CN114069620B - Prediction and scheduling method for power system - Google Patents
Prediction and scheduling method for power system Download PDFInfo
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- CN114069620B CN114069620B CN202111349992.5A CN202111349992A CN114069620B CN 114069620 B CN114069620 B CN 114069620B CN 202111349992 A CN202111349992 A CN 202111349992A CN 114069620 B CN114069620 B CN 114069620B
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a prediction and scheduling method of a power system, and particularly relates to the field of power management. According to the invention, the analog quantity measuring and calculating system is designed to measure and calculate the scheduled power, so that the actual scheduled effective power and the theoretical scheduled power are measured and calculated, the data result obtained by measuring and calculating a plurality of times is recorded and used as a standard template for subsequent scheduling, and the template can be updated in real time to reduce the error between each measuring and calculating result and the actual result, so that a user can more intuitively measure and calculate the value required to be reported when applying for power scheduling.
Description
Technical Field
The invention relates to the field of power management, in particular to a prediction and scheduling method of a power system.
Background
The power system is an electric energy production and consumption system composed of links such as power plant, power transmission and transformation line, power supply and distribution station and electricity consumption, and has the functions of converting primary energy in nature into electric energy through a power generation power device, and supplying the electric energy to each user through power transmission, transformation and distribution.
In the prior art, the power scheduling aspect is generally scheduled by a scheduling control center, the uniform scheduling has certain information delay, the power actually distributed to each region is possibly not matched with local actual demands, meanwhile, the power required to be scheduled in each region cannot be subjected to rapid total sum transmission, the control center is easy to process a large number of power scheduling tasks in different regions in a short time, the power required to be scheduled is uploaded at the control center belongs to theoretical figures, and the power is lost to different degrees in the transmission process, so that the power required to be scheduled and the power actually scheduled to the target region have certain difference.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the power scheduling aspect is generally scheduled by a scheduling control center, the uniform scheduling has certain information delay, the power actually distributed to each region is possibly not matched with the local actual demand, meanwhile, the power required to be scheduled in each region cannot be subjected to rapid total transmission, the control center is easy to process a large number of power scheduling tasks in different regions in a short time, the power required to be scheduled is uploaded at the position and belongs to theoretical figures, and the power is lost to different degrees in the transmission process, so that the power required to be scheduled and the power actually scheduled to the target region have certain difference.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The prediction and scheduling method of the electric power system comprises a data exchange center, an internal communication system, an electric power production system and an electric power transmission system, wherein the data exchange center comprises a communication scheduling subsystem, a coordinated command subsystem, an analog quantity calculating system, an instruction transmission subsystem and a GPS positioning system, a data interaction end of the communication scheduling subsystem is in signal connection with a data interaction end of the coordinated command subsystem, the data interaction end of the coordinated command subsystem is in signal connection with a data interaction end of the analog quantity calculating system, a data output end of the coordinated command subsystem is in signal connection with a data access end of the instruction transmission subsystem, and a data interaction end of the GPS positioning system is in signal connection with a data interaction end of the coordinated command subsystem.
By adopting the technical scheme: the subsystems cooperate to record the dispatching power of the regional level control center, the provincial level control center, the municipal level control center and the regional control center, and the result is uniformly uploaded to the command dispatching center, so that each region can report the power required to be dispatched by itself conveniently.
Preferably, the internal communication system comprises a command dispatching center, a large-area-level control center, a provincial-level control center, a municipal-level control center and a regional control center, wherein a data interaction end of the command dispatching center is in signal connection with a data interaction end of the large-area-level control center, the data interaction end of the large-area-level control center is in signal connection with a data interaction end of the provincial-level control center, the data interaction end of the provincial-level control center is in signal connection with a data interaction end of the municipal-level control center, and the data interaction end of the municipal-level control center is in signal connection with a data interaction end of the regional control center.
By adopting the technical scheme: the power required to be scheduled in each region is summed up and reported to the command and dispatch center in a unified mode by adopting a hierarchical scheduling mode, so that the power in each region is conveniently and comprehensively scheduled, the power scheduling processing efficiency is improved, and the scheduling pressure of the command and dispatch center is also reduced.
Preferably, the power production system comprises a large nuclear power plant, an energy base, a large thermal power plant, a large hydropower plant, a medium-sized thermal power plant and a medium-sized hydropower plant, wherein the data output end of the large regional level control center is in signal connection with the data input ends of the large nuclear power plant, the energy base, the large thermal power plant and the large hydropower plant, and the data output end of the provincial level control center is in signal connection with the data input ends of the medium-sized thermal power plant and the medium-sized hydropower plant.
