CN115663831B - Flexible grid-connected energy consumption method - Google Patents
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Abstract
The invention provides a distributed energy flexible grid-connected consumption method, which belongs to the technical field of electric energy allocation and comprises the following steps: a plurality of converters are disposed at different positions of the target area, and a plurality of power line segments are connected between two adjacent converters. The method comprises the steps of setting a plurality of distributed energy sources as energy supply points, and electrically connecting the plurality of energy supply points and the plurality of energy consumption points with the nearest converter. The power supply line segments in the idle state are sequentially connected through the converters, so that the electric energy of the energy supply point is transmitted to the energy consumption point. The distributed energy flexible grid-connected consumption method provided by the invention can transmit the electric energy generated by the distributed energy independently of the distribution point network, and the current flow directions in the power supply line sections can be different, so that the direct connection of the electric energy between the energy supply points and the energy consumption points is completed, the impact on the distribution network is avoided, and the energy is saved.
Description
Technical Field
The invention belongs to the technical field of electric energy allocation, and particularly relates to a distributed energy flexible grid-connected consumption method.
Background
Under the background of constructing a novel power system taking new energy as a main body, distributed photovoltaic and wind power are rapidly developed, so that uncertainty of a power distribution network side is further enhanced. Meanwhile, the wide access of the high-proportion distributed new energy power supply enables the traditional power terminal user of the power distribution network to be changed from a single power consumer to a production and consumption integrated consumer, and the power distribution network has wide adjustment elasticity and adjustment potential to be mined. The method has the advantages of promoting the interactive consumption of the distributed energy sources in the active power distribution network, avoiding the waste of the distributed energy sources, improving the capacity of the active power distribution network for the distributed energy sources, promoting the safe, environment-friendly and efficient clean development of the power grid, reducing the electricity consumption cost of users, and having great significance for social and economic development.
An active distribution network refers to a distribution network that internally contains distributed energy sources and has self-control, management and operational capabilities. The existing situation is that a large amount of distributed energy equipment is connected into a power grid, overvoltage, blocking and relay protection are easy to cause, and the fluctuation of the power generated by the distributed energy is large, so that the distributed energy is often limited to surfing the internet, and a large amount of abandoned generated energy is caused. That is, although the distributed energy source can reduce consumption of energy required for generation, there is an impact on the power distribution network, so that the power distribution network cannot operate stably.
Disclosure of Invention
The invention aims to provide a flexible grid-connected consumption method for distributed energy, and aims to solve the problem that the power distribution network cannot stably run due to impact of the distributed energy on the power distribution network.
In order to achieve the above purpose, the invention adopts the following technical scheme: the method for flexibly realizing grid-connected energy consumption of the distributed energy source comprises the following steps:
arranging a plurality of converters at different positions of a target area, and connecting a plurality of power supply line segments between two adjacent converters;
Setting a plurality of distributed energy sources as energy supply points, and electrically connecting a plurality of energy supply points and a plurality of energy consumption points with the nearest converter;
And the power supply line segments in the idle state are sequentially connected through a plurality of converters, so that the electric energy of the energy supply point is transmitted to the energy consumption point.
In one possible implementation manner, the sequentially connecting the power line segments in the idle state through the plurality of converters includes:
Determining the number of power supply line segments between two adjacent converters according to the number and the scale of the energy supply points and the energy consumption points;
Setting a power transmission route, and transmitting the received power to the power supply line section which is free and has the same direction as the route by the converter so as to transmit the power to the next converter.
In one possible implementation manner, a power supply port, a power transmission port and a plurality of contacts are arranged in the converter, the contacts are connected with the power supply line segments at corresponding points on two sides of the converter, the power supply port is connected with the corresponding energy supply points, and the power transmission port is connected with the corresponding energy consumption points; and a switch is arranged in the converter and is used for enabling the contact, the power transmission port and the power supply port to be connected with each other according to requirements.
