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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
