CN109687579A - A kind of fairing isolated network recovery electrolytic aluminium load control system - Google Patents

A kind of fairing isolated network recovery electrolytic aluminium load control system Download PDF

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Publication number
CN109687579A
CN109687579A CN201811523277.7A CN201811523277A CN109687579A CN 109687579 A CN109687579 A CN 109687579A CN 201811523277 A CN201811523277 A CN 201811523277A CN 109687579 A CN109687579 A CN 109687579A
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CN
China
Prior art keywords
cabinet
rectifier
unit
plc controller
direct current
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Pending
Application number
CN201811523277.7A
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Chinese (zh)
Inventor
刘善玲
周博遥
刘慧林
范文超
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Jiujiang Saijing Technology Co Ltd
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Jiujiang Saijing Technology Co Ltd
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Publication date
Application filed by Jiujiang Saijing Technology Co Ltd filed Critical Jiujiang Saijing Technology Co Ltd
Priority to CN201811523277.7A priority Critical patent/CN109687579A/en
Publication of CN109687579A publication Critical patent/CN109687579A/en
Pending legal-status Critical Current

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    • 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
    • H02J13/00—Circuit 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
    • H02J13/00006—Circuit 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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00019—Circuit 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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
    • 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
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • 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
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

A kind of fairing isolated network recovery electrolytic aluminium load control system, including PLC controller, the output unit of the PLC controller respectively with rectifier cabinet, high-tension switch cabinet, on-load voltage regulating switch, rectifier transformer, transformer oil is air-cooled, technique DCS, rectifier cabinet, control cabinet, pure water cooling unit, direct current disconnecting link is connected by the way of ControlNet double-network redundant with the input unit of direct current transducer, rectifier cabinet, high-tension switch cabinet, on-load voltage regulating switch, rectifier transformer, transformer oil is air-cooled, technique DCS, rectifier cabinet, control cabinet, pure water cooling unit, the output unit of direct current disconnecting link and direct current transducer is connect by the way of ControlNet double-network redundant with the input unit of PLC controller；The PLC controller is also connect with PC control unit, touch screen control unit, DCS control unit by too net communication modes respectively.Ensure control net exchange data not by the interference of background monitoring data.

