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System and method for dynamically regulating quality of partial power grids for household energy storage systems

A system dynamic, local power grid technology, applied in electrical components, circuit devices, AC network circuits, etc., to ensure safe use

Inactive Publication Date: 2017-12-05
ALPHA ESS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the power grid dispatchers have to continuously issue frequency regulation commands to the power plants to ensure that the frequency is within the qualified range. In this way, the quality of the power grid can only be adjusted macroscopically and on a large scale, and cannot be adjusted too much

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  • System and method for dynamically regulating quality of partial power grids for household energy storage systems
  • System and method for dynamically regulating quality of partial power grids for household energy storage systems

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Embodiment Construction

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0024] Such as figure 1 As shown, a household energy storage system disclosed in the present invention dynamically adjusts the quality of a local power grid, including an electric meter, an energy management system, a grid-connected inverter, and a wireless grid dispatching device, wherein the energy management system, grid-connected Inverters and radio network dispatching devices form a passive dispatching system, and electric meters, energy management systems and grid-connected inverters form an active dispatching system. When the passive dispatching system cannot be used, the active dispatching system performs dispatching operations.

[0025] Specifically, in the passive dispatching system, the radio network dispatching device wirelessly obtains the real-time power grid quality inf...

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Abstract

The invention discloses a system for dynamically regulating the quality of partial power grids for household energy storage systems. The system comprises an energy management system, a grid-connected inverter and a wireless power grid dispatching device. Real-time power grid quality information of power grid companies can be wirelessly acquired by the wireless power grid dispatching device, the acquired power grid quality information can be transmitted to the energy management system, analysis and computation can be carried out by the energy management system according to the fed power grid quality information combined with preset standard thresholds, power grid frequency and voltage fluctuation range values can be obtained, active electric energy or reactive electric energy can be outputted by the grid-connected inverter to power grids to be regulated, and the grid-connected inverter is used as an execution unit.

Description

technical field [0001] The invention relates to an upgrading method of an energy storage system, in particular to a system and a method for dynamically adjusting the quality of a local power grid by a household energy storage system. Background technique [0002] Frequency and voltage are the two major indicators of grid power quality. When the active power generated by the grid is equal to the user's active load, the frequency remains unchanged; when it is less than the active load, the frequency drops, and when it is greater When the power is equal to the user's reactive load, the voltage remains unchanged; when it is less than the reactive load, the voltage drops, and when it is greater than the reactive load, the voltage rises. Since the load changes randomly, the frequency and voltage of the power grid fluctuate. [0003] Therefore, changing the active power and reactive power output by the generator can adjust the grid frequency and grid voltage. Therefore, grid dispa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/24
CPCH02J3/28H02J3/241
Inventor 刘鲁健林栋袁宏亮王珺
Owner ALPHA ESS CO LTD
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