Mindanao Approximate Grid Model

Here is your Mindanao Approximate Grid Model.

Mindanao Approximate Grid Model in PowerWorld

In coming up with the Mindanao model, I still followed the procedure I have developed in this post, with the following diversions:

•  The transformers’ rating in this model are assumed, I can’t find any public information on the grid transformer ratings.
•  The transmission lines’ ratings were assumed to be 100 MVA for the 69 kV lines, 215 MVA for the 138 kV lines (consistent with the Visayas modeling) and 300 MVA for the 230 kV lines.
•  There is no publicly available for demand allocation for the Mindanao model. For this approximate model, the load distribution was based on the population of each region (group of provinces) from this Wikipedia page (http://en.wikipedia.org/wiki/Mindanao). I started with having 1200 MW of load and partitioned it per percentage population where the load substations are located.
•  The network configuration was derived using the following data rich public sources:

1.  TDP 2011: Consultation Draft Volume 2 Part 1  (http://www.ngcp.ph/documents/2011_TDP_Volume_2_Part_1_(consultation_draft).pdf) – contains system with detailed provincial boundaries
2.  MINDANAO PUBCON PRESENTATION Volume 1 (Major Network Development)  (http://www.ngcp.ph/documents/Mindanao_PubCon_Presentation_Vol.I_(Major_Network_Development).pdf) – contains significant network expansion specially 230 kV and 138 kV interconnects with given distances.
3. Map of Mindanao grid of yesteryears from Nick Nichols (http://asianenergyadvisors.com/2007/10/29/eyeballing-the-mindanao-disturbance/ ) – a clear figure for the transmission lines’ right-of-way.
4. Pictures of parts of Mindanao single line diagram, somewhat posted in the internet (http://www.cityofwaterfalls-iligancity.com/2012/03/lapocof-bares-root-cause-of-brownouts.html#.UE_Ac41lQUo).

•  The generation profile was derived from “Mindanao Power Situation” (http://www.doe.gov.ph/Mindanao%20Power%20Situation/Mindanao%20Power%20Situation%20-%2013%20April%202012.pdf) – contains the dependable generation capacity for peak and off-peak periods.
•  Another Mindanao generation profile used, specifically the location of the power plants, was again from Nick Nichols’ data at EditGrid (http://www.editgrid.com/user/nicknich3/DOE_List_of_Philippine_Power_Plants.html)
• The branch impedances were derived using the table, from “Probabilistic Transmission Planning” book, in this post except for the line charging which were assumed.
•  I had to massage the shunt compensation and load data (at the radial part of Caraga region) to come up with acceptable level of voltages.

Again, this is an approximate model and does not attempt to replicate what NGCP or WESM is using and the model is developed for educational and research purposes. There is no publicly available Mindanao grid model to benchmark this approximate model.

Again, a big gigantic thanks to PowerWorld for the very user-friendly and very visually attractive tool.

You can download the Mindanao approximate network model here, if you bump into a dead link, please drop me an email.