CN108923444B - Hybrid control method for adjusting three-phase unbalance degree of power distribution area and application - Google Patents
Hybrid control method for adjusting three-phase unbalance degree of power distribution area and application Download PDFInfo
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- CN108923444B CN108923444B CN201810843173.8A CN201810843173A CN108923444B CN 108923444 B CN108923444 B CN 108923444B CN 201810843173 A CN201810843173 A CN 201810843173A CN 108923444 B CN108923444 B CN 108923444B
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- 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
Abstract
The invention relates to the field of improving the three-phase electric energy quality of a low-voltage power supply area, and particularly discloses a hybrid control method for adjusting the three-phase unbalance degree of a power distribution area and application thereof. The hybrid control method for adjusting the three-phase unbalance degree of the power distribution area is characterized by comprising the following steps of: the system comprises network hardware consisting of an intelligent phase-change switch, an integrated controller, a server and terminal equipment, and a data transmission platform consisting of a communication network, the communication equipment, the server and a human-computer interaction terminal; the intelligent phase-change switch is divided into a switch with a wireless remote control function and a switch without the wireless remote control function, wherein the switch with the wireless remote control function is installed at a position near the distribution transformer, and the switch without the wireless remote control function is installed at the tail end of a distribution line. The control mode of the invention is simple and clear, and the two control modes are mutually matched, so that the unbalance degree of three-phase current at the outlet side of the distribution transformer can be adjusted, and the unbalance degree of three-phase voltage at the tail end of the line of the transformer area can be finely adjusted.
Description
Technical Field
The invention relates to the field of improving the three-phase electric energy quality of a low-voltage power supply area, in particular to a hybrid control method for adjusting the three-phase unbalance degree of a power distribution area and application thereof.
Background
The method for controlling the three-phase unbalance degree of the power supply area by using the intelligent phase-change switch is currently divided into two methods: firstly, the integrated controller uniformly controls each phase change switch in the transformer area, and three-phase currents on the distribution transformer output side of the transformer area tend to be balanced by controlling the distribution of the three-phase currents of the phase change switches; and secondly, the distribution of the load in three phases of the power grid is automatically adjusted in real time according to the three-phase voltage, the phase angle and the power factor of each user access point of the power grid of the transformer area, so that the unbalance degree of the three phases is controlled to be within a set threshold range. The two control methods respectively have certain disadvantages, namely, the first control method can realize the three-phase current balance of the output side of the distribution transformer, but cannot realize the three-phase load balance of the tail end of the distribution line of the transformer area; and the second method can realize the three-phase load balance at the tail end of the distribution line of the transformer area, but cannot well control the three-phase current balance at the output side of the distribution transformer under the condition that the economical efficiency of the installation cost of the transformer area is limited. Therefore, how to realize the three-phase voltage balance at the tail end of the line of the distribution substation in the process of controlling the three-phase load balance of the distribution substation and well control the balance degree of three-phase current at the output side of the distribution transformer is a new effort direction of a substation control method.
Disclosure of Invention
The invention provides a hybrid control method for adjusting three-phase unbalance degree of a power distribution area and application thereof, which are used for overcoming the defects of the prior art and adjusting three-phase balance and improving power quality.
The invention is realized by the following technical scheme:
a hybrid control method for adjusting three-phase unbalance degree of a power distribution area is characterized by comprising the following steps: the intelligent phase-change system comprises network hardware consisting of an intelligent phase-change switch, an integrated controller, a server and terminal equipment, and a data transmission platform consisting of a communication network, communication equipment, the server and a human-computer interaction terminal; each server covers a plurality of centralized controllers, each centralized controller receives data information sent by a plurality of intelligent phase change switches in a distribution room where the centralized controller is located and uploads the received information to the server, and the server is connected with terminal equipment provided with a human-computer interaction terminal; the intelligent phase-change switch is divided into a switch with a wireless remote control function and a switch without the wireless remote control function, wherein the switch with the wireless remote control function is installed at a position near the distribution transformer, and the switch without the wireless remote control function is installed at the tail end of a distribution line.
