CN111478323A - Point-to-point transformer capacity mutual aid method - Google Patents
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Abstract
The invention discloses a point-to-point transformer capacity mutual aid method, which comprises the following steps: s1, installing an intelligent terminal at a transformer; s2, connecting various energy type energy storage elements such as batteries and flexible loads to a distribution network through an intelligent terminal; s3, completing point-to-point data transmission through an intelligent terminal, connecting scattered transformers in a well-ordered manner, and efficiently coordinating acquired mass data through big data and an artificial intelligence technology to enable the transformers to cooperatively exert force and realize mutual-aid capacity sharing; and S5, the platform automatically completes transaction settlement according to the judgment result of the power dispatching department and the rule. And a standardized flow is established aiming at information interaction, response confirmation, transaction signing, default judgment, result accounting and the like in the platform operation process, so that supervision and control on the whole supply and demand transaction process are realized, and timeliness, reliability and safety are guaranteed.
Description
Technical Field
The invention relates to a method for mutual compensation of the capacity of a point-to-point transformer, belonging to the field of electric power.
Background
The power distribution network has great change along with the energy structure and the user demand, changes from the traditional radiation type to the multi-source interconnection, and further develops towards the direction of multi-level, multi-link and multi-form complex networks. Particularly, with the reform of an electric power trading system and the improvement of a market trading mechanism, a future power distribution network is dominated by a distributed power supply, an information communication technology and an energy network are deeply integrated, the responsible requirement of flexible load differentiation is met, an electric power market is participated by a multi-market main body, and the electricity price and the electricity utilization form are more flexible.
The interaction of the current power grid is a strong center mode, and with the gradual maturity of new technologies such as the internet of things, big data, block chains and the like, a decentralized, point-to-point interaction, high controllability, high flexibility and customized energy system becomes a reality.
In the future, the power distribution network will take on multiple roles of renewable energy consumption support, multi-element mass information integration, transaction with participation of multi-benefit main bodies and electrification support and service.
Aiming at the future requirements of power distribution network architecture and scenario, with the gradual maturity of ICT technology and ecological chain, the method is different from the traditional strong center type operation mode, and creatively provides a point-to-point transformer capacity mutual aid method based on ICT technology.
An end-to-end deployment strategy can be realized through an ICT technology, a centralized spontaneous management mechanism is established by adopting a consensus mechanism principle on the basis of the Internet of things technology, direct conversation among transformers is realized, the communication efficiency is higher, and the system cost is lower. The novel application mode is combined with computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism and an encryption algorithm. The point-to-point data transmission among the transformers is achieved, the dispersed transformers are connected in a well-ordered mode, the collected mass data are efficiently cooperated through big data and artificial intelligence technology, point-to-point direct interaction and cooperative output are achieved among the transformers, and mutual assistance and sharing of loads are achieved.
The intelligent information acquisition technology completes the large data acquisition of the distribution transformer on the premise of low cost and low power consumption, integrates system operation, market transaction and user power consumption data on a transformer capacity mutual aid sharing platform, improves the large data analysis capability of a load side, and enhances the response capability of the load side.
The distribution transformer is used as a terminal transformer of a power system, plays an important core role in the processes of power transmission, distribution and use, is insufficient in overall power supply capacity, and is lower than the increase range of power loads in overall capacity, so that a plurality of transformer stations are overloaded for power supply, and the reliability is reduced. When the transformer is overloaded, the insulation of the transformer is aged, the temperature of each part is greatly increased, the service life of each part is reduced, and the like, and the overload of the transformer not only increases the failure rate, but also is penalized by a power grid company.
The 'meeting summer' is a firm attack which must be done by power supply enterprises every year, and a plurality of lines enter a full-load or even overload running state as soon as the meeting summer comes, so that domestic appliance netmen are prepared all the time as soon as the meeting summer comes, and the safe operation of equipment is guaranteed. The method has the advantages that through the transformer capacity sharing and load coordination sharing trading platform deep analysis area and the user energy consumption variable characteristics, an optimal load coordination economic model is established for users, through marketized economic means, the user energy cost is reduced to the maximum extent, and safe, reliable and stable operation of a power grid in the peak period of power utilization is guaranteed.
The capacity design of a single distribution transformer is determined according to different load densities and power supply radiuses and by considering the load increase condition of each 1 period. With the social progress, the annual growth rate of design is low, the annual growth rate is generally considered to be 5% when the natural load growth rate is considered in the past, the load growth is relatively fast recently, and the annual growth of the load of a single transformer area exceeds 10%, so that the common capacity of the currently operated distribution transformer is insufficient. The design load density is smaller, especially in industrial concentration areas and central urban areas, the line load is larger, the power supply line runs at full load, and the capacity expansion of the transformer cannot be realized when a user has capacity expansion requirements.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a point-to-point mutual compensation method for transformer capacity, which solves the problems.
(II) technical scheme
A method for mutual capacitance compensation of a point-to-point transformer is characterized by comprising the following steps:
s1, installing an intelligent terminal at a transformer;
s2, connecting various energy type energy storage elements such as batteries and flexible loads to a distribution network through an intelligent terminal;
s3, completing point-to-point data transmission through an intelligent terminal, connecting scattered transformers in a well-ordered manner, and efficiently coordinating acquired mass data through big data and an artificial intelligence technology to enable the transformers to cooperatively exert force and realize mutual-aid capacity sharing;
s4, the power dispatching department establishes an optimized dispatching model by using big data and an intelligent algorithm, and can finish the judgment of the contents of the safety constraint condition, the limited capacity, the limited basis, the use conditions of other users on the power transmission and distribution equipment, the constraint time interval and the like of the power transmission and distribution line through the intelligent dispatching algorithm and a decision support system and by combining a safety check module arranged in the platform;
and S5, the platform automatically completes transaction settlement according to the judgment result of the power dispatching department and the rule.
Further, in S1, the intelligent terminal is used as a basic measurement and control device at the bottom layer, is an important link of power distribution network informatization, and has flexible terminal access and networking modes, rich measurement content and data resource sharing, and real-time synchronous measurement, control and transmission of wide area data.
Further, in S2, the power electronic converter in the intelligent terminal implements charge and discharge control of the energy storage element, and implements load capacity optimization in combination with control of the flexible load, so that the intelligent terminal becomes a highly integrated comprehensive energy regulation and control device.
Furthermore, the intelligent terminal is provided with a wireless receiving and transmitting device.
Furthermore, the intelligent terminal is connected with the big data acquisition device through the distributed controller.
Furthermore, the big data acquisition equipment is electrically connected with the big data storage equipment.
Furthermore, the big data acquisition equipment and the big data storage equipment are connected with the human-computer interaction visualization terminal.
Furthermore, a visual liquid crystal display screen is arranged on the human-computer interaction visual terminal.
Further, in S4, the user puts forward a load demand, the system sends a response offer according to the response capability of each user, the user can confirm that the response time can also interrupt the capacity, the system can supervise the response process according to the deviation limit of the response capacity, supervise whether a default condition occurs in the response process, and if a default occurs, take default measures and take mandatory measures for the gap load.
Further, when no default occurs, the transaction is finished after settlement is carried out according to the load response completion degree.
(III) advantageous effects
The invention provides a method for mutual compensation of the capacity of a point-to-point transformer. Compared with the prior art, the method has the following beneficial effects:
the flexible and flexible power distribution network provides necessary ways and technical support for realizing mutual aid of the capacity of the transformer, and relates to different links of various layers such as flexible equipment, flexible scheduling and flexible transaction.
1. SOP-based flexible interconnection of power distribution network
The intelligent soft switch SOP technology oriented to the power distribution layer surface is causing a new research heat tide, a power electronic device is used for replacing a traditional interconnection switch to form a normalized soft connection, the traditional power supply mode of closed-loop design and open-loop operation is changed, and flexible, quick and accurate power exchange control and tide optimization capacity can be provided.
2. Adjustable flexible load
The power load can be further subdivided according to three different dimensions of power supply reliability, user production property and adjustable characteristic. Which can be divided into adjustable and non-adjustable loads according to the adjustable characteristic.
The adjustable load mainly comprises a temperature-controlled load, a time-driven equipment load, an intelligent household load and the like. The temperature-controlled loads include loads having a certain time lag and heat transfer characteristics such as an air conditioner, a heat pump, and a water heater. Time-driven equipment loads are represented by loads of washing machines, dryers and the like, and have a distinctive stepwise characteristic. The smart home can effectively optimize internal resources and interact with an external power grid through the energy management system.
3. Information and Communication Technology (ICT) -based informatization development
An information and digital power distribution system based on an ICT is a key for improving the flexibility level of a power distribution network, comprehensive information acquisition and analysis are beneficial to cognition of the running state of the power distribution network and uncertainty reduction, and the accuracy and the timeliness of running control of the power distribution network are obviously improved by means of rapid measurement and communication. The core problem is the effective collection, mining and utilization of information.
4. Flexible energy trading service
With the deepening of the electric power system innovation and the promotion of the electric power spot market, the power distribution network provides bidirectional customized energy service for users in the future, a point-to-point energy transaction channel facing the users is formed, and the interaction of multi-benefit subjects is completed through sufficient market competition and games.
