Pulverizing system remote control method and pulverizing remote integrated control system
A comprehensive control and pulverizing system technology, which is applied in the field of pulverizing remote integrated control system and pulverizing system remote control, can solve the problems of insufficient layering and dispersion of DCS control system, many cables laid, and complex design, etc., to improve network security The effect of safety, reduced construction amount, and clear functions
Inactive Publication Date: 2016-06-01
HENNAN ELECTRIC POWER SURVEY & DESIGN INST
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to provide a remote control method and remote control system for the pulverizing system. The present invention solves the problems of scattered equipment in the existing pulverizing system, insufficient layering and dispersion of the DCS control system, many laying cables and complex design. question
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[0033] A method for remote control of a milling system according to the present invention comprises the following steps:
[0034] Step 1. Deploy each measuring point of the measurement and control system in the pulverizing system, and connect the measurement output signal circuit of each measurement point of the measurement and control system to the I / O card of the remote integrated control cabinet;
[0035] Step 2. Connect the motor power circuits of the coal mill, coal mill oil station, coal feeder, fan and coal hopper air cannon to the coal mill electric control cabinet unit and coal mill oil station of the remote integrated control system power distribution cabinet respectively Electric control cabinet unit, coal feeder electric control cabinet unit, fan electric control cabinet unit, coal hopper air cannon electric control cabinet unit, connect the motor power circuit of the separator to the separator frequency conversion electric control cabinet;
[0036] Step 3. Connect...
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The invention discloses a pulverizing system remote control method and remote control system. Measurement and motor power loops of a coal feeder, a coal pulverizer and a separator are separated; the measurement output signal loops of all the measurement points of a measurement and control system are accessed to the I / O card of a remote integrated control cabinet; the motor power loops of the coal pulverizer, a coal pulverizer oil station, the coal feeder, a blower and a coal hopper air cannon are respectively accessed to a remote integrated control system power distribution cabinet; the motor power loop of the separator is accessed to a separator variable-frequency electric control cabinet; and a DCS processor performs PID operation according to the demand (feedforward) of pulverized coal feed amount and the pulverized coal online concentration measurement result (feedback), regulates motor rotating speed of the coal feeder, the coal pulverizer and the separator and completes the function of cooperative control of the coal feeder, the coal pulverizer and the separator onsite, and realizes interlocking and protection of the coal feeder and the coal pulverizer so that the principle of the DCS function hierarchical design can be realized. The function of cooperative control and interlocking protection between the coal feeder, the coal pulverizer and the separator can be completed onsite and a complete pulverizing control unit is formed, and high-voltage loops and low-voltage loops are completely separated by adopting the control system so that interference can be avoided.
Description
technical field [0001] The invention relates to the field of electric power automatic control, in particular to a remote control method for a pulverizing system and a remote comprehensive control system for pulverizing. Background technique [0002] The pulverizing system of a coal-fired power plant is a system that provides boiler fuel and is an important system in a power plant. The process of the pulverization system includes: coal is sent from the coal feeder to the coal mill, and after being ground, coal powder is formed, which is separated by the separator, and the small particle coal powder is sent to the boiler burner through the powder pipeline, and the large particle falls back to the mill The coal machine is re-ground. There are many control devices and measuring points attached to the pulverizing system. Each pulverizing system has about 200 measuring points, and each boiler needs about 4 to 8 pulverizing systems. [0003] The existing milling remote integrated...
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IPC IPC(8): G05B19/418
CPCY02P90/02G05B19/41875G05B2219/24024
Inventor 韩卡严迪春李晗
Owner HENNAN ELECTRIC POWER SURVEY & DESIGN INST