CN108198006B - Centralized bidding clearing method and system for electric energy market transaction - Google Patents
Centralized bidding clearing method and system for electric energy market transaction Download PDFInfo
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Abstract
The invention provides a centralized bidding clearing method and system for electric energy market transaction, comprising the following steps: acquiring all interval quotation information participating in bidding; dividing the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides; based on the two types of interval quotation information, clearing is carried out according to a preset clearing rule. The technical scheme provided by the invention fully reflects the willingness of each party participating in the electric power market transaction, is beneficial to more accurately finding out the real cost of the electric power market selling side, and promotes the healthier development of the electric power market.
Description
Technical Field
The invention relates to the field of electric power transaction, in particular to a centralized bidding clearing method and system for electric energy market transaction.
Background
In the electric energy transaction of the electric power market, the centralized bidding is a transaction organization mode which is frequently adopted at home and abroad. Under the condition that safety constraint and transmission line blockage are not considered, the unconstrained clearing of electric energy transaction in the electric power market usually adopts 2 modes of unified marginal clearing and matching clearing. And the marginal price is formed by unifying marginal clearing, and all power generation parties and power selling parties who make a transaction after unconstrained clearing adopt the unified marginal price. And (3) matching and clearing, namely, aiming at quotations of the power generation party and the electricity selling party, adopting a mode of sequentially matching the power generation party and the electricity selling party, and clearing and delivering pair by pair. Both of these approaches are currently well-established.
However, analyzing the above two unconstrained ways of bidding in a centralized manner, the following disadvantages still exist:
1) The willingness of the market exchange participant to bid is resilient. Not only 1 fixed price limit in a market transaction. From the viewpoint of market psychology, the market trading subject's price quote should be a quote interval, i.e. the market trading subject has a most desirable price for a deal, but in case of difficult to reach, the price for a deal also has some float. For example, a power plant (seller) offers 0.4 yuan/kwh, which most desirably is traded at the price, which can be suitably lower in case of difficult achievement, but not lower than 0.37 yuan/kwh at the minimum, and a single price offer is difficult to fully represent the market trading subject will. A similar situation is apparent also in the power purchasing side.
2) In the electric power market trade, the price declared by each trade party is usually required to be a cost price in theory, but the actual marginal cost is in a certain error range, on one hand, the accurate measurement is difficult, on the other hand, the variable factors are numerous and the moment is changing, so the cost price reflected by the quotation of the market trade main body is also an interval.
3) There should be a fault tolerance range for the centralized bidding. This is due to the difficulty in accurate estimation of costs and the price bias of the market exchange itself.
The above problems prevent the full competition of the electric power market, influence the total amount of the electric power market, and also cause the difficulty in fully achieving the willingness of the market trade participators.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a centralized bidding clearing method and system for electric energy market transaction.
The technical scheme provided by the invention is as follows: a method of centralized bid clearing for electric energy market transactions, comprising:
acquiring all interval quotation information participating in bidding;
dividing the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
based on the two types of interval quotation information, clearing is carried out according to a preset clearing rule.
Preferably, the bidding main body divides the interval quotation information into two categories, the first category is an electricity purchasing side, the second category is an electricity selling side, and the bidding main body comprises:
for any one of the bidding subjects,
when the bidding main body is determined to be the electricity purchasing side according to the registration information of any bidding main body, if a first bidding ordered list is empty, the interval bidding information of any bidding main body is added into the first bidding ordered list, and if the first bidding ordered list is not empty, the interval bidding information of any bidding main body is inserted into the first bidding ordered list;
when the bidding main body is determined to be an electricity selling side according to the registration information of any bidding main body, if the second bidding main body is empty, the interval quotation information of any bidding main body is added into the second bidding main body, and if the second bidding main body is not empty, the interval quotation information of any bidding main body is inserted into the second bidding main body.
Preferably, the interval quotation information includes: lower limit, upper limit and declared power.
Preferably, the inserting the interval bid information of the any bidding subject into the first bid ranking table includes:
sequentially reading each piece of interval quotation information in the first quotation sequencing table;
if the read section quotation information meets the first judgment or the second judgment, inserting the section quotation information of any bidding subject in front of the read section quotation information;
otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of interval quotation of any bidding subject is greater than the upper limit of the read quotation;
the second determination is that the upper limit of the interval bid of any bidding subject is equal to the upper limit of the read bid, and the lower limit of the interval bid of any bidding subject is greater than the lower limit of the read bid.