By adopting the technical scheme: the regional level control center and the provincial level control center respectively control different power generation systems, so that the power generation system is convenient to distribute and coordinate, the regional level control center schedules the power among the regions, and the provincial level control center is utilized to perform secondary scheduling in each region, so that the gap between the power actually scheduled to each region and the power actually required by the power is reduced, the times of power required scheduling are reduced, and the effect of reducing the power transmission loss is achieved.
Preferably, the power transmission system comprises a hub transformer substation, a power substation and a terminal transformer substation, wherein the power output end of the hub transformer substation is electrically connected with the power input end of the power substation, and the power output end of the power substation is electrically connected with the power input end of the terminal transformer substation.
By adopting the technical scheme: the hub substation, the power substation and the terminal substation respectively correspond to power transmission among a large area level, a provincial level, a municipal level and a region.
Preferably, the regional control center comprises a user scheduling terminal and information acquisition personnel.
By adopting the technical scheme: information collection personnel collect information of terminal substations and different users distributed in each area.
Preferably, a water and thermal power station monitoring center is arranged between the medium-sized thermal power station and the medium-sized hydropower station and the provincial control center.
By adopting the technical scheme:
Preferably, the analog quantity measuring and calculating system comprises a data transmission stage and a data measuring and calculating stage, wherein the data transmission stage comprises:
s1, firstly, sending a request for applying power scheduling to a cooperative command subsystem through the communication scheduling subsystem, and starting power scheduling;
s2, the communication scheduling subsystem judges the state of a communication channel, and the total power required to be scheduled can be input to the analog measurement system after normal communication;
S3, the analog quantity measuring and calculating system measures and calculates the loss generated in the power dispatching process, and after the analog quantity measuring and calculating system measures and calculates, the total quantity of the dispatchable power is inquired through the cooperative command subsystem, and a measuring and calculating result is transmitted to the cooperative command subsystem;
and S4, after the final confirmation of the cooperative command subsystem, transmitting the scheduling information to the instruction transmission subsystem, namely finishing power scheduling.
The data measurement phase comprises theoretical measurement and actual measurement, wherein the theoretical measurement comprises:
S5, converting the total power to be scheduled into digital pulse frequency, inputting the digital pulse frequency into a CPU, and inserting a digital conversion standard template and a digital data comparison template for theoretical calculation while inputting the digital pulse frequency into the CPU;
The actual measurement includes:
s6, after theoretical calculation is completed, transmitting a calculation result to an output interface to simulate an actual power dispatching result, and inserting a standard power transmission route in a simulation process to calculate the total amount of actual power loss in transmission;
s6, converting the finally calculated digital data into actual power and transmitting specific data back to the CPU to finish the theoretical and actual calculation of the whole power dispatching.
By adopting the technical scheme: the analog quantity measuring and calculating system measures and calculates the actual scheduled effective power and the theoretical scheduled power of the scheduled power, records and calculates the data results obtained by measuring and calculating for a plurality of times, and is used as a standard template for subsequent scheduling, and the template can be updated in real time to reduce errors between each measuring and calculating result and the actual result, so that a user can more intuitively measure and calculate the value to be reported when applying for power scheduling.
Preferably, the step S3 of the data uploading stage further includes the following steps:
S3.1, after the calculation data are input to the collaborative command subsystem, when the schedulable power total amount is sufficient, theoretical calculation and actual calculation are required to be repeated for the second time;
S3.2, when the total amount of the schedulable power is insufficient, the scheduling value is required to be changed according to the total amount of the schedulable power, and then the data calculation is carried out again.
By adopting the technical scheme: the schedulable electric power is recorded in the data exchange center in real time, so that the applicant can conveniently check and declare, and meanwhile, the declaring error condition can be effectively reduced by the triple determination mode.
The beneficial effects of the invention are as follows:
1. The power required to be scheduled in each region is summed up and reported to the command and dispatch center in a unified manner by adopting a hierarchical scheduling mode, so that the power in each region is conveniently and comprehensively scheduled, the power scheduling efficiency is accelerated, the scheduling pressure of the command and dispatch center is also reduced, the gap between the power actually scheduled to each region and the power actually required by the command and dispatch center is further reduced, and the times of power required to be scheduled are reduced to play a role in reducing power transmission loss;
2. An analog measuring and calculating system is additionally arranged in the data exchange center and used for measuring and calculating the electric power which is scheduled, the actual electric power which is scheduled and the electric power which is scheduled theoretically, and the data result which is measured and calculated for a plurality of times is recorded and calculated and used as a standard template for subsequent scheduling, and the template can be updated in real time, so that errors between each measuring and calculating result and the actual result are reduced, and a user can more intuitively measure and calculate the numerical value which needs to be reported when applying for electric power scheduling.
