Reactive power comprehensive control method, device and equipment for chain type energy storage device and medium
An energy storage device and comprehensive control technology, applied in reactive power adjustment/elimination/compensation, energy storage, circuit devices, etc., can solve problems such as inconvenient operation and inability to comprehensively control reactive power and current
Active Publication Date: 2022-05-27
SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
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Problems solved by technology
[0004]
However, the existing reactive power control methods cannot comprehensively control the reactive current, and the operation is inconvenient
Method used
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[0046] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.
[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.
[0048] In the description of the present application, "plurality" means at least two, such as two, three,...
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The invention relates to a reactive power comprehensive control method, device and equipment for a chain type energy storage device and a medium. The reactive power comprehensive control method for the chain type energy storage device comprises the following steps: acquiring an assessment-side alternating voltage, an assessment-side alternating current, a device-side alternating voltage, a device-side alternating current and a device control mode; determining an input value of a PI control loop according to the device control mode, the assessment side AC voltage, the assessment side AC current, the device side AC voltage and the device side AC current; if the transient voltage control is not started, determining a steady-state current amplitude limiting value of a PI control ring according to the reactive capacity and the rated voltage of the chain type energy storage device; pI control is carried out according to the input value of the PI control ring and the steady-state current amplitude limiting value, and steady-state reactive current is obtained. Different reactive power device control modes share a PI control ring and control parameters, and the stability and operability of reactive power control of the chain type energy storage device are improved.
Description
technical field [0001] The present application relates to the technical field of electric power system control, in particular to a method, device, equipment and medium for comprehensive reactive power control of chain-type energy storage devices. Background technique [0002] With the rapid development of wind and renewable energy, the uncertainty of wind and wind power generation has brought huge challenges to the real-time balance between power production and consumption, prompting the rapid development of energy storage demand in the direction of large-scale and large-capacity. The inconsistency of the battery cells makes the safety of the battery energy storage system drop sharply as the number of battery cells connected in series and parallel increases, which seriously restricts the improvement of the battery stack capacity. [0003] The H-bridge chain-type converter has the advantages of high efficiency, reliability, and modularization, and is widely used in the fields...
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IPC IPC(8): H02J3/32H02J3/28H02J3/16H02J3/18H02J3/38
CPCH02J3/32H02J3/28H02J3/16H02J3/18H02J3/381H02J2300/24H02J2300/28Y02E70/30Y02E40/30
Inventor 陈满李勇琦彭鹏汪志强李毓烜朱焕杰雷旗开文晶于华龙
Owner SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD