Real-time closed-loop automatic control method for power transformer

Abstract

The invention discloses a real-time closed-loop automatic control method for a power transformer, which belongs to the field of automatic control of power systems. The method performs automatic control through a computer program, and comprises a data preparation stage, a theoretical line loss analysis stage and a real-time closed-loop automatic control stage of the power transformer. The method combines the actual operation condition of an electric network to adjust control modes of various substations by monitoring the operation condition of the system, namely for stations with good operation condition, an action command can be sent to control the operation of the power transformer through a computer, adjustment advices of an operation mode of the power transformer can also be provided through the computer, and the operation mode is manually adjusted by dispatchers. The method reduces whole network loss, ensures that the operation of the power transformer is more reasonable, and solves the problem of real-time closed-loop automatic control of the power transformer.

Description

technical field [0001] The invention relates to a real-time closed-loop automatic control method for a power transformer, which belongs to the field of automatic control of electric power systems. Background technique [0002] The statistics of relevant data show that: from power generation, power supply, to electricity consumption, it needs to go through 3 to 5 times of voltage transformation process, which itself will generate active power loss and reactive power consumption. In the generalized power system (including power generation, supply, and power consumption), the total power loss of power transformers accounts for about 10% of the power generation, and about 50% of the power system line loss, while in the rural power system it accounts for about 10%. 60-70%. With the transformation of urban and rural power grids and the gradual development of the power market in China, higher requirements are put forward for the economic operation of power transformers: under the ...

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Problems solved by technology

However, the shortcomings of this method are also obvious. Off-line analysis cannot reflect real-time performance. Electric power workers can only use the calculation results as theoretical analysis of transformer economic operation, which has limited effect on reducing line loss.

[0004] The second method, taking the substation as the unit, the remote signaling and telemetry acquisition device can rely on its own I / O system, integrating data acquisition, calculation and judgment, and the device has a high degree of integration. At the same time, each substation needs to install this set of devices. The amount of maintenance has increased significantly. If more stations are added, corresponding hardware and software equipment need to be added, and the cost is relatively high

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