CN114463132A - Method and system for energy storage to participate in electric power spot market transaction - Google Patents

Method and system for energy storage to participate in electric power spot market transaction Download PDF

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CN114463132A
CN114463132A CN202210125632.5A CN202210125632A CN114463132A CN 114463132 A CN114463132 A CN 114463132A CN 202210125632 A CN202210125632 A CN 202210125632A CN 114463132 A CN114463132 A CN 114463132A
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章枫
邓晖
陆承宇
华文
房乐
周子青
马骏超
彭琰
董炜
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Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd
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Abstract

The invention discloses a method and a system for energy storage to participate in electric power spot market trading. The energy storage system has strong time coupling during operation, the operation cost is complex to change, and the difference of market mechanisms can generate large influence on the operation characteristics and benefits of energy storage. The technical scheme adopted by the invention is as follows: acquiring electric energy market and frequency modulation market declaration parameters of an energy storage power station in an electric power spot market; according to the declared parameters, carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform; and calculating the income and expenditure of the electric energy of the energy storage power station and the marketized auxiliary service cost according to the actual operation and measurement data of the real-time market. The method is simple to implement, strong in operability and capable of being widely applied to actual energy storage participating in the electric power spot market, reduces the operation pressure of the energy storage power station in the electric power market and improves the operation reliability of the energy storage power station in the electric power market.

Description

Method and system for energy storage to participate in electric power spot market transaction
Technical Field
The invention belongs to the field of electric power spot market, and relates to a method and a system for energy storage to participate in electric power spot market transaction.
Background
The stored energy and the electric power spot market are mainly benefited in two ways, namely, the stored energy and the electric power spot market are participated in, and the profit is obtained by virtue of charge and discharge price difference; and secondly, participating in the frequency modulation auxiliary service market to obtain frequency modulation call so as to gain profit. However, the energy storage system has strong time coupling during operation, the operation cost is complex to change, and the difference of market mechanisms can generate large influence on the operation characteristics and benefits of energy storage. At present, the electric power spot market in China is still in the initial stage of construction, and a relevant mechanism aiming at independent energy storage participation is not established yet. The related energy storage declaration information, calling and settlement modes are not clear, the peak-to-valley price difference of the existing electric power market in China is not large at present, and the cost of energy storage participation in the electric energy market is difficult to recover.
Therefore, the research of the stored energy participating in the electric power spot market transaction is developed, the operation pressure of the energy storage power station in the electric power market can be effectively solved, and the operation reliability of the energy storage power station in the electric power market is improved.
Disclosure of Invention
The invention aims to provide a method and a system for participating in electric power spot market trading by energy storage, which are used for acquiring electric energy market and frequency modulation market declaration parameters of an energy storage power station in an electric power spot market through market declaration; according to the declared parameters, carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform; the electric energy income and expenditure expense, the marketization auxiliary service expense of energy storage power station are calculated according to real-time market actual operation measurement data to the wide application participates in electric power spot market in actual energy storage, reduces the operating pressure of energy storage power station in the electric power market, promotes the operational reliability of energy storage power station in the electric power market.
Therefore, the invention adopts a technical scheme as follows: a method of energy storage participation in power spot market transactions, comprising:
step 1, acquiring declared parameters of an electric energy market and a frequency modulation market of an energy storage power station in an electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; reporting that the capacity and power of an energy storage power station (100-k)% need to participate in an electric energy market, and reserving the capacity and power of k% to participate in a frequency modulation market in a frequency modulation reporting mode;
step 2, carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform according to the declared parameters;
and 3, calculating the electric energy income and expenditure cost of the energy storage power station and the marketized auxiliary service cost according to the real-time market actual operation metering data.
Further, in step 1, the self-planned output force curve is a full day 96-period curve every 15 minutes on a day of birth.
