CN111917139A - Method and system for determining blackable window period of main equipment of power grid - Google Patents
Method and system for determining blackable window period of main equipment of power grid Download PDFInfo
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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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
- H02J3/472—For selectively connecting the AC sources in a particular order, e.g. sequential, alternating or subsets of sources
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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
- G06Q10/20—Administration of product repair or maintenance
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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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- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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 a method and a system for determining a blackable window period of main equipment of a power grid, wherein the method comprises the following steps: a method for determining a blackable window period of a main device of a power grid is characterized by comprising the following steps: step 1: determining classification types of the classification of the functions of the power transmission and transformation equipment in the power grid according to the functions of the power transmission and transformation equipment; step 2: acquiring basic data corresponding to the classification type according to the classification type; and step 3: determining the blackable window period of the power transmission and transformation equipment according to the basic data; and 4, step 4: and outputting and displaying the blackable window period. The method is scientific and reasonable, can reduce the accompanying and stopping of the equipment and reduce the potential safety hazard of the power grid caused by maintenance.
Description
Technical Field
The invention belongs to the field of power systems and automation thereof, and particularly relates to a method and a system for determining a blackable window period of main equipment of a power grid.
Background
With the rapid development of an extra-high voltage power grid and the large-scale high-proportion grid connection of new energy, the structure of the power grid is more and more complex, and the arrangement difficulty of power failure of equipment is more and more large. The power failure planning arrangement not only relates to the safety of a power grid and the balance of electric power and electric quantity, but also influences the smooth implementation of extra-high voltage construction, municipal movement and transformation, railway construction and the realization of the strategic target of national clean energy consumption. The complexity of the power grid and the importance of the power failure of the equipment determine that the arrangement of the power failure plan must be comprehensively considered, scientifically and reasonably, and the mode of arranging the power failure plan by manual experience cannot adapt to the new situation of power grid development. In addition, with the development of a power grid, the power failure requirements are more and more, the power failure time of available equipment is very limited, it is very important to determine the available time of the power failure of the equipment and to arrange the power failure of the equipment scientifically, comprehensively and objectively as much as possible, and an advanced technical means is urgently needed to guide and standardize the arrangement of the power failure plan of the equipment. The blackout window period of the main equipment of the power grid is the time range within which the main equipment can safely blackout, and a basis is provided for compiling an efficient and reasonable maintenance plan through the calculation of the blackout window period. Repeated power failure can be reduced to the maximum extent, the multi-purpose efficiency of one-stop is improved, the accompanying and stopping of equipment is reduced, potential safety hazards of a power grid caused by maintenance are reduced, and the normal operation of the power grid is guaranteed. But the determination of the blackable window period of the current power grid is not scientific enough, the equipment accompanying and stopping condition is serious, and the potential safety hazard of the power grid caused by maintenance is large.
Disclosure of Invention
The invention mainly aims to overcome the defects and shortcomings of the prior art and provides a method and a system for determining the blackable window period of main equipment of a power grid.
According to one aspect of the present invention, the present invention provides a method for determining blackable window period of a main device of a power grid, the method including:
determining classification types of the classification of the functions of the power transmission and transformation equipment in the power grid according to the functions of the power transmission and transformation equipment;
acquiring basic data corresponding to the classification type according to the classification type;
and determining the blackable window period of the power transmission and transformation equipment according to the basic data.
Preferably, the method further comprises the step of outputting and displaying the blackable window period.
Preferably, the classification type of the utility classification includes at least one of: wind power delivery channel equipment, hydroelectric delivery channel equipment, photovoltaic delivery channel equipment, nuclear power delivery channel equipment, thermal power delivery channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota and feed supply load equipment.
Preferably, when the classification type is wind power output channel equipment, the basic data includes at least one of the following: a wind speed trend curve and a region load curve blocked by a channel within a preset age limit; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: determining the maximum time period of the algebraic difference between the load and the wind speed converted power in the whole year as a power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as the window period of available power failure.
Preferably, when the classification type is a hydroelectric power transmission passage apparatus, the basic data includes: a hydropower annual power generation power curve; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: and determining the water shortage period of the water and electricity as a blackable window period.