Drawings
Fig. 1 is a schematic diagram of a system module according to the present invention.
FIG. 2 is a schematic diagram of interaction between a data switching hub and an intercom system of the present invention.
FIG. 3 is a schematic flow chart of the analog measuring and calculating system in the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1 and 2, a prediction and scheduling method of an electric power system includes a data exchange center, an internal communication system, an electric power production system and an electric power transmission system, wherein the data exchange center includes a communication scheduling subsystem, a coordinated command subsystem, an analog quantity calculating system, an instruction transmission subsystem and a GPS positioning system, a data interaction end of the communication scheduling subsystem is in signal connection with a data interaction end of the coordinated command subsystem, the data interaction end of the coordinated command subsystem is in signal connection with a data interaction end of the analog quantity calculating system, a data output end of the coordinated command subsystem is in signal connection with a data access end of the instruction transmission subsystem, and a data interaction end of the GPS positioning system is in signal connection with a data interaction end of the coordinated command subsystem.
In this embodiment, the communication scheduling subsystem, the coordinated command subsystem, the analog measurement subsystem, the instruction transmission subsystem and the GPS positioning system cooperate to record the scheduling power of the regional level control center, the provincial level control center, the municipal level control center and the regional control center, and upload the result to the command scheduling center in a unified manner, so that each region can report the power required to be scheduled by itself conveniently
Example 2
Referring to fig. 1, the internal communication system comprises a command dispatching center, a large-area-level control center, a provincial-level control center, a municipal-level control center and a regional control center, wherein a data interaction end of the command dispatching center is in signal connection with a data interaction end of the large-area-level control center, the data interaction end of the large-area-level control center is in signal connection with a data interaction end of the provincial-level control center, the data interaction end of the provincial-level control center is in signal connection with a data interaction end of the municipal-level control center, and the data interaction end of the municipal-level control center is in signal connection with a data interaction end of the regional control center.
In the embodiment, the hierarchical scheduling modes of the command scheduling center, the large-area level control center, the provincial level control center, the municipal level control center and the regional control center are adopted to sum and uniformly report the power required to be scheduled in each region to the command scheduling center, so that the power in each region is conveniently and comprehensively scheduled, the power scheduling processing efficiency is improved, and the scheduling pressure of the command scheduling center is also reduced.
Example 3
Referring to fig. 1, the power generation system includes a large nuclear power plant, an energy base, a large thermal power plant, a large hydroelectric power plant, a medium thermal power plant, and a medium hydroelectric power plant, the data output end of the large district-level control center is in signal connection with the data input ends of the large nuclear power plant, the energy base, the large thermal power plant, and the large hydroelectric power plant, and the data output end of the provincial level control center is in signal connection with the data input ends of the medium thermal power plant and the medium hydroelectric power plant.
In the embodiment, the large-scale control center and the provincial control center respectively control the large-scale nuclear power plant, the energy base, the large-scale thermal power plant, the large-scale hydropower station, the medium-scale thermal power plant and the medium-scale hydropower station, so that the distribution coordination is convenient, the gap between the power actually scheduled to each area and the power actually required by the power is reduced, the times of power scheduling is reduced, and the effect of reducing the power transmission loss is achieved.
Example 4
Referring to fig. 1, the power transmission system includes a hub transformer substation, a power substation and a terminal substation, wherein a power output end of the hub transformer substation is electrically connected with a power input end of the power substation, a power output end of the power substation is electrically connected with a power input end of the terminal substation, the regional control center includes a user dispatching terminal and an information acquisition personnel, and a water and thermal power station monitoring center is arranged between the medium-sized thermal power station and the medium-sized hydropower station and the provincial control center.
Example 5
Referring to fig. 3, the analog quantity measuring system includes a data transmission stage and a data measuring stage, the data transmission stage including:
s1, firstly, sending a request for applying power scheduling to a cooperative command subsystem through the communication scheduling subsystem, and starting power scheduling;
s2, the communication scheduling subsystem judges the state of a communication channel, and the total power required to be scheduled can be input to the analog measurement system after normal communication;
S3, the analog quantity measuring and calculating system measures and calculates the loss generated in the power dispatching process, and after the analog quantity measuring and calculating system measures and calculates, the total quantity of the dispatchable power is inquired through the cooperative command subsystem, and a measuring and calculating result is transmitted to the cooperative command subsystem;
and S4, after the final confirmation of the cooperative command subsystem, transmitting the scheduling information to the instruction transmission subsystem, namely finishing power scheduling.
