CN104218596A - Energy-saving device based on low-voltage line load balance - Google Patents
Energy-saving device based on low-voltage line load balance Download PDFInfo
- Publication number
- CN104218596A CN104218596A CN201410496527.8A CN201410496527A CN104218596A CN 104218596 A CN104218596 A CN 104218596A CN 201410496527 A CN201410496527 A CN 201410496527A CN 104218596 A CN104218596 A CN 104218596A
- Authority
- CN
- China
- Prior art keywords
- low
- switch
- load
- voltage
- circuit
- 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
Links
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
-
- 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
- Y04S40/126—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 wireless data transmission
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses an energy-saving device based on low-voltage line load balance. The energy-saving device comprises a low-voltage master control switch, wherein the first end of the low-voltage master control switch is connected with the secondary side of a transformer, a primary side of the transformer is used for being connected with the power grid power supply end, the second end of the low-voltage master control switch is connected into a low-voltage bus, a multiple balance power distribution lines are further connected onto the low-voltage bus and are series circuits formed by sequentially connecting a wire outlet switch and N sectioned switches, the wire outlet switch is connected into the low-voltage bus, and the tail ends between every two balance power distribution lines are connected through an interconnection switch and form a low-voltage loop. The low-voltage master control switch and the wire outlet switch on each low-voltage master control switch are connected with a load balance controller through an independent communication channel, and the N sectioned switches on each balance power distribution line are connected with the load balance controller through an independent communication channel. The line heavy load or overload problem caused by unbalanced line load is solved, and the whole line outage caused by faults or overhauling is avoided.
Description
Technical field
The present invention relates to electric power system low pressure equalization distribution technique field, particularly relate to a kind of energy saver based on low-voltage circuit load balancing and the control method thereof that are applicable to the low-voltage circuit of 380V and 220V.
Background technology
, there is not the passage of load transfer in existing low-voltage distributing line many employings radial fashion.In actual distribution network line, electricity consumption situation also exists electricity consumption peak valley and the peak valley of property electricity consumption round the clock, causes the phenomenon that on circuit, Different periods institute on-load is uneven, simultaneously, also there will be load unbalanced phenomena between circuit and circuit, some circuit heavy duties or overload, some line loads are lighter.The subject matter summing up the existence of current low-voltage distributing line is:
(1) heavy duty or overload circuit raise due to line temperature, and conductor resistance increases, and causes line energy loss to increase;
(2) there is the potential safety hazards such as fire in heavy duty or overload circuit;
Article (3) one, when circuit breaks down, the use on this circuit needs to have a power failure per family, and power failure area is large, affects power supply reliability.
Summary of the invention
The object of this invention is to provide a kind of energy saver based on low-voltage circuit load balancing, reasonably turn for allotment according to the load between circuit, solve line load unbalanced cause circuit heavy duty or overload problems, avoid because fault or maintenance cause whole piece line outage, reduce power failure area, improve low-voltage power supply reliability, ensure low-voltage distribution system safe operation.
The technical solution used in the present invention is:
A kind of energy saver of low-voltage circuit load balancing, comprise low pressure master switch, low pressure master switch first end connection transformer secondary side, transformer primary side is for connecting mains supply end, second termination of low pressure master switch enters low-voltage bus bar, low-voltage bus bar is also connected with the balanced distribution line of multichannel, the balanced distribution line of multichannel is the series circuit connected to form successively by an outlet switch and N number of block switch, outlet switch access low-voltage bus bar, the end between the balanced distribution line of adjacent two-way is connected by interconnection switch and forms low tension loop; Described low pressure master switch and the outlet switch on the low pressure master switch of every road by together with independently communication channel connected load balance controller, the N number of block switch on the balanced distribution line in every road is by independently communication channel connected load balance controller together.
Described Load balanced control device comprises microprocessor, and microprocessor connects power module, data storage, program storage, 3G communication module, WiFi communication module, network communication of wireless sensor module, RS485 communication module, RS232 communication module and ethernet communication module respectively.
A described low pressure master switch and the employing of multiple outlet switch have the above-mentioned all block switches of current protection merit and interconnection switch employing has current protecting function; operating power has two-way automatic switching function, and can match the intelligent low voltage circuit breaker of communication mode as required.
