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Off-network multi-unit parallel energy storage system shutdown method, system, equipment and medium

An energy storage system, multi-unit technology, applied in the direction of AC network load balancing, etc., can solve the problem of safe shutdown of off-grid multi-unit parallel energy storage system

Pending Publication Date: 2022-05-13
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a shutdown method for an off-grid multi-unit parallel energy storage system, aiming to solve how to safely shut down the off-grid multi-unit parallel energy storage system under the premise of ensuring the technical advantages of droop control in the prior art technical issues

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  • Off-network multi-unit parallel energy storage system shutdown method, system, equipment and medium
  • Off-network multi-unit parallel energy storage system shutdown method, system, equipment and medium
  • Off-network multi-unit parallel energy storage system shutdown method, system, equipment and medium

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Embodiment Construction

[0075] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0076] refer to figure 1 , figure 1 It is a schematic structural diagram of the running device of the hardware running environment involved in the solution of the embodiment of the present invention.

[0077] Such as figure 1 As shown, the running device may include: a processor 1001 , such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002 , a network interface 1003 , and a memory 1004 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. Optionally, the network interface 1003 may include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1004 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volat...

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Abstract

The invention discloses a shutdown method, system and device of an off-grid multi-unit parallel energy storage system and a storage medium, the system comprises an energy management system and a plurality of parallel energy storage subsystems, and the energy management system is electrically connected with each energy storage subsystem; the energy management system determines a preset waiting duration according to the number of the energy storage subsystems and an instruction issuing period of the energy management system; issuing a preset waiting duration and a shutdown instruction to each energy storage subsystem every instruction issuing period; after the energy storage subsystem receives a shutdown instruction issued by the energy management system, the energy storage subsystem is set to be in a pre-shutdown mode; judging whether the pre-stop duration in the pre-stop mode reaches a preset waiting duration or not; and if the pre-stop duration reaches the preset waiting duration, stopping the energy storage subsystem. Therefore, under the conditions that hardware connection is not changed and hardware synchronizing signals are increased, the technical advantages of droop control are guaranteed, the off-network multi-unit parallel energy storage system can be shut down safely, and overload protection cannot be triggered.

Description

technical field [0001] The present invention relates to the field of power management, in particular to a shutdown method, system, equipment and computer-readable storage medium of an off-grid multi-unit parallel energy storage system. Background technique [0002] Such as image 3 As shown in the topology diagram of parallel operation of multiple units, ESS (energy storage system, energy storage system) needs to have an off-grid function under application conditions such as backup power, micro-grid, and black start. In order to meet customer capacity requirements, there are usually situations where multiple units are connected in parallel, off-grid and run in parallel. The traditional off-grid control modes are mainly VF (Voltage-Frequency, variable voltage-frequency) mode and droop mode. [0003] Since the parallel operation of the VF mode requires the establishment of CAN (Controller Area Network, controller area network) communication, and the need to distinguish master...

Claims

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Application Information

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IPC IPC(8): H02J3/28
CPCH02J3/28
Inventor 刘高文曹伟刘洋
Owner SUNGROW POWER SUPPLY CO LTD
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