Description

A kind of fairing isolated network recovery electrolytic aluminium load control system
Technical field
The present invention relates to a kind of fairing isolated networks to restore electrolytic aluminium load control system.
Background technique
With the development of national interconnection power system, the safe operation of bulk power grid is greatly paid close attention to.However, due to warp The many factors such as Ji and history, China are high energy there are still the weak power grid of multiple isolated operations, especially aluminum electrolysis industry Consumption industry, in order to reduce production cost, it is independently operated that many aluminium electrolysis enterprises use power plant for self-supply's power supply (isolated network power supply) Situation.Such power grid belongs to typical " large-sized unit, big load, small net ", and single machine accounting weight, load accounting are big, then frequency Stability problem is such power grid problem the most outstanding.And the emergency control method of bulk power grid might not in such power grid Can be applicable in completely, therefore, develop a kind of fairing and restore electrolytic aluminium load control system under isolated power grid, seek it is a kind of from The control mode of the dynamic adjusting for participating in electrolytic aluminium load, is to be highly desirable to the stability for improving dynamic frequency under isolated network state , to guarantee the safe and reliable operation of Isolated Network System.
Summary of the invention
Its purpose of the invention, which is that, provides a kind of fairing isolated network recovery electrolytic aluminium load control system, solves and answers For aluminum electrolysis industry under isolated power grid, after occurring the biggish unit tripping of relative capacity in Intranet and outer net, system goes out Now a large amount of power shortage, great mutation is had occurred by serious impact, frequency and voltage in power grid, or even destroys power train The problem of stability of uniting.
It adopts the technical scheme that achieve the above object, a kind of fairing isolated network recovery electrolytic aluminium Load Regulation system System, including PLC controller, the output unit of the PLC controller respectively with rectifier cabinet, high-tension switch cabinet, on-load voltage regulating switch, Rectifier transformer, transformer oil be air-cooled, technique DCS, rectifier cabinet, control cabinet, pure water cooling unit, direct current disconnecting link and direct current transducer Input unit connected by the way of ControlNet double-network redundant, it is rectifier cabinet, high-tension switch cabinet, on-load voltage regulating switch, whole Convertor transformer, transformer oil be air-cooled, technique DCS, rectifier cabinet, control cabinet, pure water cooling unit, direct current disconnecting link and direct current transducer Output unit is connect by the way of ControlNet double-network redundant with the input unit of PLC controller；The PLC controller Also it is connect respectively with PC control unit, touch screen control unit, DCS control unit by too net communication modes.
Beneficial effect
The present invention has the following advantages that compared with prior art.
It is an advantage of the invention that between PLC controller and each unit by the way of ControlNet double-network redundant, respectively PLC controller is connect with background monitoring room using ethernet communication mode, ensures the control between current stabilization control system in this way System net exchange data also ensure the reliability and rapidity of each network not by the interference of background monitoring data.
Detailed description of the invention
Below in conjunction with attached drawing, the invention will be further described.
Fig. 1 is the annexation figure between each component units of the present invention；
Fig. 2 is that aluminium electrolysis commutator device tune carries frequency stabilization flow chart in the present invention；
Fig. 3 is aluminium electrolysis commutator grid communication structure figure under isolated power grid in the present invention；
Fig. 4 is aluminium electrolysis commutator system construction drawing in the present invention.
Specific embodiment
With reference to the accompanying drawing, the present invention is further illustrated.
This system includes PLC controller 1, as Figure 1-Figure 4, the output unit of the PLC controller 1 respectively with rectification Cabinet 2, high-tension switch cabinet 3, on-load voltage regulating switch 4, rectifier transformer 5, transformer oil be air-cooled 6, technique DCS7, rectifier cabinet 8, control Cabinet 9, pure water cooling unit 10, direct current disconnecting link 11 and direct current transducer 12 input unit use the side of ControlNet double-network redundant Formula connection, rectifier cabinet 2, high-tension switch cabinet 3, on-load voltage regulating switch 4, rectifier transformer 5, transformer oil be air-cooled 6, technique DCS7, Rectifier cabinet 8, control cabinet 9, pure water cooling unit 10, direct current disconnecting link 11 and direct current transducer 12 output unit with PLC controller 1 Input unit connected by the way of ControlNet double-network redundant；The PLC controller 1 also respectively with PC control list Member 13, touch screen control unit 14, DCS control unit 15 are connected by too net communication modes.
The PC control unit 13 carries out writing value, readings by the memory address variable to PLC controller 1.
As shown in Fig. 2, figure main presentation appearance a large amount of power shortage, power grid by serious impact, frequency with When great mutation has occurred in voltage, fairing is how to realize according to frequency variation come regulating electrolytic tank load, mainly It is to assign fixed and each Rectification Power Factor to there is load gear to realize this function by automatically adjusting total score.
As shown in figure 3, this communication is by two communication network groups the figure shows aluminium electrolysis commutator grid Communication Graph At total to adjust between PLC and each machine set PLC by the way of ControlNet double-network redundant, communication speed can reach 7ms, each PLC Fiber optic Ethernet communication modes are used with background monitoring room, ensure the control net exchange number between current stabilization control system in this way According to not by the interference of background monitoring data, while also ensuring the reliability and rapidity of each network.
Present invention is generally directed to be applied to aluminum electrolysis industry under isolated power grid, when there is relative capacity in Intranet and outer net After biggish unit tripping, there is a large amount of power shortage in system, and pole is had occurred by serious impact, frequency and voltage in power grid Big mutation, or even stability of power system is destroyed, the emergency control method of bulk power grid is ineffective at this time.This rectification dress The variation for detecting mains frequency according to the frequency tester of Intranet power distribution equipment bus is set, frequency stabilization function can be carried using tune immediately Can, cooperate generating set in subsequent power transmission lifting current course, according to the difference that frequency changes, according to the frequency of user setting It adjusts load step-length quickly to adjust the output electric current of each the thyristor rectifier unit automatically, have load gear, controls total electricity of commutation system Stream matches the Real-time Balancing of regulating system power generation and power load, Zhi Daopin by reducing or increasing potline current Rate is restored in safe range, the stability of frequency is controlled with this, and then the supply frequency of the entire network system of realization is steady It is qualitative, run it safely and reliably.
During this dynamic auto adjusting electrolytic aluminium load, network stability control device need to be with generating set Intranet Dispatching control center is connected, and understands each unit working condition and overall power generation load-bearing capacity in microgrid, network stability control in real time Device need to be connected with serial master control PLC unit and each machine set PLC unit, to understand in real time and set in each serial, each unit Outer Running State and load level carry path length control strategy and parameter according to the best tune of user's selection, automatically increase or decrease immediately Commutation supply voltage load and intranet and extranet sharing of load are realized and maintain the stabilization of power grids, and power supply quality is kept, while guaranteeing rectification again It unit safety and reliably runs.This control process requires considerably harshness to fairing, and process is also extremely complex, to whole The regulating system of stream unit requires to have higher sensitivity, smaller dead-band and faster dynamic response capability.
Due to powered operation structure special in this way, it is quite harsh, current stabilization that for the frequency stabilization of tune load, this, which crosses range request, Control system is carried from receiving frequency anomaly, then to adjusting until entire mains frequency is stablized, during which will be according to frequency real-time change Load precisely is rapidly adjusted, this crosses range request must be accurate and reliable rapidly.Entire time requirement will control It is completed within 100MS, just because of this, for always adjusting the communication between PLC and each machine set PLC to have to accurately and reliably.The present invention Always adjusting between PLC and each machine set PLC using ControlNet double-network redundant by the way of, each PLC and background monitoring room use with Too net communication modes ensure that the control net exchange data between current stabilization control system are not done by background monitoring data in this way It disturbs, while also ensuring the reliability and rapidity of each network.