Preferably, when the classification type is a cross-region device and a device having an influence on cross-region channel capability, the basic data comprises: the annual load curve of the transmitting-end power grid, the annual load curve of the receiving-end power grid and the clean energy transmitting demand curve of the transmitting-end power grid; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: the period when the sending capacity is larger than the sending demand is a power failure window period 1; the minimum time period of the clean energy delivery demand curve of the delivery end power grid is a power failure window period 2; after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3; and determining the overlapping time periods of the power failure window periods 1, 2 and 3 as the final blackable window period.
According to another aspect of the present invention, the present invention further provides a system for determining blackout window period of a main device of a power grid, the system comprising:
the determination module is used for determining classification types of the power transmission and transformation equipment classified according to the power transmission and transformation equipment;
the acquisition module is used for acquiring basic data corresponding to the classification type according to the classification type;
and the judging module is used for determining the blackable window period of the power transmission and transformation equipment according to the basic data.
Preferably, the method further comprises the following steps: and the output module is used for outputting and displaying the blackable window period.
Preferably, the classification type of the utility classification includes at least one of: wind power delivery channel equipment, hydroelectric delivery channel equipment, photovoltaic delivery channel equipment, nuclear power delivery channel equipment, thermal power delivery channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota and feed supply load equipment.
Preferably, when the classification type is wind power output channel equipment, the basic data includes at least one of the following: a wind speed trend curve and a region load curve blocked by a channel within a preset age limit; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: if a load exists in the blocking area, determining the period with the maximum algebraic difference between the load and the wind speed converted power in the whole year as a power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as the window period of available power failure.
Preferably, when the classification type is a hydroelectric power transmission passage apparatus, the basic data includes: a hydropower annual power generation power curve; the power failure window period determining step comprises the following steps: and determining the water shortage period of the water and electricity as a blackable window period.
Preferably, when the classification type is a cross-region device and a device having an influence on cross-region channel capability, the basic data comprises: the annual load curve of the transmitting-end power grid, the annual load curve of the receiving-end power grid and the clean energy transmitting demand curve of the transmitting-end power grid; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: the period when the sending capacity is larger than the sending demand is a power failure window period 1; the minimum time period of the clean energy delivery demand curve of the delivery end power grid is a power failure window period 2; after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3; and determining the overlapping time periods of the power failure window periods 1, 2 and 3 as the final blackable window period.
Has the advantages that: the method is scientific and reasonable, can reduce the accompanying and stopping of the equipment and reduce the potential safety hazard of the power grid caused by maintenance.
The features and advantages of the present invention will become apparent by reference to the following drawings and detailed description of specific embodiments of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a method for determining blackout window period of a main device of a power grid;
FIGS. 2-8 are schematic flow diagrams illustrating the determination of blackable window periods based on classification type;
FIG. 9 is a schematic diagram illustrating a determination of a blackout window period;
fig. 10 is a schematic structural diagram of a system for determining blackout window period of a main device of a power grid.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Fig. 1 is a schematic diagram of a method for determining a blackout window period of a main device of a power grid. As shown in fig. 1, the present invention provides a method for determining a blackable window period of a main device of a power grid, where the method includes:
step 1: determining classification types of the classification of the functions of the power transmission and transformation equipment in the power grid according to the functions of the power transmission and transformation equipment;
in this step, the classification types of the function classification include: the system comprises wind power output channel equipment, hydroelectric power output channel equipment, photovoltaic output channel equipment, nuclear power output channel equipment, thermal power output channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota, and feed load equipment, wherein the feed load equipment comprises feed load equipment of a grid-connected power plant and feed load equipment of a non-grid-connected power plant.
Step 2: acquiring basic data corresponding to the classification type according to the classification type;
in this step, the basic data is generally a wind speed trend curve, a generated power curve, an area load curve, an annual load curve, a demand curve, and the like.
And step 3: determining the blackable window period of the power transmission and transformation equipment according to the basic data;
in this step, when the power failure window periods overlap, the following processing is performed:
(1) when the common influence is generated, the power failure window period of the trans-regional equipment and the equipment influencing the trans-regional channel capacity is not used as the power failure window period of the trans-provincial equipment.
