CN112257926B - Energy block power trading system and clearing method based on regional electricity price - Google Patents
Energy block power trading system and clearing method based on regional electricity price Download PDFInfo
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Abstract
The invention relates to an energy block power trading system and a clearing method based on partition electricity price, comprising a parameter configuration module, a data input module, a trading clearing module and a data output module; the parameter configuration module: various parameters required for configuring the energy block power transaction system and the clearing method; the data input module is used for: the method is used for inputting declaration loads and declaration prices of different market main bodies, different time periods and different energy blocks; the transaction clearing module: the system comprises a data input module, a data processing module, a power management module and a power management module, wherein the data input module is used for inputting and processing declaration data, performing energy block power transaction clearing, and calculating to obtain settlement prices and winning loads of different partitions and different time periods; the data output module is used for: for outputting settlement prices of different partitions and different time periods. The invention can lead the clearing result of the power transaction to more accord with the power generation technical characteristics and the power transaction requirements of various market subjects, and the power generation curves and the settlement prices of the market subjects are more reasonable.
Description
Technical Field
The invention belongs to the technical field of power transaction, relates to an energy block power transaction system and a clearing method, and particularly relates to an energy block power transaction system and a clearing method based on regional electricity prices.
Background
At present, the new power system reform of China starts formally. The method promotes the reform of the electric power transaction system, perfects the market-oriented transaction mechanism, and is one of the key tasks of the reform of the new electric power system. Along with the continuous deepening of the electric power system and the continuous expansion of the electric power transaction scale, the electric power market construction is gradually changed to the process of exploring and establishing the electric power spot market, and at present 8 provinces of Guangdong, zhejiang, shandong and the like are started to perform the electric power spot market settlement test operation according to the related file requirements of national delivery and change commission. However, according to the condition of settlement test run, the existing power spot transaction system and the clearing method still have the following problems: ① At present, thermal power generation in China is still one of the most basic and important power supply modes in China, but the condition of frequent start-up and shutdown and abrupt change of output exists in the thermal power generation in the power spot market, so that certain technical problems are brought to the safe and stable operation of a generator set; ② The existing power spot transaction system and the clearing method mainly consider the load condition of 1 day in the future, are difficult to effectively cope with the abrupt change condition of the load caused by holidays, weather and other factors, and bring great risks and hidden hazards to the safe and stable operation of the power system.
Therefore, a novel power transaction system and a clearing method are needed, and the technical problems existing in the existing power spot transaction system and clearing method are solved. The main body of the multi-element market such as thermal power generation, hydroelectric power generation, wind power generation, photovoltaic power generation, nuclear power, energy storage, power users, electric automobiles, virtual power plants and the like can automatically declare corresponding power trade demands according to the power generation technical characteristics of the main body. Through the power transaction system and the clearing method, the clearing result of the power transaction is more in line with the power generation technical characteristics and the power transaction requirements of all market subjects, the power generation curves and the settlement prices of the market subjects are more reasonable, and further optimal configuration of power resources can be realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an energy block power trading system and a clearing method based on partition electricity price, which can enable the clearing result of power trading to more accord with the power generation technical characteristics and power trading requirements of various market subjects, thereby realizing further optimal configuration of power resources.
The invention solves the practical problems by adopting the following technical scheme:
The energy block power trading system based on the partitioned electricity price comprises a parameter configuration module, a data input module, a trading clearing module and a data output module;
(1) The parameter configuration module: various parameters required for configuring the energy block power transaction system and the clearing method;
(2) The data input module is used for: the method is used for inputting declaration loads and declaration prices of different market main bodies, different time periods and different energy blocks, processing declaration data and converting the declaration data into a standardized and unified data form of the energy block power transaction clearing method;
(3) The transaction clearing module: the system comprises a data input module, a data processing module, a power module management module and a power module management module, wherein the data input module is used for inputting and processing declaration data, carrying out energy block power transaction clearing, and calculating to obtain settlement prices of different partitions and different time periods and winning loads of different market main bodies, different time periods and different energy blocks;
(4) The data output module is used for: and the settlement price of different partitions and different time periods, and the winning load and settlement cost of different market bodies, different time periods and different energy blocks are output according to the calculation result of the transaction clearing module.