Preferably, the inserting the interval bid information of the any bidding subject into the second bid ranking table includes:
sequentially reading each piece of interval quotation information in the second quotation sequencing table;
if the read section quotation information meets the third judgment or the fourth judgment, inserting the section quotation information of any bidding subject in front of the read section quotation information;
otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the interval quotation lower limit of any bidding subject is smaller than the read quotation lower limit;
the fourth determination is: the interval lower limit of the bid body is equal to the read lower limit of the bid, and the upper limit of the bid body is smaller than the read upper limit of the bid.
Preferably, the clearing is performed according to a preset clearing rule based on the two types of interval quotation information, including:
s1: clearing a preset transaction result table;
s2: when one of the first quotation sorting table or the second quotation sorting table is empty, executing the step S8, otherwise executing the step S3;
s3: the upper limit of the electricity purchasing price, the lower limit of the electricity purchasing price and the first reporting electric quantity are determined according to the first record of the first price sorting table; the upper limit of the electricity selling price, the lower limit of the electricity selling price and the second reporting electric quantity are determined according to the first record of the second price sorting table;
s4: if the upper limit of the electricity purchase quotation is smaller than the lower limit of the electricity selling quotation, executing the step S8, otherwise executing the step S5;
s5: if the lower limit of the electricity purchase price is not less than the upper limit of the electricity selling price, taking the midpoint between the lower limit of the electricity purchase price and the upper limit of the electricity selling price as the trading price;
s6: when the first reporting electric quantity is smaller than the second reporting electric quantity, taking the first reporting electric quantity as the success rate, and adding the success rate into a success rate result table; when the electricity purchase report price is the last record in the first quotation sorting table, executing the step S8, otherwise, reading the next record of the first quotation sorting table to determine the upper limit of electricity purchase, the lower limit of electricity purchase and the first reporting electric quantity, and modifying the second reporting electric quantity at the electricity selling side into the remaining capacity of the transaction;
when the first reporting electric quantity is equal to the second reporting electric quantity, the first reporting electric quantity is used as the success rate, and the success rate is added into a success rate result table; when the electricity purchasing price is the last electricity selling price in the first price quotation sorting table and the last electricity selling price quotation in the second price quotation sorting table, executing the step S8, otherwise, reading the next record of the first price quotation sorting table to determine the upper electricity purchasing limit, the lower electricity purchasing limit and the first reporting electric quantity and the next record of the second price quotation sorting table to determine the upper electricity selling price quotation limit, the lower electricity selling price quotation limit and the second reporting electric quantity;
when the first reporting electric quantity is larger than the second reporting electric quantity, the second reporting electric quantity is taken as a transaction amount, a transaction result table is added, the first reporting electric quantity is modified into a transaction residual electric quantity, when the electricity selling price is the last in the second price sorting table, the step S8 is executed, otherwise, the next record of the second price sorting table is read to determine the upper limit of the electricity selling price, the lower limit of the electricity selling price and the second reporting electric quantity;
s7: inserting the electricity purchasing side, the electricity selling side, the trading volume and the trading price into the last row of the trading result table, and then continuously executing the step S4;
s8: clearing is carried out according to a transaction result table.
Preferably, the step S8: before clearing according to the transaction result table, the method comprises the following steps:
when the unified marginal clearing rule is adopted, the trading price in the trading result table is changed into the trading price of the last trading record, and then clearing is carried out according to the modified trading result table.
A centralized bid clearing system for electric energy market transactions, comprising:
the information acquisition module is used for acquiring all interval quotation information participating in bidding;
the classification module is used for classifying the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
the clearing module is used for clearing according to preset clearing rules based on the two types of interval quotation information.
Preferably, the classification module includes:
the electronic purchasing side submodule is used for adding the interval quotation information of any bidding subject into the first quotation sorting table when the bidding subject is the electronic purchasing side;
and the electronic selling side sub-module is used for adding the interval quotation information of any bidding subject into the second quotation sorting table when the bidding subject is the electronic selling side.
Preferably, the electronic purchase side submodule includes:
the first judgment adding unit is used for judging whether the first quotation sorting table is empty, and if the first quotation sorting table is empty, adding the interval quotation information of any bidding subject into the first quotation sorting table;
the first inserting unit is used for reading the quotation information of each interval in the first quotation sorting table in sequence when the first quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the first judgment or the second judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of the bid of any bidding subject is greater than the upper limit of the bid read;
the second determination is: the upper bid limit of any bidding subject is equal to the read upper bid limit while the lower bid limit of any bidding subject is greater than the read lower bid limit.
Preferably, the electronic sales side submodule includes:
the second judging and adding unit is used for judging whether the second quotation sorting table is empty, and if the second quotation sorting table is empty, adding the interval quotation information of any bidding subject into the second quotation sorting table;
the second inserting unit is used for reading the quotation information of each interval in the second quotation sorting table in sequence if the second quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the third judgment or the fourth judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the lower limit of the bid of any bidding subject is less than the lower limit of the bid read;
the fourth determination is: the lower bid limit of any bidding subject is equal to the lower bid limit read, while the upper bid limit of any bidding subject is less than the upper bid limit read.
Preferably, the clearing module includes:
the trading price sub-module is used for determining a trading price according to the upper limit of the electricity purchasing price determined by the record of the first price ranking table, the lower limit of the electricity purchasing price, the upper limit of the electricity selling price determined by the record of the second price ranking table and the lower limit of the electricity selling price;
and the transaction sub-module is used for determining the transaction amount according to the first reporting electric quantity determined by the record of the first quotation sorting table and the second reporting electric quantity determined by the record of the second quotation sorting table.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the technical scheme provided by the invention, the interval quotation information of the electricity selling side and the interval quotation information of the electricity purchasing side are cleared according to the preset clearing rules, so that a means and a mode for enabling a market transaction main body to more accurately express the willingness of the market transaction main body to participate in the electric market transaction are endowed, the enthusiasm of the market transaction main body to participate in the market is improved, and a support is provided for the market transaction main body to better participate in the electric market transaction.
2. The invention fully reflects the cost uncertainty of the main bodies of all parties participating in the electric power market transaction, is beneficial to more accurately finding out the real cost of the electric power market, particularly the real cost of the electricity selling side, and promotes the healthier development of the electric power market.
3. The invention provides a stronger fault tolerance mechanism for the trading behavior of the electric power market trading body and the determination of the marginal cost of the electric power market, and is beneficial to establishing a more mature and stable electric power market.
4. The invention provides more sufficient market competition through supporting the bidirectional interval quotation of the electric power market trading participation main body, and provides possibility for larger market trading volume and lower market trading price.
Drawings
FIG. 1 is a flow chart of a centralized bid clearing method for an electric energy market transaction of the present invention;
FIG. 2 is a schematic diagram of the overall architecture of the centralized bidding system of the present invention for electric energy market trading;
FIG. 3 is a flow chart of a centralized bid clearing process for an electric energy market transaction of the present invention;
FIG. 4 is a flowchart of the sorting of section quotation information on the electricity selling side and section quotation information on the electricity purchasing side according to the invention;
fig. 5 is a flow chart of the present invention for clearing according to the matchmaking rules.
Detailed Description
For a better understanding of the present invention, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a centralized bidding clearing method for electric energy market transaction, which is as shown in fig. 1:
acquiring all interval quotation information participating in bidding;
dividing the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
based on the two types of interval quotation information, clearing is carried out according to a preset clearing rule.
Example 1
Fig. 4 is a flowchart showing the sorting of the interval quotation information on the electricity selling side and the interval quotation information on the electricity purchasing side according to the present invention;
I. starting an interval quotation sequencing flow of a market trading main body, and acquiring interval quotation information X (a, b and c) of the market trading main body, wherein a represents a lower quotation limit, b represents an upper quotation limit and c represents a declaration electric quantity; checking validity of interval quotation information of a market trading body:
whether the specific quotation and declaration electric quantity meet the specifications of the local electric market or not; if the price is invalid, returning to the process of starting to acquire the interval price information of the new market trading body again; if the market trading main body is the electricity selling side market main body, judging whether the market trading main body is the effective quotation, if not, entering the step II, otherwise, entering the step IV;
II. If the second quotation sorting table is empty, directly adding the current quotation information into the second quotation sorting table, otherwise, enabling the pointer P to point to the 1 st quotation of the second quotation sorting table;
III, fetching the bid pointed by the pointer P to Y (a, b, c), if X.a < Y.a, X inserts the current bid pointed by P before entering step VI, otherwise if (X.a = Y.a) and (X.b < Y.b), X inserts the current bid pointed by P before entering step VI, otherwise, if Y is the last bid of the second bid ranking table, X inserts the current bid pointed by P after entering step VI, otherwise, P inserts the next bid pointed by Y in the second bid ranking table, and repeating the operations of the steps;
IV, if the first quotation sequencing table is empty, directly adding the interval quotation information of the market trading main body into the first quotation sequencing table, otherwise, enabling the pointer P to point to the 1 st quotation of the first quotation sequencing table;
v, fetching the bid pointed by pointer P to Y (a, b, c), if X.b > Y.b, X inserts the current bid pointed by P before entering step VI, otherwise if (X.b = Y.b) and (X.a > Y.a), X inserts the current bid pointed by P before entering step VI, otherwise if Y is the last bid of the first bid ranking table, X inserts the current bid pointed by P after entering step VI, otherwise P points to the next bid of Y in the first bid ranking table, and repeating the operations of step;
VI, if the interval quotation information of the new market trading main body exists, entering a step I, otherwise ending the sorting process.
As shown in fig. 5, which is a flowchart of an unconstrained process algorithm for electric energy centralized transaction based on bidirectional interval quotation, the method comprises the following steps:
I. starting a specific clearing process, clearing the transaction result table, and reading market clearing rule configuration data;
II. If the first or second bid ordered list is empty, executing step IX, otherwise executing step III;
III, reading a first record in a first quotation sorting table to X (a, b, c), wherein a is the lower limit of interval quotation at the electricity purchasing side, b is the upper limit, and c is the declaration electric quantity;
IV, reading a second quotation sequencing list head record to Y (a, b, c), wherein a is the lower limit of interval quotation at the electricity selling side, b is the upper limit, and c is the declaration electric quantity;
v, if X.b < Y.a, go to step IX, otherwise if X.a > Y.b, take the midpoint of X.a and Y.b as the trading price, otherwise take the midpoint of the intersection of [ X.a, X.b ] and [ Y.a, Y.b ] as the trading price;
VI, if X.c < Y.c, adding a deal result with X.c as the deal, Y.c = Y.c-X.c, if X is already the last in the purchase price ordering queue, executing step IX, otherwise, reading the next record in the first quotation ordering table to X (a, b, c), and executing step V;
VII, if X.c = Y.c, taking X.c as a transaction amount, adding a transaction result, if X is the last in the first quotation sorting table or Y is the last in the second quotation sorting table, executing step IX, otherwise, reading the next record in the first quotation sorting table to X (a, b, c), reading the next record in the second quotation sorting table X (a, b, c), and executing step V;
VIII, taking Y.c as the volume of the transaction, adding the result of the transaction, X.c = X.c-Y.c, if Y is the last in the second quotation sorting table, executing step IX, otherwise, reading the next record in the second quotation sorting table to Y (a, b, c), and executing step V;
IX, arranging the transaction records according to the sequence of adding the transaction result list, wherein each transaction record comprises an electricity selling side, an electricity purchasing side, a transaction price and a transaction amount, and if the configuration rule is that the unified margin is clear, changing the transaction price of all the transaction records into the transaction price of the last added record; the clearing process is finished.
Example 2:
in order to better illustrate the feasibility of the patent in real life, a specific demonstration mode is provided below
Firstly, taking a process of electric energy centralized transaction of electric power markets of 5 electronic commerce quotations and 5 electronic commerce quotations at a time as an example.
1) Real-time case of interval quotation and clearing
Assuming that there are 5 electronic seller quotations and 5 electronic purchaser quotations in a centralized electric energy transaction of an electric power market, quotation information is shown in table 1 according to the quotation sequence.
Table 1 one-time centralized transaction quotation information
After all the market subject quotations are obtained, the market subject quotation information of the electricity selling side and the electricity purchasing side is respectively ordered according to the algorithm flow of fig. 3, and a ranking table shown in table 2 is obtained.
Table 2 one-time centralized transaction bid ordering information
After ordering all the electricity selling and purchasing party market main body quotation information, the trading information is obtained according to the clear trading rules, and the trading information is shown in table 3.
TABLE 3 transaction information for one centralized transaction and matching
The total transaction is 2800 megawatts, the transaction price of the last pair of matched transactions is 410 yuan/megawatt, and the average transaction price of all transaction transactions is 415.357 yuan/megawatt.
2) Single desired mean price quote
In contrast, in the implementation process of electric energy centralized transaction of the electric power market, wherein 5 electricity sellers offer and 5 electricity buyers offer a single middle offer at a time, if the centralized transaction implementation example adopts a single offer, if each offer of an electricity buyer and an electricity seller takes the midpoint of the original interval offer, the offer information is shown in table 4.
Table 4 centralized transaction quotation information using a single intermediate quotation at a time
After all market main body quotations are obtained, the quotation information of the electricity selling side and the electricity purchasing side are respectively ranked according to a typical ranking algorithm (the electricity selling side ranks from low to high according to the lower limit of the price, the electricity purchasing side ranks from high to low according to the upper limit of the price, and the price is the same, and the ranking is determined according to the related environmental protection and energy saving index values) of the actual electric energy market at present, so that a ranking table shown in table 5 is obtained.
Table 5 centralized transaction bid ordering information with single intermediate bid at a time
After ordering all the quotation information of the trading subjects of the electricity selling and purchasing parties, the trading information is obtained according to the matching clearing algorithm (high-low matching, first come, and middle price trading) of the current actual market, and the trading information is shown in table 6.
TABLE 6 centralized transaction with single intermediate offers at a time, match up clear deal information
The total trading price is 1600 megawatts, the trading price of the last pair of matched trades is 422.5 yuan/megawatt hour, and the average trading price of all trade trades is 420 yuan/megawatt hour.
If the unified marginal clearing rule is adopted, all the price exchanges are changed into 422.5 yuan/megawatt hour of the price exchanges of the last pair of matched transactions for clearing.
As can be seen from the above embodiments, the required effect can be achieved by using the interval quotation and clearing scheme.
Example 3:
in addition, the invention also provides a centralized bidding system for electric energy market transaction, as shown in fig. 2, the centralized bidding system for electric energy market transaction has a general architecture diagram:
a centralized bid clearing system for electric energy market transactions, comprising:
the information acquisition module is used for acquiring all interval quotation information participating in bidding;
the classification module is used for classifying the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
the clearing module is used for clearing according to preset clearing rules based on the two types of interval quotation information.
A classification module, comprising:
the electronic purchasing side submodule is used for adding the interval quotation information of any bidding subject into the first quotation sorting table when the bidding subject is the electronic purchasing side;
and the electronic selling side sub-module is used for adding the interval quotation information of any bidding subject into the second quotation sorting table when the bidding subject is the electronic selling side.
The purchase side submodule comprises:
the first judgment adding unit is used for judging whether the first quotation sorting table is empty, and if the first quotation sorting table is empty, adding the interval quotation information of any bidding subject into the first quotation sorting table;
the first inserting unit is used for reading the quotation information of each interval in the first quotation sorting table in sequence when the first quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the first judgment or the second judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of the bid of any bidding subject is greater than the upper limit of the bid read;
the second determination is: the upper bid limit of any bidding subject is equal to the read upper bid limit while the lower bid limit of any bidding subject is greater than the read lower bid limit.
The electronic sales side submodule includes:
the second judging and adding unit is used for judging whether the second quotation sorting table is empty, and if the second quotation sorting table is empty, adding the interval quotation information of any bidding subject into the second quotation sorting table;
the second inserting unit is used for reading the quotation information of each interval in the second quotation sorting table in sequence if the second quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the third judgment or the fourth judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the lower limit of the bid of any bidding subject is less than the lower limit of the bid read;
the fourth determination is: the lower bid limit of any bidding subject is equal to the lower bid limit read, while the upper bid limit of any bidding subject is less than the upper bid limit read.
The clearing module comprises:
the trading price sub-module is used for determining a trading price according to the upper limit of the electricity purchasing price determined by the record of the first price ranking table, the lower limit of the electricity purchasing price, the upper limit of the electricity selling price determined by the record of the second price ranking table and the lower limit of the electricity selling price;
and the transaction sub-module is used for determining the transaction amount according to the first reporting electric quantity determined by the record of the first quotation sorting table and the second reporting electric quantity determined by the record of the second quotation sorting table.