Drawings
FIG. 1 is a system diagram of a method for peer-to-peer mutual capacitance compensation of transformers;
FIG. 2 is a diagram illustrating an optimized dispatching model established by a big data and intelligent algorithm by a power dispatching department;
in the figure: the method comprises the following steps of 1-an intelligent terminal, 2-a distributed controller, 3-a big data acquisition device, 4-a big data storage device and 5-a human-computer interaction visualization terminal.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, 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.
Referring to fig. 1-2, a method for mutual capacitance compensation of a point-to-point transformer includes the following steps:
s1, installing an intelligent terminal at a transformer, wherein the intelligent terminal is used as a basic measuring and controlling device of a bottom layer, is an important link of power distribution network informatization, has flexible terminal access and networking modes, rich measuring content and data resource sharing, and real-time synchronous measuring, controlling and transmitting of wide area data;
s2, connecting various energy type energy storage elements such as batteries and flexible loads into a distribution network through an intelligent terminal; the charging and discharging control of an energy storage element is realized by utilizing a power electronic converter in the intelligent terminal, and the load capacity optimization is realized by combining the control of a flexible load, so that the intelligent terminal becomes a highly integrated comprehensive energy regulation and control device;
s3, completing point-to-point data transmission through an intelligent terminal, connecting scattered transformers in a well-ordered manner, and efficiently coordinating acquired mass data through big data and an artificial intelligence technology to enable the transformers to cooperatively exert force and realize mutual-aid capacity sharing;
s4, the power dispatching department establishes an optimized dispatching model by using big data and an intelligent algorithm, and can finish the judgment of the contents of the safety constraint condition, the limited capacity, the limited basis, the use conditions of other users on the power transmission and distribution equipment, the constraint time interval and the like of the power transmission and distribution line through the intelligent dispatching algorithm and a decision support system and by combining a safety check module arranged in the platform;
and S5, the platform automatically completes transaction settlement according to the judgment result of the power dispatching department and the rule.
The method comprises the steps that a user puts forward a load demand, a system sends response invitations according to response capacity of each user, the user can confirm response time and also can interrupt capacity, the system can supervise a response process according to a response capacity deviation limit value, supervise whether default occurs in the response process, and punish the default if the default occurs, firstly, punishment of different unit electric quantity is respectively set according to the load level, secondly, execution is carried out in a mode of forcibly deducting default money, thirdly, the deduction result is subjected to public notice, and load response capacity evaluation of the user is reduced; and when the default does not appear, ending the transaction after settlement according to the load response completion degree.
And a standardized flow is established aiming at information interaction, response confirmation, transaction signing, default judgment, result accounting and the like in the platform operation process, so that supervision and control on the whole supply and demand transaction process are realized, and timeliness, reliability and safety are guaranteed.
Example 2
A method for mutual capacitance compensation of point-to-point transformers comprises the following steps:
s1, installing an intelligent terminal at a transformer, wherein the intelligent terminal is used as a basic measuring and controlling device of a bottom layer, is an important link of power distribution network informatization, has flexible terminal access and networking modes, rich measuring content and data resource sharing, and real-time synchronous measuring, controlling and transmitting of wide area data;
s2, connecting various energy type energy storage elements such as batteries and flexible loads into a distribution network through an intelligent terminal; the charging and discharging control of an energy storage element is realized by utilizing a power electronic converter in the intelligent terminal, and the load capacity optimization is realized by combining the control of a flexible load, so that the intelligent terminal becomes a highly integrated comprehensive energy regulation and control device;
s3, completing point-to-point data transmission through an intelligent terminal, connecting scattered transformers in a well-ordered manner, and efficiently coordinating acquired mass data through big data and an artificial intelligence technology to enable the transformers to cooperatively exert force and realize mutual-aid capacity sharing;
s4, the power dispatching department establishes an optimized dispatching model by using big data and an intelligent algorithm, and can finish the judgment of the contents of the safety constraint condition, the limited capacity, the limited basis, the use conditions of other users on the power transmission and distribution equipment, the constraint time interval and the like of the power transmission and distribution line through the intelligent dispatching algorithm and a decision support system and by combining a safety check module arranged in the platform;
and S5, the platform automatically completes transaction settlement according to the judgment result of the power dispatching department and the rule.
The user puts forward the load demand, the system sends a response invitation according to the response capacity of each user, the user can confirm the response time and also can interrupt the capacity, the system can supervise the response process according to the deviation limit value of the response capacity, supervise whether default occurs in the response process, if default occurs, take default measures, take mandatory measures for the gap load, and when default does not occur, the transaction is finished after settlement is carried out according to the load response completion degree.
Example 1 differs from example 2 in the measures taken in the event of a breach.
The flexible and flexible power distribution network provides necessary ways and technical support for realizing mutual aid of the capacity of the transformer, and relates to different links of various layers such as flexible equipment, flexible scheduling and flexible transaction.