(2) When optimization targets such as power grid safety, power balance and clean energy consumption conflict and the power failure window period cannot be determined, accepting or rejecting according to the priority sequence of the power grid safety, the power balance and the clean energy consumption, namely firstly ensuring safety, then ensuring supply and finally ensuring the clean energy consumption.
(3) And the time interval of reverse constraint on the power transmission requirements of trans-regional trans-provincial equipment in the power transmission and receiving end power grid equipment overhaul is not used as the power failure window period of the receiving end power grid equipment.
(4) When power plant grid-connected equipment (lines, main transformers, buses and series reactors) are overhauled to influence the power generation capacity, the influence of the power generation capacity reduction on local and whole grid power balance and trading contracts is evaluated; when the special wiring modes such as single-loop, double-loop, same-tower multi-loop radiation and the like do not meet the requirements, the power supply can be ensured through load reverse supply and low-voltage backup automatic switching, and a demand side management measure can be taken when necessary.
(5) The power transmission and transformation equipment in the power supply path of the large user directly transacting both sides needs to keep the power failure window period as consistent as possible.
(6) Besides the window period of the same tower multi-loop line according to the single loop line, the window period of the same tower multi-loop line should also be given according to the multi-loop line simultaneous stop.
(7) When the construction spanning and crossing needs the power failure of different towers with multiple loops at the same time, the power failure window period should be determined separately
And 4, step 4: and outputting and displaying the blackable window period.
In the step, the determined blackable window period is displayed in the user interface, so that the method is visual and reliable.
The method for determining the blackable window period is introduced in the following manner in combination with the classification types of the utility classification of the power transmission and transformation equipment in the power grid.
Referring to fig. 2, a method for determining a blackable window period of a wind power generation output channel device includes the following steps:
first, basic data is collected, which includes:
collecting a wind speed trend curve of 10 meters in 1-3 years;
judging the load curve of the area blocked by the channel for 1-3 years: if the channel is a cross province channel, the load curve of the province network is sent out; if the channel is a cross-region channel, the load curve of the end region power grid is sent out;
secondly, determining the power failure window period, and the steps are as follows:
judging whether a load exists in the blocking area: if the load exists, the maximum period of the algebraic difference between the load and the wind speed converted power in the whole year is the power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as a power failure window period.
Figure 3 shows a schematic flow diagram for determining the blackable window period for a hydroelectric delivery channel apparatus.
Firstly, acquiring basic data, namely acquiring a hydropower annual power generation power curve (8760 points), secondly, determining a power failure window period, and determining a hydropower dry period as the power failure window period.
Referring to fig. 4, a method for determining a blackable window period of a photovoltaic output channel device includes the following steps:
first, basic data is collected, which includes:
collecting a photovoltaic power generation trend curve of 1-3 years (the new installation rate is reduced according to the original installation)
Collecting a regional load curve with channel blockage for 1-3 years: if the channel is a cross province channel, the load curve of the province network is sent out; and if the channel is a cross-region channel, sending out a load curve of the end region power grid.
Secondly, determining the power failure window period, comprising the following steps:
judging whether a load exists in the blocking area: a load exists in the blocking area, and the maximum period of the algebraic difference between the load and the converted power of the optical resource in the whole year is a power failure window period; and if no load exists in the blocking area, selecting the minimum photovoltaic power generation time period as a power failure window period.
Referring to fig. 5, a method for determining blackable window periods of a cross-region device and a device having an effect on cross-region channel capacity includes the following steps:
first, basic data is collected, which includes:
acquiring an annual load curve of a transmitting-end power grid;
acquiring an annual load curve of a receiving-end power grid;
and (4) acquiring the sending requirement (curve) of clean energy of the power grid at the sending end.
Secondly, calculating a window period according to the acquired annual load curve of the transmitting end power grid, the annual load curve of the receiving end power grid and the window period of the sending end power grid clean energy sending demand polarity, wherein the window period comprises the following steps:
the period when the sending capacity is larger than the sending demand is a power failure window period 1;
the minimum time period of the sending demand (curve) of the clean energy of the sending end power grid is a window period 2;
after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3;
and power failure window periods 1, 2 and 3 are calculated, and the overlapping time period is the power failure window period.