Further, in step 2, the electric energy market and the frequency modulation market are calculated on the electric power spot market clearing platform according to the declared parameters, specifically according to the following steps:
step 201: electric energy market clearing calculation
The energy storage power station is a fixed output unit, is used as a boundary condition for clearing the market in the day ahead, does not participate in market pricing, does not compensate cost, and releases the unit combination and the output curve as the prior information of the market in the day ahead;
step 202: the frequency modulation market clearing calculation comprises the following steps:
comprehensively considering the frequency modulation market demand, declaration data of a frequency modulation service provider and comprehensive frequency modulation performance indexes, and adjusting quoted prices according to capacity quoted by a frequency modulation quotation unit, frequency modulation capacity and mileage quotation by a technical support system according to historical frequency modulation performance normalization indexes of each unit to obtain adjusted frequency modulation mileage cost, frequency modulation capacity cost and adjusted opportunity cost; the technical support system refers to application software supporting the operation of the electric power market;
sorting the frequency modulation combination sorting prices obtained by adding the adjusted capacity quotation, the adjusted opportunity cost and the adjusted mileage quotation multiplied by the mileage capacity ratio of each energy storage power station from low to high;
sequentially clearing according to the frequency modulation sequencing price from low to high until the sum of the capacities of the AGC units which win the bid meets the frequency modulation requirement issued by the power dispatching mechanism;
when the ordering prices of the AGC units are the same, the AGC units with high capacity are preferentially selected;
the frequency modulation sorting price of the last winning AGC unit is the unified clearing price of the frequency modulation market;
and sequencing the adjusted mileage quotations of the winning machine set to obtain the frequency modulation mileage clearing price, and calculating the frequency modulation capacity clearing price which is the frequency modulation clearing price-the frequency modulation mileage clearing price multiplied by the mileage capacity ratio.
Further, in step 3, the income and expense of the electric energy of the energy storage power station and the marketized auxiliary service cost are calculated according to the real-time market actual operation metering data, specifically according to the following steps:
step 301: calculating the electric energy income charge
The electric energy income cost is settled by the electricity price of the node at the power generation side according to the principles of day-ahead reference, real-time difference and contract price difference:
Figure BDA0003500380590000021
wherein R isMarket placeFor market model electric energy, RDay aheadFor the day-ahead market, electric energy and electricity fee, RReal timeFor real-time market differential electricity charges, RContract productFor contract spread of electricity charges, PDay aheadFor the coming market, PReal timeClearing prices for real-time market, PContract productTo contract price, QDay aheadFor the market to produce clear electricity quantity, QReal timeFor real-time marketing of clear electricity, QContract productThe contract electric quantity is obtained;
step 302: calculating the expenditure of electric energy
The electric energy expenditure is settled by the settlement of the electricity price at the user side according to the principles of day-ahead standard, real-time difference and contract price difference:
Figure BDA0003500380590000031
wherein R'Market placeIs market mode electric energy fee, R'Day aheadIs the electric energy fee of the day-ahead market, R'Real timeIs real-time market differential electric charge, R'Contract productIs contract spread electric charge, P'Day aheadTo bill the electricity price, P ', for the day-ahead market user side'Real-timeAccounting for real-time market user side electricity price, P'Contract productAccounting for contract market user side electricity price, Q'Day aheadIs the amount of clear electricity, Q'Real timeFor real-time market-out clear electricity quantity, Q'Contract productThe contract electric quantity is obtained;
step 303: calculating marketized ancillary service costs
Frequency modulation capacity charge S for energy storage power station participating in frequency modulation marketbcAnd the mileage cost S of frequency modulationbmThe calculation formulas are respectively as follows:
Figure BDA0003500380590000032
Figure BDA0003500380590000033
wherein n is the total number of trading cycles of the spot market in the settlement period, Qbc,iFor the winning capacity, Q, of the energy storage station in the ith transaction periodbm,iThe actual frequency modulation mileage of the energy storage power station in the ith transaction period is obtained; pibc,iFor the modulation of the ith transaction periodFrequency capacity clearing price, pibm,iSettling the price for the frequency-modulated mileage of the ith transaction period; kb,iAnd the average value of the comprehensive frequency modulation performance indexes of the energy storage power station in the ith transaction period is obtained.
The other technical scheme adopted by the invention is as follows: a system for energy storage participation in power spot market transactions, comprising:
the trading parameter acquisition module is used for acquiring declared parameters of an electric energy market and a frequency modulation market of the energy storage power station in the electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; reporting that the capacity and power of an energy storage power station (100-k)% need to participate in an electric energy market, and reserving the capacity and power of k% to participate in a frequency modulation market in a frequency modulation reporting mode;
the electric energy market and frequency modulation market clearing module is used for carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform according to the declared parameters;
and the settlement module is used for calculating the electric energy income and expenditure cost of the energy storage power station and the marketized auxiliary service cost according to the real-time market actual operation metering data.
