Total Transfer Capability Assessment of Multi-Infeed HVDC Links Considering Frequency Stability Requirements

Total transfer capability (TTC) is an important security index for the daily scheduling and operation of multi-infeed HVDC links. With the massive infeed of HVDC links, a huge power shortage will occur in the receiving grid following the worst case HVDC bi-pole blocking. In this case, the frequency...

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Bibliographic Details
Published in2020 12th IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) pp. 1 - 5
Main Authors Wang, Shiqian, Yuan, Peng, Jiang, Xiaoliang, Yu, Linlin, Deng, Buqing, Wen, Yunfeng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2020
Subjects
Conferences
frequency stability
HVDC
HVDC transmission
Load shedding
Planning
Power system stability
receiving grid
Security
Stability criteria
Total transfer capability
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Summary:Total transfer capability (TTC) is an important security index for the daily scheduling and operation of multi-infeed HVDC links. With the massive infeed of HVDC links, a huge power shortage will occur in the receiving grid following the worst case HVDC bi-pole blocking. In this case, the frequency of the receiving grid will drop sharply, and even causes excessive amounts of load shedding. To mitigate this operating risk, a novel method for TTC assessment of multi-infeed HVDC links is proposed in this paper. Firstly, an optimization-based TTC evaluation model is built by explicitly considering frequency stability requirements of the multiHVDC infeed system, in which synergistic under-frequency arrest strategies are taken into account to deal with the worstcase HVDC bi-pole blocking. Then, an analytical target cascading (ATC) based algorithm is developed to solve this problem. Case study on the modified RTS-79 system demonstrates the effectiveness of the proposed method.
DOI:10.1109/APPEEC48164.2020.9220561