Zhejiang Hongyan Electric Co., Ltd. 
Project Conditions
The substation supplied a mix of conventional and nonlinear loads, creating changing reactive demand and harmonic stress at the common bus. The upgrade required improved voltage support without introducing resonance or unnecessary switching operations.
Engineering Scope
- Reviewed the single-line diagram, short-circuit capacity, load profile and harmonic spectrum.
- Selected dynamic compensation and filtering duties around measured network conditions.
- Coordinated protection, communication and installation interfaces with the existing substation.
Project Outcome
The upgraded configuration improved reactive power response and reduced harmonic exposure for critical distribution equipment, giving the operating team a more stable and reviewable power-quality strategy.