FIG. 3 is a flow chart of a centralized bid clearing process for an electric energy market transaction according to the present invention;
I. the information acquisition module is used for acquiring all interval quotation information participating in bidding;
firstly, starting electric energy centralized transaction unconstrained clearing supporting bidirectional interval quotation, receiving the interval quotation of a market trading subject by a market subject interval quotation processing module, sending quotation information of an electricity purchasing side to an electricity purchasing side sub-module according to the type of the market subject, and sending quotation information of an electricity selling side to an electricity selling side sub-module until all the market trading subject quotations are completed; the form of the market trading subject offer may vary, but the basic elements include (lower offer limit, upper offer limit, declared electricity). Such as a price quote (0.4,0.46,1000000) on the electricity purchasing side, representing a purchase of 1000000 kilowatt-hours, preferably at 0.4 yuan/kilowatt-hour, if difficult to reach, the purchase price may be increased, but not higher than 0.46 yuan/kilowatt-hour at maximum. Also, for example, a price quote (0.42,0.52,1000000) on the electricity selling side, representing a sales capacity of 1000000 kW hours, preferably at 0.52 Yuan/kW hours, if difficult to reach, the sales price may be reduced, but at a minimum not less than 0.42 Yuan/kW hours; the above quotation forms can be various forms, for example, in the current electric energy centralized transaction, the transmission and distribution price, government funds, additions and the like are also considered, and meanwhile, reference internet electricity price regulations are possibly provided for an electricity selling side (a power plant), and directory electricity price regulations are possibly provided for an electricity purchasing side (an electric power user or an electricity selling company), so that the quotation is actually performed in the electric energy centralized transaction, and a price difference mode (the electricity selling side is the price difference for the internet electricity price, the floating is positive, the floating is negative, the electricity purchasing side is the price difference for the directory electricity price, the floating is positive, the floating is negative), and the quotation is actually performed for tens of thousands of times of electricity per unit of electricity purchase. The invention does not consider the electricity transmission and distribution price, government foundation, addition and the like;
II. The classification module is used for classifying the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides
The electronic purchasing side submodule is used for adding the interval quotation information of any bidding subject into the first quotation sorting table when the bidding subject is the electronic purchasing side; the first quotation sorting table sorts the market main body of the electricity purchasing side from high to low according to the upper price limit of interval quotation information of the market main body of the electricity purchasing side;
the first judgment adding unit is used for judging whether the first quotation sorting table is empty, and if the first quotation sorting table is empty, adding the interval quotation information of any bidding subject into the first quotation sorting table;
the first inserting unit is used for reading the quotation information of each interval in the first quotation sorting table in sequence when the first quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the first judgment or the second judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of the bid of any bidding subject is greater than the upper limit of the bid read;
the second determination is: the upper bid limit of any bidding subject is equal to the read upper bid limit while the lower bid limit of any bidding subject is greater than the read lower bid limit.
The electronic selling side submodule is used for adding the interval quotation information of any bidding subject into the second quotation sorting table when the bidding subject is the electronic selling side; the second quotation sorting table sorts the main body of the electricity selling side market from low to high according to the lower limit of the price of the interval quotation information of the main body of the electricity selling side market;
the second judging and adding unit is used for judging whether the second quotation sorting table is empty, and if the second quotation sorting table is empty, adding the interval quotation information of any bidding subject into the second quotation sorting table;
the second inserting unit is used for reading the quotation information of each interval in the second quotation sorting table in sequence if the second quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the third judgment or the fourth judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the lower limit of the bid of any bidding subject is less than the lower limit of the bid read;
the fourth determination is: the lower bid limit of any bidding subject is equal to the lower bid limit read, while the upper bid limit of any bidding subject is less than the upper bid limit read.
III, a clearing module, which is used for clearing according to a preset clearing rule based on two types of interval quotation information:
receiving possible additional rule setting of the clearing rule of the electric energy centralized transaction by the market management mechanism; for example, whether to intensively match up the clearing (the buyers and sellers make deals respectively, and the price of the deals can be different from each other) or to unify the marginal clearing (the price of the deals of all the parties is unifying the marginal price);
the trading price sub-module is used for determining a trading price according to the upper limit of the electricity purchasing price determined by the record of the first price ranking table, the lower limit of the electricity purchasing price, the upper limit of the electricity selling price determined by the record of the second price ranking table and the lower limit of the electricity selling price;
and the transaction sub-module is used for determining the transaction amount according to the first reporting electric quantity determined by the record of the first quotation sorting table and the second reporting electric quantity determined by the record of the second quotation sorting table.
