Automatic power generation control data acquisition system

Abstract

The invention provides an automatic power generation control data acquisition system which comprises a generator terminal voltage transformer, a generator terminal current transformer, a generator forsupplying power, a unit intelligent transmitting device, an RTU intelligent transmitting device, a dispatching master station, an RTU, an AGC unit, a power plant DCS and a speed regulation system. The voltage of the RTU intelligent transmitting device and the voltage of the unit intelligent transmitting device are both taken from the generator terminal voltage transformer, the current of the unitintelligent transmitting device is taken from the generator terminal current transformer, the current of the RTU intelligent transmitting device is taken from the output end of the unit intelligent transmitting device, and the output end of the unit intelligent transmitting device is further connected with the power plant DCS. The RTU intelligent transmitting device is connected with the RTU, theoutput end of the RTU is electrically connected with the AGC unit, the power plant DCS and the speed regulation system in sequence, and the RTU is connected with the dispatching master station. Two-way input is adopted for dispatching data transmission and acquisition equipment so that high reliability and transient characteristics are achieved, power grid load adjustment is more sensitive, and operation is more reliable and stable.

Description

Technical field[0001]The present invention belongs to the field of data acquisition technology of thermal power plants, and is specifically related to a data acquisition system for automatic power generation control.Background technique[0002]Automatic power generation control (AGC, Automatic Generation Control) is one of the paid auxiliary services provided by the grid power plant. In the prescribed cost-adjustment range, track the command issued by the power dispatching trading institution, and adjust the power generation in real time according to certain regulation. Out force to meet the service of the power system frequency and the power control requirements. Ensure that power generation and load balancing, guarantee the system frequency is the rated value, so that the net area contact line is equal, the minimum regionalization cost,[0003]The AGC load instruction of the scheduled master is based on the data collected by the factory-end high terminal device (RTU, Remote Terminal U...

AI Technical Summary

Problems solved by technology

[0004] In recent years, all provincial power grid-connected units have been put into operation, and the active power telemetry data uploaded to the dispatching side control is still configured with an AC sampling device that was originally only used for monitoring. And the accuracy is not high, which affects the adjustment speed and accuracy of AGC, and poses a threat to the safe operation of the power grid

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