Referring to fig. 6, a method for determining blackout window periods of a profile device and a device having an effect on profile limits includes:
first, basic data is collected, which includes:
collecting a load curve in a section blocking area;
collecting a generator set maintenance plan in a section blocking area;
the influence of the section power transmission capacity on the power balance outside the area is collected;
and collecting the power generation requirement of clean energy in the blocking area of the section.
Secondly, according to the load curve in the section blocking area, the generating set maintenance plan in the section blocking area, the influence of section power transmission capacity on the power balance outside the area and the clean energy power generation demand calculation window period in the section blocking area, including:
the period when the power balance of the blocking area of the section meets the standby requirement or the period which can meet the standby requirement after the maintenance plan of the generator set in the blocking area is adjusted is the power failure window period 1.
The time period with the maximum load-power generation-clean energy power generation requirement in the section blocking area is a power failure window period 2.
The period when the section power transmission capacity does not influence the power balance outside the blocking area is a power failure window period 3.
And power failure window periods 1, 2 and 3 are calculated, and the overlapping time period is the power failure window period.
Referring to fig. 7, a method for determining blackable window period of a feeding load device of a grid-connected power plant includes:
first, basic data is collected, which includes:
collecting a load annual curve of a feed area;
collecting an important load maintenance plan of continuous production in a feed supply area;
collecting seasonal important load annual trend (such as agricultural irrigation load) of a feed supply area;
and collecting the maintenance plan and the output trend of the generator set in the feed area.
Secondly, calculating a window period according to the acquired annual load curve of the feed supply area, the important load maintenance plan of continuous production of the feed supply area, the annual seasonal important load trend of the feed supply area, the maintenance plan of the generator set in the feed supply area and the output trend, and comprising the following steps:
the annual load valley period of the feed area is a power failure window period 1;
the outage and maintenance time period of continuously producing important loads in the feeding area is a power failure window period 2;
the non-peak period of the seasonal important load year in the feeding area is a power failure window period 3;
the period when the output of the generator set in the feed area meets the requirement that the area exchanges zero power externally is a power failure window period 4;
and power failure window periods 1, 2, 3 and 4 are calculated, and the overlapping time period is the power failure window period.
Referring to fig. 8, a method for determining blackable window period of a feeding load device of a grid-less power plant includes:
first, basic data is collected, which includes:
collecting a load annual curve of a feed area;
collecting an important load maintenance plan of continuous production in a feed supply area;
annual trends of seasonal important loads (such as agricultural irrigation loads) of the feeding area are collected.
Secondly, calculating a window period according to the acquired annual load curve of the feed supply area, the continuous production important load maintenance plan of the feed supply area and the annual trend of seasonal important loads of the feed supply area, wherein the window period comprises the following steps:
the annual load valley period of the feed area is a power failure window period 1;
the outage and maintenance time period of continuously producing important loads in the feeding area is a power failure window period 2;
the non-peak period of the seasonal important load year in the feeding area is a power failure window period 3;
and power failure window periods 1, 2 and 3 are calculated, and the overlapping time period is the power failure window period.
In addition, the blackout window period of the nuclear power output channel equipment and the thermal power output channel equipment can be determined, the nuclear power unit maintenance is matched after the blackout window period is determined, and the thermal power unit maintenance is matched when balance and outward transmission are not influenced; and the cross-region system is matched with the cross-region system for maintenance by sending out a power supply line.
The blackout window period of the trans-provincial equipment and the equipment with influence on the trans-provincial channel capacity can also be determined, and basic data are collected firstly, wherein the basic data comprise:
(1) a transmitting end power grid annual load curve;
(2) receiving end power grid annual load curve;
(3) the clean energy of the sending end power grid sends out the demand (curve).
Secondly, determining the blackable window period, comprising the following steps:
(1) the period when the sending capacity is larger than the sending demand is a power failure window period 1;
(2) the minimum time period of the sending demand (curve) of the clean energy of the sending end power grid is a window period 2;
(3) after the maintenance plan of the receiving-end power grid generator set and the power failure plan of the cross-regional channel are adjusted in a matching mode, the period meeting the power and electricity balance of the receiving-end power grid is a power failure window period 2;
the overlapping time periods of the power failure window periods 1, 2 and 3 are power failure window periods.
