CN110889584A - Intelligent dispatching system of step power station - Google Patents
Intelligent dispatching system of step power station Download PDFInfo
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Abstract
The invention discloses an intelligent dispatching system of a cascade power station, which relates to the technical field of intelligent dispatching and comprises an economic safety operation subsystem, wherein the economic safety operation subsystem is positioned in a production control II area of a safety subarea, hydrological, meteorological and reservoir operation information of a power station watershed and other related systems is timely and accurately acquired by means of advanced acquisition and transmission technology, and the functions of data monitoring, online flood forecasting, water affair comprehensive management and the like are realized by calculating and processing according to a related mathematical model and a large-scale database based on a new theory and a new technology of reservoir optimal dispatching. The invention is composed of a series of optimized scheduling decisions such as the optimized formulation of the cascade power generation plan, the optimized distribution of the load between stations and in-station, the dynamic control of the water level of the cascade power station, and the like. Various decision and control targets determine that a plurality of optimization criteria exist in the optimized dispatching control of the cascade hydropower station group. The operator may decide to select the corresponding optimization criteria manually or automatically by the system.
Description
Technical Field
The invention relates to the technical field of intelligent dispatching, in particular to an intelligent dispatching system for a cascade power station.
Background
The intelligent dispatching control system spans the secondary safety protection 1 and I areas of the power system according to the development requirements of the intelligent power grid and the intelligent hydraulic power plant, organically integrates a water dispatching automation system and an electric regulation automation system on the basis of a system platform, and integrates real-time monitoring and safety control, economic operation and optimized dispatching, operation maintenance and decision management. The system consists of six subsystems of water supply forecasting, cascade optimization scheduling, flood prevention decision support, benefit assessment and risk analysis, economic scheduling control and real-time monitoring, provides decision support and control means for economic safety operation and optimization scheduling of the hydropower station, has the characteristics of informatization, automation and interaction, and is beneficial supplement of the intelligent power grid.
However, when the existing safety monitoring internet of things big data system is used, the alarm is linked independently and video switching is performed, and only the video of an alarm point can be displayed, so that the accident tracking and the plan processing are inconvenient. Therefore, the intelligent dispatching system of the cascaded power station is provided.
Disclosure of Invention
The invention aims to provide an intelligent dispatching system of a cascade power station, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the intelligent dispatching system of the cascade power station, including the economic safe operation subsystem, the said economic safe operation subsystem locates in the production control II district of the safe subregion, rely on advanced collection and transmission technology, obtain the hydrology, meteorology and reservoir operation information of the basin and other relevant systems of the power station accurately in time, on the basis of new theory and new technology that the reservoir optimizes the dispatch, calculate and process according to relevant mathematical model and large-scale database, realize the data and monitor, on-line flood forecast, water affairs are managed etc. and provide the decision-making scheme of comprehensive dispatching of power station including flood control and generating electricity, cascade reservoir unites the flood control and dispatch scheme etc. rapidly, support the economic dispatch of the hydropower plant and electric wire netting at the same time, mainly include: the system comprises an incoming water forecasting system, a power generation dispatching system, a flood prevention decision support system and a benefit assessment and risk analysis system real-time monitoring control subsystem.
Preferably, the real-time monitoring control subsystem is located in a production control area of the safety partition, receives a scheduling command and a requirement of a superior power grid scheduling mechanism, sends a remote monitoring and control command to each power plant computer monitoring system of a subordinate level, and acts on each site control unit through a power plant station control layer system or directly.
Preferably, the real-time monitoring control subsystem realizes the functions of remote control, remote regulation, remote measurement, remote signaling, cascade economic operation, optimized dispatching and management, accurately, reliably and effectively monitors and controls all controlled objects of each power plant in real time, and simultaneously realizes joint control with the economic safe operation subsystem of the production control II area to form a regulation and control integrated mode. The method mainly comprises a real-time monitoring system and economic dispatching control.
Preferably, the real-time monitoring system is a comprehensive application system integrating real-time monitoring and safety control, economic operation and scheduling control, system integration and information sharing on the basis of a unified information platform, is tightly connected with a reservoir scheduling decision support system, a flood prevention decision support system and a cascade power station economic operation scheduling system, seamlessly integrates various intelligent systems, realizes various intelligent high-level application functions, and has basic functions of real-time data acquisition and processing, comprehensive data calculation, control and regulation, safe operation monitoring, accident recall and the like.
