CN112531779A - Multi-area power grid connection method - Google Patents
Multi-area power grid connection method Download PDFInfo
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- CN112531779A CN112531779A CN202011418583.1A CN202011418583A CN112531779A CN 112531779 A CN112531779 A CN 112531779A CN 202011418583 A CN202011418583 A CN 202011418583A CN 112531779 A CN112531779 A CN 112531779A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000005684 electric field Effects 0.000 claims abstract description 24
- 238000010248 power generation Methods 0.000 claims description 33
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000005286 illumination Methods 0.000 claims description 8
- 230000009466 transformation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a multi-region power grid wiring method which comprises a power supply region, a variable electric field, a basic branch, a secondary branch and a main transmission circuit, wherein the power supply region is connected with the power supply region; the power supply area is positioned at the tail end of the basic branch; the variable electric field is positioned at the joint of the basic branch and the secondary branch and the joint of the secondary branch and the main power transmission circuit; through carrying out effectual sub-network allotment in the aspect of basic branch road for more effective combination appears in holistic circuit transmission, reduces because of transmission and the excessive loss of transformer process, has avoided then that original power supply volume is low when crossing, makes the electric quantity of being transmitted out by the variable electric field low problem because of self transmission and transformer loss, then makes the optimization of whole transmission of electricity framework.
Description
Technical Field
The invention relates to the technical field of circuit wiring structures, in particular to a wiring method of a multi-region power grid.
Background
The multi-energy development electricity generation, be based on current development situation, and the Xinjiang district is under its geographical condition, be applicable to photovoltaic power generation and wind power generation, and these two kinds of power generation mode majority are restrainted in the weather device, then lead to holistic power generation mode unstable, then lead to the variable electric field's that same power supply area can be connected actual load can't obtain guaranteeing, then make the wasting of resources appear, simultaneously because the power supply volume problem in power supply area, make the loss of transformer increase, can't guarantee effectual transformer supply, for this reason we propose multizone electric wire netting wiring method.
Disclosure of Invention
The present invention is directed to a multi-area power grid connection method, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the multi-region power grid wiring method comprises a power supply region, a variable electric field, a basic branch, a secondary branch and a main transmission circuit:
the power supply area is positioned at the tail end of the basic branch;
the variable electric field is positioned at the joint of the basic branch and the secondary branch and the joint of the secondary branch and the main power transmission circuit;
the method comprises the following steps:
the method comprises the following steps: calculating an upper limit and a lower limit of a power supply amount of the power supply device based on the existing power supply area;
step two: determining a current power supply connecting line based on the obtained upper limit and the lower limit of the current power supply amount;
step three: laying out two power transmission lines in the same power supply area;
step four: different power supply lines based on each power supply area are connected with different variable electric fields;
step five: the variable electric field positioned at the joint of the basic branch and the secondary branch calculates the input electric quantity of the currently connected basic branch, and performs effective proportion allocation on the grid-connected power transformation facility;
step six: and inputting the electric quantity lower than the design threshold, and switching off the power supply through the relay equipment to re-allocate the grid connection of the basic branch.
Preferably, the calculation method in the step one is based on the existing geographic conditions, the number of power generation equipment and the rated power generation load of the power generation equipment:
preferably, the effective illumination value and the wind speed value are calculated based on the geographic condition, the effective power generation value is calculated through the effective illumination value and the wind speed value, when the effective power generation value obtained through calculation is larger than the rated power generation load, the maximum power generation value is the rated power generation value, and the upper limit and the lower limit of the power supply quantity are obtained through multiplication of the number of the power generation devices and the effective power generation value obtained through calculation.
Preferably, the selection mode of the power supply line in the second step is based on the lowest value of the access of the variable electric field connected with the two branches to perform load sharing access, and then effective allocation is performed, and the relative transmission distance between the two access power plants is relatively short.
Preferably, the power supply area is provided with a relay device, and the relay device judges the current power supply amount based on a control system to perform line selection operation.
Preferably, the basic branches are connected with the variable electric field at the upper end of the circuit in a cross mode, and the secondary branches are connected with the main transmission circuit in a non-cross mode.
Compared with the prior art, the invention has the beneficial effects that: through carrying out effectual sub-network allotment in the aspect of basic branch road for more effective combination appears in holistic circuit transmission, reduces because of transmission and the excessive loss of transformer process, has avoided then that original power supply volume is low when crossing, makes the electric quantity of being transmitted out by the variable electric field low problem because of self transmission and transformer loss, then makes the optimization of whole transmission of electricity framework.
