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Energy storage phase modifier device based on hydraulic coupling

A technology of hydraulic coupling and hydraulic coupling, which is used in electromechanical devices, circuit devices, control mechanical energy, etc.

Pending Publication Date: 2021-11-26
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a hydraulic coupling-based energy-storage camera device to solve the problem of how to improve the inertial time constant of the camera and at the same time enable the camera to have a frequency modulation capability

Method used

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  • Energy storage phase modifier device based on hydraulic coupling
  • Energy storage phase modifier device based on hydraulic coupling

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Embodiment Construction

[0025] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0026] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses an energy storage phase modifier device based on hydraulic coupling. According to the energy storage phase modifier device, the power input end of hydraulic coupler equipment is connected with a synchronous phase modifier, and the power output end of the hydraulic coupler equipment is connected with the power input end of energy storage flywheel equipment. According to the synchronous phase modifier device, the inertia time constant of the whole phase modifier device can be increased through the energy storage flywheel equipment connected with the hydraulic coupler device, and the system frequency is kept stable; meanwhile, when the frequency of a power grid rises, the energy storage flywheel equipment can increase the speed of an energy storage flywheel through the hydraulic coupler device, so that the active power absorbed from the power grid by the whole device rises; and when the frequency of the power grid is reduced, the energy storage flywheel equipment can decelerate the energy storage flywheel through the hydraulic coupler device, so that the active power absorbed from the power grid by the whole device is reduced or the whole device sends active power to the power grid, and thus, the phase modifier device has a certain primary frequency modulation function.

Description

technical field [0001] The present invention relates to the technical field of electric motors and electric appliances, and more specifically, relates to an energy storage and phase adjustment device based on hydraulic coupling. Background technique [0002] With the substantial increase in the proportion of new energy, the trend of power electronics in the power system is increasing, and the voltage support, inertia support and frequency modulation capabilities of the power system continue to weaken, which seriously threatens the safe and stable operation of the power system. For this reason, GB 38755 "Guidelines for the Safety and Stability of Power Systems" released in 2019 requires that new energy stations should provide certain short-circuit capacity and inertia support to the system; Regulation resources such as power stations, pumped storage power stations, and energy storage power stations, and dynamic reactive power adjustment equipment such as condensers, static sy...

Claims

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Application Information

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IPC IPC(8): H02J3/30H02J3/24H02J3/48H02K7/116
CPCH02J3/30H02J3/241H02J3/48H02K7/116Y02E60/16
Inventor 王东阳李志强孙华东郭强李文锋
Owner CHINA ELECTRIC POWER RES INST
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