Acquiring clearing rule setting information from a market clearing rule configuration module, acquiring quotation information of ordered market subjects of the electricity selling side from an ordering sub-module of the market subjects of the electricity selling side, acquiring quotation information of ordered market subjects of the electricity purchasing side from an ordering sub-module of the main subjects of the electricity purchasing side, and carrying out market clearing on the centralized transaction;
checking the clear result as necessary; the specific checking mode has various forms according to market demands, such as related policies and power market regulations, power system safety checking, power transmission line blocking and the like. If the clearing result is found to be unsuitable (for example, the safety check is not passed) after the processing is finished, notifying the interval quotation market clearing processing module of the correlation deficiency, and restarting the clearing process, otherwise, ending the clearing.
In addition, those skilled in the art will appreciate that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as providing for the use of additional embodiments and advantages of all such modifications, equivalents, improvements and similar to the present invention are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (3)
1. A method of centralized bidding clearing for an electric energy market transaction, comprising:
acquiring all interval quotation information participating in bidding;
dividing the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
clearing according to a preset clearing rule based on the two types of interval quotation information;
the bidding main body divides the interval quotation information into two categories, wherein the first category is an electricity purchasing side, the second category is an electricity selling side, and the bidding main body comprises:
for any one of the bidding subjects,
when the bidding main body is determined to be the electricity purchasing side according to the registration information of any bidding main body, if a first bidding ordered list is empty, the interval bidding information of any bidding main body is added into the first bidding ordered list, and if the first bidding ordered list is not empty, the interval bidding information of any bidding main body is inserted into the first bidding ordered list;
when the bidding main body is determined to be an electricity selling side according to the registration information of any bidding main body, if a second bidding ordered list is empty, the interval bidding information of any bidding main body is added into the second bidding ordered list, and if the second bidding ordered list is not empty, the interval bidding information of any bidding main body is inserted into the second bidding ordered list;
the interval quotation information comprises: lower limit of quotation, upper limit of quotation and reporting electric quantity;
the inserting the interval bid information of the bidding subject into the first bid ranking table includes:
sequentially reading each piece of interval quotation information in the first quotation sequencing table;
if the read section quotation information meets the first judgment or the second judgment, inserting the section quotation information of any bidding subject in front of the read section quotation information;
otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of interval quotation of any bidding subject is greater than the upper limit of the read quotation;
the second judgment is that the upper limit of the interval quotation of any bidding subject is equal to the upper limit of the read quotation, and meanwhile, the lower limit of the interval quotation of any bidding subject is greater than the lower limit of the read quotation;
the inserting the interval bid information of the bidding subject into the second bid ranking table includes:
sequentially reading each piece of interval quotation information in the second quotation sequencing table;
if the read section quotation information meets the third judgment or the fourth judgment, inserting the section quotation information of any bidding subject in front of the read section quotation information;
otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the interval quotation lower limit of any bidding subject is smaller than the read quotation lower limit;
the fourth determination is: the interval quotation lower limit of any bidding subject is equal to the read quotation lower limit, and meanwhile, the quotation upper limit of any bidding subject is smaller than the read quotation upper limit;
the clearing is performed according to a preset clearing rule based on the two types of interval quotation information, and the method comprises the following steps:
s1: clearing a preset transaction result table;
s2: when one of the first quotation sorting table or the second quotation sorting table is empty, executing the step S8, otherwise executing the step S3;
s3: the upper limit of the electricity purchasing price, the lower limit of the electricity purchasing price and the first reporting electric quantity are determined according to the first record of the first price sorting table; the upper limit of the electricity selling price, the lower limit of the electricity selling price and the second reporting electric quantity are determined according to the first record of the second price sorting table;
s4: if the upper limit of the electricity purchase quotation is smaller than the lower limit of the electricity selling quotation, executing the step S8, otherwise executing the step S5;
s5: if the lower limit of the electricity purchase price is not less than the upper limit of the electricity selling price, taking the midpoint between the lower limit of the electricity purchase price and the upper limit of the electricity selling price as the trading price;
s6: when the first reporting electric quantity is smaller than the second reporting electric quantity, taking the first reporting electric quantity as the success rate, and adding the success rate into a success rate result table; when the electricity purchase report price is the last record in the first quotation sorting table, executing the step S8, otherwise, reading the next record of the first quotation sorting table to determine the upper limit of electricity purchase, the lower limit of electricity purchase and the first reporting electric quantity, and modifying the second reporting electric quantity at the electricity selling side into the remaining capacity of the transaction;
when the first reporting electric quantity is equal to the second reporting electric quantity, the first reporting electric quantity is used as the success rate, and the success rate is added into a success rate result table; when the electricity purchasing price is the last electricity selling price in the first price quotation sorting table and the last electricity selling price quotation in the second price quotation sorting table, executing the step S8, otherwise, reading the next record of the first price quotation sorting table to determine the upper electricity purchasing limit, the lower electricity purchasing limit and the first reporting electric quantity and the next record of the second price quotation sorting table to determine the upper electricity selling price quotation limit, the lower electricity selling price quotation limit and the second reporting electric quantity;
when the first reporting electric quantity is larger than the second reporting electric quantity, the second reporting electric quantity is taken as a transaction amount, a transaction result table is added, the first reporting electric quantity is modified into a transaction residual electric quantity, when the electricity selling price is the last in the second price sorting table, the step S8 is executed, otherwise, the next record of the second price sorting table is read to determine the upper limit of the electricity selling price, the lower limit of the electricity selling price and the second reporting electric quantity;
s7: inserting the electricity purchasing side, the electricity selling side, the trading volume and the trading price into the last row of the trading result table, and then continuously executing the step S4;
s8: clearing is carried out according to a transaction result table.