Drawings
FIG. 1 is a layout framework of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, the present invention provides a technical solution: the multi-region power grid wiring method comprises a power supply region, a variable electric field, a basic branch, a secondary branch and a main transmission circuit:
the power supply area is positioned at the tail end of the basic branch;
the variable electric field is positioned at the joint of the basic branch and the secondary branch and the joint of the secondary branch and the main power transmission circuit;
the method comprises the following steps:
the method comprises the following steps: calculating an upper limit and a lower limit of a power supply amount of the power supply device based on the existing power supply area;
step two: determining a current power supply connecting line based on the obtained upper limit and the lower limit of the current power supply amount;
step three: laying out two power transmission lines in the same power supply area;
step four: different power supply lines based on each power supply area are connected with different variable electric fields;
step five: the variable electric field positioned at the joint of the basic branch and the secondary branch calculates the input electric quantity of the currently connected basic branch, and performs effective proportion allocation on the grid-connected power transformation facility;
step six: and inputting the electric quantity lower than the design threshold, and switching off the power supply through the relay equipment to re-allocate the grid connection of the basic branch.
Through the scheme design for power supply region, basic branch road, second grade branch road and total transmission circuit carry out the overall arrangement, and the power supply region supplies power through modes such as photovoltaic power generation, wind power generation, transmits to the electric field of becoming through basic branch road, integrates the transformer, then integrates and transmits to total transmission circuit, guarantees effectual transmission of electricity quality.
Specifically, the calculation method in the first step is based on the existing geographical conditions, the number of power generation equipment, and the rated power generation load of the power generation equipment:
and calculating an effective illumination value and a wind speed value based on the geographic condition, calculating an effective power generation value through the effective illumination value and the wind speed value, when the effective power generation value obtained through calculation is larger than the rated power generation load, taking the maximum power generation value as the rated power generation value, and obtaining the upper limit and the lower limit of the power supply amount through multiplying the number of the power generation equipment by the effective power generation value obtained through calculation.
The effective illumination value and the wind speed value are main influence factors on the current generating capacity, meanwhile, the rated generating load of the existing generating equipment is counted, the effective generating value is calculated through the effective illumination value and the wind speed value, and the rated generating value is the upper limit of the power supply capacity.
Specifically, in the selection mode of the power supply line in the step two, the load sharing access is performed based on the lowest value of the access of the variable electric field connected with the two branches, then the effective allocation is performed, and the relative transmission distance between the two access power plants is relatively short.
Through the mode of allotment for the circuit of whole is more effective to be connected, reduces because of the influence of power supply volume.
Specifically, a relay device is arranged in the power supply area, and the relay device judges the current power supply amount based on a control system to perform line selection operation.
Specifically, the basic branches are connected with the variable electric field at the upper circuit end in a cross mode, and the secondary branches are connected with the main transmission circuit in a non-cross mode.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The multi-region power grid wiring method comprises a power supply region, a variable electric field, a basic branch, a secondary branch and a main transmission circuit:
the power supply area is positioned at the tail end of the basic branch;
the variable electric field is positioned at the joint of the basic branch and the secondary branch and the joint of the secondary branch and the main power transmission circuit;
the method is characterized by comprising the following steps:
the method comprises the following steps: calculating an upper limit and a lower limit of a power supply amount of the power supply device based on the existing power supply area;
step two: determining a current power supply connecting line based on the obtained upper limit and the lower limit of the current power supply amount;
step three: laying out two power transmission lines in the same power supply area;
step four: different power supply lines based on each power supply area are connected with different variable electric fields;
step five: the variable electric field positioned at the joint of the basic branch and the secondary branch calculates the input electric quantity of the currently connected basic branch, and performs effective proportion allocation on the grid-connected power transformation facility;
step six: and inputting the electric quantity lower than the design threshold, and switching off the power supply through the relay equipment to re-allocate the grid connection of the basic branch.
2. The multi-region power grid connection method based on claim 1, characterized in that: the calculation method in the first step is based on the existing geographic conditions, the number of the generating equipment and the rated generating load of the generating equipment:
and calculating an effective illumination value and a wind speed value based on the geographic condition, calculating an effective power generation value through the effective illumination value and the wind speed value, when the effective power generation value obtained through calculation is larger than the rated power generation load, taking the maximum power generation value as the rated power generation value, and obtaining the upper limit and the lower limit of the power supply amount through multiplying the number of the power generation equipment by the effective power generation value obtained through calculation.
3. The multi-zone grid connection method of claim 1, wherein: and in the second step, the selection mode of the power supply circuit is that the load sharing access is carried out based on the lowest value of the access of the variable electric field connected with the two branches, then the effective allocation is carried out, and the relative transmission distance of the two access power plants is relatively short.
4. The multi-zone grid connection method of claim 1, wherein: and the power supply area is provided with relay equipment, and the relay equipment judges the current power supply amount based on a control system to perform circuit selection operation.
5. The multi-zone grid connection method of claim 1, wherein: the basic branches are mutually crossed and connected with the variable electric field at the upper circuit end, and the secondary branches are not crossed and connected with the main transmission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418583.1A CN112531779B (en) | 2020-12-07 | 2020-12-07 | Multi-region power grid wiring method |
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| CN202011418583.1A CN112531779B (en) | 2020-12-07 | 2020-12-07 | Multi-region power grid wiring method |
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| CN112531779B CN112531779B (en) | 2024-01-23 |
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