The composition of the power system, the design of the power system. 1 article amazing makes it clear!

The composition of the power system, the design of the power system

Composition of the power system

The power system consists of the following basic parts:

Generation system: Equipment and systems that convert fossil fuels, hydropower, wind power, solar energy, and other energy into electrical energy.

Transmission system: Equipment and systems used to transmit the high-voltage electric energy generated by power plants to various regions and users.

Transformation system: The high-voltage electric energy transmitted by the transmission system is reduced in voltage through transformers of the power system and transmitted to various substations, and then converted into low-voltage electricity suitable for the electricity needs of ordinary users.

Distribution system: Equipment and systems used to distribute the low-voltage electric energy transmitted by the substation to ordinary users.

User power system: Electrical equipment and systems that ultimately use electricity directly in homes, factories, shops, and other places.

In addition to the above basic parts, the power system also includes various equipment and systems closely related to management, monitoring, protection, safety, and environmental protection, such as power security systems, power metering systems, etc.

In addition, Characteristics of Power Systems including voltage stability, smart grid, and other emerging technologies are gradually being widely applied to power systems, providing new directions and innovations for improving the reliability and stability of power systems.

In summary, the power system is a complete system composed of multiple parts, which are interconnected and supportive of each other, and together constitute an important part of the power system.

Design of Power System

The design of the power system refers to the selection of appropriate transmission lines, transformers, switchgear, and other electrical equipment according to different power demands, as well as the calculation of various parameters of electrical transmission and transformation, to achieve stable and reliable operation of the power system and ensure the normal power demand of users.

The following briefly introduces the main process of power system design:

System requirements analysis: understand the variables and conditions required for operation, and design and select the initial plan.

System concept design: based on customer needs and user power consumption, preliminary design, layout, and analysis of voltage level, power supply mode, substation configuration, and distance, distribution, and wiring are carried out.

The power system requires regular maintenance checks
The power system requires regular maintenance checks

System detailed design: further optimize and accurately locate the conceptual design, formulate detailed electrical equipment layout plan, equipment parameters and selection, switch equipment and protection design, line tower design, equipment wiring, and other details to achieve more accurate circuit and control functions.

Construction and commissioning: construct electrical equipment, switchgear, line structure, etc. according to the design plan, configure sufficient safety facilities, ensure construction quality, debug various parameters, and ensure that electrical equipment and its supporting systems maintain long-term operation safely, stably, and healthily.

Operation and maintenance: qualified operation and maintenance personnel shall carry out the operation, commissioning, and maintenance of the power system according to the operation management regulations, pay attention to predicting and preventing equipment failures, and carry out timely inspection and maintenance to avoid affecting the normal power demand of users.

According to the needs of the power system, the design needs to calculate parameters such as current, voltage, power, impedance, etc., and should select appropriate electrical equipment according to the actual application situation, build equipment according to the design process, configure protection facilities, and carry out commissioning and maintenance, etc., to ensure the efficient, stable and safe operation of the power system.

Power system design technical regulations

The power system design technical regulations mainly include the following contents:

System planning and layout: including the overall planning and design of the power system, layout, power distribution, power load positioning analysis, transmission capacity evaluation, etc.

Equipment selection and parameter calculation: selection and parameter calculation of various equipment in the power system, such as transformers, switchboards, switches, cables, etc., to ensure that equipment parameters such as circuit impedance meet the process requirements.

Grounding design: including the design and implementation of grounding schemes such as power grounding and insulation protection to ensure the reliability and safety of the power system.

Architectural and equipment engineering design: including the design and construction requirements of buildings and equipment rooms, wiring operation, safe operation, etc., to ensure that the construction and use of the power system meet the requirements of safety, reliability, and efficiency.

Power quality control and assurance: including the evaluation and control of the interference, harmonics, electromagnetic interference, and other influences that may be generated by the power system to ensure that the requirements of power quality are met.

Transportation safety design: including prevention and inspection measures for problems encountered in power transmission and transformation line safety, earthquakes, severe weather, etc. These regulations are designed to ensure that the design, construction, operation, and maintenance of the power system meet standards and provide a safe, reliable, and high-quality power supply to meet the different needs of different users and industries. At the same time, following these regulations can also ensure the safety of workers and the public in design and operation.

The power system's stability is crucial for operations
The power system’s stability is crucial for operations

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