Moreover, the parameter configuration modules include, but are not limited to, a basic parameter configuration module, a market subject configuration module, and an energy block configuration module;
① Basic parameter configuration: various basic parameters for configuring the power transaction and clearing, including but not limited to the power system network topology, network partitions and their number, the links between network partitions and their number, the technical parameters of network partitions and links, the load transfer factor between network partitions and links;
② Market subject configuration: various parameters for configuring market bodies involved in power transactions, including but not limited to the type of generation of the genset, the location of the division, installed capacity, maximum and minimum technical output, ramp rate, typical generation profile, the voltage class, the partition where the power consumer is located, the typical power consumption curve, the energy storage, the installed capacity of the virtual power plant and the response rate;
③ Energy block configuration: various parameters for configuring the energy blocks, including but not limited to conventional hours, conventional blocks, and upper and lower limits on reporting load and reporting price for flexible hours, up to the number of winning bid periods that can be declared.
The utility model provides a method for clearing energy block power transaction based on partition electricity price, which is applied to a transaction clearing module of an energy block power transaction system and comprises the following steps:
Step 1, setting an optimization variable, an objective function and a constraint condition of an energy block power transaction clearing model according to declaration data processed by a data input module of an energy block power transaction system;
Step 2, solving an energy block power transaction clearing model, and calculating a clearing result;
and 3, calculating settlement prices of different partitions and different time periods.
Moreover, the specific steps of the step 1 include:
(1) The optimization variables are bid-winning marks of conventional hours, conventional blocks and flexible hours;
according to the bid-winning rule of the energy block, the bid-winning mark in the conventional hour is a real variable between 0 and 1, and the bid-winning marks in the conventional block and the flexible hour are integer variables of 0 or 1; the winning bid load of the main body energy block of the market is the product of winning bid identification and declaration load, and the calculation formula is as follows:
Wherein, Bid amount, declaration amount, bid identification for regular hours of period t partition i market subject j,/>Bid load, declared power, bid flag, start time, end time,/>, for a regular block m of a period t partition i market subject j Dividing a winning bid load, a declaration load, a winning bid identification of winning bid time period c and winning bid time period of flexible hours n of a market subject j for a time period t;
(2) Setting an objective function to maximize the sum of market residuals obtained by all market subjects in the energy block power trading clearing process, wherein the calculation formula is as follows:
wherein F is an objective function of the energy block power transaction model, The declaration price of the market subject j is divided into a regular hour, a regular block m and a flexible hour n for the period t;
(3) The constraint conditions are set as technical conditions which must be met in the process of clearing the power transaction of the energy block, and comprise unit output constraint, unit climbing constraint, power balance constraint, tie line power flow constraint, system rotation standby constraint, normal hour winning constraint, flexible hour winning constraint and the like.