In one possible implementation manner, the sequentially connecting the power line segments in the idle state through the plurality of converters includes:
The power supply port is connected with the power transmission port through the switch, so that direct electric energy transmission between the energy supply point and the energy consumption point is completed;
The power supply port is connected with the contact through the switch, so that electric energy of the energy supply point is transmitted into the power supply line section;
And the power transmission port is connected with the contact through the switch, so that electric energy in the power supply line segment is output to the energy consumption point.
In one possible implementation, the causing the power of the energy supply point to be transmitted to the energy consumption point includes:
Setting an originating point and a destination point, wherein the originating point represents the converter corresponding to the energy supply point for transmitting out electric energy, and the destination point represents the converter corresponding to the energy consumption point for receiving electric energy;
And determining a plurality of converters between the starting point and the ending point and the power supply line segments in an idle state, so that electric energy sequentially passes through the plurality of converters and the plurality of power supply line segments in the idle state.
In one possible implementation, after said electrically connecting a plurality of said energy supply points and a plurality of energy consumption points to the nearest said converter, further comprises:
predicting the electric energy generated by each energy supply point and predicting the electric energy required by the energy consumption point;
and completing the transmission of electric energy between the energy supply point and the energy consumption point by taking the shortest distance as a principle.
In one possible implementation manner, the completing the transmission of the electric energy between the energy supply point and the energy consumption point based on the shortest distance includes:
The converter which needs energy transmission at present is taken as an origin, and the matched converter is searched in a certain range;
after determining the amount of power transfer, power transfer is performed.
In one possible implementation, the transmitting of the electric energy after determining the amount of electric energy transmission includes:
determining the electric energy which can be provided by the energy supply point and the electric energy which is required by the energy consumption point;
If the electric energy of the energy consumption point cannot be met within a certain range, the electric energy of part of the energy consumption point outside the range is called;
If the energy of the energy supply points is surplus within a certain range, the surplus energy is transmitted to the energy consumption points outside the range.
In one possible implementation, the disposing a plurality of converters at different positions in the target area includes:
An energy storage station is arranged between the energy consumption point and the converter, and the energy storage station receives the electric energy transmitted by the converter and transmits the electric energy to the energy consumption point according to the requirement.
In one possible implementation, the energy storage station receiving the electrical energy from the converter and transmitting the electrical energy to the energy consumption point as required includes:
and if the energy supply point and the energy consumption point are correspondingly connected with the same converter, connecting the energy supply point with the energy storage station, and transferring the electric energy of the energy supply point to the energy consumption point by means of the energy storage station.
The distributed energy flexible grid-connected digestion method provided by the invention has the beneficial effects that: compared with the prior art, in the distributed energy flexible grid-connected consumption method, a plurality of converters are arranged in a target area, and a plurality of power supply line segments are connected between two adjacent converters. Energy points for providing distributed energy sources and energy consumption points requiring electric energy are determined and are connected with a converter.
In practical application, the electric energy sequentially passes through the plurality of converters and the power supply line section in an idle state, so that the transmission of the electric energy between the energy supply point and the energy consumption point is completed.
According to the application, the electric energy generated by the distributed energy source can be transmitted independently of the distribution point network, and the current flow directions in the power supply line sections can be different, so that the direct connection of the electric energy between the energy supply point and the energy consumption point is completed, the impact on the distribution network is avoided, and the energy source is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a distributed energy flexible grid-connected consumption method according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, a description will now be given of a distributed energy flexible grid-connected consumption method provided by the present invention. A flexible grid-connected energy consumption method comprises the following steps:
A plurality of converters are disposed at different positions of the target area, and a plurality of power line segments are connected between two adjacent converters.
The method comprises the steps of setting a plurality of distributed energy sources as energy supply points, and electrically connecting the plurality of energy supply points and the plurality of energy consumption points with the nearest converter.
The power supply line segments in the idle state are sequentially connected through the converters, so that the electric energy of the energy supply point is transmitted to the energy consumption point.
