipation wind channel in the external circulation air path of cooling air conditioning group, the inner cavity of power cabinet, and cabinet wall is equipped with Air port and air inlet, air outlet, air inlet are connected to heat dissipation wind channel, and the cold air that cooling air conditioning group generates is defeated by circulation air path It send to air inlet and enters heat dissipation wind channel to power cabinet heat radiation, be back to after the completion of work from air outlet remittance circulation air path cold But air-conditioner set forms closed heat dissipation circulation canal, is able to guarantee insulation effect, it is ensured that interior of the cabinet do not influenced by filth and It causes insulation to decline, so as to close-packed arrays, realizes compact-sized, reduction occupied area;The present invention is using air-cooled simultaneously Radiating mode, reliability is preferable, can be suitable for water shortage and lack water area, applied widely.On power module by each phase By-pass switch quickly malfunctioning module can be cut off, guarantee that device continues reactive compensation, greatly improve device Functional reliability.It is achieved by measurement protection system and issues trip command in time in reactive compensation component malfunction, Avoid grid disturbance and damage device.

Claims (8)

1. a kind of high-power reactive compensation system of intensive style DC de-icing device, it is characterised in that: it includes incoming line cabinet, starting Cabinet, power cabinet, control cabinet, cooling air conditioning group and circulation air path;Incoming line cabinet, starting cabinet and power cabinet are according to electrical connection sequence It being arranged successively, control cabinet is located at distant place master control room, and it is realized and is communicated by optical fiber connection between control cabinet and power cabinet, cooling air-conditioning Unit is circumscribed with circulation air path, and heat dissipation wind channel is set in power cabinet, and cabinet wall is equipped with air outlet and air inlet, air outlet, air inlet It is connected to heat dissipation wind channel, the cold air that cooling air conditioning group generates is delivered to air inlet by circulation air path and enters heat dissipation wind channel pair Power cabinet heat radiation imports in circulation air path from air outlet after the completion of work and is back to cooling air conditioning group, forms closed heat dissipation Circulation canal.
2. the high-power reactive compensation system of intensive style DC de-icing device as described in claim 1, it is characterised in that: it is described into Line cabinet is internally provided with trolley type breaker, grounding switch and measurement protection system, and trolley type breaker one end is connected to cabinet body For being connected with AC network, one end is connected to cabinet body input terminal and is connected with starting cabinet output end;Grounding switch is set to open circuit Device output end is by starting cabinet side, in turnaround of unit, it is ensured that device reliable ground;Measurement protection system input and sensing Device circuit be connected, output end connect breaker control circuit, by acquisition the signals such as interior of the cabinet voltage signal and electric current and on Control cabinet is reached, timely tripping circuit breaker realizes the protection to device in case of a failure;The input terminal of incoming line cabinet with Start cabinet to be connected, output end is connected by cable with AC network, and measurement protection system is being for controlling trolley type breaker Tripping when system breaks down avoids grid disturbance and damage device.
3. the high-power reactive compensation system of intensive style DC de-icing device as claimed in claim 2, it is characterised in that: the survey Amount protection system include voltage transformer, current transformer and protection circuit, protection circuit respectively with voltage transformer and electric current Device is protected in mutual inductor connection, and voltage transformer is for measuring mains voltage signal and uploading control cabinet, Current Mutual Inductance Device is for measuring device output current signal and uploads control cabinet, according to the voltage measurement signal of upload and current measurement signal control The trolley type breaker is made to cut-off.
4. the high-power reactive compensation system of intensive style DC de-icing device as described in claim 1, it is characterised in that: described to open It sets in dynamic cabinet for realizing the circuit of soft start when reactive compensation system initial power-on, which includes fixed breaker and limit Leakage resistance, fixed breaker are parallel to current-limiting resistance both ends, and when initial power-on, fixed breaker is in quartile, alternating current Net charges to the storage capacitor in power module through current-limiting resistance, and after charging complete, control fixed breaker is closed, soft Start completion.
5. the high-power reactive compensation system of intensive style DC de-icing device as described in claim 1, it is characterised in that: the function Setting upper, middle and lower-ranking laminate in rate cabinet, corresponding A, B, C three-phase are equipped with the guide rail for installation power module on each laminate, Each phase is equipped with a redundant module;Each power module includes a complete H-bridge inverter circuit, equal outside each power module Equipped with by-pass switch, make any one phase in the case where a not more than module failure, it can be by mechanical by-pass structure by failure Module excision, guarantees that device continues reactive compensation.
6. the high-power reactive compensation system of intensive style DC de-icing device as claimed in claim 5, it is characterised in that: the function Each power module is arranged using zigzag connection in rate cabinet, and star-like connection or triangle are used between each power cabinet internal power module Shape connects, and same layer power module is connected using copper bar between adjacent power cabinet.
7. the high-power reactive compensation system of intensive style DC de-icing device as described in claim 1, it is characterised in that: the function Rate cabinet has multiple, and the air inlet of each power cabinet is respectively positioned on the bottom of cabinet body, and air outlet is respectively positioned on the top of cabinet body, each power cabinet Interior heat dissipation wind channel accesses circulation air path by air inlet and blowing mouth parallel connection.
8. the high-power reactive compensation system of intensive style DC de-icing device as described in claim 1, it is characterised in that: it is described into Line cabinet, starting cabinet, power cabinet, control cabinet cabinet door on be equipped with latching logic.
CN201811108635.8A 2018-09-21 2018-09-21 High-power reactive power compensation system of intensive direct-current ice melting device Active CN109193536B (en)

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Application Number Priority Date Filing Date Title
CN201811108635.8A CN109193536B (en) 2018-09-21 2018-09-21 High-power reactive power compensation system of intensive direct-current ice melting device

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Application Number Priority Date Filing Date Title
CN201811108635.8A CN109193536B (en) 2018-09-21 2018-09-21 High-power reactive power compensation system of intensive direct-current ice melting device

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CN109193536A true CN109193536A (en) 2019-01-11
CN109193536B CN109193536B (en) 2019-12-06

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2505903C1 (en) * 2012-06-14 2014-01-27 Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс") Intergrated apparatus for compensation of reactive power and melting ice cover (version)
CN105514905A (en) * 2015-12-28 2016-04-20 中电普瑞科技有限公司 Movable ice melting device with STATCOM function
CN205453049U (en) * 2015-12-28 2016-08-10 中电普瑞科技有限公司 Portable ice -melt device with static synchronous compensation function
CN207039145U (en) * 2017-08-16 2018-02-23 国网湖南省电力公司 Intensive DC de-icing device with cogeneration function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2505903C1 (en) * 2012-06-14 2014-01-27 Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс") Intergrated apparatus for compensation of reactive power and melting ice cover (version)
CN105514905A (en) * 2015-12-28 2016-04-20 中电普瑞科技有限公司 Movable ice melting device with STATCOM function
CN205453049U (en) * 2015-12-28 2016-08-10 中电普瑞科技有限公司 Portable ice -melt device with static synchronous compensation function
CN207039145U (en) * 2017-08-16 2018-02-23 国网湖南省电力公司 Intensive DC de-icing device with cogeneration function

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