A hybrid energy storage system and control method based on dual-objective cooperative control
A hybrid energy storage system and collaborative control technology, which is applied in the direction of load balancing, transportation and packaging, and parallel operation of DC power supplies in the DC network, to achieve the effect of improving comprehensive economy
Active Publication Date: 2022-07-08
ZHEJIANG ZHONGXIN POWER ENG CONSTR CO LTD +1
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In addition, at this stage, when considering the life loss caused by the service provided by the hybrid energy storage system, its responsiveness to power has not been considered comprehensively
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[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0026] This embodiment is implemented through the following technical solutions, a hybrid energy storage system based on dual-objective collaborative control, the operation framework of which includes a power response module, a power distribution module, and a service revenue calculation module.
[0027] A control method for a hybrid energy storage system based on dual-objective cooperative control includes the use of a battery capacity and a battery SOC at time T by a power response module to determine the maximum power response capability of the hybrid energy storage system at time T. The power distribution module is an active hybrid energy storage system, which independently controls the supercapacitor and the battery through the power converter. The service benefit calculation module evaluates the economic benefit Q and the battery life decay los...
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The invention relates to a hybrid energy storage system power control technology, in particular to a hybrid energy storage system and a control method based on dual-objective coordinated control. The power response module uses battery capacity and T Moment battery SOC to determine hybrid energy storage system T The maximum power response capability at the moment, two proportional coefficients are introduced in the PI control that controls the output power of the battery C 1 and C 2 Used to balance the effects of lifetime decay and service scoring. The power distribution module independently controls the super capacitor and the battery through the power converter, and the power responds to the service signal received by the module s Distributed to batteries and supercapacitors through the power distribution module. Service Benefit Calculation Module for Evaluation T Economic benefits of always-on service Q Lost cost with battery life decay C loss The relationship between. It is realized that the hybrid energy storage system can reduce the life loss by setting a reasonable proportional coefficient, and ensure that the system SOC is in a reasonable range to obtain low life loss.
Description
technical field [0001] The invention belongs to the technical field of hybrid energy storage system power control, and in particular relates to a hybrid energy storage system and a control method based on dual-objective coordinated control. Background technique [0002] With the development of integrated energy systems, the optimal configuration of energy storage systems in the power ancillary services market is of great value. The traditional single-battery energy storage system has limited flexibility, and frequent charging and discharging exacerbate the attenuation of the battery, resulting in a decline in system revenue. In recent years, hybrid energy storage systems have been widely used, which include both large-capacity, low-life energy storage and power storage with fast response characteristics and long life, providing the possibility for energy storage to flexibly participate in electric auxiliary services. . [0003] At present, there have been related researche...
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IPC IPC(8): H02J7/34H02J1/10H02J1/14
CPCH02J7/345H02J1/10H02J1/106H02J1/14
Inventor 金仁云邱海锋范华翁利国余彬陈杰
Owner ZHEJIANG ZHONGXIN POWER ENG CONSTR CO LTD