The more preferable technical scheme of the invention is as follows:
the data transmission network of each district comprises an integrated controller and a plurality of intelligent phase change switches, wherein the integrated controller is installed on the outlet side of the distribution transformer of the district and is used for communicating the intelligent phase change switches and the server. The centralized control device is used for acquiring voltage and current information of a distribution transformer outlet, uploading the acquired information to the server, and meanwhile, the centralized control device receives data packets sent by all intelligent metering boxes with networking functions in the local area and uploads the received data packets to the server through a GPRS network; the centralized controller is also responsible for receiving control instruction information from the server and sending the information to the intelligent phase change switch with the specified ID code. The centralized controller is located at the hub position of information transmission in the transformer area and is a total outlet and a total inlet of all information transmission in the transformer area.
The server completes data monitoring and data processing tasks of the plurality of transformer areas and stores the operation data uploaded by each transformer area.
The terminal equipment is a PC computer terminal or a smart phone terminal with a corresponding human-computer interaction interface, the PC computer terminal and the server are communicated through Ethernet or a wireless network, and the smart phone terminal and the server are communicated through GPRS.
The communication network comprises a LORA local area network which is connected with the intelligent phase change switch and the centralized controller in the transformer area, and a GPRS network which is connected between the centralized controller and the main server in each transformer area.
The intelligent phase-change switch is used for feeding wires in a three-phase four-wire mode and is connected to a main line or each branch line of the power supply of the transformer area.
The intelligent phase change switch is provided with an intelligent switch central processor, and the intelligent switch central processor is connected with a display module, an electric energy acquisition chip, a communication module, a clock storage module, a power module, an electric energy pulse acquisition module, a phase change mechanism and a key module; the communication module is one of carrier communication, wireless network, GPRS and 485/232 communication.
The application of the hybrid control method comprises two control modes. Control mode 1: the intelligent phase change switch installed near the distribution transformer of the transformer area has a wireless remote control function and is controlled by an integrated controller in the transformer area, the intelligent phase change switch transmits acquired load information to the integrated controller through a wireless communication network, the integrated controller comprehensively calculates and judges a next phase change scheme according to three-phase current data at the output side of the distribution transformer, and the three-phase current at the output side of the distribution transformer is in a set threshold range by adjusting load distribution of the phase change switch near the distribution transformer; control mode 2: the intelligent phase change switch at the tail end of the line branch of the transformer area has a self-adjusting function, and can automatically determine a phase change scheme according to the three-phase voltage, the phase angle and the power factor of the access point, so that the unbalance degree of the three-phase voltage of the access point is controlled within a set threshold range; the two control modes are carried out simultaneously and do not interfere with each other.
The control mode 1 is used for roughly adjusting the unbalance degree of the three-phase current, and the three-phase current at the output side of the distribution transformer is adjusted to be basically in a set threshold range by adjusting the load distribution of a phase change switch near the distribution transformer; control mode 2 is with terminal accurate adjustment of circuit, on the basis of control mode 1 adjustment, redistributes distribution network three-phase load again to the terminal three-phase voltage unbalance of accurate control distribution lines is in setting for the threshold value within range, and controls and distributes and become output side three-phase current unbalance and be in setting for the threshold value within range, thereby when effective control is distributed and becomes output side three-phase current unbalance, the terminal line loss of maximum reduction circuit.
The centralized controller is arranged on the output side of the distribution transformer, and is used for collecting three-phase voltage, three-phase current, a phase angle and a power factor output by the distribution transformer and calculating the unbalance degree of the three-phase voltage and the unbalance degree of the three-phase current; meanwhile, the centralized controller receives relevant information from the intelligent phase change switch through a wireless communication network, obtains a phase change scheme of the next phase change switch through the operation of the system of the centralized controller according to the received information, and sends an instruction to the corresponding intelligent phase change switch to enable the intelligent phase change switch to make a specified phase change action.
And the terminal equipment is provided with a human-computer interaction interface, the human-computer interaction interface is used for inquiring the electricity consumption information, the power grid operation state information and the operation information of the intelligent metering box of all controlled transformer areas, and the intelligent phase change switch is remotely controlled through the human-computer interaction interface to realize various established actions.