The distributed energy flexible grid-connected digestion method provided by the invention has the beneficial effects that: compared with the prior art, in the distributed energy flexible grid-connected consumption method, a plurality of converters are arranged in a target area, and a plurality of power supply line segments are connected between two adjacent converters. Energy points for providing distributed energy sources and energy consumption points requiring electric energy are determined and are connected with a converter.
In practical application, the electric energy sequentially passes through the plurality of converters and the power supply line section in an idle state, so that the transmission of the electric energy between the energy supply point and the energy consumption point is completed.
According to the application, the electric energy generated by the distributed energy source can be transmitted independently of the distribution point network, and the current flow directions in the power supply line sections can be different, so that the direct connection of the electric energy between the energy supply point and the energy consumption point is completed, the impact on the distribution network is avoided, and the energy source is saved.
It is known that with the rapid development of economy, the problem of environmental pollution caused by the massive use of traditional fossil energy is becoming more serious. In this context, renewable energy power generation is an effective way to solve the global environmental problem and energy crisis, starting to find resources that replace traditional fossil energy. More and more renewable energy sources, such as wind and solar energy, are being accessed in power distribution networks. However, renewable energy power generation has significant randomness and volatility. Therefore, how to achieve efficient scheduling of active distribution networks with uncertainty in renewable energy generation is a challenging topic.
Scheduling of power distribution networks is often a multi-objective optimization problem, as a scheduler typically needs to guarantee acceptable power quality and ensure the safety of the power distribution network while reducing wind and light emissions. For example, the wind and light curtailment penalty cost, voltage bias, and safety margin may be considered multiple objectives and a multi-objective optimization mathematical model of the active power distribution network may be built to obtain an optimal scheduling solution.
Under the pressure of energy shortage difficulty, energy structure transformation and energy conservation and emission reduction, the active distribution network technology is combined, the network energy flow is managed through a flexible network topology structure, and the distributed energy equipment in different areas is actively controlled and managed, so that a clean, reliable, interactive and efficient energy utilization mode is developed, and the method becomes an important means for promoting the economic transformation of the era and developing low-carbon economy.
The miniature energy network comprises four energy forms of cold, heat, electricity and gas, and utilizes the technology of the Internet of things and the information technology to uniformly integrate and implement scheduling on all energy supply equipment in the area so as to achieve the effects of optimizing and supplying energy to the cold, heat and electricity loads of the area and improving the energy utilization efficiency. The combined heat and power energy co-production system is taken as a typical representative of a miniature energy network, and the energy supply mode with high energy utilization efficiency and flexibility and reliability becomes an important means for realizing energy production and consumption transformation, improving comprehensive energy utilization efficiency and solving energy environment problems.
However, under the existing mechanism of 'self-service and residual surfing', the uncertainty of the power distribution network is further converged to the main network, and the supply and demand balance of the system is seriously affected. Furthermore, the inherent hierarchy of the power system insulates the end-user from the upper market signals, and the end-user lacks sufficient expertise and risk bearing capability to cope with the complex rules of market trading and fluctuating price risks. In the existing research, a market mechanism and a trading system for exciting the automation and high-frequency realization of nearby trading of power distribution network terminal producers and consumers are lacking, so that the in-situ consumption of new energy sources is realized.
In addition to photovoltaic, other types of new energy sources exist at present, if the energy sources are completely connected with the grid, the stability of the grid is easily affected, so that the spontaneous self-use mode is adopted for the consumption at present, and the distributed energy sources cannot be treated thoroughly even though the method has a certain effect.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, sequentially connecting power supply segments in an idle state through a plurality of converters includes:
The number of power supply line segments between two adjacent converters is determined according to the number and the scale of the energy supply points and the energy consumption points.
Setting a power transmission route, and transmitting the received power to a power supply line section which is in idle state and is in the same direction with the route by the converter so as to transmit the power to the next converter.
The current problem is that with the continuous increase of the power generation amount of new energy, more and more electric energy needs to be connected in the future, and finally, a larger degree of pulse change occurs in the power grid, and even larger electric energy waste can be caused.
