Electric heat-storage device configuration system

A configuration system, electric heat storage technology, applied in circuit devices, power network operating system integration, heat storage equipment, etc., can solve the problems of incapable unit peak regulation capability, unadjustable power range, and difficulty in adapting to large-area heating needs. , to achieve the effect of increasing flexibility and improving the ability of deep peak regulation

Pending Publication Date: 2017-05-31
HEPU ENERGY ENVIRONMENTAL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a solid electric thermal storage device is simply used, since the power range cannot be adjusted, the peak-shaving capacity of the power plant unit cannot be deeply excavated, which will affect the overall economics of peak-shaving. However, due to the lack of heat storage function, it cannot meet the needs of residents for continuous heating in winter. Although some projects are equipped with hot water tank storage, due to the limited heat storage capacity of hot water tanks, it is difficult to meet the heating needs of large areas.

Method used

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  • Electric heat-storage device configuration system

Examples

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Embodiment 1

[0033] Such as figure 1 As shown, a system for configuring electric heat storage devices includes a peak-shaving system, a voltage transformation device and a power grid. The peak-shaving system is provided with multiple sets of solid electric heat storage devices 3, and a set of liquid electric heat storage devices 4 is set at the same time. The solid electric heat storage device 3 and the liquid electric heat storage device 4 are connected in parallel through a grid.

[0034] In this embodiment, the whole power plant is used as a unit, the power supply voltage of the electric heat storage device is selected as 66kV, and the liquid electric heat storage device 4 is selected as a high-power electrode hot water heater. A new incoming line interval is added to the original 220kV busbar 6 of the power plant, and after being adjusted to 66kV by a 220 / 66kV step-down transformer 1, it is used by the solid electric heat storage device 3, and the electric heat storage device is equipp...

Embodiment 2

[0038] Such as figure 2 As shown, a system for configuring electric heat storage devices includes a peak-shaving system, a voltage transformer and a power grid. The peak-shaving system is provided with multiple sets of solid electric heat storage devices 3, and a set of liquid electric heat storage devices 4 is set at the same time. The solid electric heat storage device 3 and the liquid electric heat storage device 4 are connected in parallel through a grid.

[0039]In this embodiment, the whole power plant is taken as the whole unit. The liquid electric thermal storage device 4 uses a high-power electrode hot water heater, and the power supply voltage of the solid electric thermal storage device 3 and the electrode hot water heater device is selected as 20kV. A new incoming line interval is added to the original 220kV bus 6 of the power plant, and after being adjusted to 20kV by a 220 / 20kV step-down transformer 7, it is connected to the 20kV bus 8 to supply power for the el...

Embodiment 3

[0043] Such as image 3 As shown, a system for configuring electric heat storage devices includes a peak-shaving system, a voltage transformation device and a power grid. The peak-shaving system is provided with multiple sets of solid electric heat storage devices 3, and a set of liquid electric heat storage devices 4 is set at the same time. The solid electric heat storage device 3 and the liquid electric heat storage device 4 are connected in parallel through a grid.

[0044] In this embodiment, each unit is taken as a unit as a whole, and the voltage of the electric heat storage device is selected as 20kV, and the power is supplied by the 20kV bus 8 . The electric heat storage device is equipped with a 20kV bus switchgear on site as a normal start-stop control switch for the electric heat storage device. The total power supply of the 20kV bus 8 can be separated from the phase bus and directly connected to the 20kV main closed bus of the generator 10 through the outlet circ...

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PUM

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Abstract

The invention provides a configuration system of an electric heat-storage peak shaving device, relative safe and reliable, flexible in operation and not too many restrictions on power plant construction conditions. The electric heat-storage device configuration system comprises a peak shaving system, a potential device and a grid, multiple sets of solid heat storage devices of the peak shaving system is taken as a peak shaving body in an integral formed by an entire power plant or a single unit, one set or multiple sets of liquid electric-storage devices are arranged at the same time, the solid heat storage devices are connected with the liquid electric-storage devices through the grid. By the arrangement, intelligent smooth depth peak saving of the grid is realized, impact on the grid is reduced, and heat supply and livelihood protection and peak shaving demands on the grid can be met.

Description

technical field [0001] The invention relates to the field of deep peak-shaving design of electric power, in particular to the field of scheme configuration design of an electric heat storage peak-shaving device of a cogeneration power plant. Background technique [0002] The combined heat and power units operate in the mode of "heating and power generation", and the peak regulation capacity is only about 10%. Difficulty in peak regulation has become the most prominent problem in power grid operation. If the contradiction between power grid peak regulation and thermal power unit heating is not properly handled, it may affect the safety of residents' heating in winter and affect people's livelihood. At present, cogeneration power plants are mainly 2×300MW units. In order to meet the requirements of deep peak regulation of the power grid, multiple groups of solid electric thermal storage devices with a total capacity of 240~320MW can be configured to complete the peak regulati...

Claims

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Application Information

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IPC IPC(8): H02J3/14H02J3/38F28D20/00
CPCH02J3/14H02J3/381F28D20/0034F28D20/0056H02M1/36Y02E20/14Y04S20/222Y02B70/3225Y02E60/14
Inventor 崔华谭智陈辉
Owner HEPU ENERGY ENVIRONMENTAL TECHNOLOGY CO LTD
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