CN111062773B - Virtual power plant transaction management system - Google Patents
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Abstract
The invention provides a virtual power plant transaction management system which comprises an internal electricity price determining stage, a user transaction matching stage, a contract determining stage, a transaction executing stage and a transaction settlement stage, wherein the transaction management system adopts a block chain distributed system to complete internal transaction of a virtual power plant and transaction with a power grid through the internal electricity price determining stage, the user transaction matching stage, the contract determining stage, the transaction executing stage and the transaction settlement stage. The invention provides a transaction management system of a virtual power plant, which can intelligently monitor the execution state and the execution condition of a transaction contract and improve the power utilization benefit and the productivity value of users in the virtual power plant.
Description
Technical Field
The invention belongs to the technical field of virtual power plants, and particularly relates to a transaction management system of a virtual power plant.
Background
With the appearance of the problems of fossil energy exhaustion, environmental pollution and the like, clean renewable distributed new energy power generation gradually becomes the focus of people attention. Distributed new energy sources are increasingly showing the development trend of good penetration and high density when being connected into a power distribution network. The power distribution network can provide electric energy for loads of the micro-grid and can also receive electric energy from new energy of the micro-grid, the original unidirectional trend of the power distribution network is changed into bidirectional trend, and the energy structure becomes more complex. Meanwhile, wind power generation and photovoltaic power generation are influenced by objective factors such as geography and climate, and power generation has the characteristics of randomness, intermittency and instability, so that the energy distribution of the power distribution network has greater uncertainty, the output power is unstable, the power distribution network has greater impact on the power grid during grid connection, and people are looking for a mode of distributed new energy power generation to participate in the power market.
The virtual power plant technology does not change the grid-connected mode of each distributed power supply, but aggregates distributed energy sources of different types such as distributed power supplies, energy storage systems, controllable loads, electric vehicles and the like through advanced control, metering, communication and other technologies, and realizes the coordinated optimization operation of a plurality of distributed energy sources through a higher-level software framework, thereby being more beneficial to the reasonable optimization configuration and utilization of resources, improving the utilization rate of the distributed energy sources, realizing the active management of a power distribution network, and effectively reducing the quantity of centralized power plants through integrating more distributed power supplies, thereby optimizing the investment cost of the power distribution network and a power transmission network.
The invention provides a virtual power plant transaction management system, which selects different prices and transaction modes according to the internal actual conditions of a virtual power plant, improves the power utilization benefit and the productivity value of users in the virtual power plant, and adopts a block chain distributed system to perform transaction to monitor the execution state and the execution condition of a transaction contract in real time.
Disclosure of Invention
The invention provides a transaction management system of a virtual power plant, which can intelligently monitor the execution state and the execution condition of a transaction contract and improve the power utilization benefit and the capacity value of users in the virtual power plant.
The invention particularly relates to a virtual power plant transaction management system which comprises an internal electricity price determining stage, a user transaction matching stage, a contract determining stage, a transaction executing stage and a transaction settlement stage, wherein the transaction management system adopts a block chain distributed system to complete internal transactions of a virtual power plant and transactions with a power grid through the internal electricity price determining stage, the user transaction matching stage, the contract determining stage, the transaction executing stage and the transaction settlement stage respectively.
And the internal electricity price determining stage determines according to the total electricity purchasing power and the total electricity selling power of the virtual power plant: if the total electricity selling power is equal to zero, the photovoltaic capacity of all users in the virtual power plant is insufficient or equal to zero, and all the users in the virtual power plant can only use the price p 1 Purchasing electrical energy from the electrical grid; if total power selling power is greater than zero and is less than total power purchasing power, surplus electric energy needs to be sold in the surplus user's productivity in virtual power plant, partial user's energy shortage need to electric energy is purchased to the electric wire netting, just in the virtual power plant total energy shortage need to electric energy is purchased to the electric wire netting, virtual power plant selects the minimum price to carry out inside transaction, with p 1 The price is purchased from the power grid, so that the electricity purchasing cost of the electricity purchasing user is as low as possible, the electricity utilization efficiency of the electricity selling user is as high as possible, and the lowest price is lower than p 1 (ii) a If total selling electric power is greater than total purchasing electric power, surplus electric energy needs to be sold in surplus user's productivity in virtual power plant, and electric energy needs to be purchased in the shortage of partial user's productivity, just total energy surplus in the virtual power plant needs to the electric wire netting is sold, virtual power plant selects the highest price to carry out inside transaction, with p 2 Selling electric energy to the grid at a price, the maximum price being higher than p 2 。
And the contract determining stage is used for determining a trading contract according to the user electricity price and the electric energy trading volume in the virtual power plant:
step (1): the transaction initiator selects a transaction object according to the internal electricity price and the electric energy transaction amount of the virtual power plant and sends a transaction invitation to the object through a transaction platform;
step (2): the transaction receiver receives the transaction invitation;
and (3): the transaction receiver judges whether to carry out the transaction according to the transaction invitation, if the transaction is carried out, the step (5) is entered, if the transaction is not carried out, a reply of refusing the transaction is sent to the transaction initiator within 60 minutes or no reply is sent outside 60 minutes;
and (4): sending a transaction receiving reply to the transaction initiator within 60 minutes, and proposing a transaction requirement of the transaction receiver;
and (5): the two parties sign a trading contract, store the trading contract into a block chain in the form of codes, and record the trading contract into data blocks of the block chain after being broadcast and verified in the block chain distributed system.