The application provides a short-distance electric energy allocation scheme, which is characterized in that electric energy is supplied to a power supply line through an energy supply point, and the energy consumption point requiring the electric energy is connected with the electric energy input by the energy supply point through the power supply line. More importantly, when the energy supply points can not continuously supply electric energy or the energy consumption points do not need to input electric energy, the combination between other energy supply points and energy consumption points can be flexibly carried out by the method, so that the transmission between the energy can be completed.
In order to achieve the above effects, at least two power supply lines are provided in the present application, and a converter is installed in sequence along the length direction of the power supply lines, the power supply lines are divided into a plurality of segments by the converter, and both the energy supply point and the energy consumption point are electrically connected to the converter, that is, the power of the power supply lines is received by the converter, and the power can be generated by the power of the power supply lines being transmitted to the power supply lines by the converter.
In practical application, the electric energy can be transmitted along a specific direction finally by adjusting the direction of the current on each power supply line segment.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the application, a power supply port, a power transmission port and a plurality of contacts are arranged in the converter, the contacts are connected with power supply line segments of corresponding points on two sides of the converter, the power supply port is connected with corresponding energy supply points, and the power transmission port is connected with corresponding energy consumption points; the switch is arranged in the converter and is used for connecting the contact, the power transmission port and the power supply port with each other according to requirements.
For ease of understanding, two power supply lines are taken as an example, and the plurality of converters divide the two power supply lines into a plurality of segments. Taking one of the converters as an example, four sections of power supply lines are connected to two sides of the converter, and the power supply lines are respectively set as a first section, a second section, a third section and a fourth section. The first section and the second section are positioned between the same two converters, the third section and the fourth section are positioned between the same two converters, the first section and the third section are distributed on one side of the corresponding converter, and the second section and the fourth section are distributed on the other side of the corresponding converter. The first section and the fourth section may be electrically connected through the converter, or the second section and the third section may be electrically connected, and the current directions of the first section and the second section may be opposite.
In order to achieve the above technical effect, if two power supply lines are provided, four contacts are installed in the converter, and a switch is installed in the converter, and the switch can connect or cut off the corresponding contacts.
When electric energy is required to be accessed from the converter, the corresponding contact is connected with the power supply port through the switch, the power supply port transmits the electric energy of the power supply line to the energy supply point, and meanwhile, when electric energy is required to be input to the power supply line, the contact is connected with the power transmission port, so that the energy supply point is communicated with a passage of the power supply line. It should be noted that the four contacts can be electrically connected to the power transmission port and the power supply port through the switch, since electric power can be introduced through a plurality of places. One contact transmits electric energy, and the other contacts can continuously complete electric energy transmission through connection.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, sequentially connecting power supply segments in an idle state through a plurality of converters includes:
The power supply port is connected with the power transmission port through the switch, and direct electric energy transmission between the energy supply point and the energy consumption point is completed.
The power supply port is connected with the contact through the switch, so that the electric energy of the energy supply point is transmitted into the power supply line section.
The power transmission port is connected with the contact through the switch, so that electric energy in the power supply line segment is output to the energy consumption point.
Still take two power supply lines as an example, the quantity of contact in the converter is four this moment, if energy supply point and power consumption point distance are nearer promptly need not when transmitting the electric energy through the power supply line, directly be connected the power supply mouth on the converter this moment with the transmission port electricity, the energy supply point passes into the converter through the power supply mouth with the electric energy, the transmission port carries the electric energy to the power consumption point, in the inside of converter directly with power supply mouth with the transmission port electricity be connected can.
It should be noted that the power supply port and the power transmission port are also in the converter, the power supply port and the power transmission port are also used as electrical connection points, the power supply port and the power transmission port are in relatively independent states with the four contacts, and when electric energy is transmitted through the power supply line, the corresponding contacts can be electrically connected with the power transmission port, so that the output of the electric energy is completed. When electric energy is required to be transmitted to the power supply line, the power supply port can be connected with the corresponding contact to finish the input of the electric energy.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, transmitting the electric energy of the energy supply point to the energy consumption point includes:
Setting an originating point and a destination point, wherein the originating point represents a converter corresponding to an energy supply point for transmitting electric energy, and the destination point represents a converter corresponding to an energy consumption point for receiving electric energy;
and determining a plurality of converters between the starting point and the ending point and a power supply line segment in an idle state, so that electric energy sequentially passes through the plurality of converters and the plurality of power supply line segments in the idle state.