Preferably, the algorithm adopted by the intelligent scheduling system is a dynamic programming algorithm, which is dp (dynamic programming) for short, and is a mathematical method for solving the optimization of a multi-stage decision process, and is created by american mathematician bellman (r. The dynamic programming mainly relates to the concepts of stages and stage variables, states and state variables, decision variables and decision sequences, state transition equations, stage effects, objective functions and the like, and the optimal solution of the problem is solved by sequential or reverse order time-interval recursion.
Preferably, the dynamic programming algorithm mainly comprises the advantages of strict theory, capability of ensuring absolute convergence to a global optimal solution, easiness in programming, high solving efficiency and the like.
Preferably, the dynamic programming algorithm also has a certain disadvantage that a "dimension disaster" is easily generated when a multi-dimensional problem is handled, so that the calculation cannot be performed or the calculation takes too long to meet the requirements of practical application.
Compared with the prior art, the invention has the beneficial effects that:
(1) the system is composed of a series of optimized scheduling decisions such as optimized formulation of a cascade power generation plan, optimized distribution of loads between stations and in stations, dynamic control of cascade power station water level and the like. Various decision and control targets determine that a plurality of optimization criteria exist in the optimized dispatching control of the cascade hydropower station group. In different scheduling tasks, the operator may decide to select the corresponding optimization criteria manually or automatically by the system.
(2) According to the system, three optimization criteria, namely a maximum power generation criterion, a maximum energy storage criterion and a minimum reservoir water level out-of-limit degree criterion, are mainly adopted in the optimized dispatching control of the cascade hydropower station group. In the development process of the system, the application conditions, the scheduling model and the optimization algorithm of different optimization criteria need to be analyzed and researched in detail, the step is vital to the optimal scheduling control of the cascade hydropower station group, and the accuracy and the reasonability of the research result directly determine the practical value and the optimization level of the optimal scheduling control.
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FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the intelligent dispatching system of the cascade power station comprises an intelligent dispatching system of the cascade power station, which comprises an economic safe operation subsystem, the economic safe operation subsystem is positioned in a production control II area of a safe subarea, hydrological, meteorological and reservoir operation information of a power station basin and other related systems is timely and accurately acquired by means of advanced acquisition and transmission technology, calculation and processing are carried out according to related mathematical models and large databases based on new theories and new technologies of reservoir optimal scheduling, functions of data monitoring, online flood forecasting, water affair comprehensive management and the like are realized, and rapidly provides a power station comprehensive dispatching decision scheme including flood control and power generation, a cascade reservoir combined flood control dispatching scheme and the like, simultaneously support the economic dispatch of water power plant and electric wire netting, mainly include: the system comprises an incoming water forecasting system, a power generation dispatching system, a flood prevention decision support system and a benefit assessment and risk analysis system real-time monitoring control subsystem.
The real-time monitoring control subsystem is positioned in a production control area of the safety partition, receives the scheduling command and the requirement of a superior power grid scheduling mechanism, sends remote monitoring and control commands to computer monitoring systems of power plants of subordinate levels, and acts on the site control units through a power plant station control layer system or directly.
The real-time monitoring control subsystem realizes the functions of remote control, remote regulation, remote measurement, remote signaling, cascade economic operation, optimized dispatching and management, realizes the safe monitoring and control of all controlled objects of each power plant in real time, accurately, reliably and effectively, and realizes the joint control with the economic safe operation subsystem of the production control II area to form a 'regulation and control integrated' mode. The method mainly comprises a real-time monitoring system and economic dispatching control.
The real-time monitoring system is based on a unified information platform, integrates a comprehensive application system with real-time monitoring and safety control, economic operation and scheduling control, system integration and information sharing, is tightly connected with a reservoir scheduling decision support system, a flood prevention decision support system and a cascade power station economic operation scheduling system, seamlessly integrates various intelligent systems, realizes various intelligent advanced application functions, and has basic functions of real-time data acquisition and processing, comprehensive data calculation, control and regulation, safe operation monitoring, accident recall and the like.
The algorithm adopted by the intelligent scheduling system is a dynamic programming algorithm, which is DP (dynamic programming) for short, is a mathematical method for solving the optimization of a multi-stage decision process, and is created by American mathematician Bellman (R.Bellman) and the like. The dynamic programming mainly relates to the concepts of stages and stage variables, states and state variables, decision variables and decision sequences, state transition equations, stage effects, objective functions and the like, and the optimal solution of the problem is solved by sequential or reverse order time-interval recursion.
