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Power smoothing control method for optical storage system based on second-order cone programming

A second-order cone planning, power smoothing technology, applied to AC networks to reduce harmonics/ripples, harmonic reduction devices, etc.

Active Publication Date: 2014-10-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] Based on this, this paper proposes an optimal control strategy for smoothing PESS power output using cone programming theory, which can simultaneously realize the smooth output of PESS power and the optimal distribution of active power of each internal unit, making up for the traditional method that can only choose one of the two. defect

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  • Power smoothing control method for optical storage system based on second-order cone programming
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  • Power smoothing control method for optical storage system based on second-order cone programming

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[0031] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0032] figure 1 It is a flow chart of the power smoothing control method provided by the present invention. figure 1 Among them, the power smoothing control method of the optical storage system based on the second-order cone programming provided by the present invention includes:

[0033] Step 1: Read in data, including comprehensive economic indicators of each energy storage unit, power generation cost coefficient, environmental pollution indicators and primary energy waste indicators.

[0034] Step 2: Establish an optimization model, including establishing a comprehensive economic index model (comprehensive economic index, CEI), an objective function model, a power balance constraint model, and a power limit constr...

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Abstract

The invention discloses a light storage system power slide control method based on second order cone programming and belongs to the technical field of power system stability control. The method comprises the steps of reading data, namely the integrated economy index, the electricity generation cost factor, the environment pollution index and the one-time energy waste index of each energy storage unit; establishing optimized modules, namely an integrated economy index model, a target function model, a power balance restraining model and a power limit restraining model are established; respectively carrying out second order cone programming processing on the target function model, the power balance restraining model and the power limit restraining model; solving and optimizing the models with a second order cone programming solving method, computing electricity generation power of each electricity generation unit, and outputting power according to the computed electricity generation power by each electricity generation unit. According to the method, fluctuating of photovoltaic output power can be well restrained, and a power distribution strategy with the best economy is provided.

Description

technical field [0001] The invention belongs to the technical field of power system stability control, and in particular relates to a power smoothing control method for an optical storage system based on second-order cone programming. Background technique [0002] Photovoltaic power generation has increasingly become a new type of energy with the most development potential due to its advantages of rich resources, environmental protection and low carbon. However, photovoltaic power generation is characterized by randomness, intermittency, and volatility, making it difficult to guarantee smooth output of power. In this case, the Photovoltaic-Energy Storage System (PESS) can realize power smoothing by utilizing the compensation ability of the energy storage device for photovoltaic power generation, but how to realize the fast and economical optimization of PESS on the basis of ensuring power smooth Control is the key problem to be solved urgently at present. [0003] At prese...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 马静石建磊王桐王彤王增平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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