For the sake of clarity, when the electric energy of the energy supply point needs to be transmitted to the energy consumption point through the power supply line, the converters corresponding to the energy supply point and the energy consumption point can be determined first, and the number of other converters and the number of power supply line segments at intervals between two adjacent converters can be determined according to the information such as the numbers of the two converters.
The direction of current flow in two adjacent power supply lines in the present application may be different, thus enabling the transfer of electrical energy from an originating converter to a terminating converter through multiple converters and multiple power supply line segments for the purpose of enabling the transfer of electrical energy.
For this purpose, firstly, the current transmission situation of each power supply line section, that is, the occupation situation of the power supply line section, is determined, then the idle power supply line section is determined, and the idle power supply line sections are required to be ensured to be connected end to end through the head-to-tail connection, so that the originating converter is communicated with the ending converter.
And then the idle power supply line segments are connected through the switches in the converters, and finally the bridging of the electric energy transmission is completed.
It should be noted that a corresponding number of power supply line segments are required to be set according to the number of distributed energy sources and the like, so as to ensure the connection of the electric energy.
According to the application, the photovoltaic is not required to be subjected to power distribution network, namely, the power supply line can independently run with the power transmission line of the power distribution network, so that the impact on the stability of the power distribution network is avoided.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, after electrically connecting each of the plurality of energy supply points and the plurality of energy consumption points to the nearest converter, the method further includes:
and predicting the electric energy generated by each energy supply point and predicting the electric energy required by the energy consumption point.
And the shortest distance is used as a principle to complete the transmission of electric energy between the energy supply point and the energy consumption point.
The reasonable transmission of the generated electric energy to the required energy consumption point is a key for ensuring that the electric energy can be effectively and continuously consumed, and the electric energy to be generated by the energy supply point and the electric energy demand of the energy consumption point are required to be reasonably predicted in advance.
In order to perform accurate prediction, photovoltaic power generation is taken as an example, and the current photovoltaic power generation efficiency can be approximately calculated through parameters such as the illumination angle, illumination intensity, ambient temperature, ambient wind speed and the like of the current day. The power generation efficiency of wind power generation can be approximately calculated through the wind speed and the wind direction of the environment. The new energy can be reasonably estimated by daily recording or the like.
For the energy consumption points, the electricity consumption conditions of each energy consumption point in each period can be reasonably predicted through the electricity consumption requirements submitted by the energy consumption points, the tracking records of daily electricity consumption and the like.
In practical application, if the electric energy transmitted into the electric transmission port is insufficient, the electric energy input by other energy supply points is called through the power supply line or is directly input by the existing power grid. When more electric energy is transmitted from the power supply port, redundant electric energy can be transmitted into the power supply line at the moment, so that other energy consumption points are supplied.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the application, the method for completing the transmission of the electric energy between the energy supply point and the energy consumption point by taking the shortest distance as a principle comprises the following steps:
With the converter that currently requires energy transfer as the origin, a matching converter is searched in a certain range.
After determining the amount of power transfer, power transfer is performed.
As the supply line has internal resistance, the larger the loss of corresponding energy as the length of the supply line increases, and the longer the distance, the more line segments that need to be occupied. Based on the above considerations, a converter for receiving electric energy is used as a reference, then adjacent converters which can provide electric energy are searched for in a certain range, when the electric energy which can be provided and the required electric energy are similar, connection is established, and if the electric energy is insufficient, searching for other converters can be performed again until the requirement of electric energy transmission is met, and the search value is enlarged appropriately.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, after determining the amount of power transfer, performing the power transfer includes:
the power that can be provided by the energy point and the power required by the energy point are determined.
