Income calculation method and system for independent energy storage participating in auxiliary frequency modulation market transaction

Abstract

The invention discloses a revenue calculation method and system for independent energy storage participating in auxiliary frequency modulation market transaction. The method comprises the following steps: calculating a primary frequency modulation regulation performance index, calculating a clearing price of independent energy storage participating in a primary frequency modulation market based on mileage quotation, opportunity cost and declaration frequency modulation capacity of frequency modulation resources, and calculating the income of the independent energy storage participating in the primary frequency modulation market according to a clearing result; calculating an AGC frequency modulation performance index, calculating an AGC frequency modulation market clearing price based on the mileage quotation, the opportunity cost and the declaration frequency modulation capacity of the frequency modulation resources, and calculating independent energy storage participation AGC frequency modulation market income according to a clearing result; and based on the energy storage operation cost, the income of the independent energy storage participating in the primary frequency modulation market and the income of the independent energy storage participating in the AGC frequency modulation market, calculating the transaction income of the energy storage participating in the auxiliary frequency modulation market in the full life cycle. According to the invention, the energy storage full life cycle participates in the income calculation of the auxiliary frequency modulation service market.

Description

Technical Field

[0001] The present invention belongs to the field of auxiliary frequency regulation service market, and in particular relates to a method and system for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions. Background Art

[0002] The large-scale grid connection of new energy sources has increased the pressure on grid frequency regulation. The demand for grid frequency regulation is increasing day by day. Independent energy storage has the advantages of rapid action and accurate and flexible regulation. Compared with traditional units, it can achieve better frequency regulation effects. However, in order to achieve better frequency regulation effects for the grid and reduce the frequency regulation costs of the entire grid, it is also necessary to encourage independent energy storage to participate in auxiliary frequency regulation market transactions. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a method and system for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions, so as to meet the demand of encouraging independent energy storage to participate in grid frequency regulation.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] The present invention first discloses a method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions, the method comprising the following steps:

[0006] Step 1: Calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, primary frequency regulation action rate index and primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction; calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index; and calculate the income of the independent energy storage participating in the primary frequency regulation market based on the clearing result;

[0007] Step 2: Calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index, AGC control instruction response speed and regulation accuracy when participating in AGC frequency regulation after the independent energy storage participates in the AGC frequency regulation market transaction; calculate the AGC frequency regulation market clearing price based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resource and the primary frequency regulation performance index, and calculate the revenue of the independent energy storage participating in the AGC frequency regulation market according to the clearing result;

[0008] Step 3: Construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of the energy storage, and calculate the transaction income of the energy storage participating in the auxiliary frequency regulation market during its entire life cycle based on the energy storage operating cost, the income of the independent energy storage participating in the primary frequency regulation market, and the income of the independent energy storage participating in the AGC frequency regulation market.

[0009] The present invention further includes the following preferred embodiments:

[0010] The calculating of the primary frequency modulation performance index further includes:

[0011] Calculate the comprehensive performance index of primary frequency modulation:

[0012]

[0013] Indicates the primary frequency modulation response time indicator. Indicates the primary frequency modulation action rate index, Indicates the primary frequency modulation response accuracy;

[0014] Calculate the frequency regulation performance index once a day

[0015]

[0016] n represents the number of times one FM is participated in in one day;

[0017] Calculate the monthly regulation performance index of a frequency regulation :

[0018]

[0019] The calculation of the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index further includes:

[0020] Calculate the clearing sorting price according to the clearing price calculation model:

[0021]

[0022] The order of winning bids is determined from low to high according to the clearing ranking price of each market player until the total capacity demand is met; where Pr em,i represents the mileage quotation of frequency modulation resource i, Pr eo,i represents the opportunity cost of frequency modulation resource i, C i Indicates the declared frequency modulation capacity of frequency modulation resource i, It represents the frequency regulation performance index of frequency regulation resource i.

[0023] The opportunity cost Pr eo,i The loss caused by not being able to fully participate in the electric energy market due to participating in the frequency regulation market is the unit profit of participating in the electric energy market multiplied by the integral value of the lost power generation capacity over time:

[0024]

[0025] In the formula, Pr lm,i (t) represents the marginal electricity price of frequency regulation resource i in the electricity market at time t, Coi (Po i (t)) represents the operating cost of the frequency regulation resource i at the actual output level at time t, Po lm,i (t) represents the output level that resource i can bid for when participating in the electricity market, Po i (t) represents the actual output level of frequency regulation resource i.

[0026] The energy storage operation cost is constructed according to the energy storage initial investment cost and the operation and maintenance cost, further comprising:

[0027] Calculate the initial investment cost of energy storage Cs:

[0028] Cs=c po p po +c en e en

[0029] In the formula, c po represents the unit investment cost of energy storage power, p po Indicates the rated power of energy storage, c en represents the unit investment cost of energy storage capacity, e en Indicates the rated capacity of energy storage;

[0030] Calculate the energy storage operation and maintenance cost Co:

[0031] Co=μ k ×c year ×p po

[0032] In the formula, c year Represents the annual operating cost of energy storage per unit power, μ k Represents the calculation coefficient of energy storage throughout its life cycle.

[0033] The profit of independent energy storage participating in the primary frequency regulation market is:

[0034]

[0035] In the formula, represents the comprehensive performance index of frequency regulation of the energy storage operator in the jth month of the yth year, It represents the mileage of the energy storage operator participating in a frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in a frequency regulation in the jth month of the yth year;

[0036] The benefits of independent energy storage participating in the AGC frequency regulation market are:

[0037]

[0038] In the formula, represents the comprehensive performance index of AGC frequency regulation of the energy storage operator in the jth month of the yth year, represents the mileage of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year.

[0039] The calculation of the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage further includes:

[0040] Calculate the revenue from participating in auxiliary frequency regulation market transactions over the entire life cycle of energy storage:

[0041] G = max(Rp + Rs - Cs - Co).

[0042] The present invention also discloses a revenue calculation system for independent energy storage participating in auxiliary frequency regulation market transactions using the revenue calculation method for independent energy storage participating in auxiliary frequency regulation market transactions, comprising:

[0043] A primary frequency regulation market revenue calculation module is used to calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, the primary frequency regulation action rate index and the primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction, calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index, and calculate the revenue of the independent energy storage participating in the primary frequency regulation market according to the clearing result;

[0044] AGC frequency regulation market revenue module, used to calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index after the independent energy storage participates in the AGC frequency regulation market transaction, the AGC control instruction response speed and the regulation accuracy when participating in the AGC frequency regulation, and based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resource and the primary frequency regulation performance index calculation and the AGC frequency regulation market clearing price, calculate the revenue of the independent energy storage participating in the AGC frequency regulation market according to the clearing result;

[0045] The module for calculating the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage is used to construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of energy storage, and calculate the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage based on the energy storage operating cost, the revenue from the independent energy storage participating in the primary frequency regulation market, and the revenue from the independent energy storage participating in the AGC frequency regulation market.

[0046] Accordingly, the present application also discloses a terminal, including a processor and a storage medium;

[0047] The storage medium is used to store instructions;

[0048] The processor is used to operate according to the instructions to execute the steps of the profit calculation method for independent energy storage participating in auxiliary frequency regulation market transactions.

[0049] Correspondingly, the present application also discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the aforementioned method for calculating the revenue of independent energy storage participating in auxiliary frequency regulation market transactions.

[0050] The beneficial effects of the present invention are that, compared with the prior art, the present invention provides a method and system for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions, and a quotation strategy for participating in auxiliary frequency regulation market transactions taking into account the opportunity cost of independent energy storage; taking into account various frequency regulation resource characteristics, optimizing primary frequency regulation and secondary frequency regulation performance indicators; optimizing the frequency regulation auxiliary service market clearing mechanism, and constructing a revenue model for independent energy storage participating in the auxiliary frequency regulation market during its entire life cycle based on the primary frequency regulation and secondary frequency regulation revenue models, giving full play to the characteristics of new market entities such as energy storage that respond quickly, adjust accurately and flexibly, and overall optimize the power grid frequency regulation effect, reduce the frequency regulation cost of the entire network, obtain a revenue mechanism for independent energy storage participating in auxiliary frequency regulation market transactions, and ensure that energy storage can participate in market transactions smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of frequency modulation mileage in the present invention.

[0052] Figure 2 Schematic diagram of opportunity cost in the present invention.

[0053] Figure 3 It is a schematic diagram of the profit calculation process in the present invention. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0055] The embodiments described in this application are only some embodiments of the present invention, not all embodiments. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the protection scope of the present invention.

[0056] In view of the shortcomings of the prior art, the present invention proposes a method and system for calculating the benefits of independent energy storage participating in auxiliary frequency regulation market transactions, which fully considers the characteristics of new market entities such as energy storage, such as rapid response, accurate and flexible adjustment, optimizes the clearing mechanism of the frequency regulation auxiliary service market, optimizes the calculation model of the comprehensive performance indicators of primary frequency regulation and AGC frequency regulation, and realizes the benefit calculation of energy storage participating in the auxiliary frequency regulation service market throughout its life cycle.

[0057] See also Figure 3 The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions disclosed in the present invention comprises the following steps:

[0058] Step 1: Calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, primary frequency regulation action rate index and primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction; calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index; and calculate the income of the independent energy storage participating in the primary frequency regulation market based on the clearing result.

[0059] In a specific embodiment, step 1 further comprises:

[0060] Step 1.1: The trading agency determines the primary frequency regulation demand of the power grid in each time period and publishes the information.

[0061] Step 1.2: Based on the grid frequency regulation requirements and energy storage conditions published by the trading organization, the capacity and price declared by the energy storage operator are received. The declared price p battery It consists of mileage quotation and opportunity cost:

[0062] p battery =p mbattery +p obattery

[0063] In the formula, p mbattery represents the mileage quotation of the energy storage user, p obattery Represents opportunity cost.

[0064] Step 1.3: The trading institution determines the frequency regulation resource access qualification by calculating the frequency regulation performance index. If it is greater than 1, it has the qualification to enter the primary frequency regulation. The calculation is as follows:

[0065]

[0066] In the formula, it represents It represents the regulation performance index of the jth day of a frequency modulation, and the daily frequency modulation performance The calculation is as follows:

[0067]

[0068] In the formula, n represents the number of times of participating in frequency modulation in one day, It represents the comprehensive performance index of primary frequency modulation, and is calculated as follows:

[0069]

[0070] In the formula, It represents the comprehensive performance index of frequency modulation resource i participating in the jth frequency modulation.

[0071] It represents the primary frequency regulation response time indicator, which is used to measure the time from when the frequency exceeds the primary frequency regulation dead zone to when the frequency regulation resource output changes to 10% of the total primary frequency regulation amount. It is calculated as follows:

[0072]

[0073] In the formula, It represents the response time indicator of frequency modulation resource i participating in the jth frequency modulation to increase output. It represents the response time indicator of frequency regulation resource i participating in the jth frequency regulation to reduce output. It represents the lag time for frequency regulation resource i to participate in the jth frequency regulation to increase output, represents the delay time of frequency regulation resource i participating in the jth frequency regulation to reduce output, t N,d Indicates the standard lag time, the value is 1.

[0074] It represents the primary frequency regulation action rate index, which is used to measure the comprehensive power rate index of the process when the frequency exceeds the primary frequency regulation dead zone, the frequency regulation resource output reaches the primary frequency regulation target value, and when the frequency returns to the primary frequency regulation dead zone and the frequency regulation resource output recovers to the initial value.

[0075]

[0076] In the formula, It indicates the action rate indicator of frequency modulation resource i participating in the jth frequency modulation output reaching the target value. It represents the action rate index of frequency modulation resource i participating in the jth frequency modulation output recovery to the initial value, V N,i Indicates the standard response rate, V i,jup represents the actual response rate of frequency modulation resource i to reach the target value for the jth time, V i,jdown Indicates the actual response rate of the frequency modulation resource i when restoring the starting value for the jth time.

[0077] It indicates the primary frequency regulation response accuracy, which is used to measure the deviation between the actual output and the theoretical target value after the primary frequency regulation response of the frequency regulation resource reaches stability. The calculation is as follows:

[0078]

[0079] P i,j represents the stable actual output value of market entity i after the jth adjustment, P targetIt is the theoretical target value of output of market entity i for the jth adjustment.

[0080] Step 1.4, calculate the clearing ranking price, and determine the order of winning bids from low to high according to the clearing ranking prices of each market player until the total capacity demand is met. The clearing price calculation model is as follows:

[0081]

[0082] In the formula, Pr em,i represents the mileage quotation of frequency modulation resource i, Pr eo,i represents the opportunity cost of frequency modulation resource i, C i Indicates the declared frequency modulation capacity of frequency modulation resource i, It represents the frequency regulation performance index of frequency regulation resource i.

[0083] The opportunity cost Pr eo,i The losses caused by not being able to fully participate in the electric energy market due to participating in the frequency regulation market, such as Figure 1 The calculation method is to multiply the unit profit of participating in the electric energy market by the integral value of the lost power generation capacity over time:

[0084]

[0085] In the formula, Pr lm,i (t) represents the marginal electricity price of frequency regulation resource i in the electricity market at time t, Co i (Po i (t)) represents the operating cost of the frequency regulation resource i at the actual output level at time t, Po lm,i (t) represents the output level that resource i can bid for when participating in the electricity market, Po i (t) represents the actual output level of frequency regulation resource i. t0 is the start time of participating in the frequency regulation market, and t1 is the end time of participating in the frequency regulation market.

[0086] Considering the three periods before, during and after energy storage enters the frequency regulation stage, the opportunity cost can be divided into three parts, such as Figure 2 Before the energy storage enters the frequency regulation stage, the loss of revenue due to output adjustment is Pr ob ; During the frequency regulation phase, the revenue from patrolling due to the inability to provide energy supply due to the provision of frequency regulation services is Pr oh ; After the energy storage exits the frequency regulation period, the loss of revenue due to output adjustment Pr oa .

[0087] Calculate the model pr based on the clearing price i The operators who will ultimately participate in the market frequency regulation will have their profits calculated based on the prices declared by each operator after the frequency regulation is completed.

[0088] Step 1.5, after the clearing results are reviewed and released, execute the transaction results and calculate the frequency modulation benefits once.

[0089]

[0090] In the formula, represents the frequency modulation performance index of the frequency modulation resource i participating in the frequency modulation for the jth time, D i,j represents the frequency modulation mileage of frequency modulation resource i participating in a frequency modulation call for the jth time, p i Represents the declared price of frequency modulation resource i.

[0091] Step 2: Calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index, AGC control instruction response speed and regulation accuracy when participating in AGC frequency regulation after the independent energy storage participates in the AGC frequency regulation market transaction; calculate the AGC frequency regulation market clearing price based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index calculation; and calculate the revenue of the independent energy storage participating in the AGC frequency regulation market based on the clearing result.

[0092] In a specific embodiment, step 2 further comprises:

[0093] Step 2.1: The trading agency determines the AGC frequency regulation demand of the power grid in each time period and publishes the information.

[0094] Step 2.2: Based on the grid frequency regulation requirements and energy storage conditions published by the trading agency, the energy storage operator declares capacity and price, and declares price p battery It consists of mileage quotation and opportunity cost, as shown below:

[0095] p battery =p mbattery +p obattery

[0096] In the formula, p mbattery Indicates mileage quotation, p obattery Represents opportunity cost.

[0097] Step 2.3: Calculate the clearing ranking price, and determine the order of winning bids from low to high according to the clearing ranking prices of each market player until the total capacity demand is met. The clearing price calculation model is as follows:

[0098]

[0099] In the formula, Pr em,i represents the mileage quotation of frequency modulation resource i, Pr eo,i represents the opportunity cost of frequency modulation resource i, C i Indicates the declared frequency modulation capacity of frequency modulation resource i, It represents the AGC frequency modulation monthly frequency modulation performance index of frequency modulation resource i, which is calculated as follows:

[0100]

[0101] In the formula, It represents the comprehensive daily regulation performance index of AGC frequency modulation on the jth day, which is composed of the daily comprehensive daily regulation performance index of AGC frequency modulation Composition, calculated as follows:

[0102]

[0103] Where n represents the number of times the frequency modulation resource participates in AGC frequency modulation in one day. It represents the AGC frequency modulation performance index, which is calculated as follows:

[0104]

[0105] It indicates the speed at which the AGC unit responds to the AGC control instruction when the frequency modulation resource i participates in the AGC frequency modulation for the jth time. It is calculated as follows:

[0106]

[0107] Where V SAGC Indicates the standard adjustment speed in response to AGC control instructions. The actual adjustment speed of the AGC unit in response to the AGC control instruction when the frequency modulation resource i participates in the AGC frequency modulation for the jth time.

[0108] It represents the response time of frequency modulation resource i when it participates in AGC frequency modulation for the jth time, that is, the time delay of the AGC unit responding to the AGC control instruction:

[0109]

[0110] In the formula, It represents the response delay time of frequency modulation resource i participating in AGC frequency modulation for the jth time, t sdelay Indicates the standard delay time.

[0111] It indicates the regulation accuracy when frequency modulation resource i participates in AGC frequency modulation for the jth time, that is, the accuracy of the AGC unit in responding to the AGC control command.

[0112]

[0113] In the formula, represents the adjustment error when frequency modulation resource i participates in AGC frequency modulation for the jth time, E SAGC Indicates the allowable AGC command response accuracy error.

[0114] Step 2.4, after the clearing results are reviewed and released, execute the transaction results and calculate the AGC frequency modulation benefits.

[0115]

[0116] In the formula, represents the frequency modulation performance index of frequency modulation resource i participating in AGC frequency modulation for the jth time, D i,j represents the frequency modulation mileage of frequency modulation resource i participating in AGC frequency modulation call for the jth time, p i Represents the declared price of frequency modulation resource i.

[0117] Step 3: Construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of the energy storage, and calculate the transaction income of the energy storage participating in the auxiliary frequency regulation market during its entire life cycle based on the energy storage operating cost, the income of the independent energy storage participating in the primary frequency regulation market, and the income of the independent energy storage participating in the AGC frequency regulation market.

[0118] Step 3.1: Construct the energy storage operation cost, including the initial investment cost of energy storage and operation and maintenance cost. The initial investment cost of energy storage Cs is calculated as follows:

[0119] Cs=c po p po +c en e en

[0120] In the formula, c po represents the unit investment cost of energy storage power, p po Indicates the rated power of energy storage, c en represents the unit investment cost of energy storage capacity, e en Indicates the rated capacity of energy storage.

[0121] The energy storage operation and maintenance cost Co is calculated as follows:

[0122] Co=μ k ×c year ×p po

[0123] In the formula, c year Represents the annual operating cost of energy storage per unit power, μ k It represents the calculation coefficient of the energy storage life cycle, which is calculated as follows:

[0124]

[0125] In the formula, θ ir represents the inflation coefficient, θ dr represents the discount rate and N represents the operating life.

[0126] Step 3.2: Construct the revenue Rp of energy storage participating in frequency regulation throughout its life cycle:

[0127]

[0128] In the formula, represents the comprehensive performance index of frequency regulation of the energy storage operator in the jth month of the yth year, It represents the mileage of the energy storage operator participating in a frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in a frequency regulation in the jth month of the yth year.

[0129] Step 3.3: Construct the revenue Rs of energy storage participating in AGC frequency regulation throughout its life cycle, calculated as follows:

[0130]

[0131] In the formula, represents the comprehensive performance index of AGC frequency regulation of the energy storage operator in the jth month of the yth year, represents the mileage of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year.

[0132] Step 3.4: Take the maximum net benefit of participating in the auxiliary frequency regulation market over the entire life cycle of energy storage as the objective function, clarify the constraints, and solve the objective function. The comprehensive benefit model of energy storage participating in the frequency regulation market aims to maximize the net benefit of energy storage over the entire life cycle. Specific benefits include primary frequency regulation benefits and AGC frequency regulation benefits. Costs include initial investment costs and operation and maintenance costs.

[0133] The objective function G of the net benefit of energy storage throughout its life cycle is as follows:

[0134] G=max(Rp+Rs-Cs-Co)

[0135] In the formula, Rp represents the income of energy storage participating in primary frequency regulation throughout its life cycle, Rs represents the income of energy storage participating in AGC frequency regulation throughout its life cycle, Cs represents the initial investment cost of energy storage, and Co represents the operation and maintenance cost of energy storage.

[0136] The constraints of the comprehensive profit model for energy storage participating in the frequency regulation market include energy storage operation status constraints, primary frequency regulation demand constraints, AGC frequency regulation demand constraints, and line flow constraints.

[0137] Energy storage operation state constraints include state of charge fluctuation range constraints, capacity constraints, and charge and discharge power constraints.

[0138] Energy storage charge state fluctuation range constraints:

[0139] Smin ≤S(i)≤S max

[0140] S min With S max They represent the upper and lower limits of the energy storage charge state, respectively. S(i) represents the charge state of the energy storage at time i and needs to satisfy the continuity constraint:

[0141]

[0142] In the formula, p poch (i) represents the energy storage charging power, n ch represents the energy storage charging efficiency, p podi (i) represents the energy storage discharge power, n di represents the energy storage discharge efficiency, and Δt represents the time interval.

[0143] Energy storage capacity constraints:

[0144] e enmin ≤e en ≤e enmax

[0145] In the formula, e enmin With e enmax They respectively represent the minimum capacity and maximum capacity allowed in the energy storage operation state.

[0146] Energy storage charging and discharging power constraints:

[0147]

[0148] In the formula, p pochmax and p podimax They represent the maximum value of energy storage charging power and the maximum value of energy storage discharging power respectively.

[0149] The beneficial effects of the present invention are that, compared with the prior art, the present invention provides a method and system for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions, and a quotation strategy for participating in auxiliary frequency regulation market transactions taking into account the opportunity cost of independent energy storage; taking into account various frequency regulation resource characteristics, optimizing primary frequency regulation and secondary frequency regulation performance indicators; optimizing the frequency regulation auxiliary service market clearing mechanism, and constructing a revenue model for independent energy storage participating in the auxiliary frequency regulation market during its entire life cycle based on the primary frequency regulation and secondary frequency regulation revenue models, giving full play to the characteristics of new market entities such as energy storage that respond quickly, adjust accurately and flexibly, and overall optimize the power grid frequency regulation effect, reduce the frequency regulation cost of the entire network, obtain a revenue mechanism for independent energy storage participating in auxiliary frequency regulation market transactions, and ensure that energy storage can participate in market transactions smoothly.