Described low pressure master switch, multiple outlet switch, transformer and Load balanced control device are located in switchgear house.
The present invention needs to configure the load data information of outlet switch on the low pressure master switch of electricity consumption equalization region and the balanced distribution line of multichannel and block switch by the RS485 communication module collection of Load balanced control device, carry out analyzing, processing further by the microprocessor in Load balanced control device, thus send control command to corresponding switch, reasonably turn for allotment according to the load between circuit.Meanwhile, solve the unbalanced circuit heavy duty that causes of line load or overload problems, avoid, because fault or maintenance cause whole piece line outage, reducing power failure area, improve low-voltage power supply reliability, ensure low-voltage distribution system safe operation.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the theory diagram of Load balanced control device of the present invention.
Embodiment
As shown in Figure 1, 2, the present invention includes low pressure master switch 3, low pressure master switch 3 first end connection transformer 2 secondary side, transformer 2 primary side is for connecting mains supply end, second termination of low pressure master switch 3 enters low-voltage bus bar 4, low-voltage bus bar 4 is also connected with the balanced distribution line of multichannel, the balanced distribution line of multichannel is the series circuit connected to form successively by an outlet switch and N number of block switch, outlet switch access low-voltage bus bar 4, the end between the balanced distribution line of adjacent two-way is connected by interconnection switch and forms low tension loop; Described low pressure master switch 3 and the outlet switch on the low pressure master switch of every road by together with independently communication channel connected load balance controller 5, the N number of block switch on the balanced distribution line in every road is by independently communication channel connected load balance controller 5 together.Load balanced control device 5 comprises microprocessor, and microprocessor connects power module, data storage, program storage, 3G communication module, WiFi communication module, network communication of wireless sensor module, RS485 communication module, RS232 communication module and ethernet communication module respectively.Low pressure master switch 3, multiple outlet switch, transformer 2 and Load balanced control device 5 are located in switchgear house 1.A low pressure master switch and multiple outlet switch adopt the intelligent low voltage circuit breaker with current protecting function and communication function; above-mentioned all block switches and interconnection switch adopt has current protecting function; operating power has two-way automatic switching function, and can match the intelligent low voltage circuit breaker of communication mode as required.
Low pressure master switch 3 of the present invention and outlet switch select intelligent low voltage circuit breaker; requirement has current protecting function; and possess communication function; intelligent low-pressure circuit breaker selected by block switch and interconnection switch 13; requirement has current protecting function; the operating power of switch has two-way automatic switching function, can match the communication mode such as radio communication, RS485 communication as required, select wire communication mode in present principles figure.
As shown in Figure 2, Load balanced control device 5 is primarily of microprocessor, power module, data storage, program storage, 3G communication module, WIFI communication module, network communication of wireless sensor module, RS485 communication module, RS232 communication module, ethernet communication module composition.
Wherein, microprocessor adopts Atmel9263, installs (SuSE) Linux OS; Power module is used for powering for Load balanced control device 5; Low pressure master switch, outlet switch, section breaker and interconnection switch send to Load balanced control device 5 data by communication port deposited by data storage; Load balanced control device 5 working procedure deposited by program storage; 3G communication module is used for carrying out radio communication by mobile network and a distant place, configures 2 road communication ports, can match according to engineering practice; Wifi communication module is used for carrying out short-distance wireless communication with local mobile terminal or computer, configures 2 road communication ports; Network communication of wireless sensor module, for carrying out radio communication with the section breaker on circuit and interconnection switch, configures 4 road communication ports, can match according to engineering practice; RS485 communication module is used for carrying out wire communication with low pressure master switch, outlet switch, block switch and interconnection switch, configures 4 tunnel communication interfaces, can match according to engineering practice; RS232 communication module is used for and the communication such as field adjustable computer, configures 2 tunnel communication interfaces, can be used as alternate communication channels; Ethernet communication module is used for, with the communication of the network equipment such as computer, configuring 2 tunnel communication interfaces.As shown in Figure 1, Load balanced control device 5 uses 3 RS485 interfaces to communicate with variable connector, a RS485 of low order end is by communication line and block switch 8, block switch 9, block switch 10, block switch 11 is connected with interconnection switch 13, a middle RS485 interface is by communication line and low pressure master switch 3, outlet switch 6, outlet switch 19 connects, a RS485 interface of high order end is by communication line and block switch 14, block switch 15, block switch 16, block switch 17 connects, certainly, also need to select communication mode according to engineering practice, configuration communication interface.Suppose that the load on circuit is evenly distributed, when circuit being installed 3 block switches, circuit is divided into 4 sections, and every section of load accounts for 25% of whole piece line load; When circuit being installed 4 block switches, circuit is divided into 5 sections, and every section of load accounts for 20% of whole piece line load; When circuit being installed 5 block switches, circuit is divided into 6 sections, and every section of load accounts for 16.7% of whole piece line load.The quantity of block switch will be determined according to on-site actual situations, recommends employing 4 block switch schemes.
