CN112101618A - Power grid planning method for city planning new parcel - Google Patents
Power grid planning method for city planning new parcel Download PDFInfo
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06315—Needs-based resource requirements planning or analysis
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0637—Strategic management or analysis, e.g. setting a goal or target of an organisation; Planning actions based on goals; Analysis or evaluation of effectiveness of goals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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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
- 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
Abstract
The invention relates to the technical field of power distribution, and discloses a power grid planning method for planning a new district in a city, wherein the new district is expanded into a belt around an old district and is provided with a plurality of functional areas distributed along the length direction of the belt, each functional area is provided with a plurality of developed/developing/undeveloped plots, and the power grid planning method comprises the following steps: s1, analyzing the capacity, load rate and main transformer N-1 checking condition of the new district or the original high-voltage transformer substations around the new district; s2, predicting the long-range view load of the new parcel; and S3, planning new construction or transformation projects of the high-voltage transformer substation according to the analysis of the step S1 and the prediction of the step S2, and arranging the new high-voltage transformer substation in the middle of the new zone in the width direction of the belt. The invention can be used for selecting the site of a newly-built high-voltage transformer substation, and particularly, the site is arranged in the middle of a new film area along the width direction of a belt, so that the balance between the approach to a load center and the maintenance of a proper distance with an original high-voltage transformer substation is facilitated, and the inter-station communication is facilitated.
Description
Technical Field
The invention relates to the technical field of power distribution, in particular to a power grid planning method for a strip-shaped new slice area.
Background
The urban planning is to standardize urban development construction, study future development of cities, reasonably arrange cities and comprehensively arrange comprehensive deployment of various urban engineering constructions, is a blueprint of urban development in a certain period, is an important component of urban management, is a basis of urban construction and management, and is also a precondition for three-stage management of urban planning, urban construction and urban operation.
The urban planning is based on the premise of developing eye sight, scientific demonstration and expert decision, and the urban economic structure, space structure and social structure development is planned, and the urban district planning is often included. The city management system has the important function of guiding and standardizing city construction, is the early work of city comprehensive management and is a tap of city management. The complex system characteristics of cities determine that city planning is a complex continuous decision-making process which is continuously adjusted, continuously revised, continuously improved and perfected along with the development and the operation condition of the cities.
The urban construction is not one kick, the urban construction determines the coexisting appearance of new and old plate areas in the city progressively, new planned plate areas are inevitably generated along with the saturation of all aspects of the old plate areas, the plate areas are formed by outward expansion of the old plate areas, strip-shaped new plate areas arranged around the old plate areas are formed, the original power distribution network is built based on the requirements of the old plate areas, the original distribution transformation overload or overload is caused along with the planning construction of the new plate areas and the increase of natural load, and therefore the power department is required to plan a power distribution system for the new plate areas on the basis of the original power distribution network to meet the urban development requirements. However, with the development of economic society and the introduction of smart city concepts, people have planned new districts on different days.
The smart city is often crossed with the regional development concepts such as digital cities, perception cities, wireless cities, smart cities, ecological cities and low-carbon cities, and even is mixed with the industry informatization concepts such as electronic government affairs, intelligent transportation and smart power grids. The interpretation of the concept of the smart city is also always emphasized, some views consider that the key is technical application, some views consider that the key is network construction, some views consider that the key is human participation, some views consider that the key is smart effect, and some advanced cities for city information construction emphasize human-oriented and sustainable innovation. In general, wisdom is not just intelligence. The smart city is not only another way of the smart city, or intelligent application of information technology, but also includes the connotations of human intelligence participation, human-oriented, sustainable development and the like. The application types of the smart city are highly diversified and differentiated, and the smart city becomes a means for improving the competitiveness of a city, however, no matter how the city is positioned, in order to facilitate the city management to realize sustainable development of economy, humanity, ecology and the like, when the city planning is carried out on a strip-shaped new parcel, various aspects of factors are integrated and planned into a plurality of functional parcels, as the new parcel usually takes the shape of a strip and surrounds the periphery of an old parcel, the functional parcels are usually arranged along the length direction of the strip, different functions mean different load conditions, new challenges are provided for intelligent power distribution, and a strip-shaped new parcel power distribution planning method meeting the development planning requirements of the smart city is provided.
