CN-115798761-B - Power adjustment cooperative control method for heat pipe pile-supercritical carbon dioxide nuclear power device

CN115798761BCN 115798761 BCN115798761 BCN 115798761BCN-115798761-B

Abstract

The invention discloses a power regulation cooperative control method of a heat pipe reactor-supercritical carbon dioxide nuclear power plant, which comprises the steps of judging that the deviation percentage of the actual output power and the expected output power of a turbine compressor unit is smaller than a preset proportion value or a proportion range and larger than zero, taking a working medium flow control flow of the turbine compressor unit as a main regulation mode, taking a heat pipe reactor power control flow as an auxiliary regulation mode, judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is larger than the preset proportion value or the proportion range, taking the heat pipe reactor power control flow as the main regulation mode, and taking the working medium flow control flow of the turbine compressor unit as the auxiliary regulation mode. The comprehensive cooperative multi-target control mode of the main controller and the auxiliary controller is beneficial to ensuring that the turbine compressor unit has quicker power response to the outside, and meanwhile, the energy conversion efficiency of the heat pipe pile-supercritical carbon dioxide nuclear power device is improved, and the energy conversion efficiency and the quick maneuverability of the nuclear power device are both considered.

Inventors

GUO XIAOJIE
DAI CHUNHUI
SONG PING
ZHAO ZHENXING
Huang Chonghai
Xu Guangzhan
ZOU ZHENHAI
ZHENG WEI
FENG YI
Sun Quqin
KE ZHIWU
CHAI WENTING
ZHOU HONGKUAN
LI XIANLING
LIN YUANSHENG

Assignees

中国船舶重工集团公司第七一九研究所

Dates

Publication Date: 20260505
Application Date: 20221114

Claims (9)

1. The power adjustment cooperative control method for the heat pipe pile-supercritical carbon dioxide nuclear power device is characterized by comprising the following steps of: Judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is smaller than a preset proportion value or a preset proportion range and larger than zero, taking the working medium flow control flow of the turbine compressor unit as a main regulation mode and taking the heat pipe reactor power control flow as an auxiliary regulation mode; And judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is larger than the preset proportion value or the preset proportion range, taking the heat pipe reactor power control flow as a main regulation mode and taking the turbine compressor unit working medium flow control flow as an auxiliary regulation mode.
2. The cooperative control method as claimed in claim 1, wherein the determining that the deviation percentage of the actual output power of the turbine compressor unit and the expected output power is smaller than a preset ratio value or a preset ratio range and larger than zero, takes the turbine compressor unit working medium flow control flow as a main regulation mode, and takes the heat pipe reactor power control flow as an auxiliary regulation mode specifically includes: The deviation percentage of the actual output power of the turbine compressor unit and the expected output power is judged to be smaller than a preset proportion value or a preset proportion range and larger than zero, and a first weight coefficient for controlling the working medium flow of the turbine compressor unit is set to be larger than a first weight coefficient for controlling the power of the heat pipe reactor, wherein the sum of the first weight coefficient for controlling the working medium flow of the turbine compressor unit and the first weight coefficient for controlling the power of the heat pipe reactor is 1; The method comprises the steps that a first result obtained by multiplying a power deviation signal of actual output power and expected output power of a turbine compressor unit by a first weight coefficient of working medium flow control of the turbine compressor unit is input into a working medium flow control flow of the turbine compressor unit; And a second result obtained by multiplying a power deviation signal of the actual output power and the expected output power of the turbine compressor unit by the first weight coefficient of the heat pipe reactor power control is input into the heat pipe reactor power control flow.
3. The cooperative control method as claimed in claim 1, wherein the determining that the deviation percentage of the actual output power of the turbine-compressor unit and the expected output power is greater than the preset ratio value or the preset ratio range, takes the heat pipe reactor power control flow as a main regulation mode, and takes the turbine-compressor unit working medium flow control flow as an auxiliary regulation mode specifically includes: Judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is larger than the preset proportion value or the preset proportion range, and setting a second weight coefficient of the working medium flow control of the turbine compressor unit smaller than a second weight coefficient of the heat pipe reactor power control, wherein the sum of the second weight coefficient of the working medium flow control of the turbine compressor unit and the second weight coefficient of the heat pipe reactor power control is 1; The third result obtained by multiplying the power deviation signal of the actual output power and the expected output power of the turbine compressor unit by the second weight coefficient of the working medium flow control of the turbine compressor unit is input into the working medium flow control flow of the turbine compressor unit; And a fourth result obtained by multiplying a power deviation signal of the actual output power and the expected output power of the turbine compressor unit by the second weight coefficient of the heat pipe reactor power control is input into the heat pipe reactor power control flow.
4. The cooperative control method of claim 2, wherein the smaller the percentage of deviation of the actual output power of the turbine-compressor unit from the desired output power, the greater the turbine-compressor-unit working fluid flow control first weight coefficient.
5. The cooperative control method of claim 3, wherein the greater the percentage of deviation of the actual output power of the turbine-compressor unit from the desired output power, the greater the heat pipe reactor power control second weight coefficient.
6. The cooperative control method of claim 1, wherein the percentage deviation of the actual output power of the turbine-compressor unit from the desired output power is determined to be zero, and the heat pipe reactor power controller command and the turbine-compressor unit working fluid flow controller command are maintained unchanged.
7. A cooperative control method as claimed in any one of claims 2 to 3, wherein the turbine-compressor-unit working fluid flow control scheme includes: Inputting the first result or the third result into a turbine compressor unit flow demand calculator to obtain a turbine compressor unit working medium flow set value; And (3) inputting the difference between the working medium flow output value and the working medium flow set value of the turbine compressor unit into a flow controller to obtain an opening signal of the turbine inlet flow regulating valve, and controlling the working medium flow of the turbine compressor unit based on the opening signal.
8. A cooperative control method as claimed in any one of claims 2 to 3, wherein the heat pipe reactor power control flow comprises: The second result or the fourth result is input into a heat pipe reactor power demand calculator to obtain a heat pipe reactor power set value; The heat pipe reactor power output value and the heat pipe reactor power set value are input into the reactivity controller after being differenced to obtain the heat pipe insertion position set value, and the heat pipe position is moved to the insertion position set value output by the reactivity controller through the heat pipe driving mechanism.
9. The cooperative control method of claim 1, wherein the percentage deviation of the actual output power from the desired output power of the turbine-compressor unit is formulated as: where η is the deviation percentage, P E is the desired output power, and P v is the actual output power.

