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Temperature difference energy storage grid electricity peak shaving system

A temperature difference and peak shaving technology, applied in electrical components, generators/motors, AC network load balancing, etc., can solve the problems of large equipment impact, increased safety risks, and high geographical location requirements, and achieve the effect of effective peak shaving

Active Publication Date: 2012-12-19
青岛风生海水淡化研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have more or less certain problems, such as oil (gas) or coal-fired unit load reduction has a greater impact on equipment, nuclear power unit load reduction operation increases safety risks, and pumped storage power plants have higher requirements for geographical location ,and many more

Method used

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  • Temperature difference energy storage grid electricity peak shaving system
  • Temperature difference energy storage grid electricity peak shaving system
  • Temperature difference energy storage grid electricity peak shaving system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The temperature difference energy storage network power peak regulation system of this embodiment is as follows: figure 1 As shown, it includes a heat pump 1 , a hot water pump 4 , a cold water pump 5 , a hot water tank 6 , a cold water tank 7 and a thermoelectric generator 2 . The heat pump 1 contains a condenser 8, an evaporator 9, a compressor 13 and an expansion valve 3, wherein the condenser 8 and the evaporator 9 are respectively arranged in a closed The first heat exchange box 10 and Second heat exchange box 11 Inside. The thermoelectric generator 2 contains heat exchange with the hot water and the cold water from the hot water tank and the cold water tank respectively. Heater and Cooler, The thermoelectric generator 2 of the present embodiment is a thermoelectric generator using a semiconductor, Heater and Cooler Respectively, hot water and cold water flow through the two ends of the semiconductor hot water channel and cold water channel (not shown...

Embodiment 2

[0027] The peak-shaving system of temperature difference energy storage network in this embodiment is perfected on the basis of Embodiment 2, the difference is as follows figure 2 As shown: the thermoelectric generator 2 includes a turbine 17 , a generator 18 , a hydraulic pump 19 , a vaporizer 20 and a liquefier 21 . The vaporizer 20 and the liquefier 21 are respectively arranged in a closed No. Three heat exchange boxes 22 and The fourth heat exchange box 23 Inside. The mechanical force output end of the turbine 17 is connected to the mechanical force input end of the generator 18 through a transmission mechanism, Gas chamber of turbine 17 , the hydraulic pump 19, the vaporizer 20 and the liquefier 21 are connected through a third pipeline to form a working fluid closed loop, and the thermoelectric generator 3 Heater and Cooler respectively The third heat exchange box 22 and The fourth heat exchange box 23 . Turbine machine 17 selects turbine machine for use,...

Embodiment 3

[0029] The temperature difference energy storage network power peak regulation system of this embodiment is perfected on the basis of Embodiment 1 and Embodiment 2. The perfection is that the temperature difference energy storage system also includes a warm water tank 24 and a pool 25, and the warm water tank 24 is connected in series hot water closed circuit middle The first heat exchange box 10 with thermoelectric generator 3 Heater Between, the pool 25 is connected in series Cold water closed loop middle Second heat exchange box 11 with thermoelectric generator 3 Cooler between.

[0030] In this embodiment, on the basis of Embodiment 1 and Embodiment 2, the two situations after the above-mentioned improvements are respectively as follows image 3 and Figure 4shown. Warm water tank 24 and pool 25 are also all provided with thermal insulation layer, and add moisture-proof layer, protective layer etc.

[0031] In this way, the temperature difference energy storage...

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Abstract

The invention relates to a temperature difference energy storage grid electricity peak shaving system and belongs to the technical field of power supply. The system comprises a heat pump, a hot water pump, a cold water pump, a hot water tank, a cold water tank and a temperature difference generator. The temperature difference generator comprises a thermal device and a cold device which respectively carry out heat exchange with hot water and cold water. A condenser and an evaporator of the heat pump are respectively arranged in a first heat exchange box and a second heat exchange box. The first heat exchange box, the hot water tank, the hot water pump and the thermal device are connected through a first circulation pipeline to form a hot water closed circulating circuit. The second heat exchange box, the cold water tank, the cold water pump and the cold device are connected through a second circulation pipeline to form a cold water closed circulating circuit. A first bypass and a second bypass are respectively arranged on the circulation pipelines at the positions of the thermal device and the cold device. Motors of the heat pump and a water pump are respectively externally connected with commercial power or connected with a power output end of the temperature difference generator. The system utilizes the heat pump to convert redundant grid electricity into heat energy, stores the heat energy, then utilizes the temperature difference generator to convert the heat energy into electric energy and feeds back the electric energy to a power grid so as to carry out effective peakshaving on the power grid.

Description

technical field [0001] The invention relates to a grid power peak-shaving system that stores grid power as heat energy and then uses temperature difference to generate electricity and connect to the grid, and belongs to the technical field of power supply systems or hydraulic engines. Background technique [0002] The electric energy in the existing power grid cannot be stored in the power grid. Whenever the power consumption peaks, it is generally met by increasing the output of the generator set and starting more units or limiting the load. And when electricity consumption is low every day (as in the middle of the night), some generating units are always shut down and the output of those units that continue to operate are lowered to a minimum to adapt to the seldom needs of electricity consumption. This behavior of adjusting power generation output at any time to adapt to the daily periodic changes in power load is called grid power peak shaving. [0003] The existing mea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28H02N11/00
CPCY02E20/14
Inventor 顾为东颜卓勇
Owner 青岛风生海水淡化研究院有限公司
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