A multifunctional energy storage system converter control strategy for photovoltaic storage power station
A technology for energy storage converters and energy storage systems, applied in photovoltaic power generation, AC network load balancing, reducing/preventing power oscillations, etc., can solve the problem of single function of energy storage systems and low utilization of energy storage system converters, etc. question
Active Publication Date: 2017-07-14
SHENZHEN XILIN ELECTRICAL TECH
View PDF4 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to overcome the shortcomings of the energy storage system in the existing optical storage power station that the function of the energy storage system is too single and the utilization rate of the energy storage system converter is low, and propose a multifunctional energy storage system converter control strategy applied to the optical storage power station
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0045] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0046] figure 1 It is a topological structure diagram of an optical-storage power station applying the present invention. The photovoltaic storage power station includes a three-phase power grid, a photovoltaic power generation system, a multifunctional energy storage system and loads. Photovoltaic power generation system consists of photovoltaic panels, DC / DC boost converter and photovoltaic inverter. The multifunctional energy storage system is composed of an energy storage battery and an energy storage converter. The loads mentioned include nonlinear loads, impact loads and ordinary loads. The connection of non-linear loads will bring harmonic pollution to the power grid, and the connection of impact loads will cause fluctuations in the voltage of the power grid and affect the power factor.
[0047] Based on the photovoltaic storage power station, th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a converter control strategy for a multifunctional energy storage system of a light storage power station. According to the converter control strategy, a stabilizing fluctuation algorithm is employed for smoothing of output power fluctuation of a photovoltaic power station to acquire an active current given value of the multifunctional energy storage system. On the condition that stabilizing the output power fluctuation of the photovoltaic power station is satisfied, residual capacity of the energy storage converter is taken into consideration, a compensation current given value is calculated according to national electric energy quality standards, and compensation for a harmonic wave current and a reactive power is carried out. The current synthesis control strategy is employed, the active current given value, a harmonic wave current given value and a reactive power current given value are synthesized, and control on the multifunctional energy storage system converter is realized through a current regulator.
Description
technical field [0001] The invention relates to a control method for a converter of a multifunctional energy storage system of an optical storage power station. Background technique [0002] The active power output by photovoltaic power plants will fluctuate greatly under the influence of natural conditions such as sunlight and temperature, which will bring great impact to the power grid. At present, many photovoltaic power plants have added energy storage systems to stabilize photovoltaic output fluctuations and improve their output characteristics. However, the current energy storage system in photovoltaic power plants has a single function and can only achieve the function of stabilizing photovoltaic output fluctuations, which greatly reduces the utilization rate of energy storage converters. [0003] The control method of the converter of the multifunctional energy storage system of the existing photovoltaic storage power station mainly combines the two functions of act...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/24
CPCH02J3/01H02J3/18H02J3/24H02J3/32Y02E10/56
Inventor 万同山
Owner SHENZHEN XILIN ELECTRICAL TECH