If the electric energy of the energy consumption point in a certain range cannot be met, the electric energy of part of the energy consumption points outside the range is called.
If the energy of the energy supply points is surplus in a certain range, the surplus energy is transmitted to the energy consumption points outside the range.
The energy consumption points can be powered by a plurality of energy supply points, and the energy consumption points can be powered by one energy supply point, so that each power supply line segment needs to be independently operated.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, setting a plurality of converters at different positions of a target area includes:
An energy storage station is arranged between the energy consumption point and the converter, and the energy storage station receives the electric energy transmitted by the converter and transmits the electric energy to the energy consumption point according to the requirement.
Because the demand of the energy consumption point on the electric energy is changed in real time, the electric energy provided by the energy consumption point is also changed in real time, if an energy storage station is not arranged, frequent switching of a switch can be caused, and the current in the power supply line can change in a larger range.
In order to avoid the occurrence of such problems, an energy storage station is arranged on each converter, and the power supply port and the power transmission port are arranged on the energy storage station, and at the moment, the power supply port can supply electric energy to different contacts through the switch, and the contacts transmit the electric energy to the power supply line. Due to the fact that the energy storage station is arranged, frequent switching of the switch can be avoided to a certain extent, and more importantly, when electric energy consumption in the energy storage station is fast, the electric power department can input electric energy for the energy storage station by enabling the corresponding contact to be electrically connected with the power supply port.
In some embodiments of the distributed energy flexible grid-connected consumption method provided by the present application, the energy storage station receiving the electric energy transferred by the converter and transmitting the electric energy to the energy consumption point according to the requirement includes:
if the energy supply point and the energy consumption point are correspondingly connected with the same converter, the energy supply point is connected with the energy storage station, and the electric energy of the energy supply point is transferred to the energy consumption point by means of the energy storage station.
In the embodiment, the energy supply point and the energy consumption point are located at the same position, and when an individual photovoltaic in a region is taken as an example, and more electric energy is generated by the photovoltaic, redundant electric energy needs to be input into the power supply line. It should be noted, however, that the transmission of electrical energy over the supply line is partially lossy and to some extent makes the supply line unstable.
For this purpose, the excess energy of the excess energy supply point can be stored in the energy storage station, and if there is still excess energy, this can then be uploaded to the supply line, so that an in-situ consumption of the supply is achieved to a certain extent.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The flexible grid-connected energy consumption method is characterized by comprising the following steps of:
arranging a plurality of converters at different positions of a target area, and connecting a plurality of power supply line segments between two adjacent converters;
Setting a plurality of distributed energy sources as energy supply points, and electrically connecting a plurality of energy supply points and a plurality of energy consumption points with the nearest converter;
the power supply line segments in an idle state are sequentially connected through a plurality of converters, so that electric energy of the energy supply point is transmitted to the energy consumption point;
the sequentially connecting the power supply line segments in the idle state through the plurality of converters includes:
Determining the number of power supply line segments between two adjacent converters according to the number and the scale of the energy supply points and the energy consumption points;
Setting a power transmission route, and transmitting the received power to the power supply line section which is free and has the same direction as the route by the converter so as to transmit the power to the next converter;
The converter is internally provided with a power supply port, a power transmission port and a plurality of contacts, wherein the contacts are connected with the power supply line segments at corresponding points on two sides of the converter, the power supply port is connected with the corresponding energy supply points, and the power transmission port is connected with the corresponding energy consumption points; a switch is arranged in the converter and is used for enabling the contact, the power transmission port and the power supply port to be connected with each other according to requirements;
the sequentially connecting the power supply line segments in the idle state through the plurality of converters includes:
The power supply port is connected with the power transmission port through the switch, so that direct electric energy transmission between the energy supply point and the energy consumption point is completed;
The power supply port is connected with the contact through the switch, so that electric energy of the energy supply point is transmitted into the power supply line section;
The power transmission port is connected with the contact through the switch, so that electric energy in the power supply line segment is output to the energy consumption point;
said causing power from said energy supply point to be transferred to said energy consumption point comprises:
Setting an originating point and a destination point, wherein the originating point represents the converter corresponding to the energy supply point for transmitting out electric energy, and the destination point represents the converter corresponding to the energy consumption point for receiving electric energy;
Determining a plurality of converters between the starting point and the ending point and the power supply line segments in an idle state, so that electric energy sequentially passes through the plurality of converters and the plurality of power supply line segments in the idle state;
After said electrically connecting each of said energy supply points and said energy consumption points with the nearest said converter, further comprising:
predicting the electric energy generated by each energy supply point and predicting the electric energy required by the energy consumption point;
and completing the transmission of electric energy between the energy supply point and the energy consumption point by taking the shortest distance as a principle.
