Power and energy analysis is the process of monitoring and analyzing the power quality in the power system, aiming to evaluate the stability, reliability and efficiency of the power system. Through real-time monitoring and analysis of power parameters, power quality problems can be found in time, and the operating efficiency and reliability of the power system can be improved. This article will discuss the relevant standards, methods and importance of power and energy analysis.

1. Standards and specifications

when conducting power and energy analysis, the following relevant standards and codes are usually referred:

• IEC 61000-4-30 Class A: This is the standard on power quality monitoring issued by the International Electrotechnical Commission (IEC), which defines the monitoring methods and requirements of power parameters, including voltage, current, frequency, power factor and other parameters.

• IEC 61400-21/12: This is a standard issued by IEC on the power quality measurement of wind turbines, which aims to evaluate the power quality and performance of wind power systems.

• International Power Generation and Supply Union the International Electrotechnical Commission (IEC) has issued a number of standards on power quality monitoring and analysis, providing a unified standard and requirements for the power industry.

• ITIC curve: ITIC curve is a standard curve about the instantaneous overload tolerance of the power system, which is used to evaluate the overload tolerance of power equipment in a short time.

• EN61000-3-X,EN61000-2-4: This is a standard on electromagnetic compatibility issued by the European Standards Committee (European Standardization Committee,EN), including electromagnetic interference limits and test methods.

2. Methods and tools

when performing power and energy analysis, the following methods and tools are usually used:

• real-time monitoring: Through the installation of power monitors and other equipment, real-time monitoring of changes in power parameters, including voltage, current, frequency, power and other parameters.

• Data logging: Record and store the monitored electric energy data for subsequent analysis and evaluation, identify potential problems and make improvements.

• Data analysis use professional power analysis software to analyze the monitored data, evaluate power quality, identify problems and optimize power system performance.

• Report Generation: Generate power and electric energy analysis reports based on the analysis results, summarize problems and suggestions, and provide a basis for the improvement and optimization of the power system.

3. Importance

power and energy analysis for the protection of power systems. normal operation and improve power quality is essential. Through real-time monitoring and analysis of power parameters, power quality problems can be found and handled in time, reducing power system failures and accidents, and improving system reliability and stability. At the same time, power and energy analysis can also help optimize the operating efficiency of the power system, reduce energy consumption and costs, and improve the overall performance of the power system.

Power and energy analysis is an important means to ensure the stability and reliability of power system. By following relevant standards and specifications and adopting appropriate methods and tools for power and energy analysis, problems can be found and dealt with in time to improve power quality and system performance.