Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

1. Main Factors Affecting the Space Utilization Rate and Operation and Maintenance Convenience of Prefabricated Cabins for Secondary Equipment1.1 Degree of Development and Perfection of Front-wiring Protection DevicesThe influence of front-wiring protection devices on the application of prefabricated cabins mainly focuses on three aspects: the layout of the switchgear cabinets, the form of cabin combination in the prefabricated cabin, and the workload of on-site construction. When the developmen

1. IntroductionCurrently, with the rapid development of the economy and science and technology, and the increasing intelligence of the informatization level, the construction of substations is also becoming more and more intelligent. Among them, cable tunnels are an important means for substations to achieve intelligence. Therefore, in practical applications, higher technical and quality requirements are needed. For example, to meet the needs of complex signal transmission, the cable tunnels in

1. Container Scheme1.1 Structural SchemeIn the container structural scheme, the container is mainly constructed from steel plates, steel beams, steel columns, corner fittings, etc. The container structure is an integrated structure formed by combining steel plates and a frame. Based on the single - layer layout of the container, finite - element software is used to establish the container structure model, and then the building load of the container structure is simulated and calculated. The calc

Currently, most secondary equipment in newly - built intelligent substations is placed inside prefabricated cabins located in the switchgear area. After the cabin bodies are manufactured, secondary equipment manufacturers enter the cabins for installation and debugging, resulting in a rather complex and cumbersome construction process. A typical 220 kV intelligent substation usually requires the setup of two prefabricated cabins: one for 220 kV and one for 110 kV. Both cabins are of Type II, wit

IntroductionWith the rapid development of technologies such as cloud computing and big data, and the accelerating penetration of "Internet +" into various industries, the digital economy industry is booming in major countries and regions around the world. It occupies an increasingly important position in daily life and the national economy. Especially under the current impact of the COVID - 19 pandemic globally, the downward trend of the world economy is intensifying. Only the digital economy ha

At present, in order to rationally enhance the efficiency and effectiveness of the engineering construction phase, deeply apply various design achievements in the application phase, promote the concept of full lifecycle management, comprehensively apply various new modern technologies, establish a unified and centralized equipment management interface, and improve the efficiency of intensive engineering in the design and construction stages, State Grid Corporation of China has started to impleme

With the accelerated construction of smart cities, the urban distribution network is constantly being upgraded and renovated, and the construction of overhead line undergrounding projects is also progressing steadily. A large number of 10 kV overhead lines are being replaced by underground cables. Considering the current situation such as limited space on some urban roads and a shortage of equipment installation locations, higher requirements are placed on the volume, structure, and performance

With the continuous growth of electricity demand and the increasing complexity of power systems, the operating environment and load that substation equipment faces are becoming more and more intricate. This has led to higher requirements for maintenance work. The primary objective of maintenance work is to ensure that the equipment operates in good condition through inspection, maintenance, and repair, and to prevent and eliminate potential faults that may affect the power supply. Currently, the

Substations are critical facilities in power systems used for voltage transformation, power distribution, and controlling the flow of electricity. Their primary functions include:Voltage TransformationSubstations use transformers to convert high voltage electricity to lower voltages, or vice versa, to meet the needs of different users and equipment.Power DistributionSubstations transmit electricity from power plants to various consumption areas, ensuring a stable and reliable power supply.Power

A substation is a crucial component of the power system, responsible for converting high-voltage electricity generated at power plants into voltages suitable for transmission and distribution. During the design and construction of a substation, the earliest installed equipment is typically aimed at ensuring the safety and smooth progress of subsequent construction and commissioning. Below are the key pieces of equipment that are installed first in a substation:1. Earthing System Importance: The