CN111402047A - Distributed power supply regional power dispatching system and method based on block chain - Google Patents
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Abstract
The invention discloses a distributed power supply regional power dispatching system and method based on a block chain, which are applied to a target block chain, wherein sellers and buyers are respectively registered as nodes on a block chain platform, the expected electricity price of the buyer and the electricity price of the seller are matched, and the seller with the matched electricity price is selected from a seller queue; the buyer and the seller sign an intelligent contract; the power scheduling module schedules the seller's power to the buyer according to the intelligent contract. The power dispatching method greatly improves the trust integrity of point-to-point transaction information and greatly improves the transparency and safety of transactions.
Description
Technical Field
The invention relates to the field of power scheduling, in particular to a distributed power supply regional power scheduling system and method based on a block chain.
Background
The green electric power refers to the electric power of clean and non-fossil energy sources such as solar energy, wind power, hydroelectric power, nuclear power and the like. These power generation methods usually have the characteristics of autonomous production, self-consumption, autonomous storage and tradable transaction of consumers. From a global perspective, the traditional green electricity trade is to sell electricity to the national grid. The principle of our country's solar energy generation is ' self-generation, surplus electricity on-line and power grid regulation '. The electricity produced by the clean energy is used by itself, and the surplus electricity is transmitted to the power grid. Therefore, the traditional green energy transaction is the transaction of C2G, i.e. the transaction mode to the national power grid, and direct point-to-point green electricity transaction cannot be carried out. This is policy driven, on the one hand, the lack of tradable platforms and technologies, which discourages trading and consumption of clean energy.
However, with the technical progress of green energy power generation, the electricity consumption cost L COE of power generation is continuously reduced, the reaction of the electricity price is often lagged, and in the scene of distributed power generation, families, hospitals, schools, factory roofs and the cost of green energy power generation depend on various factors, namely system cost, sunlight, wind power and other natural factors, so that in essence, the power generation cost of green power fluctuates relatively, so that a flexible price mechanism capable of correspondingly matching the power generation cost price and a corresponding real-time trading system capable of correspondingly matching the power generation cost price are required to be provided for matching and trading between a power generation side and a power utilization side, and further, the matching of the power generation cost mechanism and the corresponding real-time trading system can be promoted to be matched with the power generation cost and the power utilization side, and the power generation load of the power generation system can be clearly matched, and the power generation burden of the power generation side and the power consumption of the power grid can be reduced, and the pollution of the power grid can be reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the green power dispatching system and method based on the block chain are invented, and the transparency and the safety of point-to-point power transaction are greatly improved.
The technical scheme provided by the invention is as follows: a distributed power supply regional power dispatching method based on a block chain is characterized in that a plurality of sellers and buyers are respectively registered as nodes on a block chain platform, and the specific steps are as follows:
s1, constructing a seller price queue;
s2: matching the prices of the seller and the buyer;
s3: implementing a non-repudiation transaction by means of a smart contract;
s4: and carrying out power dispatching according to the intelligent contract.
The seller price queue in S1 is constructed based on the seller' S electricity price; the S2 further includes the steps of: selecting a seller matched with the buyer expected electricity price from the seller price queue; the S3 further includes the steps of: the method comprises the steps that a buyer and a seller matched with the buyer in price sign an intelligent contract, and the intelligent contract is sent to a power dispatching module; the S4 further includes the steps of: the power scheduling module schedules seller power to buyers according to the intelligent contracts. The price queue in S1 is specifically the price queue
(ii) a When a new seller is inserted into the queue, the queue is updated to
When the seller exits the queue, the queue is updated to
Or
Wherein P is0Representing electricity price, P, of the 1 st seller1Representing the electricity price of the 2 nd seller, Pn-2Representing the electricity price, P, of the (n-1) th sellern-1Representing the electricity price of the nth seller, PnElectric price representing the (n + 1) th seller, 0mRepresenting the empty space left by the exit,
。
the seller price queue is divided into a plurality of sub-queues based on the area where the seller is located, a sample variance S and an average electricity price Pm of the electricity price in a certain area are calculated by sampling a large amount of electricity price data in the area, and when a new seller inserts into the seller price queue based on the electricity price, the new seller electricity price
When the new seller is inserted into the average price of electricity PmIn sub-queues
。
The S2 further includes the steps of: s21: when the buyer desires the price
Selecting the sub-queues with the average electricity price of Pm as target matched price queues in the price interval; s21: selecting a seller in the target matching price queue, and when the price P of a seller in the target matching price queue is upqSatisfy the requirement of
Wherein, in the step (A),
，
if the matching error is found, the price in the price queue of the target matching is PqSet as the seller matching the buyer.