The control mode of the invention is simple and clear, the two control modes are mutually matched, the unbalance degree of three-phase current at the outlet side of the distribution transformer can be adjusted, and the unbalance degree of three-phase voltage at the tail end of the line of the distribution area can also be finely adjusted, so that the hybrid control method can comprehensively regulate and control the unbalance degree of three-phase voltage and current in the distribution area, comprehensively and accurately control the unbalance degree of three-phase voltage and current in the distribution area, realize real three-phase balance, further ensure the electric energy quality of the distribution area to the maximum extent and reduce the line loss.
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The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a data transmission link of a smart commutation switch according to the present invention;
FIG. 2 is a schematic diagram showing the distribution of the installation positions of the intelligent phase-change switches in the distribution room according to the present invention;
FIG. 3 is a schematic diagram illustrating the wiring principle of the intelligent commutation switch of the present invention;
FIG. 4 is a diagram of the hardware architecture of a single intelligent switch according to the present invention.
Detailed Description
Example (b):
a hybrid control method for adjusting three-phase unbalance of a power distribution area comprises data processing network hardware consisting of an intelligent phase change switch, an integrated controller, a server and terminal equipment, and a data transmission network consisting of a communication network, the communication equipment, the server and a human-computer interaction terminal; each server covers a plurality of centralized controllers, each centralized controller receives data information sent by a plurality of intelligent phase change switches from a distribution room where the centralized controller is located, the received information is uploaded to the server, and the server is connected with terminal equipment provided with a human-computer interaction terminal.
As shown in fig. 1, each server may cover 300 (determined according to specific installation conditions) centralized controllers, and each centralized controller receives data information sent by an intelligent phase change switch in a distribution area where the centralized controller is located, and uploads the received information to the server; the server can be connected with the PC terminal and the smart phone terminal, and each terminal is provided with a corresponding human-computer interaction interface. The intelligent metering box and the centralized controller are communicated through an LORA local area network (not limited to the communication mode), the centralized controller and the server are communicated through a GPRS network, the PC terminal and the server are communicated through Ethernet or a wireless network, and the server and the intelligent mobile phone terminal are communicated through the GPRS. The intelligent phase change switch can be remotely controlled through an application interface of a PC (personal computer) end or an intelligent mobile phone to realize phase change action and tripping action.
As shown in fig. 2, the data transmission network in each area is composed of 1 centralized controller and a plurality of intelligent phase-change switches. The centralized controller is arranged at the outlet side of the distribution transformer of the transformer area and is used for acquiring voltage and current information of the outlet of the distribution transformer and uploading the acquired information to the server; meanwhile, the concentrator receives data packets sent by all the intelligent metering boxes in the local area and uploads the received data packets to the server through a GPRS network; the concentrator is also responsible for receiving control instruction information from the server and sending the information to the intelligent commutation switch with the specified ID code. The centralized controller is located at the hub position of information transmission in the transformer area and is a total outlet and a total inlet of all information transmission in the transformer area. The intelligent phase change switch in the transformer area is divided into two types, namely an intelligent phase change switch with a wireless remote control function and an intelligent phase change switch without the wireless remote control function. As shown in the figure, the intelligent phase change switch with the wireless remote control function is selectively installed in an area close to the distribution and transformation position of the transformer area, the intelligent phase change switch without the wireless remote control function is selectively installed at the tail end (the position far away from the distribution and transformation position) of a circuit of the transformer area, and the installation proportion of the two switches is determined according to the electricity utilization condition of the transformer area. After the intelligent phase change switch of the distribution transformer is started to operate, the integrated controller of the distribution transformer firstly controls the intelligent phase change switch with the wireless remote control function to carry out phase change according to the condition of the three-phase current unbalance degree at the outlet side of the distribution transformer, and carries out coarse adjustment on the three-phase unbalance degree of the distribution transformer, so that the three-phase unbalance degree at the output side of the distribution transformer can be greatly reduced; and then, carrying out a new round of adjustment on the intelligent phase change switch without the wireless remote control function, carrying out load distribution according to the three-phase voltage, the phase angle and the power factor of the access point, executing a phase change action, and keeping the unbalance degree of the three-phase voltage at the tail end of the line of the console area within a set threshold range. Because the three-phase voltage and current are in a basic inverse proportion relation, namely when the load of a certain phase current in the three phases of ABC is increased, the line voltage is reduced, and otherwise, the line voltage is increased. Therefore, the voltage three-phase unbalance degree is adjusted by adjusting the load distribution at the tail end of the transformer area line, and simultaneously, the three-phase current unbalance degree at the outlet side of the transformer area distribution transformer is adjusted for a new round, so that the three-phase current unbalance degree at the outlet side of the transformer area distribution transformer is controlled within an allowable range.
If the wireless local area network communication between the integrated controller and the intelligent phase change switch is interrupted, the intelligent phase change switch automatically switches into a system working mode, and the phase change action is determined by detecting the three-phase voltage, the phase angle and the power factor of the access point; when the wireless communication is recovered to be normal, the wireless communication is automatically switched to a networking working mode, and the integrated controller sends a phase change instruction to control the intelligent phase change switch to execute a phase change action.
As shown in fig. 3, the intelligent phase-change switch is connected to a main line or each branch line of the power supply of the transformer area through a three-phase four-wire incoming line. The switch outputs a single-phase power supply which is connected with a plurality of user electric energy meters in a tapping mode. All the electric energy meters of switch tapping are connected with intelligent commutation switch IO mouth through the signal line, and the pulse signal transmission that the electric energy pulse of each electric energy meter produced self sends the intelligent commutation switch through the signal line to interface, and intelligent commutation switch calculates the total electric energy use amount of all electric energy meters in this batch meter specific time section.
As shown in fig. 4, the intelligent commutation switch has a central processing unit, which is connected with a display module, an electric energy collecting chip, a communication module (any one of carrier, wireless, GPRS and 485/232), a clock storage module, a power supply module, an electric energy pulse collecting module, a commutation mechanism and a key module.
The application range of the method of the invention is as follows: the method is used for comprehensively adjusting the three-phase unbalance of the power grid in a community or rural area, finally realizes that the three-phase voltage and the three-phase current unbalance of the power distribution station area can be controlled in a reasonable range, optimizes the power quality and reduces the line loss.
Claims (8)
1. A hybrid control method for adjusting three-phase unbalance degree of a power distribution area is characterized by comprising the following steps: the system comprises network hardware consisting of an intelligent phase-change switch, an integrated controller, a server and terminal equipment, and a data transmission platform consisting of a communication network, the communication equipment, the server and a human-computer interaction terminal; each server covers a plurality of centralized controllers, each centralized controller receives data information sent by a plurality of intelligent phase change switches in a distribution room where the centralized controller is located and uploads the received information to the server, and the server is connected with terminal equipment provided with a human-computer interaction terminal; the intelligent phase-change switch is divided into a switch with a wireless remote control function and a switch without the wireless remote control function, wherein the switch with the wireless remote control function is arranged at a position near a distribution transformer, and the switch without the wireless remote control function is arranged at the tail end of a distribution line;
the data transmission network of each area consists of an integrated controller and a plurality of intelligent phase change switches, wherein the integrated controller is installed at the outlet side of the distribution transformer of the area and is used for communicating the intelligent phase change switches with the server;
control mode 1: the intelligent phase change switch installed near the distribution transformer of the distribution transformer area has a wireless remote control function and is controlled by an integrated controller in the distribution transformer area, the intelligent phase change switch transmits acquired load information to the integrated controller through a wireless communication network, the integrated controller comprehensively calculates and judges a phase change scheme of the next step according to three-phase current data of an output side of the distribution transformer area, and the three-phase current of the output side of the distribution transformer area is in a set threshold range by adjusting load distribution of the phase change switch near the distribution transformer area; control mode 2: the intelligent phase change switch at the tail end of the line branch of the distribution room has a self-adjusting function, and can automatically determine a phase change scheme according to the three-phase voltage, the phase angle and the power factor of the access point, so that the unbalance degree of the three-phase voltage of the access point is controlled within a set threshold range; the two control modes are carried out simultaneously and do not interfere with each other.
2. The hybrid control method for adjusting three-phase imbalance of a distribution substation of claim 1, wherein: the terminal equipment is a PC computer terminal or a smart phone terminal with a corresponding human-computer interaction interface, the PC computer terminal and the server are communicated through Ethernet or a wireless network, and the smart phone terminal and the server are communicated through GPRS.