FIG. 9 is a schematic diagram illustrating a determination result of a blackable window period. A specific implementation is given in conjunction with fig. 9.
The West Sichuan brocade screen of the Jinsu direct current system is from east to Jiangsu Suzhou, the total length is 2058 kilometers, the rated capacity is 720 ten thousand kilowatts, the sending terminal brocade screen and the official region machine are assembled with 1080 ten thousand kilowatts, the south-falling area belongs to an electricity-consumption high-load area, the overhaul of the equipment has great influence on the water level collapse and receiving terminal electric power balance of a southwest key hydropower plant, and the selection of overhaul time is extremely complex.
Through combining the historical power transmission level of the Jinsu direct current and the water level fluctuation curve of the reservoir, and the load prediction of the receiving end and the capacity of the power receiving alternating current section, the power failure window of the Jinsu direct current system is scientifically calculated:
criterion (a) (formula): [ upstream water level of Jinxi ] <1860 & [ jin Su DC ] <3600 & [ Sichuan power delivery demand ] <5100 & [ Jiangsu total load ] < 0.15 & [ Sunan AC section ] <5000 ].
(II) consideration factors: firstly, the direct current transportation of the Jinsu is low in demand and the Jinxi power plant has a certain storage capacity (the water level is less than 1860 meters); secondly, the requirement for transporting the Sichuan hydropower is small, and water abandon is avoided under the condition of brocade overhaul, namely [ the requirement for transporting the Sichuan hydropower ] <5100 (the minimum capacity of alternating sections of Bingjin and Chuan Yu under the condition of brocade overhaul is 5100); (3) the receiving end has lower southwest load and lower power of the alternating current receiving section, and the power failure of the jin su is avoided to cause limited load in the southwest area, namely [ total load of Jiangsu ]. 0.15<12000 & [ alternating current section of southwest ] < 5000.
The blackout-capable window period is displayed, and the display result is shown in fig. 9.
Example 2
Fig. 10 is a schematic structural diagram of a system for determining blackout window period of a main device of a power grid. The system for determining the blackout window period of the main equipment of the power grid comprises:
the determination module is used for determining classification types of the power transmission and transformation equipment classified according to the power transmission and transformation equipment;
the acquisition module is used for acquiring basic data corresponding to the classification type according to the classification type;
the judging module is used for determining the blackable window period of the power transmission and transformation equipment according to the basic data;
and the output module is used for outputting and displaying the blackable window period.
Preferably, the classification types of the utility classification include: wind power delivery channel equipment, hydroelectric delivery channel equipment, photovoltaic delivery channel equipment, nuclear power delivery channel equipment, thermal power delivery channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota and feed supply load equipment.
Preferably, when the classification type is wind power output channel equipment, the basic data includes: a wind speed trend curve and a region load curve blocked by a channel within a preset age limit; the power failure window period determining step comprises the following steps: determining the maximum time period of the algebraic difference between the load and the wind speed converted power in the whole year as a power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as the window period of available power failure.
Preferably, when the classification type is a hydroelectric power transmission passage apparatus, the basic data includes: a hydropower annual power generation power curve; the power failure window period determining step comprises the following steps: and determining the water shortage period of the water and electricity as a blackable window period.
Preferably, when the classification type is a cross-region device and a device having an influence on cross-region channel capability, the basic data comprises: the annual load curve of the transmitting-end power grid, the annual load curve of the receiving-end power grid and the clean energy transmitting demand curve of the transmitting-end power grid; the power failure window period determining step comprises the following steps: the period when the sending capacity is larger than the sending demand is a power failure window period 1; the minimum time period of the clean energy delivery demand curve of the delivery end power grid is a power failure window period 2; after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3; and determining the overlapping time periods of the power failure window periods 1, 2 and 3 as the final blackable window period.
The implementation process of each module function in this embodiment is the same as the implementation process of the method step in embodiment 1, and is not described here again.
