English
RFQ

Download the app

Faults and Treatments during the Installation and Debugging of Electrical Equipment in Substations

Edwiin

04/29/2025

The arc chutes serve several key functions:

Arc Convection - Based Motion, Elongation, and Cooling: Facilitate the movement of the arc, extend its length, and dissipate heat through convection.
Arc Compression: Squeeze the arc between the insulating sidewalls, altering its physical characteristics.
Gas - Assisted Arc Cooling: Cool the arc by leveraging the gassing properties of the wall materials.
Arc Segmentation: Split the arc into multiple shorter, series - connected arcs using metal plates.
Arc Length Augmentation: Increase the arc length by employing isolating plates as barriers.

Typically, an arc chute utilizes at least two of these functions in combination.

There are two fundamental types of arc chutes, distinguished mainly by the material of the arc plates:

Metal - Plate Arc Chutes
Insulating - Plate Arc Chutes

Metal - plate arc chutes break the arc into a series of shorter arcs that burn between a set of parallel plates. Steel is commonly used for these metal plates due to its ferromagnetic nature. This property helps attract the arc and keep it confined within the stack of plates. In this type of arc chute, diverging arc runners, which are essentially a pair of specially designed arc horns, initially guide the arc into the plates. Subsequently, the electromagnetic forces generated by the current loop propel the arc deeper into the chute.A schematic diagram of this type of arc chute (Deion chamber) is illustrated in Figure.

Topics

Power Systems Switchgear

Edwiin

Analysis of the Technical Characteristics of Online Monitoring for Medium-Voltage Switchgear Status

Analysis of the Technical Characteristics of Online Monitoring for Medium-Voltage Switchgear Status

With the increasing complexity of power system operation environment and the deepening of power system reform, traditional power grids are accelerating the transformation to smart grids. The goal of equipment condition-based maintenance is achieved through real-time perception of equipment status by new sensors, reliable communication via modern network technology, and effective monitoring by background expert systems.I. Analysis of Condition-based Maintenance StrategyCondition-based Maintenance

What is the current application status and development trend of medium-voltage switchgear?

What is the current application status and development trend of medium-voltage switchgear?

With the accelerated automation of power equipment, various medium-voltage switchgear have emerged in the market. Classified by insulation media, they are mainly divided into air-insulated, SF₆ gas-insulated and solid-insulated types, each with its own advantages and disadvantages: solid insulation offers good performance but poor environmental friendliness, SF₆ features excellent arc extinguishing capability but is a greenhouse gas, and air insulation has high cost-performance but larger volume

What components make up the design of medium-voltage ring network distribution switchgear?

What components make up the design of medium-voltage ring network distribution switchgear?

As an expert who has been deeply engaged in the field of power system design for many years, I have always paid attention to the technological evolution and application practice of medium-voltage ring main distribution equipment. As a core electrical device in the secondary distribution link of the power system, the design and performance of such equipment are directly related to the safe and stable operation of the power supply network. The following is a professional analysis of the key design

What aspects should be paid attention to when installing medium-voltage switch cabinets during the initial stage of subway operation?

What aspects should be paid attention to when installing medium-voltage switch cabinets during the initial stage of subway operation?

1. Statistics on Common Faults of Medium-Voltage Switchgear in the Early Operation StageAs project participants, we found during the early operation of a new metro line: 21 sets of power supply equipment were put into use, with a total of 266 accident phenomena in the first year. Among them, 77 faults occurred in medium-voltage switchgear, accounting for 28.9%—significantly higher than faults in other equipment. Statistical analysis shows that major fault types include: protection device s

Source professional electrical partners, experts, and explore smart grid & energy solutions.