3. The hybrid control method for adjusting three-phase imbalance of a distribution substation of claim 1, wherein: the communication network comprises an LORA local area network which is connected with the intelligent phase change switch and the centralized controller in the transformer area, and a GPRS network which is connected between the centralized controller and the main server in each transformer area.
4. The hybrid control method for adjusting three-phase imbalance of a distribution substation of claim 1, wherein: the intelligent phase-change switch is used for feeding wires in a three-phase four-wire mode and is connected to a main line or each branch line of the power supply of the transformer area.
5. The hybrid control method for adjusting three-phase imbalance of a distribution substation according to claim 1, wherein: the intelligent commutation switch is provided with an intelligent switch central processing unit, and the intelligent switch central processing unit is connected with a display module, an electric energy acquisition chip, a communication module, a clock storage module, a power module, an electric energy pulse acquisition module, a commutation mechanism and a key module.
6. The hybrid control method for adjusting three-phase imbalance of a distribution substation of claim 5, wherein: the communication module is one of carrier communication, wireless network, GPRS and 485/232 communication.
7. The hybrid control method for adjusting three-phase imbalance of a distribution substation according to claim 1, wherein: the centralized controller is arranged on the output side of the distribution transformer, and is used for collecting three-phase voltage, three-phase current, a phase angle and a power factor output by the distribution transformer and calculating the unbalance degree of the three-phase voltage and the unbalance degree of the three-phase current; meanwhile, the centralized controller receives relevant information from the intelligent phase change switch through a wireless communication network, obtains a phase change scheme of a next phase change switch through the operation of a system of the centralized controller according to the received information, and sends an instruction to the corresponding intelligent phase change switch to enable the intelligent phase change switch to make a specified phase change action; or the centralized controller realizes the phase change action of the specific intelligent phase change switch by forwarding the control instruction from the server.
8. The hybrid control method for adjusting three-phase imbalance of a distribution substation according to claim 1, wherein: and the terminal equipment is provided with a human-computer interaction interface, the human-computer interaction interface is used for inquiring the electricity consumption information, the power grid operation state information and the operation information of the intelligent metering box of all controlled transformer areas, and the intelligent phase change switch is remotely controlled through the human-computer interaction interface to realize various established actions.
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| CN109995058A (en) * | 2019-03-27 | 2019-07-09 | 国网青海省电力公司黄化供电公司 | A kind of device and its workflow of the improvement three-phase imbalance for low voltage electric network |
| CN110133391A (en) * | 2019-05-14 | 2019-08-16 | 珠海万力达电气自动化有限公司 | The monitoring method and monitoring system of a kind of electric system platform area three-phase imbalance |
| CN111146790B (en) * | 2020-01-03 | 2021-10-12 | 深圳供电局有限公司 | Commutation switch control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684213A (en) * | 2012-06-08 | 2012-09-19 | 平阴县供电公司 | Low-voltage three-phase load unbalance automatic regulation system |
| CN104198807A (en) * | 2014-07-31 | 2014-12-10 | 贾智雪 | Intelligent electric meter capable of automatically balancing three-phase loads |
| CN105207237A (en) * | 2015-09-22 | 2015-12-30 | 国网电网公司 | Distribution network three-phase load unbalance adjusting control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3863123B2 (en) * | 2003-04-04 | 2006-12-27 | 三菱電機株式会社 | 3-phase circuit load unbalance elimination control system |
| CN102435869B (en) * | 2011-08-26 | 2014-03-05 | 东北大学 | Experimental device for automatic regulation and compensation of three-phase unbalanced load and control method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684213A (en) * | 2012-06-08 | 2012-09-19 | 平阴县供电公司 | Low-voltage three-phase load unbalance automatic regulation system |
| CN104198807A (en) * | 2014-07-31 | 2014-12-10 | 贾智雪 | Intelligent electric meter capable of automatically balancing three-phase loads |
| CN105207237A (en) * | 2015-09-22 | 2015-12-30 | 国网电网公司 | Distribution network three-phase load unbalance adjusting control system |
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