The construction conditions of the existing electric power spot market and a technical support system are fully considered, and electric energy market and frequency modulation market declaration parameters of the energy storage power station in the electric power spot market are obtained through market declaration; according to the declared parameters, carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform; and calculating the income and expenditure of the electric energy of the energy storage power station and the marketized auxiliary service cost according to the actual operation and measurement data of the real-time market. Compared with the prior art, the method is simple to implement, strong in operability, capable of being widely applied to actual energy storage participating in the electric power spot market, capable of effectively solving the operation pressure of the energy storage power station in the electric power market, and capable of improving the operation reliability of the energy storage power station in the electric power market.
Drawings
FIG. 1 is a schematic general flow diagram of the process of the present invention;
fig. 2 is a block diagram of the system of the present invention.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings and the detailed description.
Example 1
The embodiment is a method for participating in electric power spot market trading by energy storage, a general flow diagram is given in fig. 1, and specific steps of the invention are explained in detail below.
(1) Acquiring declared parameters of an electric energy market and a frequency modulation market of an energy storage power station in an electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; reporting that the capacity and power of an energy storage power station (100-k)% need to participate in an electric energy market, and reserving the capacity and power of k% to participate in a frequency modulation market in a frequency modulation reporting mode;
and acquiring electric energy market and frequency modulation market declaration parameters of the energy storage power station in the electric power spot market by adopting Zhejiang electric power spot market technical support system software. The electric energy market declaration parameter is a total day 96 time interval self-planning output curve of the energy storage power station declaration, wherein the total day 96 time interval is 15 minutes every other day. Taking an example that an energy storage power station C with a certain capacity of 100MWh and a rated charge-discharge power of 50MW participates in the power spot market, the self-planned output curve is as follows:
Figure BDA0003500380590000041
Figure BDA0003500380590000051
the energy storage power station reserves 80% (k is 20) of capacity and power to participate in the electric energy market, and reserves 20% of capacity and power to participate in the frequency modulation market in a frequency modulation declaration mode. The frequency modulation declaration parameters of the energy storage power station are as follows: the frequency modulation capacity is 10MW, the price of the frequency modulation capacity is 2.9 yuan/MWh, and the price of the frequency modulation mileage is 0.85 yuan/MW.
(2) Electric energy market and frequency modulation market clearing calculation on electric power spot market clearing platform according to declared parameters
The energy storage power station is a fixed output unit, is used as a boundary condition for the future market clearing, does not participate in market pricing, does not compensate cost, and is used for releasing the prior information of the future market by using unit combination and an output curve.
Comprehensively considering the frequency modulation market demand, declaration data of a frequency modulation service provider, comprehensive frequency modulation performance indexes and the like, and according to the capacity quotation, the frequency modulation capacity and the mileage quotation declared by the frequency modulation quotation unit, the technical support system adjusts the quotation according to the historical frequency modulation performance normalization indexes of each unit to obtain the adjusted frequency modulation mileage cost, the adjusted frequency modulation capacity cost and the adjusted opportunity cost;
sorting the frequency modulation combination sorting prices obtained by the sum calculation of the adjustment capacity quotation, the adjustment opportunity cost and (the adjustment mileage quotation multiplied by the mileage capacity ratio) from low to high;
sequentially clearing according to the frequency modulation sequencing price from low to high until the sum of the capacities of the AGC units which win the bid meets the frequency modulation requirement issued by the power dispatching mechanism;
when the ordering prices of the AGC units are the same, the AGC units with high capacity are preferentially selected;
the frequency modulation sorting price of the last winning AGC unit is the unified clearing price of the frequency modulation market;
and sequencing the adjusted mileage quotations of the winning machine set to obtain the frequency-modulated mileage clearing price, and calculating the frequency-modulated capacity clearing price which is the frequency-modulated mileage clearing price-frequency-modulated mileage clearing price multiplied by the mileage capacity ratio.
