CN110689449A - Method and system for connecting medium-long term electric power market with spot market - Google Patents
Method and system for connecting medium-long term electric power market with spot market Download PDFInfo
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Abstract
The invention provides a method and a system for connecting a medium-long term electric power market with a spot market, which comprise the following steps: processing the transaction power information declared by each power market member according to time periods to form winning bid power information of buyers and sellers in the market members of each time period; connecting winning bid power information of each time period every day in a transaction period to obtain a power curve facing the spot market; the transaction electric power information is reported by time intervals based on the electric power unit. In the medium and long-term centralized bidding transaction, the medium and long-term centralized bidding transaction result directly comprises the power curve through time-share declaration and time-share processing, and can be connected with the spot market.
Description
Technical Field
The invention belongs to the technical field of power markets, and particularly relates to a method and a system for connecting a medium-long term power market and a spot market.
Background
After the spot market is operated, the medium and long term electricity trading must be developed to consider the connection problem with the spot market. In addition to the bilateral negotiation mode, a large part of transactions are achieved by adopting a centralized bidding transaction mode in the prior art. And the existing medium-long term centralized bidding trading results are in the form of electric quantity, and no electric power curve is formed, so that the existing market settlement cannot be entered. How to design a medium-long term centralized bidding trading method to be connected with the spot market is a problem which needs to be researched urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method and a system for connecting a medium-long term electric power market with a spot market. When the method and the system are released in a transaction, transaction time intervals are preset, a standard electric power commodity is defined based on each transaction time interval, and the transaction time intervals and the standard electric power are defined by the standard commodity. The buyer and seller declare the purchase, sale share and price for this standard commodity. And (4) aiming at the declaration data in each transaction period, carrying out segmented clearing according to transaction rules, wherein the winning result of the buyer and the seller is the power curve of winning the bid in different periods, and the winning result can be directly connected with the spot market without secondary conversion from electric quantity to power.
The adopted solution for realizing the purpose is as follows:
in a method for linking a medium-and-long-term power market to a spot market, the improvement comprising:
processing the transaction power information declared by each power market member according to time periods to form winning bid power information of buyers and sellers in the market members of each time period;
connecting winning bid power information of each time period every day in a transaction period to obtain a power curve facing the spot market;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation module configured based on the transaction period and standard power information.
In a first preferred aspect of the present invention, the improvement of the power unit comprises:
analyzing and determining peak time period, flat time period and valley time period according to the historical data of the load flow of the power grid;
taking the peak time period, the flat time period and the valley time period as transaction time periods of standard electric power commodities;
the standard power is determined according to transaction requirements.
The second preferred technical solution provided by the present invention is improved in that the analyzing and determining the peak time period, the flat time period and the valley time period according to the historical data of the load and the power flow of the power grid includes:
counting historical data according to the load flow of the power grid to obtain the average power consumption of each hour in each day;
and sequencing the power consumption of 24 hours a day according to unit time, and sequentially obtaining the time corresponding to the peak time period, the time corresponding to the ordinary time period and the time corresponding to the valley time period from large to small.
In a third preferred embodiment of the present invention, the improvement is that the transaction power information declared by each power market member is processed by time period to form winning bid power information of the buyer and the seller in the market member at each time period, and the method includes:
matching the price declared by the buyer and the seller in the power market members and the transaction power according to the transaction power information at each time period in the transaction period;
and forming the winning bid power and the winning bid price of the market member in each time period according to the matching result.
In a fourth preferred embodiment of the present invention, the improvement of the method further comprises, after obtaining the power curve associated with the spot market:
and connecting the winning bid price of the power market member in each day and each time period in the trading cycle to obtain a winning bid price curve of the power market member in the trading cycle.
In a fifth preferred aspect of the present invention, the improvement further includes, after obtaining the spot market-oriented power curve:
and according to the power curve, purchasing power to the sellers in the power market members in a time-sharing manner, and selling the purchased power to the buyers in the power market members.
In a system for linking a medium-and-long-term power market to a spot market, the improvement comprising: the power information processing module and the power curve module;
the electric power information processing module is used for processing the transaction electric power information declared by each electric power market member according to time periods to form winning bid electric power information of buyers and sellers in the market members of each time period;
the power curve module is used for connecting winning bid power information of each time period every day in a transaction period to obtain a spot market oriented power curve;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation module configured based on the transaction period and standard power information.