The S3 further includes the steps of: determining a transaction pair, namely a buyer and a seller, transaction electric quantity, and a fund account and an electric account of the buyer and the seller, taking the electric price of the seller matched with the buyer determined in the step S2 as a transaction electric price, obtaining a transaction amount based on the transaction electric price and the transaction electric quantity, matching a payment mode with an intelligent contract, calling a third-party interface to complete payment of the transaction amount and clearing of the electric quantity, and finally forming a transaction order.
The transaction orders are sequenced and packaged to all nodes on the blockchain transaction platform after being identified by all nodes or part of nodes of the blockchain transaction platform, and a transaction record used for tracing, auditing and not being tampered is formed; the consensus process is to verify the validity, correctness and completeness of the trade order: the transaction record content includes at least: the transaction body, the transaction price, the transaction time and the transaction electric quantity.
The system comprises: the system comprises a block chain platform, a deployment module, a matching module, a signing module and an electric power scheduling module; a plurality of sellers and buyers are respectively registered as nodes on the block chain platform, and a seller price queue is constructed by the deployment module based on the electricity price of the seller; the matching module matches the expected electricity price of the buyer with the electricity price of the seller, and selects the seller with the matched electricity price from the seller price queue; the signing module is used for signing an intelligent contract by a buyer and a seller matched with the electricity price and sending the intelligent contract to the power scheduling module and nodes on the block chain platform; the power scheduling module is used for scheduling the power of the seller to the buyer according to the intelligent contract.
The price queue is specifically
(ii) a When a new seller is inserted into the queue, the queue is updated to
When the seller exits the queue, the queue is updated to
Or
Wherein P is0Representing electricity price, P, of the 1 st seller1Representing the electricity price of the 2 nd seller, Pn-2Representing the electricity price, P, of the (n-1) th sellern-1Representing the electricity price of the nth seller, PnElectric price representing the (n + 1) th seller, 0mRepresenting the empty space left by the exit,
. Determining a transaction pair, namely a buyer and a seller, transaction electric quantity, and a fund account and an electric account of the buyer and the seller, taking an electric price of the seller matched with the buyer as a transaction electric price, obtaining a transaction amount based on the transaction electric price and the transaction electric quantity, matching a payment mode with an intelligent contract, calling a third-party interface to complete payment of the transaction amount and clearing of the electric quantity, and finally forming a transaction order; the transaction orders are sequenced and packaged to all nodes on the blockchain transaction platform after being identified by all nodes or part of nodes of the blockchain transaction platform, and a transaction record used for tracing, auditing and not being tampered is formed; the consensus process is to verify the validity, correctness and completeness of the trade order: the transaction record content includes at least: the transaction body, the transaction price, the transaction time and the transaction electric quantity.
The power dispatching system and the method have the advantages that the validity, the integrity and the like of the transaction are verified through a consensus mechanism, so that the information and the trust integrity of point-to-point transaction are greatly improved, each transaction node can theoretically acquire each transaction record and an account book synchronized to the whole network, malicious nodes are prevented, the transparency and the safety of the transaction are greatly improved, and the fraudulent behaviors of an electricity buying party and an electricity selling party are avoided.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of an embodiment of a distributed power supply regional power scheduling method based on a block chain;
FIG. 2 is a block diagram of a distributed power source regional power scheduling system based on a block chain according to an embodiment of the disclosure;
FIG. 3 is a schematic diagram of an embodiment of a distributed power supply regional power scheduling based on a block chain;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a distributed power supply regional power dispatching system and method based on a block chain, which are applied to the transaction process of power energy, and utilize the characteristics of non-falsification and traceability of an intelligent contract in the block chain to reduce the fraudulent conduct of a buyer and a seller, and erect a good credit bridge.
The block chain-based distributed power supply regional power scheduling method has the flow shown in fig. 1, and includes the following steps:
the first step is as follows: constructing a seller price queue;
suppose there are n selling electricity, each with price of P, and P>0. The seller price may be defined as P [ N ], where N =0. So that a price index queue comprising n price index queues can be constructed
= P0, P1.. Pn-1 }. Wherein P0<P1<P2..<Pn-1. The problems of queue joining, queue exiting and queue splitting are discussed in three cases below.
