Beyond Higher-Pulse Rectification: Operational Harmonic Coordination in Renewable P2H Systems
Abstract
Thyristor rectifiers (TRs) are cost-effective electrolysis power supplies for renewable power-to-hydrogen (ReP2H) systems, but their harmonics may violate grid-code limits. In contrast to conventional solutions that rely on higher-pulse (such as 24-pulse) rectifiers, this paper proposes an operational harmonic coordination scheme that enables low-cost 12-pulse TRs to meet harmonic requirements through coordinated operation. First, a harmonic model quantifies the effects of rectifier transformer (RCT) tap positions and electrolytic currents, enabling harmonic cancellation among multiple electrolyzers (ELZs). A two-layer framework then coordinates hydrogen production and harmonic mitigation. Hourly scheduling determines ELZ commitment within the harmonic feasible region under renewable uncertainty using stochastic programming and a modified progressive hedging algorithm, while minute-level dispatch tracks renewable power and mitigates harmonics. A decomposition algorithm separates production dispatch from harmonic mitigation to improve computational efficiency. Case studies based on real-life projects show that the proposed method increases profit by 31% over current-only regulation. Annual simulations further show that coordinated 12-pulse TRs can replace 24-pulse rectifiers for harmonic compliance by exchanging additional RCT tap actions for lower transformer investment, reducing rectification-stage cost by 37.5%.
Related
- Comparing Socially-Equitable Renewable Energy Budget Allocation MDP Policies in Mature and Emerging Economies
- On the Optimal Co-location of Data Centers with Renewable Energy Sources in SIDS
- Renewable Online Expectile Regression for Heterogeneous Streaming Data with Abnormal Batches
- Zero-Shot Cross-Topology Generalization for DC Power Flow in Grids with High Renewable Penetration
- Renewable model averaging for generalized linear models
BibTeX
@misc{zeng2026beyond,
title = {{Beyond Higher-Pulse Rectification: Operational Harmonic Coordination in Renewable P2H Systems}},
author = {Yangjun Zeng and Yiwei Qiu and Jie Zhu and Yi Zhou and Tao Wu and Xin Meng and Shi Chen and Buxiang Zhou and Kaigui Xie},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.03531},
eprint = {2609.03531},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.03531},
}
RIS
TY - UNPB
TI - Beyond Higher-Pulse Rectification: Operational Harmonic Coordination in Renewable P2H Systems
AU - Yangjun Zeng
AU - Yiwei Qiu
AU - Jie Zhu
AU - Yi Zhou
AU - Tao Wu
AU - Xin Meng
AU - Shi Chen
AU - Buxiang Zhou
AU - Kaigui Xie
PY - 2026
DA - 2026/09/03
PB - arXiv
DO - 10.48550/arxiv.2609.03531
UR - https://arxiv.org/abs/2609.03531
AB - Thyristor rectifiers (TRs) are cost-effective electrolysis power supplies for renewable power-to-hydrogen (ReP2H) systems, but their harmonics may violate grid-code limits. In contrast to conventional solutions that rely on higher-pulse (such as 24-pulse) rectifiers, this paper proposes an operational harmonic coordination scheme that enables low-cost 12-pulse TRs to meet harmonic requirements through coordinated operation. First, a harmonic model quantifies the effects of rectifier transformer (RCT) tap positions and electrolytic currents, enabling harmonic cancellation among multiple electrolyzers (ELZs). A two-layer framework then coordinates hydrogen production and harmonic mitigation. Hourly scheduling determines ELZ commitment within the harmonic feasible region under renewable uncertainty using stochastic programming and a modified progressive hedging algorithm, while minute-level dispatch tracks renewable power and mitigates harmonics. A decomposition algorithm separates production dispatch from harmonic mitigation to improve computational efficiency. Case studies based on real-life projects show that the proposed method increases profit by 31% over current-only regulation. Annual simulations further show that coordinated 12-pulse TRs can replace 24-pulse rectifiers for harmonic compliance by exchanging additional RCT tap actions for lower transformer investment, reducing rectification-stage cost by 37.5%.
ER -