1. Process-based management of standard formulation, for new《Power quality monitoringAfter the promulgation of the "General Requirements for Equipment" in 2006, a large number of power supply enterprise customers visited, 80% of which stated that they would not follow this standard when planning power quality monitoring systems, reflecting the lack of extensive, scientific research and information collection during project initiation and implementation. The reason for this situation is the lack of management processes for standard development.

2. At present, the operation of standardization work mainly relies on the experience and some simple common sense of some professionals, without paying attention to processes and systems. The formulation of standards often depends on the personal experience and inertia of some professionals, as well as the influence of some manufacturers. From the perspective of process management, standardized management should establish basic processes and norms.

3. Based on reference to relevant international standards, combined with China's actual development level and experience, some published standards will be modified and supplemented. For example, the current "Harmonics in Public Power Grids of Electric Energy Quality" (GB/T14549-93) can discuss how to refine the harmonic limits of various levels of voltage in the power grid, the regulations on inter harmonic limits and their measurement, and how to measure harmonics in different changing states.

4. The standard "Allowable Deviation of Power System Frequency for Power Quality" stipulates that the allowable value of normal frequency deviation for power systems is ± 0.2Hz. When the capacity of the power quality monitoring system is small, the deviation value can be relaxed to ± 0.5Hz. But the standard does not specify the limits of system capacity size. There is no clear regulation on the data statistics method in the standard "Allowable Deviation of Power Supply Voltage for Power Quality".

5. We should conduct project analysis and research on new concepts of contemporary power quality in order to develop new national standards for power quality monitoring. For example, voltage drop, voltage oscillation, voltage waveform gap, signal voltage, etc. stay