① The unit output constraint, the unit output is between the upper limit and the lower limit of the technical output, and the calculation formula is as follows:
Wherein, Output of i machine set j is partitioned for period t,/>The technical output upper limit and the technical output lower limit of the partition i machine set j are set;
② The unit climbing constraint is that the unit output of different time periods is between the upper limit and the lower limit of the climbing rate, and the calculation formula is as follows:
Wherein, The upper limit and the lower limit of the climbing rate of the unit j of the partition i are adopted;
③ And the total power generation of different time periods is equal to the total power consumption under the constraint of power balance, and the calculation formula is as follows:
Wherein, Partitioning the inherent load of i for period t;
④ And the tie line power flow is constrained, the tie line power flow is not out of limit, and a calculation formula is as follows between the upper limit and the lower limit of the tie line power:
Wherein, For a period t of power flow of tie k, h k,i is the power transfer distribution factor of partition i to tie k,The upper and lower power limits of tie line k;
⑤ Rotation reserve constraint, positive and negative rotation reserve is not less than rotation reserve capacity required by a system, and a calculation formula is as follows:
Wherein, min (·) is a minimum function, and P t srd、Pt srd is the positive and negative rotation spare capacities required by the system in period t;
⑥ The bid-winning load in the conventional hour is not more than the declaration load, and the calculation formula is as follows:
⑦ And (3) bid-winning constraint in flexible hours, wherein the flexible hours bid-winning time in a plurality of bid-winning time periods at most for 1 time, and the calculation formula is as follows:
moreover, the specific steps of the step 2 include:
(1) Calculating a winning bid permutation and combination of a conventional block and flexible hours; the declaration number of the conventional blocks is x, and the number of the bid-winning permutation and combination of the conventional blocks is 2 x; the number of declarations in the flexible hour is y, the number of winning bid time periods in the mth flexible hour is z m, and the number of winning bid permutation and combination in the flexible hour is The number of winning bid permutation and combination of the conventional block and the flexible hour is/>
(2) Traversing and cycling the bid-winning arrangement combination of each 1 conventional block and flexible hour, taking the bid-winning identification of the conventional block and flexible hour as a fixed variable, solving the bid-winning quantity of the conventional hour according to the principle of 'high-low matching and step queuing', and recording the corresponding objective function value;
(3) And comparing the objective function values of the conventional block, all the bid-winning permutation and combination in the flexible hour, wherein the objective function value is the minimum conventional block, the bid-winning permutation and combination in the flexible hour and the bid-winning load in the conventional hour, and obtaining the clear result of the power transaction of the energy block.
Moreover, the specific steps of the step 3 include:
(1) Solving an energy block power transaction clearing model to obtain the standard-winning electric quantity of a conventional block and flexible hours;
(2) Taking the bid amount of the conventional block and the bid amount of the flexible hour as a fixed variable, taking the bid mark of the conventional hour as an optimization variable, and solving the energy block power transaction clear model again without considering the bid constraint of the flexible hour to obtain the Lagrange multiplier of the bid amount of the conventional hour, the power balance constraint and the tie line power flow constraint;
(3) Calculating settlement prices of different partitions and different time periods, wherein the calculation formula is as follows:
Wherein, Settlement price for time period t partition i, # t,/>Lagrangian multipliers constrained for the power balance constraint of period t and the upper and lower limits of tie flow.
The invention has the advantages and beneficial effects that:
Aiming at the technical problems that the existing power spot transaction system and the existing clearing method are difficult to effectively ensure safe and stable operation of thermal power generation, certain safety risks and hidden hazards exist in operation of a power system and the like, the invention discloses an energy block power transaction system based on partition electricity price, provides a module function of the energy block power transaction system, and an energy block power transaction clearing method based on partition electricity price. The invention can lead the clearing result of the power transaction to more accord with the power generation technical characteristics and the power transaction requirements of various market subjects, and the power generation curves and the settlement prices of the market subjects are more reasonable. The invention can be applied to the actual work of provincial power market operation and management, and can realize the economic and reliable operation of a power system, the further optimal configuration of power resources and the health sustainable development of the power industry.
Drawings
FIG. 1 is a flow chart of a partitioned price based energy block power trading system and method of clearing of the present invention;
FIG. 2 is a flow chart of the present invention for solving a power trading clearing model for an energy block;
FIG. 3 is a flow chart of the present invention for calculating settlement prices for different partitions, different time periods;
FIG. 4 is a schematic diagram of a power system partition of the present invention;
FIG. 5 is a graph of the total power generation of the present invention after the energy block power transaction is cleared;
FIG. 6 is a graph of total power usage after the energy block power transaction of the present invention is cleared;
FIG. 7 is a schematic diagram of the settlement prices of different partitions and different time periods after the energy block power transaction of the invention is cleared.