Taking an example that an energy storage power station C with a certain capacity of 100MWh and a rated charge-discharge power of 50MW participates in a power spot market, 4 units in the system participate in a frequency modulation market, and a market main body needs to report capacity quotation, frequency modulation capacity and frequency modulation mileage in the frequency modulation market, wherein the regulated capacity quotation is a capacity quotation/frequency modulation performance index, and the regulated mileage quotation is a mileage quotation/frequency modulation performance index. The reporting parameters are:
Figure BDA0003500380590000052
and summing the adjusted capacity quotation, the adjusted opportunity cost and (the adjusted mileage quotation is multiplied by the mileage capacity ratio) to obtain a frequency modulation combination sequencing price, and sequencing the price from low to high, wherein the result is as follows:
Figure BDA0003500380590000061
and assuming that the frequency modulation requirement of the system is 25MW, the marginal frequency modulation unit is D.
Assuming that the actual opportunity cost of the bid winning unit which is cleared by the system does not change, the obtained frequency modulation pricing ranking price is as follows:
Figure BDA0003500380590000062
the frequency modulation price is sequenced to obtain that the frequency modulation clearing price is 32.75 yuan/MWh and the marginal unit is D. Sequencing the frequency modulation mileage quotations of the bid winning unit, wherein the result is as follows:
Figure BDA0003500380590000063
the adjustment of mileage price sequence shows that the frequency modulation mileage clearing price is 1.813 yuan/MW and the marginal unit is D. The frequency modulation capacity clearing price can be calculated to be the frequency modulation clearing price-the adjustment mileage clearing price multiplied by the mileage capacity ratio of 32.75-1.813 multiplied by 10-14.62 yuan/MWh.
(3) Calculating the income and expenditure of electric energy of the energy storage power station and the marketized auxiliary service cost according to the actual operation measurement data of the real-time market
The income cost of the electric energy is settled by the electricity price of the node at the power generation side, and the settlement is carried out according to the principles of day-ahead reference, real-time difference and contract price difference.
RMarket place＝RDay ahead+RReal time+RContract product
＝PDay ahead×QDay ahead+PReal time×(QReal time-QDay ahead)+(PContract product-PDay ahead)×QContract product
Wherein R isMarket placeFor market model electric energy, RDay aheadFor the day-ahead market, electric energy and electricity fee, RReal timeFor real-time market differential electricity charges, RContract productFor contract spread of electricity charges, PDay aheadFor the coming market, PReal timeClearing prices for real-time market, PContract productTo contract price, QDay aheadFor the market to produce clear electricity quantity, QReal timeFor real-time marketing of clear electricity, QContract productThe contract electric quantity is obtained.
Taking the energy storage power station C with a certain capacity of 100MWh and a rated charge-discharge power of 50MW participating in the power spot market as an example, the energy storage power station has no contract, so RContract product、PContract productAnd QContract productAre all zero; according to the clearing result of the technical support system, the day-ahead market clearing price and the real-time market clearing price of the power generation side node of the energy storage power station are respectively as follows:
Figure DA00035003805932009383
Figure BDA0003500380590000071
Figure BDA0003500380590000081
and calculating the income cost of the available electric energy into 66978.22 yuan according to a formula.
The electric energy expenditure is settled by the settlement of the electricity price at the user side according to the principles of day-ahead standard, real-time difference and contract price difference.
R′Market place＝R′Day ahead+R′Real time+R′Contract product
＝P′Day ahead×Q′Day ahead+P′Real time×(Q′Real time-Q′Day ahead)+(P′Contract product-P′Day ahead)×Q′Contract product
Wherein R'Market placeIs market mode electric energy electric fee, R'Day aheadIs the electric energy fee of the day-ahead market, R'Real timeIs real-time market differential electric charge, R'Contract productIs contract spread electric charge, P'Day aheadTo bill the electricity price, P ', for the day-ahead market user side'Real timeAccounting for real-time market user side electricity price, P'Contract productClearing electric price, Q 'for contract market user side'Day aheadIs the amount of clear electricity, Q'Real timeFor real-time market-out clear electricity quantity, Q'Contract productThe contract electric quantity is obtained.
Taking an example that an energy storage power station C with a certain capacity of 100MWh and a rated charge-discharge power of 50MW participates in the power spot market, according to the technical support system clearance s result, the day-ahead market clearance price and the real-time market clearance price of a user-side node of the energy storage power station are respectively as follows:
Figure BDA0003500380590000082
Figure BDA0003500380590000091
and calculating the expenditure cost of the available electric energy into 78935.79 yuan according to a formula.