The main implementation of Load balanced control device 5 is: first, power module switches on power, to microprocessor and other module for power supply, microprocessor operating load balance controller 5 program, carry out system initialization, microprocessor sends communication instruction to RS485 communication module or network communication of wireless sensor module again, gather the data of each switch, microprocessor processes accordingly to each switch data collected again, generate the load data of each bar circuit total load situation and each section of circuit, judge that whether the load between circuit is balanced, if unbalanced and meet regularization condition, then send remote control command to respective switch, continue to perform next collection or adjustment process, until meet equilibrium.In fig. 1, for block switch 8, illustrate that Load balanced control device 5 gathers the implementation of switch data.Microprocessor sends the data acquisition instructions of numbering containing block switch 8 to a RS485 interface of low order end, simultaneously, microprocessor also can carry out the wireless transmission of Information Monitoring by network communication of wireless sensor module, this instruction is passed on other switching circuits of block switch 8 and communication line 12 connection by communication line 12, now, block switch 8 response instruction, and other switches will not respond; Returned the data needing to gather immediately to a RS485 interface of low order end by communication line 12, microprocessor sends image data instruction to other switches again, gathers the data of each switch one by one.For block switch 8 in accompanying drawing 1, the implementation of Load balanced control device 5 remote control switch deciliter is described.Microprocessor sends the remote control command of numbering containing block switch 8 to a RS485 interface of low order end; This instruction passes to by communication line 12 other switches that 8 block switches and communication line connect, block switch 8 response instruction and other switches will not respond; If the instruction of remote control separating brake, then block switch 8 disjunction, if reclosing command, then block switch 8 closes; After remote control command is finished, block switch 8 returns remote control execution result by communication line 12 to a RS485 interface of low order end.
For accompanying drawing 1, the following detailed description of the self-adjusting operation principle of load balancing of the present invention:
When circuit normally runs, master switch, outlet switch and block switch are in the state of closing, and interconnection switch is in disjunction state; The total load of circuit I7 equals circuit I7 each section of load sum, and the total load of circuit II18 equals circuit II18 each section of load sum, and namely one section of load of circuit is 20% of whole piece line load.
The total load data of Load balanced control device 5 according to every bar circuit and the load data of every section of circuit, determine the switch number and the remote control order that need remote control.If circuit I7 heavy duty or overload, the relative underloading of circuit II18, suppose that circuit I7 load is greater than 40% of circuit II18 load, Load balanced control device 5 remote control closes interconnection switch 13, remote control disjunction block switch 11, now, the sharing of load of the 11-13 section of circuit I7 is on circuit II18, the 6-8 of circuit I7, 8-9, the load of 9-10 section is powered all normal, but, circuit I7 load have dropped 20%, due to load the closing by interconnection switch 13 of the 11-13 section of circuit I7, transfer on circuit II18, thus make circuit II18 load rise 20%, the load of circuit I7 and circuit II18 reaches balanced, suppose that circuit I7 load is greater than 80% of circuit II18 load, Load balanced control device 5 remote control closes interconnection switch 13, remote control disjunction block switch 10, by the 10-11 section of circuit I7 and the sharing of load of 11-13 section on circuit II18, circuit I7 load declines 40%, circuit II18 load rises 40%, and the load of circuit I7 and circuit II18 reaches balanced, in like manner can adjust the load of other sections, make load between circuit reach balanced.If also there is circuit III, or multiple circuit, then need to join and adjust the outlet switch 19 on circuit II18 or the outlet switch on each bar circuit and block switch.
