CN111027756A - New energy transaction curve decomposition method, system and server considering medium and long term contracts - Google Patents
New energy transaction curve decomposition method, system and server considering medium and long term contracts Download PDFInfo
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Abstract
The embodiment of the invention discloses a new energy transaction curve decomposition method considering medium and long term contracts, which comprises the following steps: calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trade contracts of each new energy power plant before the current market is opened; calculating the total power generation space, monthly residual power and monthly residual load rate of the new energy according to a set time interval based on the boundary conditions of the spot market; calculating the total residual distribution power generation space of all the new energy power plants at a certain moment according to monthly execution contract electric quantity of each new energy power plant and monthly residual electric quantity residual load rate of monthly residual electric quantity; and when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment, distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant. The embodiment of the invention can realize the connection and transition of medium and long term trade contracts and the electric power spot market.
Description
Technical Field
The invention relates to the field of electric power markets, in particular to a new energy transaction curve decomposition method, a system and a server considering medium and long term contracts.
Background
With the advance of the reformation of the electric power market, the marketization level is gradually improved, and the time sequence relation of the market in different time periods is straightened. According to a plurality of opinions (published [ 2015 ] 9) about further advanced power system reform issued by the common central national institute in 2015 and supporting files thereof, the fact that power market construction is the core content of a new round of power improvement is pointed out, in order to guarantee effective connection of spot-market and medium-and long-term transaction, actual conditions of various provinces need to be fully combined, requirements of all parties are coordinated, the current situation of medium-and long-term transaction development of power is fully respected, income is locked by the medium-and long-term transaction, and risks are avoided for a market main body; the spot market finds the price, satisfies the real-time balance of electric power, ensures the ordered connection of medium-long term transaction and spot transaction.
In order to meet the requirement of national power system reformation, the power supply structure of each province and the actual operation condition of a power grid need to be considered in the construction of the spot market. The wind and light resources in northwest regions of China are rich, and the problem of new energy consumption needs to be fully considered when the electric power spot market is built. The power decomposition is carried out on new energy power plants such as wind and light by combining medium and long-term transaction, and the effective connection with spot transaction is realized.
At present, the inventor has not found a method for decomposing a new energy transaction curve in order to realize effective connection of the electric power spot market and medium-long term transaction.
Disclosure of Invention
The invention provides a new energy transaction curve decomposition method, a system and a server considering medium and long term contracts, so as to realize the new energy transaction curve decomposition considering the medium and long term contracts and further realize the effective connection of the electric power spot market and the medium and long term transactions.
An embodiment of the present invention provides a new energy transaction curve decomposition method considering medium-and-long-term contracts, including:
calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trade contracts of each new energy power plant before the current market is opened;
based on the boundary conditions of the spot market, calculating the total power generation space of the new energy, the monthly residual electric quantity and the monthly electric quantity residual load rate of each new energy power plant according to a set time interval;
calculating the total residual distribution power generation space of all the new energy power plants at a certain moment according to monthly execution contract electric quantity, monthly residual electric quantity and monthly electric quantity residual load rate of each new energy power plant;
and when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment, distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant.
Further, after the surplus distribution power generation space is distributed according to the monthly electricity surplus proportion of each new energy power plant, the method further comprises the following steps:
and redistributing the residual distributed power generation space after the distribution according to the power abandoning rate proportion caused by the primary distribution plan of each new energy power plant at the moment.
Further, the monthly execution contract electric quantity of each new energy power plant is calculated according to all medium and long term trade contracts of each new energy power plant before the current market is opened, and the method specifically comprises the following steps:
reading medium and long term trading contracts of different types of new energy power plants in different types of years, wherein the medium and long term trading contracts comprise different component electric quantities and corresponding prices;
decomposing the annual electric quantity of each new energy power plant to a month, and reading the monthly direct transaction electric quantity and corresponding price of each new energy power plant;
calculating monthly execution contract electric quantity of each new energy power plant according to the following formula:
wherein the content of the first and second substances,
in order to resolve the base electricity quantity monthly,
for the monthly decomposition of the electricity generated by the power generation priority,
for monthly decomposition of direct transaction electricity,
the electricity is traded directly for monthly.
Further, the boundary conditions of the spot market comprise the next day power generation amount of the provincial units and the next day predicted output of each new energy power plant;
the next day power generation amount of the provincial unit is determined by the following formula:
Qgeneral assembly＝QIn province+QProvince room
Wherein Q isGeneral assemblyFor saving all power consumption of internal units，QIn provinceFor saving all electrical loads, QProvince roomPlans for inter-provincial links.