The dynamic programming algorithm mainly has the advantages of strict theory, capability of ensuring absolute convergence to a global optimal solution, easiness in programming, high solving efficiency and the like.
The dynamic programming algorithm also has certain defects, namely, dimension disaster easily occurs when a multi-dimensional problem is processed, so that calculation cannot be operated or calculation time is too long to meet the requirements of practical application.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The related modules involved in the system are all hardware system modules or functional modules combining computer software programs or protocols with hardware in the prior art, and the computer software programs or the protocols involved in the functional modules are all known in the technology of persons skilled in the art, and are not improvements of the system; the improvement of the system is the interaction relation or the connection relation among all the modules, namely the integral structure of the system is improved, so as to solve the corresponding technical problems to be solved by the system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The intelligent dispatching system of the cascade power station comprises an economic safe operation subsystem and is characterized in that: the economic safe operation subsystem is positioned in a production control II area of a safe subarea, hydrology, meteorology and reservoir operation information of a power station basin and other related systems is timely and accurately acquired by means of advanced acquisition and transmission technology, calculation and processing are carried out according to related mathematical models and large databases based on new theories and new technologies of reservoir optimal scheduling, functions such as data monitoring, online flood forecasting, water comprehensive management and the like are achieved, a power station comprehensive scheduling decision scheme including flood control and power generation, a step joint flood control scheduling scheme and the like are rapidly provided, economic scheduling of a hydropower plant and a power grid is supported, and the economic safe operation subsystem mainly comprises a water forecasting system, a power generation scheduling system, a flood control decision support system and a benefit assessment and risk analysis system real-time monitoring control subsystem.
2. The cascaded power station intelligent dispatching system of claim 1, wherein: the real-time monitoring control subsystem is positioned in a production control area of the safety partition, receives the scheduling command and the requirement of a superior power grid scheduling mechanism, sends remote monitoring and control commands to computer monitoring systems of power plants of subordinate levels, and acts on the site control units through a power plant station control layer system or directly.
3. The cascaded power station intelligent dispatching system of claim 2, wherein: the real-time monitoring control subsystem realizes the functions of remote control, remote regulation, remote measurement, remote signaling, cascade economic operation, optimized dispatching and management, realizes the safe monitoring and control of all controlled objects of each power plant in real time, accurately, reliably and effectively, and realizes the joint control with the economic safe operation subsystem of the production control II area to form a 'regulation and control integrated' mode, which mainly comprises a real-time monitoring system and economic dispatching control.
4. The cascaded power station intelligent dispatching system of claim 2, wherein: the real-time monitoring system is based on a unified information platform, integrates a comprehensive application system with real-time monitoring and safety control, economic operation and scheduling control, system integration and information sharing, is tightly connected with a reservoir scheduling decision support system, a flood prevention decision support system and a cascade power station economic operation scheduling system, seamlessly integrates various intelligent systems, realizes various intelligent advanced application functions, and has basic functions of real-time data acquisition and processing, comprehensive data calculation, control and regulation, safe operation monitoring, accident recall and the like.
5. The cascaded power station intelligent dispatching system of claim 1, wherein: the algorithm adopted by the intelligent scheduling system is a dynamic programming algorithm, the dynamic programming algorithm is DP (dynamic programming) for short, is a mathematical method for solving the optimization of a multi-stage decision process, is created by American mathematician Bellman and the like, mainly relates to concepts such as stage and stage variables, state and state variables, decision variables and decision sequences, state transfer equations, stage effects, objective functions and the like, and solves the optimal solution of the problem by sequential or reverse order time-interval recursion.
6. The cascaded power station intelligent dispatching system of claim 5, wherein: the dynamic programming algorithm mainly has the advantages of strict theory, capability of ensuring absolute convergence to a global optimal solution, easiness in programming, high solving efficiency and the like.
7. The cascaded power station intelligent dispatching system of claim 5, wherein: the dynamic programming algorithm also has certain defects, namely, dimension disaster easily occurs when a multi-dimensional problem is processed, so that calculation cannot be operated or calculation time is too long to meet the requirements of practical application.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112785454A (en) * | 2020-12-25 | 2021-05-11 | 国电大渡河流域水电开发有限公司 | Intelligent scheduling method for flood season of cascade hydropower station and decision support system |
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