[0150] The present invention may be a system, method and / or computer program product. The present invention also discloses a revenue calculation system for independent energy storage participating in auxiliary frequency regulation market transactions based on the revenue calculation method for independent energy storage participating in auxiliary frequency regulation market transactions, including:

[0151] A primary frequency regulation market revenue calculation module is used to calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, the primary frequency regulation action rate index and the primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction, calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index, and calculate the revenue of the independent energy storage participating in the primary frequency regulation market according to the clearing result;

[0152] AGC frequency regulation market revenue module, used to calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index after the independent energy storage participates in the AGC frequency regulation market transaction, the AGC control instruction response speed and the regulation accuracy when participating in the AGC frequency regulation, and based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resource and the primary frequency regulation performance index calculation and the AGC frequency regulation market clearing price, calculate the revenue of the independent energy storage participating in the AGC frequency regulation market according to the clearing result;

[0153] The module for calculating the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage is used to construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of energy storage, and calculate the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage based on the energy storage operating cost, the revenue from the independent energy storage participating in the primary frequency regulation market, and the revenue from the independent energy storage participating in the AGC frequency regulation market.

[0154] Based on the spirit of the present invention, those skilled in the art can easily think of a computer program product based on the aforementioned method for calculating the revenue of independent energy storage participating in auxiliary frequency regulation market transactions. The computer program product may include a computer-readable storage medium, which carries computer-readable program instructions for enabling a processor to implement various aspects of the present disclosure. That is, the present application also includes a terminal, including a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the aforementioned method for calculating the revenue of independent energy storage participating in auxiliary frequency regulation market transactions.

[0155] Computer readable storage medium can be a tangible device that can keep and store the instructions used by the instruction execution device. Computer readable storage medium can be, for example, - but not limited to - electrical storage device, magnetic storage device, optical storage device, electromagnetic storage device, semiconductor storage device or any suitable combination of the above. More specific examples (non-exhaustive list) of computer readable storage medium include: portable computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanical encoding device, for example, punch card or groove protrusion structure with instructions stored thereon and any suitable combination of the above. Computer readable storage medium used here is not interpreted as instantaneous signal itself, such as radio wave or other free propagating electromagnetic wave, electromagnetic wave propagated by waveguide or other transmission medium (for example, light pulse by optical fiber cable) or electrical signal transmitted by wire.

[0156] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0157] The computer program instructions for performing the operation of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages-such as Smalltalk, C++, etc., and conventional procedural programming languages-such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network-including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA) may be personalized by utilizing the state information of a computer-readable program instruction, and the electronic circuit may execute a computer-readable program instruction, thereby realizing various aspects of the present disclosure.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions, characterized in that: The following steps are involved: Step 1: Calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, primary frequency regulation action rate index and primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction; calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index; and calculate the income of the independent energy storage participating in the primary frequency regulation market based on the clearing result; Step 2: Calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index, AGC control instruction response speed and regulation accuracy when participating in AGC frequency regulation after the independent energy storage participates in the AGC frequency regulation market transaction; calculate the AGC frequency regulation market clearing price based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resource and the primary frequency regulation performance index, and calculate the revenue of the independent energy storage participating in the AGC frequency regulation market according to the clearing result; Step 3: Construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of the energy storage, and calculate the transaction income of the energy storage participating in the auxiliary frequency regulation market during its entire life cycle based on the energy storage operating cost, the income of the independent energy storage participating in the primary frequency regulation market, and the income of the independent energy storage participating in the AGC frequency regulation market.

2. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 1 is characterized in that: The calculating of the primary frequency modulation performance index further includes: Calculate the comprehensive performance index of primary frequency modulation: Indicates the primary frequency modulation response time indicator. Indicates the primary frequency modulation action rate index, Indicates the primary frequency modulation response accuracy; Calculate the frequency regulation performance index once a day n represents the number of times one FM is participated in in one day; Calculate the monthly regulation performance index of a frequency regulation 3. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 2 is characterized in that: The calculation of the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index further includes: Calculate the clearing sorting price according to the clearing price calculation model: The order of winning bids is determined from low to high according to the clearing ranking price of each market player until the total capacity demand is met; where Pr em,i represents the mileage quotation of frequency modulation resource i, Pr eo,i represents the opportunity cost of frequency modulation resource i, C i Indicates the declared frequency modulation capacity of frequency modulation resource i, It represents the frequency regulation performance index of frequency regulation resource i.

4. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 3 is characterized in that: The opportunity cost Pr eo,i The loss caused by not being able to fully participate in the electric energy market due to participating in the frequency regulation market is the unit profit of participating in the electric energy market multiplied by the integral value of the lost power generation capacity over time: In the formula, Pr lm,i (t) represents the marginal electricity price of frequency regulation resource i in the electricity market at time t, Co i (Po i (t)) represents the operating cost of the frequency regulation resource i at the actual output level at time t, Po lm,i (t) represents the output level that resource i can bid for when participating in the electricity market, Po i (t) represents the actual output level of frequency regulation resource i.

5. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 4 is characterized in that: The energy storage operation cost is constructed according to the energy storage initial investment cost and the operation and maintenance cost, further comprising: Calculate the initial investment cost of energy storage Cs: Cs=c po p po +c en e en In the formula, c po represents the unit investment cost of energy storage power, p po Indicates the rated power of energy storage, c en represents the unit investment cost of energy storage capacity, e en Indicates the rated capacity of energy storage; Calculate the energy storage operation and maintenance cost Co: What=μ k ×c year ×p po In the formula, c year Represents the annual operating cost of energy storage per unit power, μ k Represents the calculation coefficient of energy storage throughout its life cycle.

6. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 5 is characterized in that: The profit of independent energy storage participating in the primary frequency regulation market is: In the formula, represents the comprehensive performance index of frequency regulation of the energy storage operator in the jth month of the yth year, It represents the mileage of the energy storage operator participating in a frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in a frequency regulation in the jth month of the yth year; The benefits of independent energy storage participating in the AGC frequency regulation market are: In the formula, represents the comprehensive performance index of AGC frequency regulation of the energy storage operator in the jth month of the yth year, represents the mileage of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year, It represents the mileage electricity price of the energy storage operator participating in AGC frequency regulation in the jth month of the yth year.

7. The method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to claim 6 is characterized in that: The calculation of the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage further includes: Calculate the revenue from participating in auxiliary frequency regulation market transactions over the entire life cycle of energy storage: G = max(Rp + Rs - Cs - Co).

8. A revenue calculation system for independent energy storage participating in auxiliary frequency regulation market transactions, characterized in that: include: A primary frequency regulation market revenue calculation module is used to calculate the primary frequency regulation performance index based on the primary frequency regulation response time index, the primary frequency regulation action rate index and the primary frequency regulation response accuracy after the independent energy storage participates in the primary frequency regulation market transaction, calculate the clearing price of the independent energy storage participating in the primary frequency regulation market based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resources and the primary frequency regulation performance index, and calculate the revenue of the independent energy storage participating in the primary frequency regulation market according to the clearing result; AGC frequency regulation market revenue module, used to calculate the AGC frequency regulation performance index based on the AGC frequency regulation response time index after the independent energy storage participates in the AGC frequency regulation market transaction, the AGC control instruction response speed and the regulation accuracy when participating in the AGC frequency regulation, and based on the mileage quotation, opportunity cost and declared frequency regulation capacity of the frequency regulation resource and the primary frequency regulation performance index calculation and the AGC frequency regulation market clearing price, calculate the revenue of the independent energy storage participating in the AGC frequency regulation market according to the clearing result; The module for calculating the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage is used to construct the energy storage operating cost according to the initial investment cost and operation and maintenance cost of energy storage, and calculate the revenue from participating in auxiliary frequency regulation market transactions during the entire life cycle of energy storage based on the energy storage operating cost, the revenue from the independent energy storage participating in the primary frequency regulation market, and the revenue from the independent energy storage participating in the AGC frequency regulation market.

9. A terminal comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is used to operate according to the instruction to execute the steps of the method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions according to any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for calculating the income of independent energy storage participating in auxiliary frequency regulation market transactions as described in any one of claims 1 to 7 are implemented.

Images