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Dyson Knowledge

Focused on the design of electrical equipment, proficient in electrical principles and relevant specifications, and skilled in using design software. From intelligent substations to various types of electrical equipment, I am adept at optimizing design solutions, integrating new technologies. With practical experience and collaborative management capabilities, I deliver outstanding electrical design achievements.

Knowledge

Knowledge

Loss evaluation in transformers based on IEC 60076

I. Definitions of Losses in IEC 6007 IEC 60076-1 (General Requirements) and IEC 60076-7 (Loading Guidelines) specify two core types of losses: No-load Loss (P0) Definition: Losses measured when the primary winding is energized at rated voltage and the secondary winding is open-circuited (dominated b

By Dyson 02/27, 2025
Knowledge

Intelligent switchgear opening and closing time operation acc to IEC 61850

For intelligent switchgear, the opening time is defined as the duration starting from the moment when the first message carrying the trip command (a GOOSE message in accordance with the IEC61850 series) is received through the interface, with the circuit - breaker initially in the closed position, a

By Dyson 03/18, 2025
Knowledge

High Voltage Gas Insulted Switchgear (GIS) Field Testing According to IEEE C37.122

High Voltage Gas Insulted Switchgear (GIS) Field Testing According to IEEE C37.122 The final assembly of the gas - insulated substation (GIS) takes place in the field. This is where all the diverse components that make up the GIS are brought together for the first time. Even if it were possible to f

By Dyson 04/07, 2025
Knowledge

According to the IEEE C37.122 standard, what are the routine tests for high-voltage gas-insulated substations (GIS)?

As required for routine tests of gas-insulated metal-enclosed switchgear, it is necessary to ensure that each equipment unit undergoes systematic routine tests before leaving the factory. These tests (also known as production tests) core on confirming the consistency between the equipment's operatin

By Dyson 04/08, 2025
Knowledge

Connections and working principles of three - phase distribution transformers

Three - Phase Transformers Three - phase power supply can be achieved either by a single three - phase transformer or by interconnecting three single - phase transformers. A single three - phase transformer is more compact in size compared to an equivalent - capacity bank composed of three single -

By Dyson 04/11, 2025
Knowledge

Distribution transformer calculations – MS Excel Spreadsheet

Four Fast Transformer Calculations The distribution transformer calculations spreadsheet enables rapid computations for the following: ascertaining the MV/LV transformer rating, calculating the rating of the overcurrent protection device on the low - voltage side of the transformer, determining the

By Dyson 04/12, 2025
Knowledge

Difference between Power Transformer and Distribution Transformer

Main Differences Power transformers are applied in high - voltage transmission networks for step - up and step - down operations (with voltage levels such as 400 kV, 200 kV, 110 kV, 66 kV, 33 kV). Their rated capacity is generally above 200 MVA. In contrast, distribution transformers are utilized in

By Dyson 04/12, 2025
Knowledge

Placement and rating planning of feeders & transformers for LV/MV distribution networks

Allocation and Sizing of Distribution Transformers and Feeders Distribution network planning is largely characterized by the allocation and sizing of distribution transformers. The location of these transformers directly dictates the length and route of medium - voltage (MV) and low - voltage (LV) f

By Dyson 04/14, 2025
Knowledge

Installation of Distribution-to-Utilization Voltage Transformers

A. Aerial Mounting A1. Unit Capacities, Mounting Methods, and Types For aerial transformer installations, three - phase units or banked single - phase units can be used. Transformers, whether single or in banks, with an individual unit or combined capacity greater than 300 kVA shall not be mounted o

By Dyson 04/14, 2025
Knowledge

Behaviour of Outdoor Vacuum Circuit breakers Under Simulated Environments

Outdoor vacuum circuit breakers are predominantly utilized in the Medium High Voltage (MHV) segment. They serve as a crucial component in the distribution sector, especially within 11kV and 33kV grids. A variety of composite materials are employed in the construction of these breakers. Among them, t

By Dyson 04/17, 2025
Knowledge

Performance characteristics and structural design of outdoor pole-mounted vacuum circuit breakers

From 2009 to 2010, the State Grid was in the pilot phase of the smart grid planning, focusing on developing the strong smart grid development plan, conducting research and development of key technologies, manufacturing equipment, and carrying out pilot projects in various sectors. The period from 20

By Dyson 04/18, 2025
Knowledge

Optimal Design and Promotion and Application of an Outdoor High-Voltage Vacuum Circuit Breaker

The power grid is a crucial foundation and safeguard for modern economic development and social progress. The goal of building a strong and intelligent power grid is to construct a modern power grid system that is safe, environmentally - friendly, efficient, and interactive, to achieve the scientifi

By Dyson 04/19, 2025

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