Further, the total power generation space of each new energy power plant is determined by the following formula:
Qnew energy resource＝min(QIn province+QProvince room，QPrediction)
Wherein Q isNew energy resourceFor new energy total power generation space, QPredictionAnd generating capacity is predicted for the new energy power plant in a short term.
Further, the total surplus distribution power generation space of all the new energy power plants at a certain moment is calculated according to monthly execution contract electric quantity, monthly surplus electric quantity and monthly surplus load rate of each new energy power plant, and the calculation method specifically comprises the following steps:
if it is
Then Q isi，t＝0；
Wherein the content of the first and second substances,
executing contract electric quantity, Q, for the month degree of ith month of the new energy power planti，tDecomposing the medium-term and long-term contract electric quantity for the new energy power plant i at the t moment;
if Vi remains ofGreater than or equal to 30%, then Qi，t＝max(Pi, t prediction，Pi suit×30％)；
Wherein, Vi remains ofFor monthly capacity residual load rate, Qi，tDecomposing the ith moment of the new energy power plant to obtain medium and long term contract electric quantity Pi, t predictionA predicted value P of new energy output of the new energy power plant i at the t momenti suitThe installed capacity of the unit i;
the total distributed power generation space of all new energy power plants at a certain moment is determined by the following formula:
wherein Q isHas been distributed,tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedi，tDecomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity;
the total residual distribution power generation space of all new energy power plants at a certain moment is determined by the following formula:
Qsurplus of new energy t＝QNew energy resource－QAllocated, t；
Wherein Q isSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space QAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedNew energy resourceThe total power generation space of new energy.
Further, when the remaining allocated power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment, allocating the remaining allocated power generation space according to the monthly electric quantity remaining proportion of each new energy power plant, specifically:
if it is
Then
Wherein Q isi,tDecomposing the ith moment of the new energy power plant to obtain medium and long term contract electric quantity QSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space Qi, prediction, tAnd predicting an active output value for the t-th moment of the new energy power plant i.
An embodiment of the present invention further provides a system for decomposing a new energy transaction curve considering medium-long term contracts, including:
the first calculation module is used for calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trading contracts of each new energy power plant before the current market is opened;
the second calculation module is used for calculating the total power generation space, monthly surplus energy and monthly surplus load rate of each new energy power plant according to the set time interval based on the boundary conditions of the spot market;
the third calculation module is used for executing contract electric quantity, monthly residual electric quantity and monthly electric quantity residual load rate according to the monthly degrees of all the new energy power plants and calculating the total residual distribution power generation space of all the new energy power plants at a certain moment;
and the distribution module is used for distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment.
Further, the distribution module is further configured to redistribute the remaining distributed power generation space after distribution according to a power abandoning rate ratio caused by the primary distribution plan of each new energy power plant at the moment.
An embodiment of the present invention further provides a server, including:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the new energy trade curve decomposition method for medium-and long-term contracts in consideration as described above.
Compared with the prior art, the method and the device have the advantages that the method and the device are based on the boundary conditions of the spot market, the new energy power plant contract is decomposed, so that the connection and transition between the medium-long term trade contract and the spot market are realized, and technical support is provided for the development of the spot market in the high-proportion new energy region.
The embodiment of the invention fully considers the current situation of reformation and development of electric power marketization in China and the policy of maximum consumption of new energy, realizes the ordered connection of spot transaction and medium-and-long-term transaction by ensuring the physical execution of medium-and-long-term transaction contracts, and ensures that the spot market design and operation have feasibility and operability. The embodiment of the invention can embed an independent functional module into a dispatching spot market technical support system to be used as an electric power market settlement basis, and has strong practicability.
Drawings
Fig. 1 is a flowchart of a new energy transaction curve decomposition method considering medium-long term contracts according to a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of a new energy transaction curve decomposition method considering medium-long term contracts according to a second embodiment of the present invention.
FIG. 3 is another schematic flow chart of a new energy transaction curve decomposition method considering medium-long term contracts according to a second embodiment of the present invention
Fig. 4 is a system block diagram of a new energy transaction curve decomposition system considering medium-long term contracts according to a third embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
The first embodiment of the present invention:
referring to fig. 1, a new energy transaction curve decomposition method considering medium and long term contracts includes:
and S1, calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trade contracts of each new energy power plant before the current market is opened.