Detailed Description
Embodiments of the invention are described in further detail below with reference to the attached drawing figures:
(1) The invention relates to a partition electricity price, which is to divide an electric power network into a plurality of partitions according to a certain rule. Market main body located in the same partition, settlement price is the same; market subjects located in different partitions have different settlement prices. The power system is a huge and complex system comprising a large number of power generation main bodies, and the regional power price can be achieved by considering the safety and reliability of the power system on the basis of reducing the complexity and the calculated amount of power transaction clearing, so that the overall arrangement and coordination between the economical efficiency of power transaction and the safety of power production are realized.
(2) The energy block refers to a declaration form of load and price of a market main body in electric power transaction, and the declaration form comprises a conventional hour, a conventional block and a flexible hour. The conventional hours refer to the fact that a market main body declares the load and the price of each time period, the loads of different time periods are mutually independent, and the winning load of each time period does not exceed the declared load of the corresponding time period; the conventional block refers to a market main body reporting single electric quantity and price, and starting time and ending time, wherein the electric quantity is evenly distributed between the starting time and the ending time and is converted into a load of each period, the price of the corresponding period is the reported price, and the loads of the corresponding period are either marked at the same time or not marked at the same time; flexible hours refer to the market subject declaring a single period of load and price, and a plurality of winning time periods, the corresponding load winning up to 1 time in the plurality of winning time periods.
The energy block power trading system based on the partitioned electricity price comprises a parameter configuration module, a data input module, a trading clearing module and a data output module;
(1) The parameter configuration module: various parameters required for configuring the energy block power transaction system and the clearing method;
the parameter configuration module comprises a basic parameter configuration module, a market main body configuration module and an energy block configuration module;
① Basic parameter configuration: various basic parameters for configuring power transactions and clearing are used, including but not limited to power system network topology, network partitions and numbers thereof, links between network partitions and numbers thereof, technical parameters of network partitions and links, load transfer factors between network partitions and links, and the like.
② Market subject configuration: various parameters for configuring market principals involved in power transactions, including, but not limited to, the type of generation of the genset, the location of the division, installed capacity, maximum and minimum technical output, ramp rate, typical power generation profile, voltage class of the power consumer, the location of the division, typical power usage profile, energy storage, installed capacity of the virtual power plant, response rate, and the like.
③ Energy block configuration: various parameters for configuring the energy blocks, including but not limited to conventional hours, conventional blocks, upper and lower limits on reporting load and reporting price for flexible hours, number of winning bid periods that can be reported at most for flexible hours, and the like.
(2) The data input module is used for: the method is used for inputting declaration loads and declaration prices of different market main bodies, different time periods and different energy blocks, processing declaration data and converting the declaration data into a standardized and unified data form suitable for the energy block power transaction clearing method;
(3) A transaction clearing module: the method is used for carrying out energy block power transaction clearing according to the declaration data input and processed by the data input module, and calculating to obtain settlement prices of different partitions and different time periods, and winning loads of different market main bodies, different time periods and different energy blocks;
(4) And the data output module is used for: and the settlement price of different partitions and different time periods, and the winning load and settlement cost of different market bodies, different time periods and different energy blocks are output according to the calculation result of the transaction clearing module.
The utility model provides an energy block power transaction clearing method based on partition electricity price, which is applied to a transaction clearing module of an energy block power transaction system, as shown in figure 1, and comprises the following 3 steps:
and step 1, setting an optimization variable, an objective function and a constraint condition of an energy block power transaction clearing model according to declaration data processed by a data input module of the energy block power transaction system.