The data measurement phase comprises theoretical measurement and actual measurement, wherein the theoretical measurement comprises:
S5, converting the total power to be scheduled into digital pulse frequency, inputting the digital pulse frequency into a CPU, and inserting a digital conversion standard template and a digital data comparison template for theoretical calculation while inputting the digital pulse frequency into the CPU;
The actual measurement comprises the following steps:
s6, after theoretical calculation is completed, transmitting a calculation result to an output interface to simulate an actual power dispatching result, and inserting a standard power transmission route in a simulation process to calculate the total amount of actual power loss in transmission;
s6, converting the finally calculated digital data into actual power and transmitting specific data back to the CPU to finish the theoretical and actual calculation of the whole power dispatching.
The step S3 of the data uploading stage further includes the steps of:
S3.1, after the calculation data are input to the collaborative command subsystem, when the schedulable power total amount is sufficient, theoretical calculation and actual calculation are required to be repeated for the second time;
S3.2, when the total amount of the schedulable power is insufficient, the scheduling value is required to be changed according to the total amount of the schedulable power, and then the data calculation is carried out again.
In this embodiment, a CPU in the analog measurement system uses EPYC-7002, and the analog measurement system measures and calculates the power to be scheduled, so as to measure and calculate the actual power to be scheduled and the power to be scheduled theoretically, and records the data result obtained by measuring and calculating multiple times, so as to be used as a standard template for subsequent scheduling, and the template can be updated in real time, so that the error between the measurement result and the actual result at each time is reduced, and the user can more intuitively measure and calculate the value to be reported when applying for power scheduling.
Working principle: when the invention is used, personnel applying for power dispatching report the power required to be dispatched through the communication dispatching subsystem, after inputting the power value into the analog quantity computing system, the computing system converts the voltage quantity represented by the value into a digital form, the digital form is input into the CPU, meanwhile, a standard template made according to the data counted by the previous record is inserted in the input process, the theoretical processing of the data is carried out, then the digital result is transmitted to an output interface, meanwhile, a circuit template of actual transportation is inserted, the power consumed in the dispatching process and the final result are calculated, finally, the digital result is converted into the actual voltage quantity to be input to the collaborative command subsystem, the theoretical computation and the actual computation are required to be repeated for the second time through the comparison with the total quantity of the dispatchable power when the total quantity of the dispatchable power is sufficient, when the total amount of the schedulable power is insufficient, the scheduling value is required to be changed according to the schedulable total amount, then data measurement and calculation are carried out again, the power is finally confirmed by declaration personnel and is sent to an instruction transmission subsystem for power scheduling, meanwhile, a GPS positioning system directionally sends the instruction to a city level control center and a regional control center according to information for uploading data, at the moment, each control center reports the total amount of the required scheduling power to a large-area level control center and a provincial level control center, at the moment, the large-area level control center and the provincial level control center respectively schedule the power generated by a large-scale nuclear power station, an energy base, a large-scale thermal power station, a large-scale hydropower station, a thermal power station and a medium-scale hydropower station to a hub substation and a power substation, then the power substation is dispersed to a terminal substation and is sent to a user, and finally, information acquisition personnel follow the actual dispatching power and synchronously upload the data to the data exchange center.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The prediction and scheduling method for the electric power system is characterized by comprising a data exchange center, an internal communication system, an electric power production system and an electric power transmission system, wherein the data exchange center comprises a communication scheduling subsystem, a cooperative command subsystem, an analog quantity calculating system, an instruction transmission subsystem and a GPS positioning system, a data interaction end of the communication scheduling subsystem is in signal connection with a data interaction end of the cooperative command subsystem, the data interaction end of the cooperative command subsystem is in signal connection with a data interaction end of the analog quantity calculating system, a data output end of the cooperative command subsystem is in signal connection with a data access end of the instruction transmission subsystem, and a data interaction end of the GPS positioning system is in signal connection with a data interaction end of the cooperative command subsystem;
the analog measuring and calculating system comprises a data transmission stage and a data measuring and calculating stage, wherein the data transmission stage comprises the following steps:
s1, firstly, sending a request for applying power scheduling to a cooperative command subsystem through the communication scheduling subsystem, and starting power scheduling;
s2, the communication scheduling subsystem judges the state of a communication channel, and the total power required to be scheduled can be input to the analog measurement system after normal communication;
S3, the analog quantity measuring and calculating system measures and calculates the loss generated in the power dispatching process, and after the analog quantity measuring and calculating system measures and calculates, the total quantity of the dispatchable power is inquired through the cooperative command subsystem, and a measuring and calculating result is transmitted to the cooperative command subsystem;
s4, after the final confirmation of the cooperative command subsystem, the scheduling information is transmitted to the instruction transmission subsystem, namely, the power scheduling is completed;
the data measurement phase comprises theoretical measurement and actual measurement, wherein the theoretical measurement comprises:
S5, converting the total power to be scheduled into digital pulse frequency, inputting the digital pulse frequency into a CPU, and inserting a digital conversion standard template and a digital data comparison template for theoretical calculation while inputting the digital pulse frequency into the CPU;
The actual measurement includes:
s6, after theoretical calculation is completed, transmitting a calculation result to an output interface to simulate an actual power dispatching result, and inserting a standard power transmission route in a simulation process to calculate the total amount of actual power loss in transmission;
S7, converting the finally calculated digital data into actual power and transmitting specific data back to the CPU to finish the theoretical and actual calculation of the whole power dispatching.