Claims (2)

1. a kind of fairing isolated network restores electrolytic aluminium load control system, including PLC controller (1), which is characterized in that described The output unit of PLC controller (1) respectively with rectifier cabinet (2), high-tension switch cabinet (3), on-load voltage regulating switch (4), rectifier transformer Device (5), transformer oil air-cooled (6), technique DCS(7), rectifier cabinet (8), control cabinet (9), pure water cooling unit (10), direct current disconnecting link (11) it is connected by the way of ControlNet double-network redundant with the input unit of direct current transducer (12), rectifier cabinet (2), high pressure Switchgear (3), on-load voltage regulating switch (4), rectifier transformer (5), transformer oil air-cooled (6), technique DCS(7), rectifier cabinet (8), Control cabinet (9), pure water cooling unit (10), direct current disconnecting link (11) and direct current transducer (12) output unit and PLC controller (1) input unit is connected by the way of ControlNet double-network redundant；The PLC controller (1) also respectively with host computer Control unit (13), touch screen control unit (14) and DCS control unit (15) are connected by too net communication modes.
2. a kind of fairing isolated network according to claim 1 restores electrolytic aluminium load control system, which is characterized in that institute PC control unit (13) is stated to carry out writing value, readings by the memory address variable to PLC controller (1).
CN201811523277.7A 2018-12-13 2018-12-13 A kind of fairing isolated network recovery electrolytic aluminium load control system Pending CN109687579A (en)

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Application Number Priority Date Filing Date Title
CN201811523277.7A CN109687579A (en) 2018-12-13 2018-12-13 A kind of fairing isolated network recovery electrolytic aluminium load control system