The specific steps of the step1 comprise:
(1) The optimization variables are bid-winning marks of conventional hours, conventional blocks and flexible hours;
according to the bid-winning rule of the energy block, the bid-winning mark in the conventional hour is a real variable between 0 and 1, and the bid-winning marks in the conventional block and the flexible hour are integer variables of 0 or 1; the winning bid load of the main body energy block of the market is the product of winning bid identification and declaration load, and the calculation formula is as follows:
Wherein, Bid amount, declaration amount, bid identification for regular hours of period t partition i market subject j,/>Bid load, declared power, bid flag, start time, end time,/>, for a regular block m of a period t partition i market subject j Dividing a winning bid load, a declaration load, a winning bid identification of winning bid time period c and winning bid time period of flexible hours n of a market subject j for a time period t;
(2) Setting an objective function to maximize the sum of market residuals obtained by all market subjects in the energy block power trading clearing process, wherein the calculation formula is as follows:
wherein F is an objective function of the energy block power transaction model, The declaration price of the market subject j is divided into a regular hour, a regular block m and a flexible hour n for the period t;
(3) The constraint conditions are set as technical conditions which must be met in the process of clearing the power transaction of the energy block, and comprise unit output constraint, unit climbing constraint, power balance constraint, tie line power flow constraint, system rotation standby constraint, normal hour winning constraint, flexible hour winning constraint and the like.
① The unit output constraint, the unit output is between the upper limit and the lower limit of the technical output, and the calculation formula is as follows:
Wherein, Output of i machine set j is partitioned for period t,/>The technical output upper limit and the technical output lower limit of the partition i machine set j are set;
② The unit climbing constraint is that the unit output of different time periods is between the upper limit and the lower limit of the climbing rate, and the calculation formula is as follows:
Wherein, The upper limit and the lower limit of the climbing rate of the unit j of the partition i are adopted;
③ And the total power generation of different time periods is equal to the total power consumption under the constraint of power balance, and the calculation formula is as follows:
Wherein, Partitioning the inherent load of i for period t;
④ And the tie line power flow is constrained, the tie line power flow is not out of limit, and a calculation formula is as follows between the upper limit and the lower limit of the tie line power:
Wherein, For a period t of power flow of tie k, h k,i is the power transfer distribution factor of partition i to tie k,The upper and lower power limits of tie line k;
⑤ Rotation reserve constraint, positive and negative rotation reserve is not less than rotation reserve capacity required by a system, and a calculation formula is as follows:
Wherein, min (·) is a minimum function, and P t srd、Pt srd is the positive and negative rotation spare capacities required by the system in period t;
⑥ The bid-winning load in the conventional hour is not more than the declaration load, and the calculation formula is as follows:
⑦ And (3) bid-winning constraint in flexible hours, wherein the flexible hours bid-winning time in a plurality of bid-winning time periods at most for 1 time, and the calculation formula is as follows:
And step 2, solving an energy block power transaction clearing model, and calculating a clearing result.
As shown in fig. 2, the specific steps of the step 2 include:
(1) Calculating a winning bid permutation and combination of a conventional block and flexible hours; the declaration number of the conventional blocks is x, and the number of the bid-winning permutation and combination of the conventional blocks is 2 x; the number of declarations in the flexible hour is y, the number of winning bid time periods in the mth flexible hour is z m, and the number of winning bid permutation and combination in the flexible hour is The number of winning bid permutation and combination of the conventional block and the flexible hour is/>
(2) Traversing and cycling the bid-winning arrangement combination of each 1 conventional block and flexible hour, taking the bid-winning identification of the conventional block and flexible hour as a fixed variable, solving the bid-winning quantity of the conventional hour according to the principle of 'high-low matching and step queuing', and recording the corresponding objective function value;
(3) And comparing the objective function values of the conventional block, all the bid-winning permutation and combination in the flexible hour, wherein the objective function value is the minimum conventional block, the bid-winning permutation and combination in the flexible hour and the bid-winning load in the conventional hour, and obtaining the clear result of the power transaction of the energy block.
And 3, calculating settlement prices of different partitions and different time periods.
As shown in fig. 3, the specific steps of the step 3 include:
(1) And solving an energy block power transaction clear model to obtain the conventional block and flexible hour winning amount.