2. The method for predicting and dispatching a power system according to claim 1, wherein the internal communication system comprises a command dispatching center, a regional level control center, a provincial level control center, a municipal level control center and a regional control center, wherein a data interaction end of the command dispatching center is in signal connection with a data interaction end of the regional level control center, a data interaction end of the regional level control center is in signal connection with a data interaction end of the provincial level control center, a data interaction end of the provincial level control center is in signal connection with a data interaction end of the municipal level control center, and a data interaction end of the municipal level control center is in signal connection with a data interaction end of the regional control center.
3. The method for predicting and dispatching a power system according to claim 2, wherein the power production system comprises a large nuclear power plant, an energy base, a large thermal power plant, a large hydroelectric power plant, a medium thermal power plant and a medium hydroelectric power plant, the data output end of the large regional control center is in signal connection with the data input ends of the large nuclear power plant, the energy base, the large thermal power plant and the large hydroelectric power plant, and the data output end of the provincial control center is in signal connection with the data input ends of the medium thermal power plant and the medium hydroelectric power plant.
4. The method for predicting and dispatching a power system according to claim 1, wherein the power transmission system comprises a hub transformer substation, a power substation and a terminal transformer substation, wherein the power output end of the hub transformer substation is electrically connected with the power input end of the power substation, and the power output end of the power substation is electrically connected with the power input end of the terminal transformer substation.
5. The method for predicting and scheduling a power system of claim 2, wherein said regional control center comprises a user scheduling terminal and information gathering personnel.
6. A method of predicting and scheduling an electrical power system as set forth in claim 3 wherein water and thermal power plant monitoring centers are disposed between said medium-sized thermal power plant and medium-sized hydroelectric power plant and said provincial control center.
7. The method for predicting and scheduling a power system according to claim 1, wherein the step S3 of the data transmission stage further comprises the steps of:
S3.1, after the calculation data are input to the collaborative command subsystem, when the schedulable power total amount is sufficient, theoretical calculation and actual calculation are required to be repeated for the second time;
S3.2, when the total amount of the schedulable power is insufficient, the scheduling value is required to be changed according to the total amount of the schedulable power, and then the data calculation is carried out again.
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| CN108512303A (en) * | 2017-05-16 | 2018-09-07 | 苏州纯青智能科技有限公司 | Power regulation system |
| CN110416998A (en) * | 2019-07-01 | 2019-11-05 | 华北电力大学 | A kind of complicated distribution scheduling Control management system in area based on virtual power plant |
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| EP2147359A2 (en) * | 2007-05-09 | 2010-01-27 | Gridpoint, Inc. | Method and system for scheduling the discharge of distributed power storage devices and for levelizing dispatch participation |
| CN208316300U (en) * | 2018-07-10 | 2019-01-01 | 江苏晟能售电有限公司 | A kind of electric power dispatching system |
| CN113346558B (en) * | 2021-06-30 | 2024-08-30 | 国家电网公司东北分部 | Virtual power plant operation control system and control method |
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| CN108512303A (en) * | 2017-05-16 | 2018-09-07 | 苏州纯青智能科技有限公司 | Power regulation system |
| CN110416998A (en) * | 2019-07-01 | 2019-11-05 | 华北电力大学 | A kind of complicated distribution scheduling Control management system in area based on virtual power plant |
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