Bug Fixes
- Transient Stability: In VHVDC_A1, fixed bug with handling the DC chopper for the Islanded mode.
- Transient Stability: In VHVDC_A1, modified so KVdc2CH will always use the negative of the absolute value of the parameter.
- Transient Stability: In VHVDC_A1, do not allow TId1f and TId2f to be zero.