(2) And taking the bid amount of the conventional block and the bid amount of the flexible hour as a fixed variable, taking the bid mark of the conventional hour as an optimization variable, and solving the energy block power transaction clear model again without considering the bid constraint of the flexible hour to obtain the Lagrange multiplier of the bid amount of the conventional hour, the power balance constraint and the tie line power flow constraint.
(3) Calculating settlement prices of different partitions and different time periods, wherein the calculation formula is as follows:
Wherein, Settlement price for time period t partition i, # t,/>Lagrangian multipliers constrained for the power balance constraint of period t and the upper and lower limits of tie flow.
The invention is further described in connection with specific embodiments below:
taking a simple power system of 5 generator sets and 5 power consumers as an example, the rationality and effectiveness of the present invention will be described. As shown in fig. 4, the power system is divided into 5 partitions, 6 connecting lines are arranged between the 5 partitions, and the technical parameters of the power system partitions and the connecting lines are shown in table 1 and table 2.
Table 1 technical parameters of the power system partition
| Numbering device | Type(s) | Conductivity of | Susceptance | Reference voltage | Maximum voltage | Minimum voltage |
| 1 | 2 | 1 | 1 | 220 | 1.1 | 0.9 |
| 2 | 1 | 0 | 1 | 220 | 1.1 | 0.9 |
| 3 | 2 | 0 | 1 | 220 | 1.1 | 0.9 |
| 4 | 3 | 0 | 1 | 220 | 1.1 | 0.9 |
| 5 | 2 | 1 | 1 | 220 | 1.1 | 0.9 |
Table 2 technical parameters of tie lines
| Numbering device | Start node | Termination node | Resistor | Reactance of | Susceptance | Power quota |
| 1 | 1 | 2 | 0.00281 | 0.0281 | 0.00712 | 1200 |
| 2 | 1 | 4 | 0.00304 | 0.0304 | 0.00658 | 500 |
| 3 | 1 | 5 | 0.00064 | 0.0064 | 0.03126 | 500 |
| 4 | 2 | 3 | 0.00108 | 0.0108 | 0.01852 | 800 |
| 5 | 3 | 4 | 0.00297 | 0.0297 | 0.00674 | 800 |
The technical parameters of the generator set are shown in table 3.
Table 3 technical parameters of the genset
| Numbering device | The partition is located | Type of power generation | Capacity of installation | Maximum technical output | Minimum technical output | Climbing rate |
| 1 | 1 | Thermal power generation | 300×2 | 600 | 150 | 1.5％ |
| 2 | 1 | Thermal power generation | 600×2 | 1200 | 300 | 1.5％ |
| 3 | 3 | Thermal power generation | 1000×2 | 2000 | 500 | 1.5％ |
| 4 | 4 | Nuclear power | 900×2 | 1800 | 450 | 0.5％ |
| 5 | 5 | Gas power generation | 300 | 300 | 75 | 3.0％ |
And the different market bodies report the energy blocks according to the technical parameters, the power generation load curve and the power transaction requirements.
As shown in fig. 5, 6 and 7, according to the energy block power trading system and the clearing method based on the regional power price, the total power generation curve and the total power consumption curve after the energy block power trading is cleared and the settlement prices of different regions and different time periods are calculated.
As shown in table 3, under the two methods of power spot transaction clearing and energy block power transaction clearing based on partition electricity price, the invention has the advantages of safety and economy of a power system, safe and stable running condition of a generator set and change condition of unit electricity cost of power users.
Table 3 comparison of two power transactions
Compared with the power spot transaction system and the clearing method, the power transaction system and the clearing method for the energy block based on the regional power price can enable the clearing result of the power transaction to more accord with the power generation technical characteristics and the power transaction requirements of various market subjects, ensure safe and stable operation of a generator set, improve the safety and the economical efficiency of the power system, and realize the economic and reliable operation of the power system and the further optimized configuration of power resources.
It should be emphasized that the embodiments described herein are illustrative rather than limiting, and that this invention encompasses other embodiments which may be made by those skilled in the art based on the teachings herein and which fall within the scope of this invention.