5. SOP-based flexible interconnection of power distribution network
The intelligent soft switch SOP technology oriented to the power distribution layer surface is causing a new research heat tide, a power electronic device is used for replacing a traditional interconnection switch to form a normalized soft connection, the traditional power supply mode of closed-loop design and open-loop operation is changed, and flexible, quick and accurate power exchange control and tide optimization capacity can be provided.
6. Adjustable flexible load
The power load can be further subdivided according to three different dimensions of power supply reliability, user production property and adjustable characteristic. Which can be divided into adjustable and non-adjustable loads according to the adjustable characteristic.
The adjustable load mainly comprises a temperature-controlled load, a time-driven equipment load, an intelligent household load and the like. The temperature-controlled loads include loads having a certain time lag and heat transfer characteristics such as an air conditioner, a heat pump, and a water heater. Time-driven equipment loads are represented by loads of washing machines, dryers and the like, and have a distinctive stepwise characteristic. The smart home can effectively optimize internal resources and interact with an external power grid through the energy management system.
7. Information and Communication Technology (ICT) -based informatization development
An information and digital power distribution system based on an ICT is a key for improving the flexibility level of a power distribution network, comprehensive information acquisition and analysis are beneficial to cognition of the running state of the power distribution network and uncertainty reduction, and the accuracy and the timeliness of running control of the power distribution network are obviously improved by means of rapid measurement and communication. The core problem is the effective collection, mining and utilization of information.
8. Flexible energy trading service
With the deepening of the electric power system innovation and the promotion of the electric power spot market, the power distribution network provides bidirectional customized energy service for users in the future, a point-to-point energy transaction channel facing the users is formed, and the interaction of multi-benefit subjects is completed through sufficient market competition and games.
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 (10)
1. A method for mutual capacitance compensation of a point-to-point transformer is characterized by comprising the following steps:
s1, installing an intelligent terminal at a transformer;
s2, connecting various energy type energy storage elements such as batteries and flexible loads to a distribution network through an intelligent terminal;
s3, completing point-to-point data transmission through an intelligent terminal, connecting scattered transformers in a well-ordered manner, and efficiently coordinating acquired mass data through big data and an artificial intelligence technology to enable the transformers to cooperatively exert force and realize mutual-aid capacity sharing;
s4, the power dispatching department establishes an optimized dispatching model by using big data and an intelligent algorithm, and can finish the judgment of the contents of the safety constraint condition, the limited capacity, the limited basis, the use conditions of other users on the power transmission and distribution equipment, the constraint time interval and the like of the power transmission and distribution line through the intelligent dispatching algorithm and a decision support system and by combining a safety check module arranged in the platform;
and S5, the platform automatically completes transaction settlement according to the judgment result of the power dispatching department and the rule.
2. The method of claim 1, wherein the method further comprises: in S1, the intelligent terminal is used as a basic measurement and control device at the bottom layer, is an important link of power distribution network informatization, and has flexible terminal access and networking modes, rich measurement content and data resource sharing, and real-time synchronous measurement, control and transmission of wide-area data.
3. The method of claim 1, wherein the method further comprises: in S2, the power electronic converter in the intelligent terminal implements charge and discharge control of the energy storage element, and implements load capacity optimization in combination with control of the flexible load, so that the intelligent terminal becomes a highly integrated comprehensive energy regulation and control device.
4. The method of claim 1, wherein the method further comprises: and the intelligent terminal is provided with a wireless receiving and transmitting device.
5. The method of claim 1, wherein the method further comprises: and the intelligent terminal is connected with the big data acquisition device through the distributed controller.
6. The method of claim 5, wherein the step of converting the transformer capacity to a point-to-point transformer capacity comprises: and the big data acquisition equipment is electrically connected with the big data storage equipment.
7. The method of claim 6, wherein the step of converting the transformer capacity to a point-to-point transformer capacity comprises: and the big data acquisition equipment and the big data storage equipment are connected with the human-computer interaction visualization terminal.
8. The method of claim 7, wherein the step of transforming comprises: and the human-computer interaction visualization terminal is provided with a visualization liquid crystal display screen.
9. The method of claim 8, wherein the step of transforming comprises: in S4, the user puts forward the load demand, the system sends a response offer according to the response capability of each user, the user can confirm that the response time can also interrupt the capacity, the system can supervise the response process according to the deviation limit of the response capacity, supervise whether a default occurs in the response process, if a default occurs, take default measures, and take mandatory measures for the gap load.
10. The method of claim 9, wherein the step of transforming comprises: and when the default does not appear, ending the transaction after settlement according to the load response completion degree.
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Application publication date: 20200731 |