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Application Number Priority Date Filing Date Title
CN201811523277.7A CN109687579A (en) 2018-12-13 2018-12-13 A kind of fairing isolated network recovery electrolytic aluminium load control system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115992372A (en) * 2023-03-23 2023-04-21 国家电投集团云南国际电力投资有限公司 Flexible direct current micro-grid-based aluminum electrolysis system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1844471A (en) * 2006-03-09 2006-10-11 贵阳铝镁设计研究院 Direct current series detection and control device in aluminium electrolysis factory
JP2009171823A (en) * 2007-12-21 2009-07-30 Nippon Telegr & Teleph Corp <Ntt> Power supply control system and method of controlling the same
CN103606938A (en) * 2013-11-26 2014-02-26 九江九整整流器有限公司 Thyristor rectifying device control system for aluminum electrolysis industry under isolated power system operation
CN103603013A (en) * 2013-12-02 2014-02-26 云南云铝泽鑫铝业有限公司 Stable reliable current stabilization system of aluminium electrolysis industry rectification station
CN204333968U (en) * 2014-11-10 2015-05-13 九江九整整流器有限公司 Rectifying device controller under a kind of lonely net powering mode
EP2896722A1 (en) * 2014-01-15 2015-07-22 ETOGAS GmbH Assembly for supplying an electrolyzer with direct current and facility for carrying out electrolysis
CN204992762U (en) * 2015-04-15 2016-01-20 合肥亿莱克电气有限责任公司 PLC -based DC power supply monitoring system
CN105680559A (en) * 2016-04-06 2016-06-15 国家电网公司 Substation DC system
CN106941323A (en) * 2017-01-17 2017-07-11 茌平信源铝业有限公司 A kind of electrolgtic aluminium commutation system
CN107740142A (en) * 2017-10-18 2018-02-27 九江赛晶科技股份有限公司 The lower thyristor rectifier device redundancy handover control system of compensation operation in a kind of aluminium cell
CN207525354U (en) * 2017-10-18 2018-06-22 九江赛晶科技股份有限公司 A kind of electrolgtic aluminium the thyristor rectifier unit

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1844471A (en) * 2006-03-09 2006-10-11 贵阳铝镁设计研究院 Direct current series detection and control device in aluminium electrolysis factory
JP2009171823A (en) * 2007-12-21 2009-07-30 Nippon Telegr & Teleph Corp <Ntt> Power supply control system and method of controlling the same
CN103606938A (en) * 2013-11-26 2014-02-26 九江九整整流器有限公司 Thyristor rectifying device control system for aluminum electrolysis industry under isolated power system operation
CN103603013A (en) * 2013-12-02 2014-02-26 云南云铝泽鑫铝业有限公司 Stable reliable current stabilization system of aluminium electrolysis industry rectification station
EP2896722A1 (en) * 2014-01-15 2015-07-22 ETOGAS GmbH Assembly for supplying an electrolyzer with direct current and facility for carrying out electrolysis
CN204333968U (en) * 2014-11-10 2015-05-13 九江九整整流器有限公司 Rectifying device controller under a kind of lonely net powering mode
CN204992762U (en) * 2015-04-15 2016-01-20 合肥亿莱克电气有限责任公司 PLC -based DC power supply monitoring system
CN105680559A (en) * 2016-04-06 2016-06-15 国家电网公司 Substation DC system
CN106941323A (en) * 2017-01-17 2017-07-11 茌平信源铝业有限公司 A kind of electrolgtic aluminium commutation system
CN107740142A (en) * 2017-10-18 2018-02-27 九江赛晶科技股份有限公司 The lower thyristor rectifier device redundancy handover control system of compensation operation in a kind of aluminium cell
CN207525354U (en) * 2017-10-18 2018-06-22 九江赛晶科技股份有限公司 A kind of electrolgtic aluminium the thyristor rectifier unit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
张小明: "机旁柜在DCS系统中的作用应强化", 《空分设备安全及运行维修技术研讨会》 *
张锋: "PLC在铝电解整流控制系统中的应用", 《电世界》 *
李瑞光 等: "综合自动化系统在电解铝行业中的应用", 《轻金属》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115992372A (en) * 2023-03-23 2023-04-21 国家电投集团云南国际电力投资有限公司 Flexible direct current micro-grid-based aluminum electrolysis system
US12021380B1 (en) 2023-03-23 2024-06-25 SPIC Yunnan International Power Investment Co., Ltd. Electrolytic aluminum system based on flexible dc microgrid

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