Claims (5)
1. The utility model provides a method is cleared to energy gage block electric power transaction based on subregion price, is applied to the transaction of energy gage block electric power transaction system based on subregion price and clears module, its characterized in that: the method comprises the following steps:
Step 1, setting an optimization variable, an objective function and a constraint condition of an energy block power transaction clearing model according to declaration data processed by a data input module of an energy block power transaction system;
Step 2, solving an energy block power transaction clearing model, and calculating a clearing result;
step 3, calculating settlement prices of different partitions and different time periods;
the specific steps of the step1 comprise:
(1) The optimization variables are bid-winning marks of conventional hours, conventional blocks and flexible hours;
according to the bid-winning rule of the energy block, the bid-winning mark in the conventional hour is a real variable between 0 and 1, and the bid-winning marks in the conventional block and the flexible hour are integer variables of 0 or 1; the winning bid load of the main body energy block of the market is the product of winning bid identification and declaration load, and the calculation formula is as follows:
Wherein, Bid amount, declaration amount, bid identification for regular hours of period t partition i market subject j,/>Bid load, declared power, bid flag, start time, end time,/>, for a regular block m of a period t partition i market subject j Dividing a winning bid load, a declaration load, a winning bid identification of winning bid time period c and winning bid time period of flexible hours n of a market subject j for a time period t;
(2) Setting an objective function to maximize the sum of market residuals obtained by all market subjects in the energy block power trading clearing process, wherein the calculation formula is as follows:
wherein F is an objective function of the energy block power transaction model, The declaration price of the market subject j is divided into a regular hour, a regular block m and a flexible hour n for the period t;
(3) The constraint conditions are set as technical conditions which must be met in the process of clearing the power transaction of the energy block, and the technical conditions comprise unit output constraint, unit climbing constraint, power balance constraint, tie line power flow constraint, system rotation standby constraint, normal hour winning constraint and flexible hour winning constraint:
① The unit output constraint, the unit output is between the upper limit and the lower limit of the technical output, and the calculation formula is as follows:
Wherein, Output of i machine set j is partitioned for period t,/>The technical output upper limit and the technical output lower limit of the partition i machine set j are set;
② The unit climbing constraint is that the unit output of different time periods is between the upper limit and the lower limit of the climbing rate, and the calculation formula is as follows:
Wherein, The upper limit and the lower limit of the climbing rate of the unit j of the partition i are adopted;
③ And the total power generation of different time periods is equal to the total power consumption under the constraint of power balance, and the calculation formula is as follows:
Wherein, Partitioning the inherent load of i for period t;
④ And the tie line power flow is constrained, the tie line power flow is not out of limit, and a calculation formula is as follows between the upper limit and the lower limit of the tie line power:
Wherein, For a period t of power flow of tie k, h k,i is the power transfer distribution factor of partition i to tie k,The upper and lower power limits of tie line k;
⑤ Rotation reserve constraint, positive and negative rotation reserve is not less than rotation reserve capacity required by a system, and a calculation formula is as follows:
Wherein, min (·) is a minimum function, and P t sru、Pt srd is the positive and negative rotation spare capacities required by the system in period t;
⑥ The bid-winning load in the conventional hour is not more than the declaration load, and the calculation formula is as follows:
⑦ And (3) bid-winning constraint in flexible hours, wherein the flexible hours bid-winning time in a plurality of bid-winning time periods at most for 1 time, and the calculation formula is as follows:
2. The method for trading and clearing energy block power based on regional power price according to claim 1, wherein the method comprises the following steps: the energy block power trading system based on the partitioned electricity price comprises a parameter configuration module, a data input module, a trading clearing module and a data output module;
(1) The parameter configuration module: various parameters required for configuring the energy block power transaction system and the clearing method;
(2) The data input module is used for: the method is used for inputting declaration loads and declaration prices of different market main bodies, different time periods and different energy blocks, processing declaration data and converting the declaration data into a standardized and unified data form of an energy block power transaction clearing method;
(3) The transaction clearing module: the system comprises a data input module, a data processing module, a power module management module and a power module management module, wherein the data input module is used for inputting and processing declaration data, carrying out energy block power transaction clearing, and calculating to obtain settlement prices of different partitions and different time periods and winning loads of different market main bodies, different time periods and different energy blocks;
(4) The data output module is used for: and the settlement price of different partitions and different time periods, and the winning load and settlement cost of different market bodies, different time periods and different energy blocks are output according to the calculation result of the transaction clearing module.
