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A large-scale steam turbine volumetric time constant test system and its test method

A technology of volume time constant and testing system, which is applied in the direction of engine testing, machine/structural component testing, measuring devices, etc. It can solve problems such as unstable adjustment process, inconsistent adjustment rhythm, and insufficient adjustment volume, so as to meet the stability of the power grid Calculation and analysis needs, fast increase and decrease load capacity, and the effect of improving reliability

Active Publication Date: 2017-03-22
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

[0003] When a large steam turbine participates in the primary frequency regulation process of the power grid, due to the large capacity of the unit, the high level of steam parameters, and the existence of the volume of the steam turbine, the rhythm of the adjustment of the power of the generator set by each cylinder of the steam turbine is not consistent, which makes the generator set participate in the primary frequency regulation process of the power grid. Insufficient adjustment amount and unstable adjustment process

Method used

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  • A large-scale steam turbine volumetric time constant test system and its test method
  • A large-scale steam turbine volumetric time constant test system and its test method
  • A large-scale steam turbine volumetric time constant test system and its test method

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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the examples of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0043] see figure 2 with image 3 , a large-scale steam turbine volume time constant test system, including a switch button 20, a measuring device 29, a data acquisition module 28, a test function module 21, an actuator 18, a load command module 19 and a steam turbine generator set 30, the measuring device 29 It is electrically connected with the data acquisition module 28 and connected with the steam turbine generator set 30, and the steam turbine generator set...

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Abstract

The invention belongs to the technical field of power grid stability analysis of a power system, and particularly relates to a system and method for testing a volume time constant of a large steam turbine. The system mainly comprises steam turbine governor valves, a main steam pressure transmitter, a governing stage pressure transmitter, an intermediate pressure cylinder steam inlet pressure transmitter, a low pressure cylinder steam inlet pressure transmitter, a displacement sensor and other measuring devices, a data acquisition module, and parallel experiment function modules additionally arranged in the load command link in control logic. Through testing and data analysis of signals for reflecting the steam turbine volume time constant, the accurate steam turbine volume time constant can be acquired, the reliability of a steam turbine speed governing system simulation model and the accuracy of model parameters of the model are improved, the steam turbine volume time constant can be comprehensively and quickly measured, and the requirements for stability calculation and analysis of a power grid are met.

Description

technical field [0001] The invention belongs to the technical field of power system grid stability analysis, and in particular relates to a large-scale steam turbine volume time constant test system and a test method thereof. Background technique [0002] In order to maintain the stability of the power grid, the steam turbine generator set that supplies power to the grid needs to have frequency regulation capabilities. When the grid frequency changes, the generator set immediately reverses the power of the unit through the steam turbine speed control system to achieve the purpose of stabilizing the grid frequency. A large steam turbine refers to a steam turbine generator set with a reheat cycle of more than 200MW. The steam turbine is composed of one high and medium pressure combined cylinder (or one high pressure combined cylinder, one medium pressure cylinder), and one or two low pressure cylinders, such as figure 1 As shown, the main steam from the boiler enters the high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 文立斌
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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