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Electrode boiler combined energy storage facility power grid frequency modulation system

A technology for electrode boilers and facilities, applied in the direction of AC network load balancing, single network parallel feeding arrangement, reducing/preventing power oscillation, etc., can solve problems such as system collapse, frequency fluctuation, etc., to increase response rate, increase safety, The effect of prolonging the life of the unit

Inactive Publication Date: 2017-11-24
HEPU TECH DEV BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research shows that in the case of sudden accidents and large load (power) disturbances, although many units have the ability to adjust the load, the frequency modulation response to the frequency deviation is almost zero, and at this time there will be a large frequency fluctuation or even a system failure. crash accident

Method used

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  • Electrode boiler combined energy storage facility power grid frequency modulation system
  • Electrode boiler combined energy storage facility power grid frequency modulation system
  • Electrode boiler combined energy storage facility power grid frequency modulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 2 As shown, a system of electrode boiler combined with energy storage facilities for power grid frequency regulation, including:

[0056] The frequency modulation control module includes the power grid power dispatching center and the centralized control system of the power plant, which is connected to the power supply control module and the power control cabinet to control both, and the power control cabinet includes the electrode boiler power control cabinet 6 and / or the energy storage facility power control cabinet 9;

[0057] The power supply control module, whose input end is connected to the output of the power plant, and whose output end is connected to the power control cabinet of the electrode boiler 5 or the energy storage facility 10, is used to convert the electric energy output by the power plant and then send it to the power control cabinet, or to control the energy storage facility Discharge to generator outlet line through transformer an...

Embodiment 2

[0097] Such as image 3 As shown, this embodiment is basically the same mechanism as the frequency modulation system of the electrode boiler or energy storage facility described in Embodiment 1, the difference is that the power supply of the electrode boiler or energy storage facility is connected at 220kV~500kV after the step-up station of the unit, Then the voltage is reduced to 380V~110kV by the voltage reducer to supply power to the electrode boiler or to charge the energy storage facility.

Embodiment 3

[0099] Such as Figure 4 As shown, this embodiment is basically the same mechanism as the frequency modulation system of the electrode boiler or energy storage facility described in Embodiment 1, the difference is that the power supply of the electrode boiler or energy storage facility If the line voltage is consistent with the voltage required by the electrode boiler or energy storage facility, it can be connected directly through an electrical switch. If the voltage is different, it can be adjusted to 380V~110kV through a transformer to supply power to the electrode boiler or energy storage facility.

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Abstract

The invention provides an electrode boiler combined energy storage facility power grid frequency modulation system comprising a power grid and a power plant frequency modulation control module, an electrode boiler power control cabinet and an electrode boiler and heat output module; the electrode boiler power adjusting response speed is fast; the electrode boiler is combined with a machine unit; the electrode boiler electricity consumption load power is fast elevated to realize machine unit on-grid energy fast load responses, thus preventing operation difficulty increases and machine unit life reduction caused by machine unit self frequency modulation measures like machine unit steam engine control valve and steam engine rotating speed rapid changes caused by frequency modulation AGC and DEH adjustments, and high-low add switches; the hot water or steams heated by the electrode boiler can provide heat supply in winter; for a straight condensing unit or a summer thermoelectricity combined production unit, the hot water or steam can be conducted to a corresponding power plant thermal system according to temperature and pressure, thus using the electrode boiler to combine with the unit generator in all seasons, and enabling the machine unit to fast respond to the power grid frequency modulation demands.

Description

technical field [0001] The invention relates to the field of power grid frequency regulation, in particular to a thermal power generating set using electrode boilers or energy storage facilities to participate in power grid frequency regulation auxiliary services. Background technique [0002] In recent years, with the rapid development of China's national economy, people's demand for electricity has also increased sharply, and the peak-to-valley difference has increased day by day. The peak-to-valley ratio of China's power supply is about 10 / 0.7, much higher than the average level of 1 / 0.63 in developing countries, and much higher than the peak-to-valley ratio of 1 / 0.25 in the United States. Therefore, the peak shaving task of China's power generation units is arduous. The frequency regulation ability of generator sets is the first important barrier to maintain the power balance, safety and stability of the power grid. Its regulation ability and performance are particularly...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/28H02J3/24
CPCH02J3/46H02J3/24H02J3/28
Inventor 崔华杨豫森谭智陈辉展望陈超朱明志
Owner HEPU TECH DEV BEIJING CO LTD
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