Description

Power adjustment cooperative control method for heat pipe pile-supercritical carbon dioxide nuclear power device Technical Field The invention relates to the technical field of nuclear power plant control system design, in particular to a heat pipe pile-supercritical carbon dioxide nuclear power plant power regulation cooperative control method. Background The deep sea is a new Xinjiang domain for sustainable development of human in the 21 st century, which is reserved in various strategic resources required for future development of human society. The large unmanned submarine is an effective tool for deep sea and two-pole under-ice hydrological investigation, resource survey and development, and can independently navigate underwater for a long time. However, the conventional energy cannot meet the requirement of long-time and large-scale autonomous operation of the large unmanned submersible vehicle, and the insufficient energy power has become a key factor for restricting the development of the unmanned submersible vehicle. The nuclear power device has the characteristics of high energy density, long service life, no dependence on air and the like, and is an ideal choice of a power source of the large unmanned submersible vehicle. However, in the design of the existing nuclear power plant control system, the heat pipe reactor power adjustment always starts from the energy matching angles of the heat pipe reactor system and the supercritical carbon dioxide power generation system, and the control process needs to comprise the heat pipe reactor system and the supercritical carbon dioxide power generation system, so that the dynamic response characteristic of the output power adjustment of the heat pipe reactor-supercritical carbon dioxide nuclear power plant is poor, and the maneuverability of the whole system is not high. The turbine compressor unit working medium flow regulation process only comprises a supercritical carbon dioxide power generation system, and the energy matching relationship of the heat pipe pile system and the supercritical carbon dioxide power generation system is not considered, so that the energy conversion efficiency of the heat pipe pile-supercritical carbon dioxide nuclear power device is lower. Disclosure of Invention Aiming at least one defect or improvement requirement in the prior art, the invention provides a power adjustment cooperative control method of a heat pipe pile-supercritical carbon dioxide nuclear power device, which is used for solving the technical problem that the energy conversion efficiency and the quick maneuverability of the nuclear power device cannot be simultaneously considered when the output power of a turbine compressor unit is changed. In order to achieve the above purpose, the invention provides a power adjustment cooperative control method of a heat pipe pile-supercritical carbon dioxide nuclear power device, comprising the following steps: Judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is smaller than a preset proportion value or a preset proportion range and larger than zero, taking the working medium flow control flow of the turbine compressor unit as a main regulation mode and taking the heat pipe reactor power control flow as an auxiliary regulation mode; And judging that the deviation percentage of the actual output power and the expected output power of the turbine compressor unit is larger than the preset proportion value or the preset proportion range, taking the heat pipe reactor power control flow as a main regulation mode and taking the turbine compressor unit working medium flow control flow as an auxiliary regulation mode. Further, if the deviation percentage of the actual output power of the turbine compressor unit and the expected output power is less than the preset proportion value or the preset proportion range and greater than zero, the method takes the turbine compressor unit working medium flow control flow as a main regulation mode, and takes the heat pipe reactor power control flow as an auxiliary regulation mode, the method specifically comprises the following steps: The deviation percentage of the actual output power of the turbine compressor unit and the expected output power is judged to be smaller than a preset proportion value or a preset proportion range and larger than zero, and a first weight coefficient for controlling the working medium flow of the turbine compressor unit is set to be larger than a first weight coefficient for controlling the power of the heat pipe reactor, wherein the sum of the first weight coefficient for controlling the working medium flow of the turbine compressor unit and the first weight coefficient for controlling the power of the heat pipe reactor is 1; The method comprises the steps that a first result obtained by multiplying a power deviation signal of actual output power and expected output power of a turbine