Control and stability method of waste heat turbine generator in grid-connected operation of offshore power grid
A steam turbine generator and generator technology, applied in the direction of engine control, engine components, machines/engines, etc., can solve the problems that the power grid cannot be used, the waste heat of the steam turbine cannot be applied to the gas turbine generator, and the adjustment response is slow. Achieve good energy saving and emission reduction effects and economic benefits
Active Publication Date: 2021-11-12
ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP +1
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Problems solved by technology
In addition, the installed capacity of waste heat turbine generators is generally several times that of gas turbine generators, and its adjustment response is slow, unlike gas turbine generators.
Finally, there is currently no effective grid stabilization strategy for waste heat generators, which are energy recycling generators, in offshore power grids. The current priority tripping calculation method cannot be applied to waste heat steam turbines and gas turbine generators that generate waste heat.
Therefore, the current offshore power grid control strategy and stability strategy can no longer be used in the power grid with waste heat turbine generator
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[0043] Example: A certain power grid is located in the South China Sea and consists of a terminal power station, 12-1 power station, 12-1PUQB power station, and 11-1 power station. A total of 15 gas turbine generators and 1 waste heat turbine generator are used for each power station It supplies power to itself and the other 15 offshore platforms, with a total installed capacity of 88MW.
[0044]There are 6 gas turbine generators and 1 waste heat turbine generator in the terminal power station, of which 4 Siemens gas turbine generators have a maximum active output of 3200kW; 2 Ukrainian gas turbine generators, a single generator The maximum active output is 3500kW. The waste heat generated during the operation of these 6 gas turbine generators provides a source of waste heat for the waste heat turbine generator, and the maximum active output of the waste heat turbine generator is 10,000kW. There are 3 Siemens gas turbine generators in the 12-1 power station, and the maximum a...
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The invention relates to a control and stability method for the grid-connected operation of the waste heat steam turbine generator in the offshore power grid, and relates to the control technology for the grid-connected operation of the waste heat steam turbine generator in the offshore power grid. The method includes: S1. The waste heat generator is connected to the grid for power generation according to the maximum output power capacity of the waste heat generator, and the gas turbine generator in the same power station as the waste heat generator is connected to the grid in a constant active power output mode. The other power stations The gas turbine generator adopts the active power equal-proportion operation mode for grid-connected power generation; S2. Determine the grid reference frequency sampling point, and realize the frequency stability of the entire grid through the frequency up and down adjustment of the gas turbine generator. The invention can smoothly integrate the waste heat steam turbine generator of the power station into the power grid and operate stably and safely, and achieve good energy saving and emission reduction effects and economic benefits.
Description
technical field [0001] The invention relates to the control technology for the grid-connected operation of the waste heat steam turbine generator in the offshore power grid. Background technique [0002] The current control strategy for grid-connected operation of generators in offshore grids is generally to achieve a balance between the total output of grid generators and the total load of the grid by controlling the active output and reactive output of each generator. Or a fuel generator. The new energy generator, especially the waste heat turbine generator, is the first application in the offshore power grid. It is driven by the waste heat generated by the combustion of combustible gas by other gas turbines to generate electricity. From the point of view of improving energy efficiency, the power grid should not be stabilized by controlling or limiting the output of waste heat turbine generators. In addition, the installed capacity of the waste heat turbine generator is ...
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IPC IPC(8): F01D15/10F01D21/00
CPCF01D15/10F01D21/00F05D2220/60F05D2220/76F05D2270/061
Inventor 劳新力崔嵘熊永功李卫团宁有智邓传志张龙李雄陈康成梁建友王涛尉言磊张家健高传连莫吉汉黄礼祥郝富强康勇谢鑫涛
Owner ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP