kstich
Electrical
- Sep 17, 2003
- 2
Hello,
Our company has recently started using CYME PSAF (version 2.64) for our power analysis. As a large Pulp and Paper Mill we have a decent sized electrical grid. Our power system uses both 60Hz power generated on site and imported as well as an older 50 Hz system generating power onsite. We have a 20MVA Frequency Converter (FC) to exchange power between the grids.
What I am having a problem with is a stability model for the FC is not available for PSAF, and would have to be created. It is a dual generator FC that starts on the 50Hz side.
We have tossed around a number of ideas for this model, but have not yet been able to decide on the final model that we will use. Our current top choice is a dual static load model that reads generation/load values on both sides, factors in frequency (higher current draw / more heat dissipation at frequencies lower then rated values) and then distributes the surplus power accordingly.
The pros are implementation of the model and an accurate transfer of power between 50/60 cycle systems. The main cons we have with this option is there are limited functions for acquiring the power generation values during the simulation and the fact that the behaviors of a synchronous machine are neglected by modeling as static loads.
Has anyone worked with CYME software on a similar project? I am curious to hear any ideas that have been implemented for modeling FC's in this, or other, software packages.
Any help would be appreciated, Thanks!
Our company has recently started using CYME PSAF (version 2.64) for our power analysis. As a large Pulp and Paper Mill we have a decent sized electrical grid. Our power system uses both 60Hz power generated on site and imported as well as an older 50 Hz system generating power onsite. We have a 20MVA Frequency Converter (FC) to exchange power between the grids.
What I am having a problem with is a stability model for the FC is not available for PSAF, and would have to be created. It is a dual generator FC that starts on the 50Hz side.
We have tossed around a number of ideas for this model, but have not yet been able to decide on the final model that we will use. Our current top choice is a dual static load model that reads generation/load values on both sides, factors in frequency (higher current draw / more heat dissipation at frequencies lower then rated values) and then distributes the surplus power accordingly.
The pros are implementation of the model and an accurate transfer of power between 50/60 cycle systems. The main cons we have with this option is there are limited functions for acquiring the power generation values during the simulation and the fact that the behaviors of a synchronous machine are neglected by modeling as static loads.
Has anyone worked with CYME software on a similar project? I am curious to hear any ideas that have been implemented for modeling FC's in this, or other, software packages.
Any help would be appreciated, Thanks!