The method is scientific and reasonable, can reduce the accompanying and stopping of the equipment and reduce the potential safety hazard of the power grid caused by maintenance.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A method for determining a blackable window period of a main device of a power grid is characterized by comprising the following steps:
step 1: determining classification types of the classification of the functions of the power transmission and transformation equipment in the power grid according to the functions of the power transmission and transformation equipment;
step 2: acquiring basic data corresponding to the classification type according to the classification type;
and step 3: and determining the blackable window period of the power transmission and transformation equipment according to the basic data.
2. The method of claim 1, wherein the classification type of utility classification comprises at least one of: wind power delivery channel equipment, hydroelectric delivery channel equipment, photovoltaic delivery channel equipment, nuclear power delivery channel equipment, thermal power delivery channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota and feed supply load equipment.
3. The method of claim 1, wherein when the classification type is wind power outtake channel equipment, the base data comprises at least one of: a wind speed trend curve and a region load curve blocked by a channel within a preset age limit;
the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: if a load exists in the blocking area, determining the period with the maximum algebraic difference between the load and the wind speed converted power in the whole year as a power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as the window period of available power failure.
4. The method of claim 1, wherein when the classification type is hydroelectric delivery channel equipment, the base data comprises: a hydropower annual power generation power curve; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: and determining the water shortage period of the water and electricity as a blackable window period.
5. The method of claim 1, wherein when the classification type is a cross-zone device and a device that has an impact on cross-zone channel capability, the base data comprises: the annual load curve of the transmitting-end power grid, the annual load curve of the receiving-end power grid and the clean energy transmitting demand curve of the transmitting-end power grid;
the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: the period when the sending capacity is larger than the sending demand is a power failure window period 1; the minimum time period of the clean energy delivery demand curve of the delivery end power grid is a power failure window period 2; after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3; and determining the overlapping time periods of the power failure window periods 1, 2 and 3 as the final blackable window period.
6. A system for determining blackout window period of a main device of a power grid, the system comprising:
the determination module is used for determining classification types of the power transmission and transformation equipment classified according to the power transmission and transformation equipment;
the acquisition module is used for acquiring basic data corresponding to the classification type according to the classification type;
and the judging module is used for determining the blackable window period of the power transmission and transformation equipment according to the basic data.
7. The system of claim 6, wherein the classification type of the utility classification comprises at least one of: wind power delivery channel equipment, hydroelectric delivery channel equipment, photovoltaic delivery channel equipment, nuclear power delivery channel equipment, thermal power delivery channel equipment, trans-regional equipment and equipment influencing the trans-regional channel capacity, trans-provincial equipment and equipment influencing the trans-provincial channel capacity, section equipment and equipment influencing the section quota and feed supply load equipment.
8. The system of claim 6, wherein when the classification type is wind power outtake channel equipment, the base data comprises at least one of: a wind speed trend curve and a region load curve blocked by a channel within a preset age limit; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: if a load exists in the blocking area, determining the period with the maximum algebraic difference between the load and the wind speed converted power in the whole year as a power failure window period; and if no load exists in the blocking area, selecting the minimum period of wind power generation as the window period of available power failure.
9. The system of claim 6, wherein when the classification type is hydroelectric delivery channel equipment, the base data comprises: a hydropower annual power generation power curve; the power failure window period determining step comprises the following steps: and determining the water shortage period of the water and electricity as a blackable window period.
10. The system of claim 6, wherein when the classification type is a cross-zone device and a device that has an impact on cross-zone channel capability, the base data comprises: the annual load curve of the transmitting-end power grid, the annual load curve of the receiving-end power grid and the clean energy transmitting demand curve of the transmitting-end power grid; the step of determining the blackable window period of the power transmission and transformation equipment comprises the following steps: the period when the sending capacity is larger than the sending demand is a power failure window period 1; the minimum time period of the clean energy delivery demand curve of the delivery end power grid is a power failure window period 2; after the maintenance plan of the power generator set of the receiving-end power grid and the power failure plan of the trans-provincial channel are adjusted in a matched mode, the period which meets the power and electricity balance of the receiving-end power grid is a power failure window period 3; and determining the overlapping time periods of the power failure window periods 1, 2 and 3 as the final blackable window period.
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| CN113590682A (en) * | 2021-07-20 | 2021-11-02 | 中国电力科学研究院有限公司 | Power grid power failure window period generation method and device, electronic equipment and storage medium |
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