Specifically, the present step comprises 4 sub-steps:
s1-1, reading middle and long term trading contracts of different types of new energy power plants in different years, wherein the contracts comprise different component electric quantities and corresponding prices.
Wherein, the different component electric quantity refers to annual base electric quantity, annual priority generation electric quantity and annual direct trading electric quantity. The annual base electric quantity and the annual priority power generation electric quantity are distributed to each power plant by a government department according to the principles of 'three public dispatching' and 'new energy priority', and the price is the price of the benchmarking electricity. The annual direct transaction electric quantity comprises annual bilateral transaction and annual bidding transaction, and the power plant and the user sign bilateral agreement to determine the transaction electric quantity and the price.
Recording the annual base number of the power plant i as Yi BSThe annual priority generated electricity quantity is Yi FPAnnual direct trading of electricity Yi LCIn hundred million kilowatt-hours. The electricity price of the annual base number is lambdai BSThe electricity price of the prior generated electricity is lambdai FPAnnual direct trading of electricity quantity and price lambdai LCUnit is yuan/kilowatt-hour.
And S1-2, decomposing the annual electric quantity of each new energy power plant to a month.
Decomposing annual base number electric quantity, annual priority generation electric quantity and annual direct trading electric quantity to the month on the basis of comprehensively considering factors such as the power supply and demand situation of each month, the electric quantity demand in the heat supply period, the power grid and unit maintenance plan, the annual contract execution progress and the like to form a monthly electric quantity decomposition plan of each new energy power plant, wherein the monthly decomposition base number electric quantity corresponding to the mth month of the power plant is counted
Monthly decomposition priority generation electric quantity calculation
Monthly decomposition direct transaction electric quantity calculation
And S1-3, reading monthly direct transaction electric quantity and corresponding price of each new energy power plant.
The monthly direct transaction electric quantity comprises 0-3 of monthly bilateral transaction, monthly bidding transaction and contract transfer transaction. If the power plant i does not conduct monthly direct transactions in month m, then,
order to
Wherein the content of the first and second substances,
directly trading the electricity quantity in hundred million kilowatt hours for the mth month and the degree of the power plant i; lambda [ alpha ]i LBThe corresponding price is in units of yuan/kilowatt-hour.
If the power plant i carries out multiple monthly direct transactions in the mth month, the monthly direct transaction electric quantity is the sum of each transaction electric quantity, and the corresponding price is the weighted average electricity price.
And S1-4, calculating monthly execution contract electric quantity plans of the power plants.
And summarizing the monthly electric quantity decomposition plans and the monthly direct transaction electric quantity to form monthly execution contract electric quantity of each new-year energy power plant.
The monthly execution contract electric quantity of each new energy power plant is determined by the following formula:
wherein the content of the first and second substances,
executing a contract electric quantity plan for the mth month of the power plant i,
in order to resolve the base electricity quantity monthly,
for the monthly decomposition of the electricity generated by the power generation priority,
for monthly decomposition of direct transaction electricity,
the electricity is traded directly for monthly.
And S2, calculating the total power generation space of the energy, the monthly residual capacity of each new energy power plant and the monthly residual load rate according to the set time interval based on the boundary conditions of the spot market.
The spot market boundary conditions comprise the intra-provincial unit next-day power generation amount and the next-day predicted output of each new energy power plant;
the intra-provincial unit next-day power generation amount comprises the intra-provincial 96-point load prediction and the inter-provincial link plan next day, and is determined by the following formula:
Qgeneral assembly＝QIn province+QProvince room
Wherein Q isGeneral assemblyFor saving all the power consumption of the units, QIn provinceFor saving all electrical loads, QProvince roomPlans for inter-provincial links.
The total new energy power generation space is determined by the following formula:
Qnew energy resource＝min(QIn province+QProvince room，QPrediction)
Wherein Q isNew energy resourceFor new energy total power generation space, QPredictionAnd generating capacity is predicted for the new energy power plant in a short term.
And S3, calculating the total residual distribution power generation space of all the new energy power plants at a certain moment according to monthly execution contract electric quantity, monthly residual electric quantity and monthly residual load rate of each new energy power plant.
The method specifically comprises the following steps:
if it is
Then Q isi，t＝0；
Wherein the content of the first and second substances,
executing contract electric quantity, Q, for the month degree of ith month of the new energy power planti，tDecomposing the medium-term and long-term contract electric quantity for the new energy power plant i at the t moment;
if Vi remains ofGreater than or equal to 30%, then Qi，t＝max(Pi, t prediction，Pi suit×30％)；
Wherein, Vi remains ofFor monthly capacity residual load rate, Qi，tDecomposing the ith moment of the new energy power plant to obtain medium and long term contract electric quantity Pi, t predictionA predicted value P of new energy output of the new energy power plant i at the t momenti suitThe installed capacity of the unit i;
the total distributed power generation space of all new energy power plants at a certain moment is determined by the following formula:
wherein Q isAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedi，tDecomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity;
the total residual distribution power generation space of all new energy power plants at a certain moment is determined by the following formula:
Qsurplus of new energy t＝QNew energy resource－QAllocated, t；
Wherein Q isSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space QAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedNew energy resourceThe total power generation space of the new energy power plant.
And S4, when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment, distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant.
The method specifically comprises the following steps:
if it is
Then
QSurplus of new energy tCan be distributed for the rest new energy power plant at the t momentGenerating space, Qi, prediction, tPredicting an active output value, Q, for the ith moment of the new energy power planti,tAnd decomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity.
It should be noted that the surplus distribution power generation space is distributed according to the monthly electricity surplus proportion of each new energy power plant, so as to obtain a surplus power generation space distribution plan. Finally, the medium-long term plan of the plant station at the moment is the sum of the primary distribution plan and the residual power generation space distribution plan.
The embodiment of the invention can decompose the new energy power plant contract based on the spot market boundary condition, realize the connection and transition between the medium and long term trade contract and the spot market, and provide technical support for the development of the spot market in the high-proportion new energy region.
The embodiment of the invention fully considers the current situation of reformation and development of electric power marketization in China and the policy of maximum consumption of new energy, realizes the ordered connection of spot transaction and medium-and-long-term transaction by ensuring the physical execution of medium-and-long-term transaction contracts, and ensures that the spot market design and operation have feasibility and operability. The embodiment of the invention can embed an independent functional module into a dispatching spot market technical support system to be used as an electric power market settlement basis, and has strong practicability.
Second embodiment:
referring to fig. 2 to fig. 3, on the basis of the first embodiment, after the allocating the surplus allocated power generation space according to the monthly electricity surplus proportion of each new energy power plant, the method further includes:
and redistributing the residual distributed power generation space after the distribution according to the power abandoning rate proportion caused by the primary distribution plan of each new energy power plant at the moment.
In the present embodiment, the remaining allocated power generation space after the allocation can be allocated again, thereby forming an allocation plan remaining power generation space allocation plan. Finally, the medium-long term plan of the plant station at the moment is the sum of the primary distribution plan and the residual power generation space distribution plan.
The embodiment of the invention can decompose the new energy power plant contract based on the spot market boundary condition, realize the connection and transition between the medium and long term trade contract and the spot market, and provide technical support for the development of the spot market in the high-proportion new energy region.
The embodiment of the invention fully considers the current situation of reformation and development of electric power marketization in China and the policy of maximum consumption of new energy, realizes the ordered connection of spot transaction and medium-and-long-term transaction by ensuring the physical execution of medium-and-long-term transaction contracts, and ensures that the spot market design and operation have feasibility and operability. The embodiment of the invention can embed an independent functional module into a dispatching spot market technical support system to be used as an electric power market settlement basis, and has strong practicability.
The third embodiment:
referring to fig. 4, an embodiment of the present invention further provides a new energy transaction curve decomposition system considering medium-long term contracts, including:
the first calculation module 11 is configured to calculate monthly execution contract electric quantity of each new energy power plant according to all medium and long term trade contracts of each new energy power plant before the current market is opened.
Specifically, the first calculation module is used for,
s1-1, reading middle and long term trading contracts of different types of new energy power plants in different years, wherein the contracts comprise different component electric quantities and corresponding prices.
Wherein, the different component electric quantity refers to annual base electric quantity, annual priority generation electric quantity and annual direct trading electric quantity. The annual base electric quantity and the annual priority power generation electric quantity are distributed to each power plant by a government department according to the principles of 'three public dispatching' and 'new energy priority', and the price is the price of the benchmarking electricity. The annual direct transaction electric quantity comprises annual bilateral transaction and annual bidding transaction, and the power plant and the user sign bilateral agreement to determine the transaction electric quantity and the price.
Recording the annual base number of the power plant i as Yi BSThe annual priority generated electricity quantity is Yi FPAnnual direct trading of electricity Yi LCIn hundred million kilowatt-hours. The electricity price of the annual base number is lambdai BSThe electricity price of the prior generated electricity is lambdai FPYear of yearDirect trading of electricity quantity and price lambdai LCUnit is yuan/kilowatt-hour.
And S1-2, decomposing the annual electric quantity of each new energy power plant to a month.
Decomposing annual base number electric quantity, annual priority generation electric quantity and annual direct trading electric quantity to the month on the basis of comprehensively considering factors such as the power supply and demand situation of each month, the electric quantity demand in the heat supply period, the power grid and unit maintenance plan, the annual contract execution progress and the like to form a monthly electric quantity decomposition plan of each new energy power plant, wherein the monthly decomposition base number electric quantity corresponding to the mth month of the power plant is counted
Monthly decomposition priority generation electric quantity calculation
Monthly decomposition direct transaction electric quantity calculation
And S1-3, reading monthly direct transaction electric quantity and corresponding price of each new energy power plant.
The monthly direct transaction electric quantity comprises 0-3 of monthly bilateral transaction, monthly bidding transaction and contract transfer transaction. If the power plant i does not conduct monthly direct transactions in month m, then,
order to
Wherein the content of the first and second substances,
directly trading the electricity quantity in hundred million kilowatt hours for the mth month and the degree of the power plant i; lambda [ alpha ]i LBThe corresponding price is in units of yuan/kilowatt-hour.
If the power plant i carries out multiple monthly direct transactions in the mth month, the monthly direct transaction electric quantity is the sum of each transaction electric quantity, and the corresponding price is the weighted average electricity price.
And S1-4, calculating monthly execution contract electric quantity plans of the power plants.
And summarizing the monthly electric quantity decomposition plans and the monthly direct transaction electric quantity to form monthly execution contract electric quantity of each new-year energy power plant.
The monthly execution contract electric quantity of each new energy power plant is determined by the following formula:
wherein the content of the first and second substances,
executing a contract electric quantity plan for the mth month of the power plant i,
in order to resolve the base electricity quantity monthly,
for the monthly decomposition of the electricity generated by the power generation priority,
for monthly decomposition of direct transaction electricity,
the electricity is traded directly for monthly.
And the second calculating module 12 is configured to calculate a total power generation space, monthly remaining power, and monthly remaining load factor of each new energy power plant according to a set time interval based on the spot market boundary condition.
The spot market boundary conditions comprise the intra-provincial unit next-day power generation amount and the next-day predicted output of each new energy power plant;
the intra-provincial unit next-day power generation amount comprises the intra-provincial 96-point load prediction and the inter-provincial link plan next day, and is determined by the following formula:
Qgeneral assembly＝QIn province+QProvince room
Wherein Q isGeneral assemblyFor saving all the power consumption of the units, QIn provinceFor saving all electrical loads, QProvince roomPlans for inter-provincial links.
The total new energy power generation space is determined by the following formula:
Qnew energy resource＝min(QIn province+QProvince room，QPrediction)
Wherein Q isNew energy resourceFor new energy total power generation space, QPredictionAnd generating capacity is predicted for the new energy power plant in a short term.
And a third calculating module 13, configured to calculate a total surplus distribution power generation space of all new energy power plants at a certain time according to monthly execution contract power of each new energy power plant and monthly remaining power surplus load rate of monthly remaining power of each new energy power plant.
The method specifically comprises the following steps:
if it is
Then Q isi，t＝0；
Wherein the content of the first and second substances,
executing contract electric quantity, Q, for the month degree of ith month of the new energy power planti，tDecomposing the medium-term and long-term contract electric quantity for the new energy power plant i at the t moment;
if Vi remains ofGreater than or equal to 30%, then Qi，t＝max(Pi, t prediction，Pi suit×30％)；
Wherein, Vi remains ofFor monthly capacity residual load rate, Qi，tDecomposing the ith moment of the new energy power plant to obtain medium and long term contract electric quantity Pi, t predictionA predicted value P of new energy output of the new energy power plant i at the t momenti suitThe installed capacity of the unit i;
the total distributed power generation space of all new energy power plants at a certain moment is determined by the following formula:
wherein Q isAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedi，tDecomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity;
the total residual distribution power generation space of all new energy power plants at a certain moment is determined by the following formula:
Qsurplus of new energy t＝QNew energy resource－QAllocated, t；
Wherein Q isSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space QAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedNew energy resourceThe total power generation space of the new energy power plant.
And the distribution module 14 is configured to distribute the surplus distributed power generation space according to the monthly electric quantity surplus proportion of each new energy power plant when the surplus distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment.
The method specifically comprises the following steps:
if it is
Then
QSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space Qi, prediction, tPredicting an active output value, Q, for the ith moment of the new energy power planti,tAnd decomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity.
It should be noted that the surplus distribution power generation space is distributed according to the monthly electricity surplus proportion of each new energy power plant, so as to obtain a surplus power generation space distribution plan. Finally, the medium-long term plan of the plant station at the moment is the sum of the primary distribution plan and the residual power generation space distribution plan.
The embodiment of the invention can decompose the new energy power plant contract based on the spot market boundary condition, realize the connection and transition between the medium and long term trade contract and the spot market, and provide technical support for the development of the spot market in the high-proportion new energy region.
The embodiment of the invention fully considers the current situation of reformation and development of electric power marketization in China and the policy of maximum consumption of new energy, realizes the ordered connection of spot transaction and medium-and-long-term transaction by ensuring the physical execution of medium-and-long-term transaction contracts, and ensures that the spot market design and operation have feasibility and operability. The embodiment of the invention can embed an independent functional module into a dispatching spot market technical support system to be used as an electric power market settlement basis, and has strong practicability.
The fourth embodiment:
on the basis of the third embodiment, the allocation module 14 is further configured to allocate the remaining allocated power generation space after allocation again according to the power abandonment rate ratio caused by the primary allocation plan of each new energy power plant at that time.
In the present embodiment, the remaining allocated power generation space after the allocation can be allocated again, thereby forming an allocation plan remaining power generation space allocation plan. Finally, the medium-long term plan of the plant station at the moment is the sum of the primary distribution plan and the residual power generation space distribution plan.
The embodiment of the invention can decompose the new energy power plant contract based on the spot market boundary condition, realize the connection and transition between the medium and long term trade contract and the spot market, and provide technical support for the development of the spot market in the high-proportion new energy region.
The embodiment of the invention fully considers the current situation of reformation and development of electric power marketization in China and the policy of maximum consumption of new energy, realizes the ordered connection of spot transaction and medium-and-long-term transaction by ensuring the physical execution of medium-and-long-term transaction contracts, and ensures that the spot market design and operation have feasibility and operability. The embodiment of the invention can embed an independent functional module into a dispatching spot market technical support system to be used as an electric power market settlement basis, and has strong practicability.
Fifth embodiment:
an embodiment of the present invention further provides a server, including:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the new energy trade curve decomposition method for medium-and long-term contracts in consideration as described above.
It is emphasized that the link between the method for generating settlement curves for different types of medium and long term transaction varieties involved in the implementation steps of the method and the spot market clearing curves can be flexibly adjusted according to the actual transaction operation condition of the power system. The above implementation steps are only used for illustrating the technical scheme of the invention and are not limited. Any modification or partial replacement without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.
Claims (10)
1. A new energy transaction curve decomposition method considering medium and long term contracts is characterized by comprising the following steps:
calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trade contracts of each new energy power plant before the current market is opened;
based on the boundary conditions of the spot market, calculating the total power generation space of the new energy, the monthly residual electric quantity and the monthly electric quantity residual load rate of each new energy power plant according to a set time interval;
calculating the total residual distribution power generation space of all the new energy power plants at a certain moment according to monthly execution contract electric quantity, monthly residual electric quantity and monthly electric quantity residual load rate of each new energy power plant;
and when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment, distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant.
2. The method of claim 1, further comprising, after allocating the surplus allocated power generation space to a monthly surplus proportion of each new energy power plant:
and redistributing the residual distributed power generation space after the distribution according to the power abandoning rate proportion caused by the primary distribution plan of each new energy power plant at the moment.