Disclosure of Invention
In view of this, the present invention provides a power grid planning method for city planning of a new segment to overcome at least one of the above disadvantages in the prior art, which is adapted to the development needs of smart cities, facilitates inter-station communication, and improves power supply reliability.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for planning a power grid in a city to plan a new parcel, the new parcel being expanded around an old parcel to form a strip, the new parcel having a plurality of functional parcels distributed along the length of the strip, each functional parcel having a plurality of developed/developing/undeveloped parcels, the method comprising the steps of:
s1, analyzing the capacity, load rate and main transformer N-1 checking condition of the new district or the original high-voltage transformer substations around the new district;
s2, predicting the long-range view load of the new parcel;
and S3, planning new construction or transformation projects of the high-voltage transformer substation according to the analysis in the step S1 and the prediction in the step S2, and arranging the new high-voltage transformer substation in the middle of the new zone in the width direction of the belt.
Wherein, the expansion of the new area around the old area into a belt means that the new area appears as a belt winding around the old area when viewed from the map. The belt is a long strip with greatly different length and width; the longitudinal direction of the tape refers to a direction in which the long sides of the tape extend, which may be linear, but in most cases is curved, corresponding to the outer periphery of the old piece region, which may be said to be the circumferential direction of the old piece region; the width direction of the tape refers to a direction in which a short side of the tape is located, which is perpendicular to the length direction of the tape, and can be said to be a radial direction of the old sheet area.
The invention analyzes and summarizes the current situation of the power grid in the new area and the original high-voltage transformer substations around the new area to fully utilize the existing power grid resources in subsequent planning, solve the current situation problem, meet the power consumption requirement and perfect the future grid structure. The accurate load prediction provides scientific decision basis for the reasonable distribution of power supplies and transformer substations, the timely power grid construction, the optimal investment time and the maximum economic benefit and social benefit, thereby providing guarantee for the safe, economic and reliable operation of the power grid. By predicting the future power demand of the planning area, the 110kV and 10kV transformation capacity required by the planning area, the number of 10kV public switch rooms, power distribution rooms and the like required by the area plot and the number of 10kV power supply feeder line loops are calculated, and the number of the switch rooms, the number of the power distribution rooms, the building area, the number of the 10kV power supply feeder line loops, the laying mode and the laying path are pre-controlled, so that the power grid construction of the planning area is guided. And (4) planning new construction and modification projects of the high-voltage transformer substation through the analysis in the step S1 and the prediction in the step S2, carrying out capacity-increasing modification or extension on the heavy-load/overload high-voltage transformer substation, and building the high-voltage transformer substation in a functional area with high distant view load and sparse original high-voltage transformer substation. For the site selection of the newly-built high-voltage transformer substation, in addition to meeting the basic principle, the invention provides that the newly-built high-voltage transformer substation is selected in the middle of the new film area along the width direction of the belt, so that a balance can be found between the position close to a load center and the position keeping a proper distance with the original high-voltage transformer substation, the inter-station contact with the existing high-voltage transformer substation is facilitated, even if the belt-shaped new film area continuously extends out of a future film area along the length direction of the belt or continuously extends out of the future film area along the width direction of the belt, the inter-station contact between the newly-built high-voltage transformer substation and the high-voltage transformer substation in the future film area can be favorably established, and therefore, each high-voltage.
The functional areas are distributed along the length direction of the belt to jointly form the new area, and necessarily the functional areas are located at the end part of the belt-shaped new area, namely the functional areas comprise end functional areas located at two ends of the belt and a middle functional area located in the middle section of the belt, in order to facilitate the new area to continue to extend and expand along the length direction of the belt, preferably, in step S3, except for a middle zone arranged in the width direction of the belt, a newly-built high-voltage transformer substation planned in the end functional area is arranged on the edge of the end part of the belt, so that power is supplied to an area formed by expanding on the basis of the new area or is interconnected with the newly-built high-voltage transformer substation in the area continuing to expand in the future, and the power supply reliability is improved.