2. The method according to claim 1, wherein said step S8: before clearing according to the transaction result table, the method comprises the following steps:
when the unified marginal clearing rule is adopted, the trading price in the trading result table is changed into the trading price of the last trading record, and then clearing is carried out according to the modified trading result table.
3. A centralized bidding system for electric energy market trading, comprising:
the information acquisition module is used for acquiring all interval quotation information participating in bidding;
the classification module is used for classifying the interval quotation information into two types according to bidding main bodies, wherein the bidding main bodies of the first type are electricity purchasing sides, and the bidding main bodies of the second type are electricity selling sides;
the clearing module is used for clearing according to preset clearing rules based on the two types of interval quotation information;
the classification module comprises:
the electronic purchasing side submodule is used for adding the interval quotation information of any bidding subject into the first quotation sorting table when the bidding subject is the electronic purchasing side;
the electronic selling side submodule is used for adding the interval quotation information of any bidding subject into the second quotation sorting table when the bidding subject is the electronic selling side;
the purchasing side submodule comprises:
the first judgment adding unit is used for judging whether the first quotation sorting table is empty, and if the first quotation sorting table is empty, adding the interval quotation information of any bidding subject into the first quotation sorting table;
the first inserting unit is used for reading the quotation information of each interval in the first quotation sorting table in sequence when the first quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the first judgment or the second judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the first judgment and the second judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the first determination is: the upper limit of the bid of any bidding subject is greater than the upper limit of the bid read;
the second determination is: the upper limit of the bid of any bidding subject is equal to the upper limit of the read bid, and the lower limit of the bid of any bidding subject is larger than the lower limit of the read bid;
the electronic sales side submodule comprises:
the second judging and adding unit is used for judging whether the second quotation sorting table is empty, and if the second quotation sorting table is empty, adding the interval quotation information of any bidding subject into the second quotation sorting table;
the second inserting unit is used for reading the quotation information of each interval in the second quotation sorting table in sequence if the second quotation sorting table is not empty;
if the interval quotation information of any bidding subject meets the third judgment or the fourth judgment, inserting the interval quotation information of any bidding subject before the read interval quotation information; otherwise, reading the next interval quotation information;
if the last interval quotation information still does not meet the third judgment and the fourth judgment, inserting the interval quotation information of any bidding subject into the read interval quotation information;
wherein the third determination is: the lower limit of the bid of any bidding subject is less than the lower limit of the bid read; the fourth determination is: the lower limit of the bid of any bidding subject is equal to the lower limit of the read bid, and meanwhile, the upper limit of the bid of any bidding subject is smaller than the upper limit of the read bid;
the clearing module comprises:
the trading price sub-module is used for determining a trading price according to the upper limit of the electricity purchasing price determined by the record of the first price ranking table, the lower limit of the electricity purchasing price, the upper limit of the electricity selling price determined by the record of the second price ranking table and the lower limit of the electricity selling price;
and the transaction sub-module is used for determining the transaction amount according to the first reporting electric quantity determined by the record of the first quotation sorting table and the second reporting electric quantity determined by the record of the second quotation sorting table.
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| CN107563585A (en) * | 2017-07-13 | 2018-01-09 | 清华大学 | A kind of wind-powered electricity generation heat supply electricity dispatching method |
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