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Method and device for adjusting electricity transmission power of power grid in 'machine-following-stack' mode

An adjustment method and technology of power transmission, applied in the field of power stations, can solve the problem of "machine and stack" unable to quickly adjust power and other problems

Active Publication Date: 2021-11-19
HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention lies in the fact that the operation mode of "machine with stack" in the prior art cannot quickly adjust the power to meet the power requirements of the power grid, thereby providing a "machine with stack" mode grid transmission power. Adjustment method and adjustment device

Method used

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  • Method and device for adjusting electricity transmission power of power grid in 'machine-following-stack' mode
  • Method and device for adjusting electricity transmission power of power grid in 'machine-following-stack' mode
  • Method and device for adjusting electricity transmission power of power grid in 'machine-following-stack' mode

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Embodiment 1

[0030] Such as figure 1 As shown, the embodiment of the present invention provides a method for adjusting the transmission power of the power grid in the "machine-to-stack" mode. The adjustment method includes:

[0031] S1. Obtain the current frequency of the power grid;

[0032] In the embodiment of the present invention, it is necessary to monitor the actual frequency of the power grid in real time through a monitoring system such as a generator set, and determine whether the actual frequency of the power grid fluctuates. The actual grid frequency obtained at the current moment is the current frequency.

[0033] S2. When the current frequency is different from the preset frequency of the grid, acquire a frequency difference between the current frequency and the preset frequency; optionally, the preset frequency is 50 Hz.

[0034] Usually, the preset frequency of the power grid is 50HZ. Therefore, when the frequency of the power grid fluctuates, the current frequency and th...

Embodiment 2

[0064] The embodiment of the present invention also provides a device for adjusting the transmission power of the power grid in the "machine-to-stack" mode. The device includes:

[0065] The first acquisition module is configured to acquire the current frequency of the power grid; for details, please refer to step S1 in the above embodiment, which will not be repeated here.

[0066] The second acquisition module is configured to acquire the frequency difference between the current frequency and the preset frequency when the current frequency is different from the preset frequency of the power grid; for details, please refer to step S2 of the above-mentioned embodiment , which will not be repeated here.

[0067] The processing module is configured to determine the pressure adjustment amount of the main steam of the steam turbine according to the frequency difference; for details, please refer to step S3 in the above embodiment, and details will not be repeated here.

[0068] A...

Embodiment 3

[0071] The embodiment of the present invention also provides an electronic device, the electronic device includes: a memory and a processor, the memory and the processor are connected to each other in communication, the memory stores computer instructions, and the processor passes Executing the computer instructions implements a method for adjusting the power transmission power of the power grid in the "machine-to-stack" mode described in any of the above-mentioned embodiments.

[0072] The electronic device may also include: an input device and an output device.

[0073] The processor, the memory, the input device, and the output device may be connected through a bus or in other ways, and the connection through a bus is used as an example in the embodiment of the present invention.

[0074] The processor may be a central processing unit (Central Processing Unit, CPU). The processor can also be other general-purpose processors, digital signal processors (Digital Signal Proces...

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Abstract

The invention discloses a method and a device for adjusting the electricity transmission power of a power grid in a 'machine-following-stack' mode. The adjusting method comprises the following steps: acquiring the current frequency of the power grid; when the current frequency is different from a preset frequency of the power grid, acquiring a frequency difference value between the current frequency and the preset frequency; according to the frequency difference value, determining a pressure regulating variable of main steam of a steam turbine and a power regulating variable of a reactor; and adjusting the air inlet flow of a steam turbine adjusting valved based on the pressure adjusting quantity, and adjusting the reactor power based on the power adjusting quantity. According to the arrangement, when the operation mode of the nuclear power station is machine-following-reactor, the frequency difference value is converted into the pressure regulating variable, and then the pressure regulating variable directly acts on the pressure controller, so that the main steam pressure of the steam turbine can be directly changed, and the power grid power requirement brought by the power grid frequency change can be quickly responded.

Description

technical field [0001] The invention relates to the technical field of power stations, in particular to a method and device for adjusting the transmission power of a power grid in a "machine-to-stack" mode. Background technique [0002] Currently, different power grids have different power supply requirements. Under normal circumstances, it is how much power the grid needs, and the power station will generate corresponding power according to the grid demand. Because the generator of the power station is directly connected to the power grid, in order to ensure that the power station generates corresponding power generation, and the power generation corresponds to the power generated by the generator, it is necessary to control the generator at the corresponding power. [0003] In the prior art, when nuclear power is used for power generation, the operation mode of the nuclear power plant is usually the "stack-following machine" mode, that is, the steam turbine moves first, a...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/24
CPCH02J3/466H02J3/241
Inventor 陈振民刘猛刘世杰高红
Owner HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD
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