3. The method for trading and clearing energy block power based on regional power price according to claim 2, wherein the method comprises the following steps: the parameter configuration module comprises a basic parameter configuration module, a market main body configuration module and an energy block configuration module;
① Basic parameter configuration: the system comprises a power system network topology structure, network partitions and the number thereof, connecting lines and the number thereof between the network partitions, technical parameters of the network partitions and the connecting lines, and load transfer factors between the network partitions and the connecting lines, wherein the power system network topology structure is used for configuring various basic parameters related to power transaction and clearing;
② Market subject configuration: various parameters for configuring market bodies involved in power transactions, including the type of generation of the genset, the region in which it is located, installed capacity, maximum and minimum technical output, ramp rate, typical generation profile, the voltage class, the partition where the power consumer is located, the typical power consumption curve, the energy storage, the installed capacity of the virtual power plant and the response rate;
③ Energy block configuration: the method is used for configuring various parameters of the energy block, including the upper limit and the lower limit of declaration load and declaration price of conventional hours, conventional blocks and flexible hours, and the maximum number of markable time periods which can be declared by the flexible hours.
4. The method for trading and clearing energy block power based on regional power price according to claim 1, wherein the method comprises the following steps: the specific steps of the step 2 include:
(1) Calculating a winning bid permutation and combination of a conventional block and flexible hours; the declaration number of the conventional blocks is x, and the number of the bid-winning permutation and combination of the conventional blocks is 2 x; the number of declarations in the flexible hour is y, the number of winning bid time periods in the mth flexible hour is z m, and the number of winning bid permutation and combination in the flexible hour is The number of the bid-winning permutation and combination of the conventional block and the flexible hour is
(2) Traversing and cycling the bid-winning arrangement combination of each 1 conventional block and flexible hour, taking the bid-winning identification of the conventional block and flexible hour as a fixed variable, solving the bid-winning quantity of the conventional hour according to the principle of 'high-low matching and step queuing', and recording the corresponding objective function value;
(3) And comparing the objective function values of the conventional block, all the bid-winning permutation and combination in the flexible hour, wherein the objective function value is the minimum conventional block, the bid-winning permutation and combination in the flexible hour and the bid-winning load in the conventional hour, and obtaining the clear result of the power transaction of the energy block.
5. The method for trading and clearing energy block power based on regional power price according to claim 1, wherein the method comprises the following steps: the specific steps of the step 3 include:
(1) Solving an energy block power transaction clearing model to obtain the standard-winning electric quantity of a conventional block and flexible hours;
(2) Taking the bid amount of the conventional block and the bid amount of the flexible hour as a fixed variable, taking the bid mark of the conventional hour as an optimization variable, and solving the energy block power transaction clear model again without considering the bid constraint of the flexible hour to obtain the Lagrange multiplier of the bid amount of the conventional hour, the power balance constraint and the tie line power flow constraint;
(3) Calculating settlement prices of different partitions and different time periods, wherein the calculation formula is as follows:
Wherein, Settlement price for time period t partition i, # t,/>Lagrangian multipliers constrained for the power balance constraint of period t and the upper and lower limits of tie flow.
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| CN113077284A (en) * | 2021-04-02 | 2021-07-06 | 国网福建省电力有限公司 | Clearing method of improved block trading market considering complex order types |
| CN112990983A (en) * | 2021-04-15 | 2021-06-18 | 国网天津市电力公司 | Electric power spot market energy block identification method |
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