Electric precipitation electric field fault discrimination and emergency processing method

Abstract

The invention discloses an electric precipitation electric field fault judgment and emergency treatment method. The method comprises the steps that a high-frequency power supply is carried on a first electric field to operate; carrying the pulse power supply on a second electric field for operation; when the first electric field has the fault that the dedusting index does not reach the standard, disconnecting the pulse power supply from the second electric field, and carrying the high-frequency power supply on the second electric field for operation; judging whether the second electric field can operate normally; if the second electric field can operate normally, determining that the fault reason is abnormal of the first electric field; and if the second electric field cannot operate normally, determining that the fault reason is high-frequency power supply abnormity. When the first electric field breaks down, the high-frequency power supply is carried on the second electric field for operation, and after maintenance is completed, the original state is returned. By adopting the method disclosed by the invention, the reason for the substandard dust removal index of the first electric field can be quickly judged, and the first electric field with the fault is maintained on the premise of not influencing the load of the unit.

Description

technical field [0001] The present application relates to the technical field of electric dust removal by electric field, in particular to a method for identifying and emergency treatment of electric field faults of electric dust removal. Background technique [0002] At present, most thermal power plants use a combination of high-frequency power supply and pulse power supply to operate the electric dust removal. The electric field carried by the high-frequency power supply undertakes nearly 87% of the dust removal tasks for each unit. The purpose of the pulse power supply is to remove fine dust particles and reduce power consumption. Low, but the efficiency is also very low, only 13% of the dust removal capacity. The electric field strength of the pulse power supply is low, resulting in lower dust removal efficiency, but the electric field works well inside. In the case of a sudden increase in the spark rate of the electric field carried by the high-frequency power supply,...

AI Technical Summary

Problems solved by technology

[0002] At present, most thermal power plants use a combination of high-frequency power supply and pulse power supply to operate the electric dust removal. The electric field carried by the high-frequency power supply undertakes nearly 87% of the dust removal tasks for each unit. The purpose of the pulse power supply is to remove fine dust particles and reduce power consumption. Low, but the efficiency is also very low, accounting for only 13% of the dust removal capacity

The electric field strength of the pulse power supply is low, resulting in lower dust removal efficiency, but the electric field works well inside

In the case of a sudden increase in the spark rate of the electric field carried by the high-frequency power supply, the spark rate has exceeded the standard when the secondary current is low, and effective dust removal cannot be achieved. There are two main reasons for the failure: 1. Power failure; 2. Internal failure of the electric dust removal field

However, the cause of the two failures cannot be accurately judged

When it is judged that there is a fault inside the electric field equipped with the high-frequency power supply, it is necessary to wait for the unit to stop before processing the fault. Since the high-frequency power supply has a high proportion of dust removal, once a certain electric field is out of operation, the complex internal structure of the field will take a long time to process, which will affect the unit. load

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