Assessment of Requirements of С37.118 Standard

40 Pages·0.632 MB·English

by  Pokidyshev A.N., Kazakov P.N.

Assessment of Requirements of
С37.118 Standard
A. N. Pokidyshev (Parma), P. N. Kazakov (RTSoft)
St. Petersburg 2011
Assessment of Requirements of С37.118 Standard
Aims of the Report are to…
• demonstrate why standardized PMU instruments of different
manufacturers provide different readings in the course of parallel
dynamic signal tests;
• propose revisions to the Standard to ensure uniformity of
measurements;
• warn of informativity limitations of synchrophasors when used for
assessment of signals in power grids.
Assessment of Requirements of С37.118 Standard
Issues to discuss…
• Brief overview of the standard.
• In-depth assessment of requirements of the Standard applicable to
measurements, namely:
- issues that have not been addressed by the Standard to the
present day;
- revisions to the Standard required;
- results that are necessary to define sufficient requirements to
measurements of dynamic signals.
• Informativity limitations of synchrophasors.
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Necessity of compensation of group delay
Figure C.1—Frequency step test phase response without Figure C.2—Frequency step test phase response after
group delay compensation group delay compensation (Ideal+3 algorithms,
corresponding to Figure C.1)
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Scope of testing
Assessment of Requirements of С37.118 Standard
Brief overview of the Standard
Step excitation tests