The calculation formulas of the frequency modulation capacity cost and the frequency modulation mileage cost of the energy storage power station participating in the frequency modulation market are respectively as follows:
Figure BDA0003500380590000092
Figure BDA0003500380590000093
wherein n is the total number of trading cycles of the spot market in the settlement period, Qbc,iFor the energy storage power station to bid the frequency capacity, Q, in the ith transaction periodbm,iFor storing energyThe actual frequency modulation mileage of the power station in the ith transaction period; pibc,iClearing price for FM capacity of ith transaction period, pibm,iSettling the price for the frequency-modulated mileage of the ith transaction period; kb,iAnd the average value of the comprehensive frequency modulation performance indexes of the energy storage power station in the ith transaction period is obtained.
Taking the example that an energy storage power station C with a certain capacity of 100MWh and a rated charge-discharge power of 50MW participates in the power spot market, the frequency modulation market clearing result is as follows:
Figure BDA0003500380590000094
Figure BDA0003500380590000101
the frequency modulation mileage of the energy storage power station C per hour is 120 MW. According to the formula, the cost of the frequency modulation capacity of the energy storage power station is 69129 yuan, and the cost of the frequency modulation mileage is 73116 yuan.
The total income of the energy storage power station participating in the market is 66978.22-78935.79+69129+ 73116-130287.43 yuan.
Example 2
The embodiment provides a system for participating in electric power spot market trading by stored energy, which is composed of a trading parameter acquisition module, an electric energy market and frequency modulation market clearing module and a settlement module, as shown in fig. 2.
The trading parameter acquisition module is used for acquiring declared parameters of an electric energy market and a frequency modulation market of the energy storage power station in the electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; the requirement of reporting that 100-k% of capacity and power of an energy storage power station participate in an electric energy market is met, and k% of reserved capacity and power participate in a frequency modulation market in a frequency modulation reporting mode.
And the electric energy market and frequency modulation market clearing module is used for carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform according to the declared parameters.
And the settlement module is used for calculating the income and expenditure of the electric energy of the energy storage power station and the marketized auxiliary service cost according to the real-time market actual operation metering data.
The electric energy market and frequency modulation market clearing module is used for processing according to the following steps:
step 201: electric energy market clearing calculation
The energy storage power station is a fixed output unit, is used as a boundary condition for the future market clearing, does not participate in market pricing, does not compensate cost, and is used for releasing the prior information of the future market by using unit combination and an output curve.
Step 202: the frequency modulation market clearing calculation comprises the following steps:
comprehensively considering the frequency modulation market demand, declaration data of a frequency modulation service provider, comprehensive frequency modulation performance indexes and the like, and according to the capacity quotation, the frequency modulation capacity and the mileage quotation declared by the frequency modulation quotation unit, the technical support system adjusts the quotation according to the historical frequency modulation performance normalization indexes of each unit to obtain the adjusted frequency modulation mileage cost, the adjusted frequency modulation capacity cost and the adjusted opportunity cost;
sorting the sorted prices of the frequency modulation combination obtained by the sum calculation of the adjusted capacity quotation, the adjusted opportunity cost and (the adjusted mileage quotation multiplied by the mileage capacity ratio) from low to high;
sequentially clearing according to the frequency modulation sequencing prices from low to high until the sum of the capacities of the AGC units winning the bid meets the frequency modulation requirement issued by the power scheduling mechanism;
when the ordering prices of the AGC units are the same, the AGC units with high capacity are preferentially selected;
the frequency modulation sorting price of the last winning AGC unit is the unified clearing price of the frequency modulation market;
and sequencing the adjusted mileage quotations of the winning machine set to obtain the frequency modulation mileage clearing price, and calculating the frequency modulation capacity clearing price which is the frequency modulation clearing price-the frequency modulation mileage clearing price multiplied by the mileage capacity ratio.
The settlement module performs processing according to the following steps:
step 301: calculating the electric energy income charge
The income cost of the electric energy is settled by the electricity price of the node at the power generation side, and the settlement is carried out according to the principles of day-ahead reference, real-time difference and contract price difference.