The transaction execution stage intelligently finishes a scheduling task according to the content of the transaction contract, the user energy management system assists in controlling the power utilization behavior of the user according to the content of the transaction contract, the block chain distributed system monitors the execution state and the execution condition of the transaction contract in real time, and confirms that the transaction contract is triggered to execute a specific transaction or execute a specific action after the execution condition of the transaction contract is reached by inquiring external data.
And in the transaction settlement stage, after the transaction is finished, the transaction settlement is carried out according to the transaction contract content and the actual transaction condition, and the transfer of the transaction funds of both parties is intelligently finished.
Compared with the prior art, the beneficial effects are that: the transaction management system selects different prices and transaction modes according to the internal actual conditions of the virtual power plant, and adopts the block chain distributed system to perform transaction to monitor the execution state and the execution condition of the transaction contract in real time, so that the power utilization benefit, the capacity value and the settlement period of users in the virtual power plant are improved.
Drawings
FIG. 1 is a schematic diagram of a virtual power plant transaction management system according to the present invention.
Detailed Description
The following describes in detail a specific embodiment of a virtual power plant transaction management system according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the transaction management system of the present invention includes an internal electricity price determining stage, a user transaction matching stage, a contract determining stage, a transaction executing stage, and a transaction settling stage, wherein the transaction management system adopts a block chain distributed system to complete the internal transaction of the virtual power plant and the transaction with the power grid through the internal electricity price determining stage, the user transaction matching stage, the contract determining stage, the transaction executing stage, and the transaction settling stage, respectively; the block chain is used for recording the interaction information of each transaction participant in a chain structure in a general ledger distributed accounting mode, and the transaction information is properly stored in a block mode.
Determining the internal electricity price and the electricity supply and sale condition according to the total electricity purchasing power and the total electricity sale power of the virtual power plant:
if the total electricity selling power is equal to zero, the photovoltaic capacity of all the users in the virtual power plant is insufficient or equal to zero, and all the users in the virtual power plant can only use the price p 1 Purchasing electrical energy from an electrical grid;
if the total electricity selling power is larger than zero and smaller than the total electricity purchasing power, the excess electricity needs to be sold when the partial users in the virtual power plant have excess capacity, the electric energy needs to be purchased from the power grid when the partial users have insufficient capacity, the electricity needs to be purchased from the power grid when the total energy in the virtual power plant is insufficient, and the virtual power plant selects the lowest price to perform internal transaction and uses p as the internal transaction 1 The price is purchased from the power grid, so that the electricity purchasing cost of the electricity purchasing user is as low as possible, the electricity utilization benefit of the electricity selling user is as high as possible, and the minimum price is lower than p 1 ；
If the total electricity selling power is larger than the total electricity purchasing power, the excess electricity needs to be sold if the partial users in the virtual power plant have excess capacity, the electric energy needs to be purchased if the partial users have insufficient capacity, the total energy in the virtual power plant is excess and the electricity needs to be sold to the power grid, the virtual power plant selects the highest price to perform internal transaction, and the highest price is used for selling the electricity by p 2 Selling electric energy to the power grid at a price of more than p 2 。
And in the contract determining stage, determining a trading contract according to the user electricity price and the electric energy trading volume in the virtual power plant:
step (1): the transaction initiator selects a transaction object according to the internal electricity price of the virtual power plant and the electric energy transaction amount, and sends a transaction invitation to the transaction object through the transaction platform; step (2): the transaction receiver receives the transaction invitation; and (3): the transaction receiver judges whether to carry out the transaction according to the transaction invitation, if the transaction is carried out, the step (5) is carried out, if the transaction is not carried out, a reply of refusing the transaction is sent to the transaction initiator within 60 minutes or the reply is not sent out beyond 60 minutes; and (4): sending a transaction receiving reply to the transaction initiator within 60 minutes, and proposing a transaction requirement of the transaction receiver; and (5): the two parties sign a transaction contract, store the contract into the blockchain in the form of codes, and record the contract into the data blocks of the blockchain after being broadcast and verified in the blockchain distributed system.
In the transaction execution stage, the transaction contract content intelligently completes a scheduling task, a user energy management system assists in controlling the power utilization behavior of a user according to the transaction contract content, a block chain distributed system monitors the execution state and the execution condition of the transaction contract in real time, and confirms that the transaction contract is triggered to execute a specific transaction or execute a specific action after the execution condition of the transaction contract is reached by inquiring external data.
In the transaction settlement stage, after the transaction is finished, the transaction settlement is carried out according to the transaction contract content and the actual transaction condition, and the transfer of the transaction funds of both parties is intelligently finished.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various modifications and equivalents may be made to the embodiments of the invention as described herein, and such modifications and variations are intended to be within the scope of the claims appended hereto.
