Thermal power generating unit coordinated control system energy-saving optimization technique

Abstract

The invention discloses a thermal power generating unit coordinated control system energy-saving optimization technique. Through establishing a boiler optimal oxygen amount control module, deep optimization is performed on a double-inlet double-outlet coal pulverizer dynamic characteristic mathematical model and a coordination control system, wherein the dynamic characteristic mathematical model can supply operation basis for the coordination control system. Through the dynamic characteristic mathematical model, optimization of a load wind baffle plate control system and a thermal energy saving optimization system is facilitated, thereby reducing power consumption rate of a blower and an induced draft fan. Through a sub coordination control system in the coordination control system, optimization control is performed on a self-adaptive algorithm loop, a set load instruction feedforward amount and a pressure decoupling control loop in a boiler master control and main stream pressure control loop, thereby improving control system adjusting quality and performing feedback of a boiler optimal control oxygen amount model. The thermal power generating unit coordinated control system energy-saving optimization technique has advantages of effectively reducing power consumption rate of the blower and the induced draft fan, reducing coal consumption for power generation, improving controlsystem adjusting quality and improving stability and economic performance in operation of the thermal power generating unit.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal-fired power generation, and in particular relates to an energy-saving optimization technology for a thermal power unit coordination control system. 【Background technique】 [0002] In the production and operation management of traditional coal-fired power plants, the measures to reduce unit energy consumption are mainly realized by operating operation adjustments and improving the performance of process system equipment. Optimization, maintenance equipment, and operation adjustment seem to have reached their limit in terms of energy conservation, and energy conservation management has become a huge problem facing coal-fired power plants. With the general construction and operation of high-parameter and large-capacity coal-fired units in China, their automation level is getting higher and higher, but the management of thermal control technology mainly stays in ensuring the accuracy of thermal instrum...

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Problems solved by technology

[0002] In the production and operation management of traditional coal-fired power plants, the measures to reduce unit energy consumption are mainly realized by operating operation adjustments and improving the performance of process system equipment. Optimization, maintenance equipment, and operation adjustment seem to have reached their limits in terms of energy conservation, and energy conservation management has become a huge problem facing coal-fired power plants.

With the general construction and operation of high-parameter and large-capacity coal-fired units in China, their automation level is getting higher and higher, but the management of thermal control technology mainly stays in ensuring the accuracy of thermal instruments, the correct operation of thermal protection, and increasing the investment in automatic adjustment systems. In terms of efficiency, etc., the huge energy-saving effect of thermal control and energy-saving technology is often overlooked

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