Electrically meaningful power system test case diagrams (NESTA archive)

This collection of images provides simple test system diagrams for most of the test power systems in the NESTA test case archive (see https://arxiv.org/abs/1411.0359) It can be hard for researchers to visualize data relevant to these networks. These images were created by applying the techniques described in: P. Cuffe; A. Keane, "Visualizing the Electrical Structure of Power Systems," in IEEE Systems Journal, 2015The "Power Transfer" distance was use to create each diagram (see ibid. Section II. 3) As such, the diagrams are electrically meaningful: loosely speaking, buses drawn in close proximity should be able to transact power with each other with ease.Buses have been labelled as space permits, starting with the highest voltage buses first.