In a sixth preferred aspect, the present invention further comprises a power unit module for setting up a power unit, the power unit module including: the time interval division unit, the time interval formulation unit and the standard power unit;
the time interval division unit is used for analyzing and determining a peak time interval, a flat time interval and a valley time interval according to the historical data of the load flow of the power grid;
the time interval making unit is used for taking the peak time interval, the flat time interval and the valley time interval as transaction time intervals of standard electric power commodities;
and the standard power unit is used for determining standard power according to transaction requirements.
In a seventh preferred embodiment, the time division unit includes: a time interval counting subunit and a time interval dividing subunit;
the time interval counting subunit is used for counting historical data according to the load flow of the power grid to obtain the average power consumption of each hour in each day;
and the time interval dividing subunit is used for sequencing the power consumption of the time interval in 24 hours a day according to the unit time, and sequentially obtaining the time corresponding to the peak time interval, the time corresponding to the ordinary time interval and the time corresponding to the valley time interval from large to small.
The improvement of the eighth preferred technical proposal provided by the invention is that the electric power information processing module comprises a matching unit and a standard result unit;
the matching unit is used for matching the price declared by the buyer and the seller in the power market members and the transaction power according to the transaction power information at each time interval in the transaction period;
and the winning result unit is used for forming winning power and winning price per time interval according to the matching result.
Compared with the closest prior art, the invention has the following beneficial effects:
1) the method processes the transaction power information declared by each power market member according to time periods to form winning bid power information of buyers and sellers in the market members in each time period, and joins winning bid power information of each time period every day in a transaction period to obtain a power curve facing to the spot market. In the medium and long-term centralized bidding transaction, the medium and long-term centralized bidding transaction result directly comprises the power curve through time-share declaration and time-share processing, and can be connected with the spot market.
2) In the medium and long-term centralized bidding transaction, market members are allowed to declare electric power and electricity prices in different periods, so that the price signals of the spot market are favorably transmitted to different periods of the medium and long term, and the peak-valley difference of a power grid is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method for linking a medium-and-long-term power market with a spot market according to the present invention;
FIG. 2 is a schematic diagram of a basic structure of a connection system between a medium-and long-term power market and a spot market according to the present invention;
fig. 3 is a detailed structural diagram of a connection system between a medium-and-long-term power market and a spot market according to the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Example 1:
the flow diagram of the method for connecting the medium-long term electric power market and the spot market provided by the invention is shown in fig. 1, and comprises the following steps:
step 1: processing the transaction power information declared by each power market member according to time periods to form winning bid power information of buyers and sellers in the market members of each time period;
step 2: connecting winning bid power information of each time period every day in a transaction period to obtain a power curve facing the spot market;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation unit that is formulated based on the transaction period and the standard power information.
The general idea of the connection method between the medium-long term electric power market and the spot market is as follows:
in order to realize the connection between medium-long term centralized bidding transaction and spot market, the clearing of electric power transaction is realized by defining standard commodities, adopting a method of reporting in different time periods and processing in different time periods, and generating an electric power curve facing the spot market according to the clearing result.
In order to reduce the transaction number of the transaction, the transaction method adopting the connection method is characterized in that in each time period, when the transaction is cleared in a centralized mode, a single buyer and a single seller are not matched, the transaction center is matched with the buyer and the seller to complete the transaction respectively, namely all the sellers sell the electric quantity to the transaction center, and all the buyers purchase the electric quantity from the transaction center.
At the time of transaction release, a standard commodity is defined based on each transaction period, the standard commodity defines the transaction period (such as daily peak period, flat period and valley period) and the standard power (such as 0.1MW or 1MW), and the buyer and the seller declare the share and price of purchase and sale for the standard commodity. And then, the statement in each transaction period is cleared in a time-sharing mode according to transaction rules, so that the winning result of the buyer and the seller is the power curve of winning the bid in different time periods, and the winning result can be directly connected with the spot market without secondary conversion from electric quantity to power.
Specifically, the method for connecting the medium-long term electric power market with the spot market comprises the following steps:
step 101: standard electric power commodities, i.e. power units, are established.
