Application and energy saving analysis of high frequency power supply in electrostatic precipitator

2016-05-26 17:12:32

Abstract:
With the continuous development of economy, the problem of environmental pollution has become more and more serious, which affects people's living environment, but also limits the further development of economy. China attaches great importance to environmental issues, the various industries in the energy saving and emission reduction of new technology research and promotion has made great progress.
Power supply is an important part of electric dust removal equipment, using high frequency power supply can greatly enhance work efficiency of dust removal equipment, also can effectively save the electrical energy, so in electric power, metallurgy, chemical industry and other multiple production areas get widely used.
key word：
High frequency power supply; electrostatic precipitator; energy saving
1 Overview
Economic development brings the harm to the environment by the widespread attention in the world, China is in the high speed of economic development, and also faces the problem of environmental pollution. In order to protect the environment and realize the sustainable development of economy, the energy saving and emission reduction for each industry in our country is the central task, and the new technology of promoting energy saving and emission reduction can be promoted. Electric dust collector is the soot emission control of major equipment for thermal power plant, coal-fired boiler enterprise, the core device of the equipment is the power, for dust removal work provides the voltage required, has a direct impact on the dust removal efficiency.
2 high frequency power supply of high frequency high voltage switch power supply (referred to as high frequency power supply) is a new generation of electrostatic precipitator power supply device can be widely used in electric power, metallurgy, chemical, cement and other industry flue dust control, to achieve efficient dust dust,
The role of environmental protection.
2.1 working principle of high frequency power supply
High frequency power supply of electric dust collector is formed by high frequency switching technique of inverter power supply, the supply current is by a series of narrow pulse, can to esp from close to the pure DC to pulse amplitude with a wide range of voltage waveform. High frequency power supply has fast reaction mechanism for electric dust discharge or short circuit.
The power output can be blocked immediately after the occurrence of the above situation, and the dynamic response speed of the power supply is improved. Rapid response mechanism of high frequency power supply for the power to achieve nearly pure DC output, improve power supply voltage of the device, is conducive to the increase of electrical precipitator field strength and dust charge, and the influence of the electric field force around the electric precipitator dust, improving the moving speed of the dust, the final realization of the dust removal efficiency is increased, reducing soot emissions, environmental protection.
2.2 operation mode of high frequency power supply
The high frequency power supply can adjust the pulse width, the pulse amplitude and the power supply frequency according to the actual working condition of the electric dust collector, so as to ensure the supply voltage and the current to be optimized. For the two types of high frequency power supply with constant cycle power supply and pulse power supply, the appropriate power supply mode should be selected according to the requirement of dust removal.
2.2.1
Constant cycle power supply mode.
Constant cycle power supply mode, is the high frequency power supply in accordance with the preset frequency parameters to run, set the frequency parameter values determine the output voltage and output current value of the device. The requirement of the operator is higher, and the power consumption of the equipment is large,
Therefore, the energy consumption is large, and the dust removal effect is not ideal, when the coal quality, compliance, flue gas and other large changes occur, the constant cycle of power supply can not meet the requirements of electric dust collector.
2.2.2 pulse power supply mode
High frequency power supply in the pulse power supply mode, can output by a series of pulse high energy and low energy pulse consisting of electrical energy, the waveform of the output current waveform and the regulars similar. High frequency power supply adopts pulse power supply mode, esp provides higher peak voltage, which can effectively overcome the high specific resistance induced by anti corona, so as to improve the dust removing effect of the equipment, reduce the electric field in the ineffective power consumption, and ultimately to achieve the purpose of energy saving and environmental protection. This is traditional high voltage power supply can not match advantage. So it has been widely used.
Application and energy saving analysis of high frequency power supply in electrostatic precipitator
Zhang Xuetao Wang Wei Chen Chongrong He Ligang
Zhejiang Feida environmental Polytron Technologies Inc
Hangzhou Zhejiang 310018
Abstract:
With the continuous development of economy, the problem of environmental pollution has become more and more serious, which affects people's living environment, but also limits the further development of economy. China attaches great importance to environmental issues, the various industries in the energy saving and emission reduction of new technology research and promotion has made great progress.
Power supply is an important part of electric dust removal equipment, using high frequency power supply can greatly enhance work efficiency of dust removal equipment, also can effectively save the electrical energy, so in electric power, metallurgy, chemical industry and other multiple production areas get widely used.
key word：
High frequency power supply; electrostatic precipitator; energy saving
1 Overview
Economic development brings the harm to the environment by the widespread attention in the world, China is in the high speed of economic development, and also faces the problem of environmental pollution. In order to protect the environment and realize the sustainable development of economy, the energy saving and emission reduction for each industry in our country is the central task, and the new technology of promoting energy saving and emission reduction can be promoted. Electric dust collector is the soot emission control of major equipment for thermal power plant, coal-fired boiler enterprise, the core device of the equipment is the power, for dust removal work provides the voltage required, has a direct impact on the dust removal efficiency.
2 high frequency power supply of high frequency high voltage switch power supply (referred to as high frequency power supply) is a new generation of electrostatic precipitator power supply device can be widely used in electric power, metallurgy, chemical, cement and other industry flue dust control, to achieve efficient dust dust,
The role of environmental protection.
2.1 working principle of high frequency power supply
High frequency power supply of electric dust collector is formed by high frequency switching technique of inverter power supply, the supply current is by a series of narrow pulse, can to esp from close to the pure DC to pulse amplitude with a wide range of voltage waveform. High frequency power supply has fast reaction mechanism for electric dust discharge or short circuit.
The power output can be blocked immediately after the occurrence of the above situation, and the dynamic response speed of the power supply is improved. Rapid response mechanism of high frequency power supply for the power to achieve nearly pure DC output, improve power supply voltage of the device, is conducive to the increase of electrical precipitator field strength and dust charge, and the influence of the electric field force around the electric precipitator dust, improving the moving speed of the dust, the final realization of the dust removal efficiency is increased, reducing soot emissions, environmental protection.
2.2 operation mode of high frequency power supply
The high frequency power supply can adjust the pulse width, the pulse amplitude and the power supply frequency according to the actual working condition of the electric dust collector, so as to ensure the supply voltage and the current to be optimized. For the two types of high frequency power supply with constant cycle power supply and pulse power supply, the appropriate power supply mode should be selected according to the requirement of dust removal.
2.2.1
Constant cycle power supply mode.
Constant cycle power supply mode, is the high frequency power supply in accordance with the preset frequency parameters to run, set the frequency parameter values determine the output voltage and output current value of the device. The requirement of the operator is higher, and the power consumption of the equipment is large,
Therefore, the energy consumption is large, and the dust removal effect is not ideal, when the coal quality, compliance, flue gas and other large changes occur, the constant cycle of power supply can not meet the requirements of electric dust collector.
2.2.2 pulse power supply mode
High frequency power supply in the pulse power supply mode, can output by a series of pulse high energy and low energy pulse consisting of electrical energy, the waveform of the output current waveform and the regulars similar. High frequency power supply adopts pulse power supply mode, esp provides higher peak voltage, which can effectively overcome the high specific resistance induced by anti corona, so as to improve the dust removing effect of the equipment, reduce the electric field in the ineffective power consumption, and ultimately to achieve the purpose of energy saving and environmental protection. This is traditional high voltage power supply can not match advantage. So it has been widely used.