In order to improve the accuracy of the prospective load prediction, in step S2, the prospective load of the developed/developing parcel is predicted according to the actual installation capacity, and the prospective load of the undeveloped parcel is predicted in the following two ways.
In the first method, the perspective load of the undeveloped land is predicted according to the average load density of the functional area. Specifically, the perspective load prediction of the undeveloped land parcel is carried out by adopting the average load density of the land parcel which accords with the planning property of the functional area and is developed/under development based on the functional area where the land parcel is located: installing the capacity G according to the actual condition for the developed/developing land block which is in accordance with the type of the functional areaiAnd effective land area PiThe block load density is calculated according to the ratio, and the average value of the block load densities in the same functional area is taken as the average load density of the functional area. And then the obtained average load density and the effective land area Q of the undeveloped landiThe product of the two to calculate the long-range load L of the undeveloped land massbI.e. by
In the second mode, the perspective load of the undeveloped land blocks is predicted by investigating the load density of the same type of land blocks. For the perspective load of the undeveloped land parcel, the method is specifically predicted by the following mathematical model:
(1) modeling according to land use areas of traffic land, road square land, greening land, water areas and other non-urban construction land:
wherein m is the number of land use classes, lambdaiIs the load density of the i-th land, SiThe land area is the using area of the i-th land;
(2) modeling according to the known conditions of land use area and volume ratio indexes:
wherein n is the number of land use classes, RiIs a volume fraction index of the i-th land, CiIs an electricity utilization index, X, of the unit building area of the i-th landiFor the i-th land power demand coefficient, SiThe land area is the using area of the i-th land;
from the above calculations: long-term load of undeveloped plot L ═ L (Lt)1+Lt2) X T, wherein: t is a coefficient representing the comprehensive power utilization and the simultaneous utilization of the power of the planned land.
In step S2, the forecasted long-term load is verified using the electricity consumption per person index. The current per-capita electricity index of the planning area is analyzed and compared to obtain a predicted value of the per-capita electricity of the planning area, the predicted value of the per-capita electricity load is obtained by combining the maximum load utilization hours, and finally the predicted value of the total load of the planning area is obtained according to the planning population scale of the planning area. The calculation formula is as follows: l iscp＝Acp/Tmax，L＝LcpxN, wherein LcpPredicting the electrical load per capita in a certain area, AcpIs the per-capita electricity consumption, T, of the areamaxThe number of hours of maximum load utilization; l is the total load predicted value of the area, and N is the planned population size of the area.
In step S3, planning a photovoltaic project in the functional area with exhibitions and manufacturing industry according to the analysis of step S1 and the prediction of step S2 is further included. Specifically, the photovoltaic project comprises a photovoltaic panel arranged at the top of the exhibition hall, a photovoltaic power supply firstly supplies illumination for the exhibition hall and the manufacturing user side, the photovoltaic power supply is supplemented by a power grid when the electric quantity is insufficient, and the photovoltaic power supply is connected to the internet through an inverter when the electric quantity is redundant. The photovoltaic project further comprises an energy storage system configured on the manufacturing user side, when the photovoltaic power supply is redundant, the photovoltaic power supply is absorbed and stored by the energy storage system, and when the energy storage system is full of electricity, the photovoltaic power supply is connected to the Internet through an inverter. The energy storage system can store redundant electric quantity of photovoltaic power generation, and can also store electric energy from a power grid, so that the effects of peak clipping, valley filling and power supply reliability guarantee are achieved.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, through the analysis in the step S1 and the prediction and planning of the step S2, the new construction and the reconstruction project of the high-voltage transformer substation are planned, the capacity-increasing reconstruction or the extension of the heavy-load/overload high-voltage transformer substation is carried out, and the high-voltage transformer substation is newly constructed in a functional area with high distant view load and rare original high-voltage transformer substation. For the site selection of the newly-built high-voltage transformer substation, in addition to meeting the basic principle, the invention provides that the newly-built high-voltage transformer substation is selected in the middle of the new film area along the width direction of the belt, so that a balance can be found between the position close to a load center and the position keeping a proper distance with the original high-voltage transformer substation, the inter-station contact with the existing high-voltage transformer substation is facilitated, even if the belt-shaped new film area continuously extends out of a future film area along the length direction of the belt or continuously extends out of the future film area along the width direction of the belt, the inter-station contact between the newly-built high-voltage transformer substation and the high-voltage transformer substation in the future film area can be favorably established, and therefore, each high-voltage. The high-voltage transformer substations newly built in the functional areas at the end parts are preferably arranged on the edges of the end parts of the strip except for the middle zone in the width direction of the strip, so that power is supplied to the area formed by expanding on the basis of a new zone or is interconnected with the newly built high-voltage transformer substations in the area continuously expanded in the future, and the power supply reliability is improved.