3. The method according to claim 1, wherein the monthly execution contract electric quantity of each new energy power plant is calculated according to all medium and long term trade contracts of each new energy power plant before the spot market is opened, and specifically:
reading medium and long term trading contracts of different types of new energy power plants in different types of years, wherein the medium and long term trading contracts comprise different component electric quantities and corresponding prices;
decomposing the annual electric quantity of each new energy power plant to a month, and reading the monthly direct transaction electric quantity and corresponding price of each new energy power plant;
calculating monthly execution contract electric quantity of each new energy power plant according to the following formula:
wherein the content of the first and second substances,
in order to resolve the base electricity quantity monthly,
for the monthly decomposition of the electricity generated by the power generation priority,
for monthly decomposition of direct transaction electricity,
the electricity is traded directly for monthly.
4. The method of claim 3, wherein the spot market boundary conditions include intra-provincial unit next-day power generation and each new energy plant next-day forecasted output;
the next day power generation amount of the provincial unit is determined by the following formula:
Qgeneral assembly＝QIn province+QProvince room
Wherein Q isGeneral assemblyFor saving all the power consumption of the units, QIn provinceFor saving all electrical loads, QProvince roomPlans for inter-provincial links.
5. The method of claim 4, wherein the total new energy generation space is determined by the following equation:
Qnew energy resource＝min(QIn province+QProvince room，QPrediction)
Wherein Q isNew energy resourceFor new energy total power generation space, QPredictionAnd generating capacity is predicted for the new energy power plant in a short term.
6. The method according to claim 5, wherein the step of calculating the total surplus distribution power generation space of all the new energy power plants at a certain moment according to the monthly execution contract power, the monthly surplus power and the monthly surplus load rate of each new energy power plant comprises the following steps:
if it is
Then Q isi，t＝0；
Wherein the content of the first and second substances,
executing contract electric quantity, Q, for the month degree of ith month of the new energy power planti，tDecomposing the medium-term and long-term contract electric quantity for the new energy power plant i at the t moment;
if Vi remains ofGreater than or equal to 30%, then Qi，t＝max(Pi, t prediction，Pi suit×30％)；
Wherein, Vi remains ofIs monthly electric quantityResidual load factor, Qi，tDecomposing the ith moment of the new energy power plant to obtain medium and long term contract electric quantity Pi, t predictionA predicted value P of new energy output of the new energy power plant i at the t momenti suitThe installed capacity of the unit i;
the total distributed power generation space of all new energy power plants at a certain moment is determined by the following formula:
wherein Q isAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedi，tDecomposing the new energy power plant i at the t moment to obtain medium and long term contract electric quantity;
the total residual distribution power generation space of all new energy power plants at a certain moment is determined by the following formula:
Qsurplus of new energy t＝QNew energy resource－QAllocated, t；
Wherein Q isSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space QAllocated, tFor the time t, the quantity of electricity, Q, of the medium-long term contract curve has been allocatedNew energy resourceThe total power generation space of new energy.
7. The method according to claim 6, wherein when the remaining allocated power generation space is smaller than the sum of predicted power output values of all new energy power plants at the moment, the remaining allocated power generation space is allocated according to the monthly power remaining proportion of each new energy power plant, specifically:
if it is
Then
Wherein Q isi,tObtaining a medium-long term alloy for the i (t) th time decomposition of a new energy power plantAbout quantity of electricity, QSurplus of new energy tThe t moment of the residual new energy power plant can be distributed with a power generation space Qi, prediction, tAnd predicting an active output value for the t-th moment of the new energy power plant i.
8. A new energy transaction curve decomposition system considering medium and long term contracts, comprising:
the first calculation module is used for calculating monthly execution contract electric quantity of each new energy power plant according to all medium and long term trading contracts of each new energy power plant before the current market is opened;
the second calculation module is used for calculating the total power generation space, monthly surplus energy and monthly surplus load rate of each new energy power plant according to the set time interval based on the boundary conditions of the spot market;
the third calculation module is used for executing contract electric quantity and monthly residual electric quantity residual load rate according to the monthly degree of each new energy power plant and calculating the total residual distribution power generation space of all the new energy power plants at a certain moment;
and the distribution module is used for distributing the residual distributed power generation space according to the monthly electric quantity residual proportion of each new energy power plant when the residual distributed power generation space is smaller than the sum of the predicted power output values of all the new energy power plants at the moment.
9. The system of claim 8, wherein the allocation module is further configured to reallocate the remaining allocated power generation space after allocation in proportion to the power rejection rate of the primary allocation plan at the time of each new energy plant.
10. A server, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a new energy trade curve decomposition method for a medium-to-long term contract in view of any of claims 1-7.
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