For the medium and long term transaction to be carried out, a transaction time interval is set in advance according to the load of the power grid, such as: setting 8-16 points as peak time interval, 16-24 points as flat time interval and 0-8 points as valley time interval. Or a plurality of peak and valley periods, such as peak 1, peak 2, valley 1 and valley 2 periods, can be set according to the load peak-valley characteristics of the power grid. For example, statistics can be performed on historical data according to the load and flow of the power grid to obtain the average power consumption of each hour in each day; and then, sequencing the power consumption of the 24 hours a day according to the unit time, and sequentially obtaining the time corresponding to the peak time period, the time corresponding to the flat time period and the time corresponding to the valley time period from large to small.
And formulating standard commodities according to the set transaction time period, wherein the standard commodities comprise the transaction time period and standard electric power, and the standard electric power is formulated according to transaction requirements. Such as a standard commodity for peak periods: the trade period is a peak period and the trade power is 0.1MW (or 1 MW). And formulating a plurality of standard commodities according to the formulated transaction time period.
An example of a standard electrical commodity design is shown in table 1 below:
table 1-standard electric goods definition example
| Name of commodity | Time period | Standard electric power corresponding to each commodity |
| Off-peak time standard electric power commodity | 0: 00 to 8: 00 | 0.1MW |
| Peak time period standard electric power commodity | 8: 00 to 16: 00 | 0.1MW |
| Standard electric power commodity in normal time period | 16: 00 to 24: 00 | 0.1MW |
Step 102: and (4) transaction release and declaration.
And releasing the standard electric power commodity to market members, and informing the admitted market members to declare in a declaration window period. The seller market member and the buyer market member can declare different prices and share to be traded, namely trade power, for each standard commodity at different time periods.
Step 103: and clearing the transaction.
After the transaction declaration is finished, the electric power transaction center carries out time-sharing clearing on each standard commodity every day according to the agreed transaction clearing rule based on the acquired declaration information. Such as: and aiming at the peak time period of each day, matching and clearing are carried out according to the transaction power and the price declared by the buyer and the seller, so that winning power and electricity price of the buyer and the seller in each time period are formed. The winning bid power of the buyer and the seller in each time period of each day in the transaction period (month or year) is connected, namely a winning bid power curve facing the spot market in the transaction period. The winning bid price curves of the buyer and the seller in each time period of each day in the transaction period (month or year) are linked, and the winning bid price curve in the transaction period can be further obtained.
Further, when the medium and long term electricity market and the spot market are connected for trading, step 104 is included.
Step 104: and issuing the delivery receipt.
Because the time-sharing clearing is adopted, the same buyer can achieve transactions with different sellers at different time intervals, in order to avoid forming excessively trivial delivery lists, the transaction center achieves the delivery lists with the buyer and the sellers respectively, decoupling of the buyer and the sellers is achieved, and the quantity of the delivery lists is reduced.
Example 2:
an example of a specific application of the method for engaging the medium and long term electricity market with the spot market is given below.
Take the province company organization centralized bidding transaction as an example. The provincial company firstly appoints peak, average and valley time periods, and makes standard electric power commodities, and the standard electric power commodities are released to users and power generation enterprises to require the users to declare based on the standard electric power commodities. The established standard electric power commodities are shown in table 2.