Drawings
Fig. 1 is a schematic view of a new band-shaped patch area.
FIG. 2 is a schematic diagram of a photovoltaic project in a functional area with exhibitions and manufacturing.
Detailed Description
The drawings are for illustration purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention. The present invention will be described in further detail with reference to specific examples.
Example 1
A power grid planning method for planning a new parcel in a city, as shown in fig. 1, the new parcel being expanded into a belt around an old parcel, and having a plurality of functional parcels (a/B/C/D/E) distributed along a length direction of the belt, each functional parcel having a plurality of developed/developing/undeveloped parcels, the power grid planning method comprising the steps of:
s1, analyzing the capacity, load rate and main transformer N-1 checking condition of the new district or the original high-voltage transformer substations around the new district;
s2, predicting the long-range view load of the new parcel;
and S3, planning new construction or transformation projects of the high-voltage transformer substation according to the analysis in the step S1 and the prediction in the step S2, and arranging the new high-voltage transformer substation in the middle of the new zone in the width direction of the belt.
Wherein, the expansion of the new area around the old area into a belt means that the new area appears as a belt winding around the old area when viewed from the map. The belt is a long strip with greatly different length and width; the longitudinal direction of the tape refers to the direction in which the long sides of the tape extend, as indicated by a in fig. 1, which may be straight, but in most cases is curved, corresponding to the outer periphery of the old piece region, so to speak, the circumferential direction of the old piece region; the width direction of the tape refers to the direction in which the short side of the tape is located, as indicated by b in fig. 1, which is perpendicular to the length direction of the tape, so to speak, the radial direction of the old patch.
The invention analyzes and summarizes the current situation of the power grid in the new area and the original high-voltage transformer substations around the new area to fully utilize the existing power grid resources in subsequent planning, solve the current situation problem, meet the power consumption requirement and perfect the future grid structure. The accurate load prediction provides scientific decision basis for the reasonable distribution of power supplies and transformer substations, the timely power grid construction, the optimal investment time and the maximum economic benefit and social benefit, thereby providing guarantee for the safe, economic and reliable operation of the power grid. By predicting the future power demand of the planning area, the 110kV and 10kV transformation capacity required by the planning area, the number of 10kV public switch rooms, power distribution rooms and the like required by the area plot and the number of 10kV power supply feeder line loops are calculated, and the number of the switch rooms, the number of the power distribution rooms, the building area, the number of the 10kV power supply feeder line loops, the laying mode and the laying path are pre-controlled, so that the power grid construction of the planning area is guided. And (4) planning new construction and modification projects of the high-voltage transformer substation through the analysis in the step S1 and the prediction in the step S2, carrying out capacity-increasing modification or extension on the heavy-load/overload high-voltage transformer substation, and building the high-voltage transformer substation in a functional area with high distant view load and rare original high-voltage transformer substation. For the site selection of the newly-built high-voltage transformer substation, in addition to meeting the basic principle, the invention provides that the newly-built high-voltage transformer substation is selected in the middle of the new film area along the width direction of the belt, so that a balance can be found between the position close to a load center and the position keeping a proper distance with the original high-voltage transformer substation, the inter-station contact with the existing high-voltage transformer substation is facilitated, even if the belt-shaped new film area continuously extends out of a future film area along the length direction of the belt or continuously extends out of the future film area along the width direction of the belt, the inter-station contact between the newly-built high-voltage transformer substation and the high-voltage transformer substation in the future film area can be favorably established, and therefore, each high-voltage.
In order to improve the accuracy of the prospective load prediction, in step S2, the prospective load of the developed/developing parcel is predicted according to the actual installation capacity, and the prospective load of the undeveloped parcel is predicted according to the average load density of the functional area. Specifically, the perspective load prediction of the undeveloped land is adopted according to the developed/developing condition of the functional area based on the undeveloped landAnd predicting the average load density of the plot with the planning property of the functional area: installing the capacity G according to the actual condition for the developed/developing land block which is in accordance with the type of the functional areaiAnd effective land area PiThe block load density is calculated according to the ratio, and the average value of the block load densities in the same functional area is taken as the average load density of the functional area. And then the obtained average load density and the effective land area Q of the undeveloped landiThe product of the two to calculate the long-range load L of the undeveloped land massbI.e. by
In step S2, the forecasted long-term load is verified using the electricity consumption per person index. The current per-capita electricity index of the planning area is analyzed and compared to obtain a predicted value of the per-capita electricity of the planning area, the predicted value of the per-capita electricity load is obtained by combining the maximum load utilization hours, and finally the predicted value of the total load of the planning area is obtained according to the planning population scale of the planning area. The calculation formula is as follows: l iscp＝Acp/Tmax，L＝LcpxN, wherein LcpPredicting the electrical load per capita in a certain area, AcpIs the per-capita electricity consumption, T, of the areamaxThe number of hours of maximum load utilization; l is the total load predicted value of the area, and N is the planned population size of the area.
The functional areas are distributed along the length direction of the belt to jointly form the new area, the functional areas are inevitably located at the end part of the belt-shaped new area, namely the functional areas comprise end functional areas located at two ends of the belt and a middle functional area located in the middle section of the belt, and in order to facilitate the new area to continue to extend and expand along the length direction of the belt, in step S3, except for the middle zone arranged in the width direction of the belt, a newly-built high-voltage transformer substation planned in the end functional area is arranged on the edge of the end part of the belt, so that power is supplied to an area formed by expansion on the basis of the new area or is interconnected with the newly-built high-voltage transformer substation in the area continuing to expand in the future, and the reliability of power supply is.
In step S3, planning a photovoltaic project in functional area a with exhibitions and manufacturing is further included according to the analysis of step S1 and the prediction of step S2. Specifically, as shown in fig. 2, the photovoltaic project includes configuring a photovoltaic panel on the top of the exhibition hall, the photovoltaic power supply firstly supplies lighting to the exhibition hall and the user side of the manufacturing industry, the power is supplemented by the power grid when the power is insufficient, and the power is on line through the inverter when the power is redundant. The photovoltaic project further comprises an energy storage system configured on the manufacturing user side, when the photovoltaic power supply is redundant, the photovoltaic power supply is absorbed and stored by the energy storage system, and when the energy storage system is full of electricity, the photovoltaic power supply is connected to the Internet through an inverter. The energy storage system can store redundant electric quantity of photovoltaic power generation, and can also store electric energy from a power grid, so that the effects of peak clipping, valley filling and power supply reliability guarantee are achieved.
Example 2
The present embodiment is different from embodiment 1 in that the prospective load of the undeveloped land is predicted in step S2.
In this embodiment, the perspective load of an undeveloped land parcel is predicted by investigating and researching the load density of the same type of land parcel, and specifically predicted by the following mathematical model:
(1) modeling according to land use areas of traffic land, road square land, greening land, water areas and other non-urban construction land:
wherein m is the number of land use classes, lambdaiIs the load density of the i-th land, SiThe land area is the using area of the i-th land;
(2) modeling according to the known conditions of land use area and volume ratio indexes:
wherein n is the number of land use classes, RiIs a volume fraction index of the i-th land, CiIs an electricity utilization index, X, of the unit building area of the i-th landiFor the i-th land power demand coefficient, SiThe land area is the using area of the i-th land;
from the above calculations: long-term load of undeveloped plot L ═ L (Lt)1+Lt2) X T, wherein: t is a planning plotThe electricity utilization is integrated and the electricity utilization coefficient is simultaneously increased.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for planning a power grid for a new district in a city, the new district being expanded around an old district into a belt and having a plurality of functional areas distributed along the length of the belt, each functional area having a plurality of developed/developing/undeveloped plots, the method comprising the steps of:
s1, analyzing the capacity, load rate and main transformer N-1 checking condition of the new parcel or the original transformer substations around the new parcel;
s2, predicting the long-range view load of the new parcel;
and S3, planning new construction or transformation projects of the high-voltage transformer substation according to the analysis in the step S1 and the prediction in the step S2, and arranging the new high-voltage transformer substation in the middle of the new zone in the width direction of the belt.
2. The method for planning a power grid for city planning of a new parcel as claimed in claim 1, wherein the functional parcels include end functional parcels located at both ends of the strip and middle functional parcels located at a middle section of the strip, and in step S3, a newly built high voltage substation planned in the end functional parcel is installed on an end edge of the strip.
3. The method for planning the power grid in a new city planning plot according to claim 1, wherein in step S2, the prospective load of the developed/developing plot is predicted according to the actual installation capacity, and the prospective load of the undeveloped plot is predicted according to the average load density of the functional area.
4. The power grid planning method for city planning of new parcel as claimed in claim 3, wherein in step S2, the load density of the developed/under-developed parcel is calculated according to the ratio of the actual installed capacity and the effective land area of the developed/under-developed parcel corresponding to the type of the functional district where the power grid planning is located, and the average load density of the functional district is calculated according to the average value of the load densities of the developed/under-developed parcels corresponding to the type of the functional district in the same functional district.
5. The method as claimed in claim 1, wherein in step S2, the prospective load of the developed/developing land parcel is predicted according to the actual loading capacity, and the prospective load of the undeveloped land parcel is predicted by investigating the load density of the same type land parcel.
6. The method for planning a power grid for a new urban area according to any one of claims 3 to 5, wherein in step S2, the forecast of the prospective load is verified by using the index of the average human power consumption.
7. The method for power grid planning in a new city planning district according to claim 1, wherein in step S2, according to the historical power utilization level of the upper level administrative area, in combination with the municipal construction propulsion plan and the user installation situation, the annual power utilization load is calculated by using the natural growth rate, and the recent load prediction result is obtained.
8. The method for planning the power grid of a city to plan a new parcel as claimed in claim 1, wherein step S3 further comprises planning the photovoltaic project in the functional area with exhibitions and manufacturing industry according to the analysis of step S1 and the prediction of step S2.
9. The method as claimed in claim 8, wherein the photovoltaic project includes a photovoltaic panel disposed on the top of the exhibition hall, the photovoltaic power supply first supplies lighting to the exhibition hall and the manufacturing users, the power is supplemented by the power grid when the power is insufficient, and the power is on line through the inverter when the power is redundant.
10. The method according to claim 9, wherein the photovoltaic project further comprises configuring an energy storage system at the manufacturing user side, wherein the energy storage system absorbs and stores electricity when the photovoltaic power supply is redundant, and the inverter is used for surfing the internet when the energy storage system is full.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802179.8A CN112101618A (en) | 2020-08-11 | 2020-08-11 | Power grid planning method for city planning new parcel |
| PCT/CN2021/088855 WO2022033069A1 (en) | 2020-08-11 | 2021-04-22 | Power grid planning method for planning new urban district |
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| CN113723719A (en) * | 2021-11-03 | 2021-11-30 | 国网北京市电力公司 | Distribution transformation-based near-intermediate load prediction method, device, equipment and medium |
| WO2022033069A1 (en) * | 2020-08-11 | 2022-02-17 | 广东顺德电力设计院有限公司 | Power grid planning method for planning new urban district |
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| CN114862047B (en) * | 2022-05-30 | 2023-02-03 | 杭州阳斯信息技术有限公司 | Year-by-year time sequence distribution method for power grid distant view grid frame construction |
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