Case 1: n +1 join queue
Assuming that the current electricity selling queue is an ordered array, the members to be added into the ordered array currently can choose to adopt various sorting algorithms on time overhead and complexity to realize the insertion of the current price index Pn into the original electricity selling queue
Thereby forming a price index queue containing n +1 price indexes
={P0,P1,...Pn-1,Pn}。
Case 2: m retire queue
If a certain queue needs to be quitted or no transactable electric quantity exists, the corresponding position in the queue can be deleted, the length of the queue is marked again, or the original position is marked directly and set to be 0, and the length of the queue is not changed. In order to later match a certain buyer price. Quit transaction, price index queue changes to
= P0, P1.. Pn-2 or
={P0,P1,...
,.. The benefit of the latter is that any retirement, transaction price queue length is unchanged, and the order is unchanged. The former has the advantages of quitting, shortening the length of the queue, and having higher matching efficiency than the latter, but the order of the queue is rearranged.
Case 3: queue splitting
When the length of a single queue is linearly increased, the calculation of inserting the queue and matching the electricity price of the buyer increases the calculation overhead, for example, the time complexity of inserting the sequence is O (
)，The larger n, the more exponential the computational time complexity increases. For matching the electricity prices of the buyers in real time, time efficiency is not optimized, so that the queue is considered to be split. The splitting is to split the electricity price into a plurality of queues according to a certain price interval, and the specific number of the split queues is determined according to the density and the variance of the electricity price distribution. In particular practice, electricity prices typically have an average price per region, with market prices fluctuating around the average price. Thus, the electricity rate queue can be split by region if the average electricity rate of a certain region is defined as
The sample variance of a region is calculated by sampling a large amount of electricity price data of the region
When the electricity price of a certain area
At that time, the electricity prices can be added to the regional electricity price queue
And sorted from high to low or from high to low. Therefore, the whole seller price queue is composed of a plurality of regional price subqueues, the length of the queue is obviously shortened compared with a single queue, and meanwhile, the queue is designed according to the model, and the method has an optimization effect on a subsequent matching search calculation method.
The second step is that: matching the prices of the seller and the buyer;
at the time of transaction, a desired price is first given by the buyer
. Then matching is carried out from the price queue of the seller, the matching process is that the price interval of the area is matched firstly, if so, the price interval is matched
Within the price interval of this zone, i.e.Then the price queue of the target matching is found first, and the computation complexity of the matching process is
Where n represents the number of regional electricity rate queues. The next step is to
Is found to be equal to or close to
The value and position of (c). First, a matching error is defined
>0, this is
It will affect the speed and accuracy of matching and depend on various factors and policies set according to the platform in the business model, such as the price of the matched seller is higher than that of the matched seller
Then the electricity purchase may not be acceptable, and may be more or less appropriate, possibly within a certain range, and also acceptable. If the matched electricity price is lower than
The benefit of the seller may be impaired, and the seller is unwilling, so that it is desirable that the electricity prices of the buyer and the seller are completely equal and accurately matched. In fact, to achieve the above result, one situation is possible, but requires a full traversal of the transaction pool (transaction pool consisting of transaction queues), and one situation is that even after a traversal, no perfectly matching value is found. So whether to find the optimal or sub-optimal solution. Sub-optimal means sacrificing accuracy, improving matching degree and matching time, and is a comprehensive consideration balancing matchability, computation time and complexity. The process of matching is to find the target queue
So that
How to find a solution according to the above formula
Due to the fact that
In an ordered queue, a binary search method plus a step length method is needed, namely, the value is taken from the middle position of the queue each time for size comparison, then whether the search direction is towards the big or towards the small is judged, and the two steps are circulated
Error, so that when the target value approaches
In time, the step length can be reduced
So that the user can easily and conveniently select the required position,
for example, the binary search is converted into the logarithmic step search, so that the search efficiency can be further improved, and the computing resources can be saved. If the seller's price satisfying the formula is found, it is recorded
The corresponding position N and the electricity price p. N corresponds to the sell price and p corresponds to the seller price closest to the buyer's ideal price, so the final unit price of electricity for a deal is the price p corresponding to the customer N. The total price of the final transaction is the amount of electricity purchased
。
The third step: the method comprises the steps that a non-repudiation transaction is realized through an intelligent contract, and a power dispatching module dispatches power of a seller to a buyer according to the intelligent contract;
after the electricity price matching is successful, the following step is to complete the transaction. The subsequent transaction process includes order generation, payment and power delivery. The intelligent contract is mainly to complete the clearing and settlement of funds and electric power, namely, the link of 'accounting' is completed.