The implementation procedure that line looped network is powered is as follows:
When the outlet switch 6 of circuit I7 trips for some reason or the 6-8 section of circuit I7 has a power failure for some reason, the user of circuit I7 all has a power failure, now can remote control disjunction block switch 8, close interconnection switch 13, more successively close block switch 11, block switch 10, block switch 9.Like this, except the 6-8 section power failure of circuit I7, other section restores electricity, thus reduces power failure section, improves power supply reliability.
Straighforward operation completes on the hand-held mobile terminals such as mobile phone.Web system is embedded in Load balanced control device 5, hand-held mobile terminal is connected by Wifi passage and Load balanced control device 5, input username and password logs on the Web interface in Load balanced control device 5, Web interface has the electrical power wiring figure of accompanying drawing 1, can carry out straighforward operation on figure, remote control command sends to corresponding switch by Load balanced control device 5.
Claims (5)
1. the energy saver based on low-voltage circuit load balancing, it is characterized in that: comprise low pressure master switch, low pressure master switch first end connection transformer secondary side, transformer primary side is for connecting mains supply end, second termination of low pressure master switch enters low-voltage bus bar, low-voltage bus bar is also connected with the balanced distribution line of multichannel, the balanced distribution line of multichannel is the series circuit connected to form successively by an outlet switch and N number of block switch, outlet switch access low-voltage bus bar, end between the balanced distribution line of adjacent two-way is connected by interconnection switch and forms low tension loop, described low pressure master switch and the outlet switch on the low pressure master switch of every road by together with independently communication channel connected load balance controller, the N number of block switch on the balanced distribution line in every road is by independently communication channel connected load balance controller together.
2. the energy saver based on low-voltage circuit load balancing according to claim 1, it is characterized in that: described Load balanced control device comprises microprocessor, microprocessor connects power module, data storage, program storage, 3G communication module, WiFi communication module, network communication of wireless sensor module, RS485 communication module, RS232 communication module and ethernet communication module respectively.
3. the energy saver based on low-voltage circuit load balancing according to claim 2, is characterized in that: a described low pressure master switch and multiple outlet switch adopt the intelligent low voltage circuit breaker with current protecting function and communication function.
4. the energy saver based on low-voltage circuit load balancing according to claim 3; it is characterized in that: above-mentioned all block switches and interconnection switch adopt has current protecting function; operating power has two-way automatic switching function, and can match the intelligent low voltage circuit breaker of communication mode as required.
5. the energy saver based on low-voltage circuit load balancing according to claim 4, is characterized in that: described low pressure master switch, multiple outlet switch, transformer and Load balanced control device are located in switchgear house.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410496527.8A CN104218596A (en) | 2014-09-25 | 2014-09-25 | Energy-saving device based on low-voltage line load balance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410496527.8A CN104218596A (en) | 2014-09-25 | 2014-09-25 | Energy-saving device based on low-voltage line load balance |
Publications (1)
Publication Number | Publication Date |
---|---|
CN104218596A true CN104218596A (en) | 2014-12-17 |
Family
ID=52099837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410496527.8A Pending CN104218596A (en) | 2014-09-25 | 2014-09-25 | Energy-saving device based on low-voltage line load balance |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104218596A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106961107A (en) * | 2017-03-23 | 2017-07-18 | 国网湖北省电力公司十堰供电公司 | Transformer networking control method and device |
