CN-122026368-A - Energy storage type virtual power plant time-sharing multiplexing operation method oriented to full-variety market

Abstract

The invention discloses a time-sharing multiplexing operation method of an energy storage type virtual power plant facing a full-variety market, and relates to the technical field of power markets, comprising the steps of analyzing participation modes of the power market of the energy storage type virtual power plant; the method comprises the steps of analyzing an operation mode and a settlement principle of the energy storage type virtual power plant participating in the full-variety electric power market, analyzing a multi-market connection and time-sharing multiplexing mechanism of the energy storage type virtual power plant participating in the full-variety electric power market, and designing a time-sharing multiplexing operation method of the energy storage type virtual power plant participating in the full-variety electric power market. The time-sharing multiplexing mechanism of the energy storage type virtual power plant participating in the full-variety power market is designed to realize the optimal utilization of resources, improve the profitability of the energy storage type virtual power plant and attract more social capital investment energy storage projects.

Inventors

• WANG FEI
• ZHU TIANBO
• ZHANG LIJIE
• ZHANG PENGYU
• LIU QINZHE
• DAI HAONAN
• WANG YUQING
• ZHEN ZHAO
• LI GANG
• WANG YUCUI
• WANG GANG
• Mi Dabin
• YANG JINCHENG
• SHI ZHENJIANG
• SUN RONGFU
• ZHANG ZHANG
• WANG JIANFENG
• ZHANG ZHIYONG
• WANG GE
• HE PENGFEI

Assignees

• 华北电力大学（保定）
• 河北建投能源投资股份有限公司
• 国网冀北电力有限公司
• 国网河北省电力有限公司经济技术研究院
• 国网新疆电力有限公司营销服务中心

Dates

Publication Date

20260512

Application Date

20251226

Claims (9)

1. 1. The time-sharing multiplexing operation method of the energy storage type virtual power plant for the whole variety market is characterized by comprising the following steps of: s1, analyzing participation modes of an electric power market of an energy storage type virtual power plant; S2, analyzing an operation mode and a settlement principle of the energy storage type virtual power plant participating in the full-variety power market; S3, analyzing a multi-market engagement and time-sharing multiplexing mechanism of the energy storage type virtual power plant participating in the full-variety market; And S4, designing a time-sharing multiplexing operation method of the energy storage type virtual power plant participating in the market of all varieties.
2. 2. The method according to claim 1, wherein the power market categories of the energy storage type virtual power plant in step S1 include an electric energy market, an auxiliary service market and a capacity market; in the aspect of the electric energy market, the energy storage type virtual power plant can participate in the medium-and-long-term market in a bilateral negotiation transaction and a centralized transaction mode, wherein the centralized transaction mode comprises centralized competitive price transaction, listing transaction, rolling match transaction and the like; the method includes the steps that the operation date adjustment capability is declared when the spot market is participated in a centralized transaction mode, a plurality of load/output sections of electricity utilization/power generation are declared, and meanwhile, a quotation curve is required to be monotonically and non-decreasing along with the increase of the load/output; the auxiliary service market needs to declare the auxiliary service capacity and price; The capacity market provides compensation based on grid-tied capacity, discharge capacity, etc.
3. 3. The method according to claim 1, wherein the operation mode in step S2 includes: participate in the electric energy market and realize economic benefit through peak-valley electricity price arbitrage; Peak regulation, frequency modulation, standby and climbing auxiliary services are provided, and benefits are obtained according to the principles of who provides and benefits and who distributes; and acquiring compensation cost of the capacity electricity price, and covering long-term fixed cost.
4. 4. The time division multiplexing operation method of the energy storage type virtual power plant according to claim 1, wherein the settlement principle in the step S2 is that the middle-long-term market in the electric energy market settles according to contract decomposed electric quantity and contract contracted price, and the spot market settles according to deviation electric quantity; the auxiliary service market adopts a settlement mode based on declared electricity prices, and the capacity market is mainly based on fixed capacity electricity price standards.
5. 5. The time division multiplexing operation method of energy storage type virtual power plant according to claim 1, wherein the market linking in step S3 is based on the priority principle of capacity allocation among different markets, that is, in combination with the existing typical market clearing process, based on medium-long term contract energy storage capacity in years/months/month, the energy storage type virtual power plant completes information declaration of standby market, daily spot market and frequency modulation market respectively before the day, then three markets are sequentially organized, cleared sequentially, and capacity is allocated sequentially, Wherein P max is the rated capacity of energy storage; the capacity of the winning bid reserve market, the spot market and the frequency modulation market in the period of the t day and the y day respectively; The time sharing in the time sharing multiplexing mechanism in the step S3 is to store energy to participate in different kinds of electric power markets according to different time periods in the same day; Multiplexing is the allocation of capacity for energy storage to a plurality of different markets or services within the same time period.
6. 6. The time-sharing multiplexing operation method of the energy storage type virtual power plant facing the full-variety market according to claim 1, wherein the time-sharing multiplexing operation method in the step S4 comprises a benefit function of the full-variety market and constraint conditions thereof.
7. 7. The time division multiplexing operation method of an energy storage type virtual power plant according to claim 6, wherein the benefit function in step S4 is: C T ＝C E +C AM +C C , Wherein, C T is the benefit of the participation of energy in the full variety market, C E is the benefit of the participation of energy in the electric energy market, C AM is the benefit of the participation of energy in the auxiliary service market, and C C is the benefit of the participation of energy in the capacity market.
8. 8. The time-sharing multiplexing operation method of the energy storage type virtual power plant facing the full-variety market according to claim 7, wherein the benefit function of the benefits of the energy storage participation in the electric energy market in the step S4 is as follows: C E ＝C long +C spot , Wherein, C long is the benefit of the medium-long term market and C spot is the benefit of the spot market; the medium-and-long-term contracts in the medium-and-long-term market are divided by hours, and each day has 24 hours, and the profit function is as follows: Wherein T is the number of days participating in the electric market; the charge and discharge electric quantity of the medium-long-term market is participated in for the h hour on the t day; Charging and discharging prices for participating in the medium-long-term market on the t-th day and h-th hour; The spot market settles according to the deviation electric quantity, namely the difference between the spot discharging clear electric quantity and the middle-long term contract decomposition electric quantity settles according to the spot electricity price, and the gain function of the energy storage participating in the spot market is as follows: In the formula, The charge and discharge electric quantity of the spot market is participated in the time period y of the t day; Charging and discharging prices for participating in the spot market in the y period of the t day; the revenue function of the energy storage participation auxiliary service market is as follows: C AM ＝C FM +C BM , Wherein, C FM is the profit of the frequency modulation market, and C BM is the profit of the standby market; the revenue function of the energy storage participation in the frequency modulation market is as follows, Wherein N t is the number of times of participation in the frequency modulation market on the t th day; calculating a value for the adjustment performance index on the t th day; Adjusting mileage for the ith transaction period on the t-th day; Declaring a price for the frequency modulation market of the ith time of the t day; energy storage participation in reserve markets the benefit function of (c) is as follows, In the formula, The winning bid spare capacity is the ith winning bid on the t th day; The price is declared for the spare market of the ith trading period on the T th day, and T t,i is the period duration of the ith time on the T th day; the revenue function of the energy storage participation capacity market is as follows: C C ＝P C ×R C , Wherein p C is a standard of electricity price of capacity, and R C is average available monthly capacity.
9. 9. The time-sharing multiplexing operation method of the energy storage type virtual power plant facing the full-variety market according to claim 6, wherein the constraint conditions in the step S4 comprise mutual exclusion of charge and discharge power of the spot market, mutual exclusion of charge and discharge identities of the medium-and-long-term market, mutual exclusion of participation varieties in auxiliary service market selection, and upper and lower limits of winning capacities of auxiliary energy storage services.

Description

Energy storage type virtual power plant time-sharing multiplexing operation method oriented to full-variety market Technical Field The invention relates to the technical field of electric power markets, in particular to a time-sharing multiplexing operation method of an energy storage type virtual power plant for a full-variety market. Background Under the large background of global energy transformation, new energy development in China is rapid in recent years. Along with the continuous increase of the proportion of new energy, the fluctuation and uncertainty of the power system are aggravated, and the virtual power plant is used as a novel operation main body to cooperatively participate in the power operation organization mode of the power system optimization and the power market transaction by aggregating various dispersed resources such as distributed power sources, adjustable loads, energy storage and the like, so that the resource optimization and low-carbon targets are realized, and the virtual power plant is becoming the key of the power system to operate flexibly and efficiently. Meanwhile, the energy storage of the energy storage type virtual power plant has great potential in balancing power supply and demand and improving system stability by means of quick response and bidirectional regulation capacity, so that the energy storage type virtual power plant technology serving as a key flexible resource is becoming an important component in a power system. Therefore, how to effectively integrate the energy storage type virtual power plant into the full-variety electric power market and design a reasonable operation mechanism becomes a key problem to be solved urgently. Disclosure of Invention The invention aims to comb operation mechanisms of the energy storage type virtual power plant participating in different types of electric power markets, and further designs a time-sharing multiplexing mechanism of the energy storage type virtual power plant participating in the whole variety of electric power markets so as to realize optimal utilization of resources, improve the profitability of the energy storage type virtual power plant and attract more social capital investment energy storage projects. The technical scheme includes that the time-sharing multiplexing operation method of the energy storage type virtual power plant facing the full-variety market comprises the steps of S1, S2, analyzing operation modes and settlement principles of the energy storage type virtual power plant participating in the full-variety power market, S3, analyzing multi-market connection and time-sharing multiplexing mechanisms of the energy storage type virtual power plant participating in the full-variety market, and S4, designing the time-sharing multiplexing operation method of the energy storage type virtual power plant participating in the full-variety market. The energy storage type virtual power plant has the beneficial effects that 1) the energy storage type virtual power plant is perfected to participate in the market mode. The method and the system deeply analyze the participation characteristics of the energy storage type virtual power plant in the full-variety electric power market, the operation mode and settlement principle and the multi-market engagement and time-sharing multiplexing mechanism, thereby providing reference for further improving the existing market mode, promoting the rapid development of the energy storage type virtual power plant market, and 2) improving the market competitiveness and economic benefit of energy storage resources. The invention designs a time-sharing multiplexing mechanism of the energy storage type virtual power plant participating in the full-variety power market, calculates and analyzes based on a certain power-saving market, and finally verifies the effectiveness of the time-sharing multiplexing mechanism for improving the profit mode and the income space of the energy storage type virtual power plant through simulation and economic analysis. Drawings FIG. 1 is a flow chart of the present invention; FIG. 2 is a market structure diagram of the energy storage participation full-variety electric power market proposed by the invention; FIG. 3 is a peak-to-valley time division diagram of the medium-to-long term market engaged in energy storage according to the present invention; FIG. 4 is a graph of daily peak maximum Gu Jiacha for energy storage participation in the medium-long term market proposed by the present invention; FIG. 5 is a diagram of the market trading situation of day 4 energy storage participating in the time-sharing multiplexing of the full-variety market; FIG. 6 is a diagram of market benefit of day 4 energy storage participating in time-sharing multiplexing of the full-variety market according to the invention; Fig. 7 is a diagram of capacity time-sharing multiplexing income situations of different spot price percentages and charge-discharge efficiency sce