Claims (3)
1. The transaction management system is characterized by comprising an internal electricity price determining stage, a user transaction matching stage, a contract determining stage, a transaction executing stage and a transaction settlement stage, wherein the transaction management system adopts a block chain distributed system to complete internal transaction of the virtual power plant and transaction with a power grid through the internal electricity price determining stage, the user transaction matching stage, the contract determining stage, the transaction executing stage and the transaction settlement stage;
and the internal electricity price determining stage determines according to the total electricity purchasing power and the total electricity selling power of the virtual power plant: if the total electricity selling power is equal to zero, the photovoltaic capacity of all users in the virtual power plant is insufficient or equal to zero, and all the users in the virtual power plant can only use the price p 1 Purchasing electrical energy from the electrical grid; if total power selling power is greater than zero and is less than total power purchasing power, surplus electric energy needs to be sold in the surplus user's productivity in virtual power plant, partial user's energy shortage need to electric energy is purchased to the electric wire netting, just in the virtual power plant total energy shortage need to electric energy is purchased to the electric wire netting, virtual power plant selects the minimum price to carry out inside transaction, with p 1 The price is the electric energy purchased from the power grid, so that the electricity purchasing cost of the electricity purchasing users is as low as possible, the electricity utilization efficiency of the electricity selling users is as high as possible, and the minimum price is lower than p 1 (ii) a If total power of selling electricity is greater than total power of buying, surplus electric energy needs to be sold to surplus user's productivity in virtual power plant, and electric energy needs to be purchased to partial user's productivity shortage, just total power is surplus in the virtual power plant, need to the electric wire netting electricity of selling, virtual power plant selects the highest price to carry out inside transaction, with p 2 Selling electric energy to the grid at a price, the maximum price being higher than p 2 ；
And in the contract determining stage, determining a trading contract according to the user electricity price and the electric energy trading volume in the virtual power plant:
step (1): the transaction initiator selects a transaction object according to the internal electricity price and the electric energy transaction amount of the virtual power plant and sends a transaction invitation to the object through a transaction platform;
step (2): the transaction receiver receives the transaction invitation;
and (3): the transaction receiver judges whether to carry out the transaction according to the transaction invitation, if the transaction is carried out, the step (5) is carried out, if the transaction is not carried out, a reply of refusing the transaction is sent to the transaction initiator within 60 minutes or the reply is not sent out beyond 60 minutes;
and (4): sending a transaction receiving reply to the transaction initiator within 60 minutes, and proposing a transaction requirement of the transaction receiver;
and (5): the two parties sign a transaction contract, store the contract into a block chain in the form of codes, and record the contract into a data block of the block chain after broadcasting and verification in the block chain distributed system.
2. The virtual power plant transaction management system of claim 1, wherein the transaction execution stage intelligently completes scheduling tasks according to the content of the transaction contract, the user energy management system assists in controlling the power consumption behavior of the user according to the content of the transaction contract, the blockchain distributed system monitors the execution state and the execution condition of the transaction contract in real time, and confirms that the transaction contract is triggered to execute a specific transaction or execute a specific action after the execution condition of the transaction contract is reached by inquiring external data.
3. The virtual power plant transaction management system of claim 2, wherein in the transaction settlement stage, after the transaction is completed, the transaction settlement is performed according to the content of the transaction contract and the actual transaction condition, and the transfer of the transaction funds of both parties is intelligently completed.
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| CN116562914A (en) * | 2023-05-25 | 2023-08-08 | 浙江浙能能源服务有限公司 | Transaction management system for virtual power plant |
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| JP2006260088A (en) * | 2005-03-16 | 2006-09-28 | Chubu Electric Power Co Inc | Power transaction evaluation support system and method, program, server and terminal |
| CN107565557A (en) * | 2017-09-27 | 2018-01-09 | 赫普科技发展（北京）有限公司 | A kind of virtual accumulator cell charging and discharging management system of block chain |
| CN107798437A (en) * | 2017-11-10 | 2018-03-13 | 武汉大学 | A kind of power trade business trading object based on Conditional Lyapunov ExponentP chooses optimization method |
| CN108520437A (en) * | 2018-03-30 | 2018-09-11 | 天津大学 | The VPP market mechanisms of wind electricity digestion are improved based on customer charge curve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006260088A (en) * | 2005-03-16 | 2006-09-28 | Chubu Electric Power Co Inc | Power transaction evaluation support system and method, program, server and terminal |
| CN107565557A (en) * | 2017-09-27 | 2018-01-09 | 赫普科技发展（北京）有限公司 | A kind of virtual accumulator cell charging and discharging management system of block chain |
| CN107798437A (en) * | 2017-11-10 | 2018-03-13 | 武汉大学 | A kind of power trade business trading object based on Conditional Lyapunov ExponentP chooses optimization method |
| CN108520437A (en) * | 2018-03-30 | 2018-09-11 | 天津大学 | The VPP market mechanisms of wind electricity digestion are improved based on customer charge curve |
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