Permanent magnetic motor-type elastic energy storage power generation system
A technology of permanent magnet motor and power generation system, applied in the field of power transmission and distribution, can solve the problems of aggravating the peak load of the power grid and huge investment.
Active Publication Date: 2011-05-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
At present, wind power generation and photovoltaic power generation have entered a period of rapid development. Due to the inherent "intermittent" and "fluctuation" of these green power sources, their large-scale access will greatly increase the load on the power grid. The method of peak shaving reserve capacity means that a huge amount of money needs to be invested in the construction of supporting peak shaving units
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[0021] Based on the principle of elastic energy storage of a vortex spring, the present invention proposes an elastic energy storage power generation system that can be connected to a power grid and quickly store energy and generate electricity. Each system unit is composed of energy storage box, electromagnetic brake, gear box, permanent magnet motor, converter, unit controller, filtering device and other parts. A plurality of such system units are combined, and a central monitor realizes the orderly control of multiple system units, which can form an elastic energy storage power station. The present invention can play the following roles in the power system:
[0022] (1) It can be used as an important peak-shaving method to solve the problem of peak-valley difference adjustment of the power grid. This system can be built in various parts of the power grid according to the distribution of power grid demand. It can store energy and generate electricity through the real-time c...
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The invention discloses a permanent magnetic motor-type elastic energy storage power generation system which belongs to the technical field of power transmission and distribution and is used for solving the problem of energy storage and peak regulation of a power network. The system comprises a center monitor and a plurality of system units, each system unit comprises an energy storage tank, an electromagnetic brake, a speed-changing gearbox, a permanent magnetic motor, a converter, a breaker, a unit controller and the like, a rotor of the permanent magnetic motor is connected with the energystorage tank via the speed-changing gearbox and the electromagnetic brake, and a stator coil is connected with the power network via the converter and the breaker; monitoring ends of the energy storage tank, the electromagnetic brake, the speed-changing gearbox, the permanent magnetic motor, the converter and the breaker are all connected with the unit controller, and the unit controller is connected with the center monitor via a communication interface; and the energy storage tank can be provided with a plurality of vortex spring boxes which are mutually linked in series. The permanent magnetic motor-type elastic energy storage power generation system provided by the invention not only can store and release electric energy considerably, but is also free from the limitation of geological conditions, pollution and maintenance as well as long in service life, thus key technical supports are provided for the construction of intelligent power network and the incorporation of a large-scaleintermittent power supply into the power network.
Description
technical field [0001] The invention relates to an elastic energy storage power generation device capable of converting excess electric energy of a power grid into elastic potential energy storage and feeding the stored energy back to the power grid, belonging to the technical field of power transmission and distribution. Background technique [0002] The power generation, transmission, and consumption of the power system are carried out at the same time, and the balance between supply and demand of electric energy must be maintained at all times to ensure the normal operation of the power system. In view of the fact that electric energy cannot be stored in large quantities at present, and the electric load is changing at any time, the power system must reserve enough reserve capacity to cope with various emergencies and maintain the balance between supply and demand of electric power. At present, wind power generation and photovoltaic power generation have entered a period ...
Claims
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Login to View More IPC IPC(8): H02J3/28H02K7/116H02K7/10
Inventor 米增强余洋王璋奇汤敬秋
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)