RMarket place＝RDay ahead+RReal time+RContract product
＝PDay ahead×QDay ahead+PReal time×(QReal time-QDay ahead)+(PContract product-PDay ahead)×QContract product
Wherein R isMarket placeFor market model electric energy charge, RDay aheadFor the day-ahead market, electric energy and electricity fee, RReal timeFor real-time market differential electricity charges, RContract productFor contract spread of electricity charges, PDay aheadFor the coming market, PReal timeClearing prices for real-time market, PContract productTo contract price, QDay aheadFor the future market, QReal timeFor real-time marketing of clear electricity, QContract productThe contract electric quantity is obtained.
Step 302: calculating the expenditure of electric energy
The electric energy expenditure is settled by the settlement of the electricity price at the user side according to the principles of day-ahead standard, real-time difference and contract price difference.
R′Market place＝R′Day ahead+R′Real time+R′Contract product
＝P′Day ahead×Q′Day ahead+P′Real time×(Q′Real time-Q′Day ahead)+(P′Contract product-P′Day ahead)×Q′Contract product
Wherein R'Market placeIs market mode electric energy electric fee, R'Day aheadIs the electric energy fee of the day-ahead market, R'Real timeIs real-time market differential electric charge, R'Contract productIs contract spread electric charge, P'Day aheadTo bill the electricity price, P ', for the day-ahead market user side'Real-timeAccounting for real-time market user side electricity price, P'Contract productAccounting for contract market user side electricity price, Q'Day aheadIs the amount of clear electricity, Q'Real timeIn real timeMarket-specific electric quantity, Q'Contract productThe contract electric quantity is obtained.
Step 303: calculating marketized ancillary service costs
The calculation formulas of the frequency modulation capacity cost and the frequency modulation mileage cost of the energy storage power station participating in the frequency modulation market are respectively as follows:
Figure BDA0003500380590000111
Figure BDA0003500380590000112
wherein n is the total number of trading cycles of the spot market in the settlement period, Qbc,iFor the energy storage power station to bid the frequency capacity, Q, in the ith transaction periodbm,iThe actual frequency modulation mileage of the energy storage power station in the ith transaction period is obtained; pibc,iClearing price for FM capacity of ith transaction period, pibm,iSettling the price for the frequency-modulated mileage of the ith transaction period; k isb,iAnd the average value of the comprehensive frequency modulation performance indexes of the energy storage power station in the ith transaction period is obtained.

Claims (10)

1. A method of participating in power spot market transactions in stored energy comprising:
step 1, acquiring declared parameters of an electric energy market and a frequency modulation market of an energy storage power station in an electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; reporting that the capacity and power of an energy storage power station (100-k)% need to participate in an electric energy market, and reserving the capacity and power of k% to participate in a frequency modulation market in a frequency modulation reporting mode;
step 2, carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform according to the declared parameters;
and 3, calculating the electric energy income and expenditure cost of the energy storage power station and the marketized auxiliary service cost according to the real-time market actual operation metering data.
2. A method of storing energy for participation in an electricity spot market transaction as claimed in claim 1, wherein in step 1, said self-projected force profile is a 96-day time period profile at 15 minute intervals on a weekday.
3. The method for participating in the electric power spot market transaction according to claim 1, wherein in the step 2, the electric energy market clearing calculation comprises the following steps:
the energy storage power station is a fixed output unit, is used as a boundary condition for the future market clearing, does not participate in market pricing, does not compensate cost, and is used for releasing the prior information of the future market by using unit combination and an output curve.
4. The method for participating in electric power spot market trading according to claim 1, wherein in step 2, the fm market clearing calculation comprises the following steps:
comprehensively considering the frequency modulation market demand, declaration data of a frequency modulation service provider and comprehensive frequency modulation performance indexes, and adjusting quoted prices according to capacity quoted by a frequency modulation quotation unit, frequency modulation capacity and mileage quotation by a technical support system according to historical frequency modulation performance normalization indexes of each unit to obtain adjusted frequency modulation mileage cost, frequency modulation capacity cost and adjusted opportunity cost;
ordering the frequency modulation combination ordering price obtained by adding the adjustment capacity quotation, the adjustment opportunity cost and the adjustment mileage quotation multiplied by the mileage capacity ratio of each energy storage power station from low to high;
sequentially clearing according to the frequency modulation sequencing price from low to high until the sum of the capacities of the AGC units which win the bid meets the frequency modulation requirement issued by the power dispatching mechanism;
when the ordering prices of the AGC units are the same, the AGC units with high capacity are preferentially selected;
the last AGC unit frequency modulation sorting price which wins the bid is the unified clearing price of the frequency modulation market;
and sequencing the adjusted mileage quotations of the winning machine set to obtain the frequency modulation mileage clearing price, and calculating the frequency modulation capacity clearing price which is the frequency modulation clearing price-the frequency modulation mileage clearing price multiplied by the mileage capacity ratio.
