Critical components in power transmission networks
High-voltage series power capacitors are designed for 50 Hz and 60 Hz AC power systems and are primarily used to increase power transmission capacity, enhance system stability, improve voltage regulation, and optimize overall grid performance. These capacitors play a critical role in modern transmission networks by reducing transmission reactance and supporting efficient long-distance power transfer.
Engineered for demanding utility and industrial applications, series capacitors help improve the reliability and operational efficiency of high-voltage transmission systems.
Optimized for power transmission systems
Series power capacitors are widely used in electrical networks to improve transmission performance and strengthen grid stability under varying load conditions. By compensating line reactance, they enable higher power transfer capability while minimizing voltage drops and transmission losses.
Typical applications include:
- High-voltage transmission networks
- Utility substations
- Long-distance power transmission systems
- Grid stability and voltage regulation projects
- Reactive power compensation systems
Compliance with international standards
The capacitors are designed and manufactured in accordance with internationally recognized standards to ensure reliable operation, electrical safety, and long-term durability.
Key standards and specifications
- GB/T6115.1 – Series Capacitors for Power Systems: General
- GB/T6115.2 – Series Capacitors for Power Systems
- GB/T6115.3 – Internal Fuse Requirements
- GB/T311.1 – Insulation Coordination: Definitions, Principles and Rules
- JB/T7114 – Insulation Coordination Standards
- IEC 60143-1 – Series Capacitors for Power Systems: General
- IEC 60143-2 – Protective Equipment for Series Capacitor Banks
- IEC 60143-3 – Internal Fuses for Series Capacitors
Advanced electrical performance
High insulation strength
The capacitor insulation system is designed for dependable performance under high-voltage operating conditions.
- DC test voltage complies with GB/T6115.1 requirements
- Capable of withstanding a DC voltage of 1.7Ulim, but not less than 4.3UN for 10 seconds
Reliable insulation coordination
The insulation level is designed to meet:
- ≥ Ulpf × n/s or 2.5 × UN × n
This ensures safe and stable operation within high-voltage transmission environments.
Accurate capacitance tolerance
The capacitance deviation is maintained within:
- -2% to +3%
This tight tolerance supports stable and predictable system performance.
Low dielectric loss
The capacitors feature very low dielectric loss characteristics:
- tanδ ≤ 0.02%
Low dielectric loss contributes to higher efficiency, reduced heat generation, and improved long-term reliability.
Built for stability and long-term reliability
Manufactured with advanced materials, precision production processes, and strict quality control, high-voltage series power capacitors are designed for continuous operation in demanding power transmission applications. Their robust construction and stable electrical performance help utilities and industrial operators improve transmission efficiency, increase grid reliability, and support the growing demands of modern energy infrastructure.
