Technical University of Bialystok MSc Jarosław WIATER New MOV element model with hysteresis loop in...

Technical UniversityTechnical Universityofof

BiaBiallystokystok

MSc MSc Jarosław WIATERJarosław WIATER

New MOV element New MOV element model with hysteresis model with hysteresis

loop in ATP/EMTPloop in ATP/EMTP

1. Introduction2. Surge arrester with hysteresis loop3. New model4. Verification5. Conclusions

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

1. Introduction

o ATP/EMTP uses MOA element

o Limitations of MOA

o Hysteresis loop

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

2. Surge arrester with hysteresis loop

8/20s

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

2. Surge arrester with hysteresis loop

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

2. Surge arrester with hysteresis loop

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

o maximum continuous operating voltage Uc=275V

o rated voltage Ur<1500Vo nominal discharge current In=20kAo maximum discharge current Imax=40kA

2. Surge arrester with hysteresis loop

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

3. New model

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

4. Verification

New MOV element model with hysteresis New MOV element model with hysteresis loop in ATPloop in ATP // EMTPEMTP

5. Conclusions

o precisely approximates surge arrester characteristico real MOA V-I characteristic can be directly transferred from o digital measurement to computer simulation programo there is no need to approximate any MOA analog parameterso new model can be also use for any non-linear element with o hysteresis loop in V-I characteristic or not tooo tricky algorithm eliminates oscillation during step parameter changeo it’s easy to improve in future by simple ATP/EMTP user