First, the intelligent contract is to determine a transaction pair, i.e., buyer and buyer, the buyer and buyer's fund account and power account. And based on the transaction price determined in the second step, automatic clearing and settlement based on the electricity price and the electric quantity are realized, and finally, an electric power delivery request is initiated to the power grid by an intelligent contract, and the electric power delivery is finally completed by the electric power system. Therefore, in the green power trading, whenever the intelligent contract receives a trading pair which has already reached the trading interest, a trading contract is initiated on the chain in real time, and the flow and the content of the trading contract are as follows:
TX_SC
{
buyer id:
seller id:
the buyer account:
the buyer account:
the payment method comprises the following steps:
automatically clearing based on the transaction electricity price and the electric quantity;
initiating a power delivery request to a power grid
}
Aiming at the order in the transaction, an intelligent contract is designed to complete the transaction process, the intelligent contract needs to match with a payment mode, call a third-party interface to complete payment and clearing of electric quantity, and finally a transaction order is formed. The transaction order is subjected to the consensus of all nodes or part of nodes (fragmentation consensus) of the p2p network, the consensus process is to verify the validity, correctness and integrity of the transaction record, and once the consensus passes, the transaction record is packaged into a block by the sequencing node and is linked to the previous block to form a traceable, auditable and non-falsifiable transaction record. At this time, the smart contract may initiate a request for power delivery to the power grid to complete the entire closed-loop transaction. If the consensus fails and the transaction is rejected by the network, the transaction content is checked by the system and the transaction request can be initiated again after waiting. The transaction record Tx _ hedger includes the following contents:
{
transaction body
Transaction price
Transaction time
Transaction amount of electricity
}
The intelligent contract has the characteristics of non-revocable property and denial prevention, so that the credibility of the transaction can be greatly improved. The transaction record uplink is helpful for credibly checking the transaction history, and the price model of the system and the price model of the customer have basic credible data support function for counting and analyzing the electricity purchasing behavior of the customer.
Based on the above green power scheduling method based on the blockchain, in the embodiment of the present invention, there is also provided a green power scheduling system based on the blockchain, which is applied to the blockchain, where the blockchain includes a seller node and a buyer node, where the seller node and the buyer node store an intelligent contract, the intelligent contract is used to issue the demands of the seller node and the buyer node and complete the power transaction between the seller node and the buyer node, and the green power scheduling system based on the blockchain has a structure as shown in fig. 2, and the system includes: the system comprises a block chain platform, a deployment module, a matching module, a signing module and an electric power scheduling module; a plurality of sellers and buyers are respectively registered as nodes on the block chain platform, and a seller price queue is constructed by the deployment module based on the electricity price of the seller; the matching module matches the expected electricity price of the buyer with the electricity price of the seller, and selects the seller with the matched electricity price from the seller price queue; the signing module is used for signing an intelligent contract by a buyer and a seller matched with the electricity price and sending the intelligent contract to the power scheduling module and nodes on the block chain platform; the power scheduling module is used for scheduling the power of the seller to the buyer according to the intelligent contract. The block chain-based green power dispatching schematic is shown in fig. 3, a seller can be a distributed power supply such as photovoltaic power generation, wind power generation, thermal power generation and the like, and a buyer can be a residential area, an electric vehicle charging station, a factory and the like. The buyer and the seller realize a non-repudiation transaction through an intelligent contract, and the power dispatching module dispatches the power of the seller to the buyer according to the intelligent contract. The intelligent contract may include: the method comprises the steps that contents such as buyer id, seller id, buyer account, payment mode, transaction subject, transaction price, transaction time and transaction electric quantity are identified through all nodes of a p2p network or part of nodes (fragmentation identification), the identification process is to verify the validity, correctness and integrity of transaction records, once the identification passes, the transaction records are packaged into blocks by sequencing nodes and are linked to the previous blocks to form traceable, auditable and non-tamperable transaction records.
The present invention is not limited to the disclosed embodiments and the accompanying drawings, and is intended to cover various changes and modifications that fall within the spirit and scope of the invention.
Claims (10)
1. A distributed power supply regional power dispatching method based on a block chain is characterized in that: a plurality of sellers and buyers are respectively registered as nodes on the blockchain platform, and the specific steps are as follows:
s1, constructing a seller price queue;
s2: matching the prices of the seller and the buyer;
s3: a non-repudiation transaction is realized through an intelligent contract, and the power dispatching module dispatches the power of the seller to the buyer according to the intelligent contract.
2. The power scheduling method of claim 1, wherein: the seller price queue in S1 is constructed based on the seller' S electricity price; the S2 further includes the steps of: selecting a seller matched with the buyer expected electricity price from the seller price queue; the S3 further includes the steps of: and the buyer and the seller matched with the price of the buyer sign an intelligent contract, and the intelligent contract is sent to the power dispatching module.