TABLE 2 Standard electric power goods detailed information Table
| Name of commodity | Time period | Standard electric power |
| Off-peak time standard electric power commodity | 0: 00 to 8: 00 | 1MW |
| Peak time period standard electric power commodity | 8: 00 to 16: 00 | 1MW |
| Standard electric power commodity in normal time period | 16: 00 to 24: 00 | 1MW |
The power generation enterprises and users declare the situation as follows:
TABLE 3 statement of Power Generation Enterprise
| Market member | Buy/sell | Name of commodity | Portion(s) of | Price (Yuan/MWh) |
| Power generation Enterprise 1 | Sale | Off-peak time standard electric power commodity | 500 | 280 |
| Power generation Enterprise 1 | Sale | Peak time period standard electric power commodity | 500 | 320 |
| Power generation Enterprise 1 | Sale | Standard electric power commodity in normal time period | 500 | 300 |
| Power generation enterprise 2 | Sale | Off-peak time standard electric power commodity | 800 | 290 |
| Power generation enterprise 2 | Sale | Peak time period standard electric power commodity | 500 | 330 |
| Power generation enterprise 2 | Sale | Standard electric power commodity in normal time period | 500 | 310 |
TABLE 4 big user declaration case Table
| Market member | Buy/sell | Name of commodity | Portion(s) of | Price (Yuan/MWh) |
| Large user 1 | Shopping device | Off-peak time standard electric power commodity | 400 | 290 |
| Large user 1 | Shopping device | Peak time period standard electric power commodity | 400 | 320 |
| Large user 1 | Shopping device | Flat time interval standard electric powerCommodity | 400 | 310 |
| Large user 2 | Shopping device | Off-peak time standard electric power commodity | 600 | 300 |
| Large user 2 | Shopping device | Peak time period standard electric power commodity | 600 | 330 |
| Large user 2 | Shopping device | Standard electric power commodity in normal time period | 600 | 320 |
Queuing and matching to give out according to the priority order of the buyer with higher price and the seller with lower price, and if the price is the same, giving out according to the equal proportion of the declared capacity, adopting a marginal price giving out mode. In order to avoid the trivial contract made by the buyer and the seller, the provincial company is allowed to respectively make contracts made by the buyer and the seller. The results of the deal were as follows:
TABLE 5 winning bid results table for market Member
It can be seen that the peak period of user 1 is not successful due to the low declared price. The power curve of winning bid is formed by connecting winning bid power of each power generation enterprise and users in each time period.
And finally, according to the bid winning result, the electric power trading center respectively achieves the trading with the power generation enterprises and the power users in time intervals.
Example 3:
based on the same inventive concept, the invention also provides a system for connecting the medium-and-long-term electric power market with the spot market, and the principles of solving the technical problems by the devices are similar to the method for connecting the medium-and-long-term electric power market with the spot market, so repeated parts are not repeated.
The basic structure of the system is shown in fig. 2, and comprises: power information processing module and power curve module
The electric power information processing module is used for processing the transaction electric power information declared by each electric power market member according to time periods to form winning bid electric power information of buyers and sellers in the market members of each time period;
the power curve module is used for connecting winning bid power information of each time period every day in a transaction period to obtain a spot market oriented power curve;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation unit that is formulated based on the transaction period and the standard power information.
The detailed structure of the connection system between the medium-and long-term power market and the spot market is shown in fig. 3.
The system further comprises: a power cell module for formulating power cells, the power cell module comprising: the time interval division unit, the time interval formulation unit and the standard power unit;
the time interval division unit is used for analyzing and determining a peak time interval, a flat time interval and a valley time interval according to the historical data of the load flow of the power grid;
the time interval making unit is used for taking the peak time interval, the ordinary time interval and the valley time interval as the transaction time interval of the standard electric power commodity;
and the standard power unit is used for determining standard power according to the transaction requirement.
Wherein, the time interval division unit includes: a time interval counting subunit and a time interval dividing subunit;
the time interval counting subunit is used for counting historical data according to the load flow of the power grid to obtain the average power consumption of each hour in each day;
and the time interval dividing subunit is used for sequencing the power consumption of the time interval in 24 hours a day according to the unit time, and sequentially obtaining the time corresponding to the peak time interval, the time corresponding to the ordinary time interval and the time corresponding to the valley time interval from large to small.
The electric power information processing module comprises a matching unit and a standard result unit;
the matching unit is used for matching the price declared by the buyer and the seller in the power market members and the transaction power according to the transaction power information at each time interval in the transaction period;
and the winning result unit is used for forming winning power and winning price of electricity in the market of the market members in each time period according to the matching result.
The system also includes an electricity price curve module;
and the electricity price curve module is used for connecting the winning bid electricity price of the power market member in each day and each time period in the trading cycle to obtain a winning bid electricity price curve of the power market member in the trading cycle.
The system also includes a transaction module for purchasing electricity from sellers in the electricity market members in a time-division manner according to the electricity curve and selling the purchased electricity to buyers in the electricity market members.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present application and not for limiting the scope of protection thereof, and although the present application is described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that after reading the present application, they can make various changes, modifications or equivalents to the specific embodiments of the application, but these changes, modifications or equivalents are all within the scope of protection of the claims to be filed.