5. The method for participating in electric power spot market transaction according to claim 1, wherein in step 3, the electric energy income and expenditure cost of the energy storage power station and the marketized auxiliary service cost are calculated according to the real-time market actual operation metering data, and the method comprises the following steps:
step 301: calculating the electric energy income charge
The electric energy income cost is settled by the electricity price of the node at the power generation side according to the principles of day-ahead reference, real-time difference and contract price difference:
Figure FDA0003500380580000021
wherein R isMarket placeFor market model electric energy charge, RDay aheadFor the day-ahead market, electric energy and electricity fee, RReal timeFor real-time market differential electricity charges, RContract productTo contract a spread of electric charges, PDay aheadFor the coming market, PReal timeClearing prices for real-time market, PContract productTo contract price, QDay aheadFor the future market, QReal timeFor real-time marketing of clear electricity, QContract productThe contract electric quantity is obtained;
step 302: calculating the expenditure of electric energy
The electric energy expenditure is settled by the settlement of the electricity price at the user side according to the principles of day-ahead standard, real-time difference and contract price difference:
Figure FDA0003500380580000022
wherein R'Market placeIs market mode electric energy electric fee, R'Day aheadIs the electric energy fee of the day-ahead market, R'Real timeIs real-time market differential electric charge, R'Contract productIs contract spread electric charge, P'Day aheadTo bill the electricity price, P ', for the day-ahead market user side'Real timeClearing electric price, P 'for real-time market user side'Contract productAccounting for contract market user side electricity price, Q'Day aheadIs the amount of clear electricity, Q'Real timeFor real-time market-out clear electricity quantity, Q'Contract productThe contract electric quantity is obtained;
step 303: calculating marketized auxiliary service costs
Frequency modulation capacity charge S for energy storage power station participating in frequency modulation marketbcAnd the mileage cost S of frequency modulationbmThe calculation formulas are respectively as follows:
Figure FDA0003500380580000023
Figure FDA0003500380580000024
wherein n is the total number of trading cycles of the spot market in the settlement period, Qbc,iFor the winning capacity, Q, of the energy storage station in the ith transaction periodbm,iThe actual frequency modulation mileage of the energy storage power station in the ith transaction period is obtained; pibc,iClearing price for FM capacity of ith transaction period, pibm,iSettling the price for the frequency-modulated mileage of the ith transaction period; kb,iAnd the average value of the comprehensive frequency modulation performance indexes of the energy storage power station in the ith transaction period is obtained.
6. A system for energy storage participation in electric power spot market transactions, comprising:
the trading parameter acquisition module is used for acquiring declared parameters of an electric energy market and a frequency modulation market of the energy storage power station in the electric power spot market, wherein the declared parameters comprise a self-planned output curve, a frequency modulation capacity price and a frequency modulation mileage price; reporting that the capacity and power of an energy storage power station (100-k)% need to participate in an electric energy market, and reserving the capacity and power of k% to participate in a frequency modulation market in a frequency modulation reporting mode;
the electric energy market and frequency modulation market clearing module is used for carrying out clearing calculation on the electric energy market and the frequency modulation market on the electric power spot market clearing platform according to the declared parameters;
and the settlement module is used for calculating the electric energy income and expenditure cost of the energy storage power station and the marketized auxiliary service cost according to the real-time market actual operation metering data.
7. The system of claim 6, wherein the trading parameter acquisition module is configured to obtain the self-planned output curve as a 96-day time period curve every 15 minutes on the day of departure.
8. The system of claim 6, wherein the electric energy market and fm market clearing module, the electric energy market clearing calculation comprises the steps of:
the energy storage power station is a fixed output unit, is used as a boundary condition for the future market clearing, does not participate in market pricing, does not compensate cost, and is used for releasing the prior information of the future market by using unit combination and an output curve.