3. The power scheduling method of claim 2, wherein: the price queue in S1 is specifically the price queue
(ii) a When a new seller is inserted into the queue, the queue is updated to
When the seller exits the queue, the queue is updated to
Or
Wherein P is0Representing electricity price, P, of the 1 st seller1Representing the electricity price of the 2 nd seller, Pn-2Representing the electricity price, P, of the (n-1) th sellern-1Representing the electricity price of the nth seller, PnElectric price representing the (n + 1) th seller, 0mRepresenting the empty space left by the exit,
。
4. the power scheduling method of claim 3, wherein: based onThe method comprises the steps that a seller price queue is divided into a plurality of sub-queues in an area where a seller is located, a sample variance S and an average electricity price Pm of the electricity price in a certain area are calculated by sampling a large amount of electricity price data in the certain area, and when a new seller is inserted into the seller price queue based on the electricity price, the new seller electricity price
When the new seller is inserted into the average price of electricity PmIn sub-queues
。
5. The power scheduling method of claim 4, wherein: the S2 further includes the steps of: s21: when the buyer desires the price
Selecting the sub-queues with the average electricity price of Pm as target matched price queues in the price interval; s21: selecting a seller in the target matching price queue, and when the price P of a seller in the target matching price queue is upqSatisfy the requirement of
Wherein, in the step (A),
，
if the matching error is found, the price in the price queue of the target matching is PqSet as the seller matching the buyer.
6. The power scheduling method of claim 1, wherein: the S3 further includes the steps of: determining a transaction pair, namely a buyer and a seller, transaction electric quantity, and a fund account and an electric account of the buyer and the seller, taking the electric price of the seller matched with the buyer determined in the step S2 as a transaction electric price, obtaining a transaction amount based on the transaction electric price and the transaction electric quantity, matching a payment mode with an intelligent contract, calling a third-party interface to complete payment of the transaction amount and clearing of the electric quantity, and finally forming a transaction order.
7. The power scheduling method of claim 6, wherein: the transaction orders are sequenced and packaged to all nodes on the blockchain transaction platform after being identified by all nodes or part of nodes of the blockchain transaction platform, and a transaction record used for tracing, auditing and not being tampered is formed; the consensus process is to verify the validity, correctness and completeness of the trade order: the transaction record content includes at least: the transaction body, the transaction price, the transaction time and the transaction electric quantity.
8. The utility model provides a regional power dispatching system of distributed power supply based on block chain which characterized in that: the system comprises: the system comprises a block chain platform, a deployment module, a matching module, a signing module and an electric power scheduling module; the method comprises the steps that a plurality of sellers and buyers are respectively registered as nodes on a block chain platform, a deployment module constructs a seller price queue based on the electricity price of the seller, and the seller price queue is divided into a plurality of sub-queues based on the region where the seller is located; the matching module matches the expected electricity price of the buyer with the electricity price of the seller, and selects the seller with the matched electricity price from the seller price queue; the signing module is used for signing an intelligent contract by a buyer and a seller matched with the electricity price and sending the intelligent contract to the power scheduling module and nodes on the block chain platform; the power scheduling module is used for scheduling the power of the seller to the buyer according to the intelligent contract.
9. The power dispatching system of claim 8, wherein: the price queue is specifically
(ii) a When a new seller is inserted into the queue, the queue is updated to
When the seller exits the queue, the queue is updated to
Or
Wherein P is0Representing electricity price, P, of the 1 st seller1Representing the electricity price of the 2 nd seller, Pn-2Representing the electricity price, P, of the (n-1) th sellern-1Representing the electricity price of the nth seller, PnElectric price representing the (n + 1) th seller, 0mRepresenting the empty space left by the exit,
。
10. the power dispatching system of claim 9, wherein: determining a transaction pair, namely a buyer and a seller, transaction electric quantity, and a fund account and an electric account of the buyer and the seller, taking an electric price of the seller matched with the buyer as a transaction electric price, obtaining a transaction amount based on the transaction electric price and the transaction electric quantity, matching a payment mode with an intelligent contract, calling a third-party interface to complete payment of the transaction amount and clearing of the electric quantity, and finally forming a transaction order; the transaction orders are sequenced and packaged to all nodes on the blockchain transaction platform after being identified by all nodes or part of nodes of the blockchain transaction platform, and a transaction record used for tracing, auditing and not being tampered is formed; the consensus process is to verify the validity, correctness and completeness of the trade order: the transaction record content includes at least: the transaction body, the transaction price, the transaction time and the transaction electric quantity.
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