CN107979107A (en) * | 2015-05-07 | 2018-05-01 | 陈鸽 | A kind of equal balance system of electrical load for low-voltage network |
CN108133586A (en) * | 2017-12-01 | 2018-06-08 | 国网北京市电力公司 | Load acquisition method, device, equipment, storage medium and processor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101534001A (en) * | 2008-03-11 | 2009-09-16 | 杨万钟 | Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section |
WO2013101865A1 (en) * | 2011-12-29 | 2013-07-04 | Stem, Inc. | Multiphase electrical power assignment at minimal loss |
CN203377598U (en) * | 2013-04-26 | 2014-01-01 | 深圳市泰昂能源科技股份有限公司 | Intelligent load balancing apparatus |
CN204103499U (en) * | 2014-09-25 | 2015-01-14 | 国家电网公司 | Based on the energy saver of low-voltage circuit load balancing |
-
2014
- 2014-09-25 CN CN201410496527.8A patent/CN104218596A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101534001A (en) * | 2008-03-11 | 2009-09-16 | 杨万钟 | Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section |
WO2013101865A1 (en) * | 2011-12-29 | 2013-07-04 | Stem, Inc. | Multiphase electrical power assignment at minimal loss |
CN203377598U (en) * | 2013-04-26 | 2014-01-01 | 深圳市泰昂能源科技股份有限公司 | Intelligent load balancing apparatus |
CN204103499U (en) * | 2014-09-25 | 2015-01-14 | 国家电网公司 | Based on the energy saver of low-voltage circuit load balancing |
Non-Patent Citations (2)
Title |
---|
万国成等: "主馈线分段开关的设置研究", 《中国电机工程学报》 * |
赵树仁: "配电网电缆化改造中的网架结构与自动化方案", 《陕西电力》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107979107A (en) * | 2015-05-07 | 2018-05-01 | 陈鸽 | A kind of equal balance system of electrical load for low-voltage network |
CN107979107B (en) * | 2015-05-07 | 2020-04-21 | 江苏红豆电力工程技术有限公司 | Power load balancing system for low-voltage power distribution network |
CN106961107A (en) * | 2017-03-23 | 2017-07-18 | 国网湖北省电力公司十堰供电公司 | Transformer networking control method and device |
CN108133586A (en) * | 2017-12-01 | 2018-06-08 | 国网北京市电力公司 | Load acquisition method, device, equipment, storage medium and processor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104821593A (en) | Low-voltage distribution transformer load intelligent adjustment system and distribution method | |
CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
CN204243777U (en) | Carry the phase-change switch of phase sequence recognition function | |
CN104362654A (en) | Three-phase balance power supply system, three-phase balance method of three-phase balance system, as well as modular power distribution cabinet with three-phase balance power supply system | |
CN204668942U (en) | There is the distribution network structure pattern of high reliability | |
CN202957611U (en) | Three-phase current unbalance adjusting system of power distribution network | |
CN104410165B (en) | A kind of method and system of micro-internetworking | |
CN104218596A (en) | Energy-saving device based on low-voltage line load balance | |
CN204271512U (en) | A kind of intelligent loaded capacity-regulated transformer station | |
CN107134808B (en) | Automatic control system and control method for transformer group | |
CN204103499U (en) | Based on the energy saver of low-voltage circuit load balancing | |
CN207098628U (en) | A kind of low pressure administers automatic control switch | |
CN202696279U (en) | Circuit breaker controller with dual-power changeover function and dual-power switching system | |
CN105048520A (en) | Multi-load balance control system and method | |
CN204271513U (en) | A kind of loaded capacity-regulated transformer station realizing Based Intelligent Control | |
CN106787200A (en) | 30 degree of phase angle difference distribution lines do not have a power failure and turn to close solution loop device for system | |
CN106324391A (en) | Simple-wiring multipath intelligent online leakage protection no-power-failure testing device | |
CN106896278B (en) | A kind of intelligence phase sequence identification device | |
CN205092446U (en) | Rural power grids intelligent power distribution cabinet | |
CN207381983U (en) | A kind of three-phase load unbalance automatic regulating system | |
CN217113058U (en) | Remote control switch delivery outlet system | |
CN103208799B (en) | Intelligence load balancing system | |
CN209001591U (en) | A kind of power distribution station three-phase imbalance control system | |
CN105244778A (en) | Rural power grid intelligent power distribution cabinet | |
CN105552937A (en) | Power carrier technology-based load side phase identification method for three-phase four-wire system network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |