An Automatic Monitoring System of Unit Interval Based on Programmable Computer Controller

Abstract

The invention provides an interval automatic monitoring system based on a programmable computer controller unit. The interval automatic monitoring system comprises a programmable controller unit (1), an input signal conditioning unit (2), an output signal conditioning unit (3), a touch screen (22) and an upper computer system (25). A program controlled computer (PCC) unit (1) integrates excitation adjusting (6), speed regulation (7), synchronization (8), sequential control (4) and water machine protection (5). One end of the PCC unit is connected with scene intelligent devices such as a temperature route inspection device (9), a water level measurement and control device (10), a comprehensive electric quantity device (11), a rotational speed measurement device (13) and a generator protection device (12) through a controller area network (CAN) bus, and the other end of the PCC unit communicates with the touch screen (22) and the upper computer (25) through a serial port. The interval automatic monitoring system of a small and medium generator unit is developed towards the directions of miniaturization, instrumentation and integration, has important effects on achieving digitization and intellectualization of a hydropower station, and is mainly used for small and medium hydropower stations.

Description

【Technical field】 [0001] The invention relates to a digitized hydropower station interval automatic monitoring system, in particular adopting a novel programmable computer controller to realize the intelligent monitoring and comprehensive control of the hydroelectric generating units in the interval layer of the hydropower station. 【Background technique】 [0002] The generator set bay control unit, namely the unit local control unit (LCU), is the core unit of the bay layer, the key to ensure the effective and reliable operation of the power station and the safe operation of the unit, and a control unit in the distributed structure of the integrated automation system of the whole plant. node. [0003] The governor, the excitation regulator and the synchronous control device are the main components of the generator set, the core unit of the interval layer of the power plant (often called the local control unit--LCU in China), and one of the distributed structures of the compre...

AI Technical Summary

Problems solved by technology

[0006] The main control unit of the existing domestic bay layer generally uses single-chip microcomputer, single-board computer and PLC as the hardware platform. Recently, PCC is also used as the control unit of the power plant bay layer, but its PLC and PCC are only used as a platform, and each intelligent device They are all discrete devices bought by different manufacturers. On this platform, the local control unit (LCU) is only a combination of various intelligent devices, not comprehensive data acquisition and processing, excitation, speed regulation, quasi-synchronization and sequence control. , temperature patrol, water level measurement and control and other intelligent units are integrated, and a PCC is used to realize the comprehensive control of the interval layer of the unit

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