System Considerations and Impacts of AC Cable Networks on Weak High Voltage Transmission Networks

Building new transmission facilities are becoming more difficult due to political and environmental pressures from the public and government. New transmission circuits are required to be built underground as far as possible to minimize visual and electromagnetic filed impacts on the communities in close vicinity of the new transmission facility. Several utilities are faced with challenges to interconnect large cable transmission networks to weak AC networks due to these reasons. This paper investigates system impacts and provides possible mitigation solutions to low-order resonances in cable networks with high percentage AC cables