Investment benefit-based power distribution network energy storage system capacity planning method
A technology for energy storage system and capacity planning, which is applied in the field of energy storage system capacity planning and analysis, and can solve problems such as not considering energy storage as a benefit for the power grid, not proceeding from the actual situation, and having little practical guidance significance
Pending Publication Date: 2020-02-25
万克能源科技有限公司
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Problems solved by technology
Existing planning methods do not proceed from the actual situation. Most of the construction costs only consider equipment purchase costs and maintenance costs, and do not consider the benefits brought by energy storage to the power grid. The practical guidance is not strong; In the service life of the battery, as the main equipment of the energy storage system, its electrochemical characteristics determine that it is greatly affected by the health of the electrochemical life in use. Therefore, the service time range of the battery should also be considered in the energy storage planning In order to obtain an energy storage system planning method with practical construction guiding significance
Method used
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Embodiment Construction
[0040] The object of the present invention is achieved through the following technical solutions: a method for capacity planning of distribution network energy storage system based on investment benefit, the method includes the following steps:
[0041] Step 1: Collect distribution network information to determine the distribution network topology and load capacity, and create a mathematical model for distribution network energy storage planning, where the mathematical model for distribution network energy storage planning is as follows:
[0042] maxC=C s +C loss -C ess -C ess，om (1)
[0043] In the formula, C s is the low storage and high release annual income value of the energy storage system, C loss The annual income value of saving electric energy loss for the energy storage system, C ess is the annual investment cost of the energy storage system, C ess，om is the annual operation and maintenance cost value of the energy storage system, and their calculation method...
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The invention provides an investment benefit-based power distribution network energy storage system capacity planning method, which comprises the following steps of acquiring information of a power distribution network to determine a topological structure and load capacity of the power distribution network, and creating a mathematical model of power distribution network energy storage planning; optimizing the energy storage planning model of the power distribution network by adopting a particle swarm algorithm, and initializing a plurality of parameters of particles; for each particle, judgingwhether the particle meets the power flow constraint and the node voltage constraint of the power distribution network or not, if so, calculating the fitness value of the particle, and initializing alocal optimal value and all optimal values; updating the speed and position of the particle according to the position and speed updating formula of the particle swarm algorithm; and re-judging whether the updated particles meet set power flow constraints and node voltage constraints or not, if so, calculating the value of the target function of the current planning scheme, and updating the localoptimal value and all optimal values.
Description
technical field [0001] The invention relates to a distribution network energy storage planning method considering investment decision-making, and belongs to the field of energy storage system capacity planning and analysis. Background technique [0002] In recent years, the rapid development of energy storage technology has introduced a new way of thinking for the operation of distribution networks, that is, through the construction of energy storage systems, discharging at peak times and charging at low valleys can reduce load fluctuations and obtain economic benefits. Purpose. [0003] For power grid users, the construction of an energy storage system is a large project, and it is necessary to make energy storage investment decisions and choose a planning method with practical significance. Existing planning methods do not proceed from the actual situation. Most of the construction costs only consider equipment purchase costs and maintenance costs, and do not consider the...
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IPC IPC(8): G06Q10/04G06Q50/04G06N3/00
CPCG06Q10/04G06Q50/04G06N3/006Y02P90/30
Inventor 董树锋董远云张良一章天晗
Owner 万克能源科技有限公司