9. The system of claim 6, wherein the electric energy market and fm market liquidation module is further configured to calculate fm market liquidation by:
comprehensively considering the frequency modulation market demand, declaration data of a frequency modulation service provider and comprehensive frequency modulation performance indexes, and adjusting quoted prices according to capacity quoted by a frequency modulation quotation unit, frequency modulation capacity and mileage quotation by a technical support system according to historical frequency modulation performance normalization indexes of each unit to obtain adjusted frequency modulation mileage cost, frequency modulation capacity cost and adjusted opportunity cost;
sorting the frequency modulation combination sorting prices obtained by adding the adjusted capacity quotation, the adjusted opportunity cost and the adjusted mileage quotation multiplied by the mileage capacity ratio of each energy storage power station from low to high;
sequentially clearing according to the frequency modulation sequencing price from low to high until the sum of the capacities of the AGC units which win the bid meets the frequency modulation requirement issued by the power dispatching mechanism;
when the ordering prices of the AGC units are the same, the AGC units with high capacity are preferentially selected;
the frequency modulation sorting price of the last winning AGC unit is the unified clearing price of the frequency modulation market;
and sequencing the adjusted mileage quotations of the winning machine set to obtain the frequency modulation mileage clearing price, and calculating the frequency modulation capacity clearing price which is the frequency modulation clearing price-the frequency modulation mileage clearing price multiplied by the mileage capacity ratio.
10. The system for participating in power spot market trading according to claim 6, wherein said accounting module processes according to the following steps:
step 301: calculating the electric energy income charge
The electric energy income cost is settled by the electricity price of the node at the power generation side according to the principles of day-ahead reference, real-time difference and contract price difference:
Figure FDA0003500380580000041
wherein R isMarket placeFor market model electric energy, RDay aheadFor the day-ahead market, electric energy and electricity fee, RReal timeFor real-time market differential electricity charges, RContract productFor contract spread of electricity charges, PDay aheadFor the coming market, PReal timeClearing prices for real-time market, PContract productTo contract price, QDay aheadFor the future market, QReal timeFor real-time marketing of clear electricity, QContract productThe contract electric quantity is obtained;
step 302: calculating the expenditure of electric energy
The electric energy expenditure is settled by the settlement of the electricity price at the user side according to the principles of day-ahead standard, real-time difference and contract price difference:
Figure FDA0003500380580000042
wherein R'Market placeIs market mode electric energy electric fee, R'Day aheadIs the electric energy fee of the day-ahead market, R'Real timeIs real-time market differential electric charge, R'Contract productIs contract spread electric charge, P'Day aheadTo bill the electricity price, P ', for the day-ahead market user side'Real timeAccounting for real-time market user side electricity price, P'Contract productClearing electric price, Q 'for contract market user side'Day aheadIs the amount of clear electricity, Q'Real timeIs the real-time market clear electricity quantity, Q'Contract productThe contract electric quantity is obtained;
step 303: calculating marketized ancillary service costs
Frequency modulation capacity charge S for energy storage power station participating in frequency modulation marketbcAnd the mileage cost S of frequency modulationbmThe calculation formulas are respectively as follows:
Figure FDA0003500380580000043
Figure FDA0003500380580000044
wherein n is the total number of trading cycles of the spot market in the settlement period, Qbc,iFor the winning capacity, Q, of the energy storage station in the ith transaction periodbm,iThe actual frequency modulation mileage of the energy storage power station in the ith transaction period is obtained; pibc,iClearing price for FM capacity of ith transaction period, pibm,iSettling the price for the frequency-modulated mileage of the ith transaction period; kb,iAnd the average value of the comprehensive frequency modulation performance index of the energy storage power station in the ith transaction period is obtained.
CN202210125632.5A 2022-02-10 2022-02-10 Method and system for energy storage to participate in electric power spot market transaction Pending CN114463132A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115659595A (en) * 2022-09-26 2023-01-31 中国华能集团清洁能源技术研究院有限公司 Energy storage control method and device of new energy station based on artificial intelligence

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115659595A (en) * 2022-09-26 2023-01-31 中国华能集团清洁能源技术研究院有限公司 Energy storage control method and device of new energy station based on artificial intelligence
CN115659595B (en) * 2022-09-26 2024-02-06 中国华能集团清洁能源技术研究院有限公司 Energy storage control method and device for new energy station based on artificial intelligence

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