2. The flexible grid-connected consumption method of distributed energy according to claim 1, wherein the completing the transmission of the electric energy between the energy supply point and the energy consumption point based on the shortest distance comprises:
The converter which needs energy transmission at present is taken as an origin, and the matched converter is searched in a certain range;
after determining the amount of power transfer, power transfer is performed.
3. The distributed energy flexible grid tie-down method of claim 2, wherein said transmitting of electrical energy after determining the amount of electrical energy transmitted comprises:
determining the electric energy which can be provided by the energy supply point and the electric energy which is required by the energy consumption point;
If the electric energy of the energy consumption point cannot be met within a certain range, the electric energy of part of the energy consumption point outside the range is called;
If the energy of the energy supply points is surplus within a certain range, the surplus energy is transmitted to the energy consumption points outside the range.
4. The method for flexible grid-tie-in consumption of distributed energy according to claim 1, wherein said disposing a plurality of converters at different locations in the target area comprises:
An energy storage station is arranged between the energy consumption point and the converter, and the energy storage station receives the electric energy transmitted by the converter and transmits the electric energy to the energy consumption point according to the requirement.
5. The method of distributed energy flexible grid-tie absorption of claim 4, wherein the energy storage station receiving the electrical energy from the converter and transmitting the electrical energy to the energy consumption point as required comprises:
and if the energy supply point and the energy consumption point are correspondingly connected with the same converter, connecting the energy supply point with the energy storage station, and transferring the electric energy of the energy supply point to the energy consumption point by means of the energy storage station.
Priority Applications (1)
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| CN102868161A (en) * | 2012-10-23 | 2013-01-09 | 四川大学 | Optimization method of network variable structure with distributed type power supply distribution system |
| CN110429657A (en) * | 2019-09-10 | 2019-11-08 | 周封 | Distributed flexible grid-connected power generation system based on the more substation cluster-coordinators of distribution |
| CN114301064A (en) * | 2021-12-30 | 2022-04-08 | 国网河南省电力公司经济技术研究院 | Distributed power supply absorption capacity improving method based on net rack flexibility and energy storage access |
| CN114336775A (en) * | 2021-11-23 | 2022-04-12 | 国网浙江省电力有限公司嘉兴供电公司 | Power distribution network scheduling control system and method including distributed energy access |
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| CN102130451B (en) * | 2011-03-03 | 2014-09-17 | 苏州盖娅智能科技有限公司 | Distributed power station system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102868161A (en) * | 2012-10-23 | 2013-01-09 | 四川大学 | Optimization method of network variable structure with distributed type power supply distribution system |
| CN110429657A (en) * | 2019-09-10 | 2019-11-08 | 周封 | Distributed flexible grid-connected power generation system based on the more substation cluster-coordinators of distribution |
| CN114336775A (en) * | 2021-11-23 | 2022-04-12 | 国网浙江省电力有限公司嘉兴供电公司 | Power distribution network scheduling control system and method including distributed energy access |
| CN114301064A (en) * | 2021-12-30 | 2022-04-08 | 国网河南省电力公司经济技术研究院 | Distributed power supply absorption capacity improving method based on net rack flexibility and energy storage access |
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