Claims (10)
1. A method for connecting a medium-long term power market with a spot market is characterized by comprising the following steps:
processing the transaction power information declared by each power market member according to time periods to form winning bid power information of buyers and sellers in the market members of each time period;
connecting winning bid power information of each time period every day in a transaction period to obtain a power curve facing the spot market;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation module configured based on the transaction period and standard power information.
2. The method of claim 1, wherein the power unit formulation comprises:
analyzing and determining peak time period, flat time period and valley time period according to the historical data of the load flow of the power grid;
taking the peak time period, the flat time period and the valley time period as transaction time periods of standard electric power commodities;
the standard power is determined according to transaction requirements.
3. The method of claim 2, wherein analyzing the grid load flow historical data to determine peak, flat, and valley periods comprises:
counting historical data according to the load flow of the power grid to obtain the average power consumption of each hour in each day;
and sequencing the power consumption of 24 hours a day according to unit time, and sequentially obtaining the time corresponding to the peak time period, the time corresponding to the ordinary time period and the time corresponding to the valley time period from large to small.
4. The method of claim 1, wherein the transaction power information declared for each electricity market member is processed by time period to form winning bid power information for buyers and sellers in the market member for each time period, comprising:
matching the price declared by the buyer and the seller in the power market members and the transaction power according to the transaction power information at each time period in the transaction period;
and forming the winning bid power and the winning bid price of the market member in each time period according to the matching result.
5. The method of claim 4, wherein after obtaining the power curve for engaging the spot market, further comprising:
and connecting the winning bid price of the power market member in each day and each time period in the trading cycle to obtain a winning bid price curve of the power market member in the trading cycle.
6. The method of claim 1, wherein after obtaining the spot market oriented power curve, further comprising:
and according to the power curve, purchasing power to the sellers in the power market members in a time-sharing manner, and selling the purchased power to the buyers in the power market members.
7. A system for linking a medium-long term power market with a spot market, comprising: the power information processing module and the power curve module;
the electric power information processing module is used for processing the transaction electric power information declared by each electric power market member according to time periods to form winning bid electric power information of buyers and sellers in the market members of each time period;
the power curve module is used for connecting winning bid power information of each time period every day in a transaction period to obtain a spot market oriented power curve;
the transaction electric power information is reported in different periods based on the electric power unit; the power unit includes a power generation module configured based on the transaction period and standard power information.
8. The system of claim 7, further comprising a power unit module for formulating power units, the power unit module comprising: the time interval division unit, the time interval formulation unit and the standard power unit;
the time interval division unit is used for analyzing and determining a peak time interval, a flat time interval and a valley time interval according to the historical data of the load flow of the power grid;
the time interval making unit is used for taking the peak time interval, the flat time interval and the valley time interval as transaction time intervals of standard electric power commodities;
and the standard power unit is used for determining standard power according to transaction requirements.
9. The system of claim 8, wherein the period dividing unit comprises: a time interval counting subunit and a time interval dividing subunit;
the time interval counting subunit is used for counting historical data according to the load flow of the power grid to obtain the average power consumption of each hour in each day;
and the time interval dividing subunit is used for sequencing the power consumption of the time interval in 24 hours a day according to the unit time, and sequentially obtaining the time corresponding to the peak time interval, the time corresponding to the ordinary time interval and the time corresponding to the valley time interval from large to small.
10. The system of claim 7, wherein the power information processing module includes a matching unit and a normalizing result unit;
the matching unit is used for matching the price declared by the buyer and the seller in the power market members and the transaction power according to the transaction power information at each time interval in the transaction period;
and the winning result unit is used for forming winning power and winning price per time interval according to the matching result.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111340624A (en) * | 2020-02-21 | 2020-06-26 | 山东电力交易中心有限公司 | Medium-and-long-term electric power transaction system and transaction method |
| CN111754299A (en) * | 2020-06-05 | 2020-10-09 | 华北电力大学 | Competitive bidding transaction system and method for multi-element main body flexible energy blocks in power market |
-
2019
- 2019-07-09 CN CN201910612902.3A patent/CN110689449A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111340624A (en) * | 2020-02-21 | 2020-06-26 | 山东电力交易中心有限公司 | Medium-and-long-term electric power transaction system and transaction method |
| CN111754299A (en) * | 2020-06-05 | 2020-10-09 | 华北电力大学 | Competitive bidding transaction system and method for multi-element main body flexible energy blocks in power market |
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