Method for optimizing energy storage capacity of wind-power-containing electric power system considering peak regulation requirements

A technology of energy storage capacity and power system, applied in wind power generation, system integration technology, information technology support system, etc., can solve problems such as unfavorable operation of power grid

Inactive Publication Date: 2020-10-20
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

However, in the power system containing wind power, due to the influence of natural wind energy, the wind power output fluctuates more violently than t

Method used

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  • Method for optimizing energy storage capacity of wind-power-containing electric power system considering peak regulation requirements
  • Method for optimizing energy storage capacity of wind-power-containing electric power system considering peak regulation requirements
  • Method for optimizing energy storage capacity of wind-power-containing electric power system considering peak regulation requirements

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specific Embodiment

[0199] 1. Basic data

[0200] Take the power structure and load characteristics of an actual power grid system in my country as an example. For hourly wind, load and net load values ​​on a typical day see figure 2 . The relevant unit parameters of the system units are shown in the table, the maximum load is 8950MW, and the installed capacity of wind power is 2000MW. Wind power penetration is 22%. According to relevant data in my country, the unit investment cost of a pumped storage power station is calculated at 4.5 million yuan / MW, the annual operation and maintenance cost is considered at 4%, the service life is 50 years, and the depreciation rate is 12%.

[0201] Table 1 Unit parameter table

[0202]

[0203] (1) The optimization results of energy storage capacity considering hour-level peak shaving demand.

[0204] For the planning scheme, the capacity of the pumped storage power station is set in steps of 100MW. According to the optimization model, the maximum b...

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Abstract

The invention discloses a method for optimizing the energy storage capacity of a wind-power-containing electric power system considering peak regulation requirements, which comprises the following steps: considering an optimization target of the energy storage capacity of the wind-power-containing electric power system of a scheduling plan, and establishing an energy storage capacity optimizationcost income model which comprises a target function and a constraint condition for realizing maximum net profit of the system at the lowest energy storage investment cost; and solving the energy storage capacity optimization cost income model by adopting an improved adaptive genetic algorithm to obtain the optimal capacity of the pumped storage power station, and optimizing the energy storage capacity of the wind-power-containing power system according to the optimal capacity of the pumped storage power station. According to the method, the peak regulation demand constraint is introduced intothe pumped storage water pumping/energy storage process, and the situation that the system peak regulation demand is increased due to wind power grid-connected power fluctuation in a system schedulingplan is avoided.

Description

technical field [0001] The invention relates to a method for optimizing the energy storage capacity of a power system, and more specifically, relates to a method for optimizing the energy storage capacity of a power system including wind power, taking into account the demand for peak regulation. Background technique [0002] At present, the power supply in the power system is dominated by thermal power units, which are slow to start and stop and costly, so it is the most economical to keep them in the running state. However, the load in the power grid is not constant, usually the load is large during the day and small at night. However, in the power system containing wind power, due to the influence of natural wind energy, the wind power output fluctuates more violently than the load, and often has the characteristics of "anti-peak regulation" similar to the load. Frequent start and stop due to changes in wind power and load. Pumped storage power plants are used to balance...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/28H02J3/46G06N3/12G06Q10/06G06Q50/06
CPCH02J3/0075H02J3/28H02J3/466G06N3/126G06Q10/06312G06Q10/06315G06Q50/06H02J2203/10H02J2203/20H02J2300/28H02J2310/60Y02E10/76Y02E40/70Y02E70/30Y04S10/50
Inventor 吴健杨波冯亮郑志杰崔灿綦陆杰刘蕊王耀雷王延朔张雯赵韧张博颐李昊
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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