UPS & Power Quality for 35kV/10kV Switching Stations & Distribution Stations

March 25, 2026 min read

1. Overview

35kV/10kV switching stations and distribution stations are critical nodes for medium-voltage power transmission, distribution, and new energy grid connection. Stable power supply, reliable control & protection, and qualified power quality directly determine grid safety, project economics, and compliance with utility standards.

We provide integrated power protection & power quality solutions for 35kV/10kV stations:

UPS for control & protection systems (relay protection, RTU, automation, metering, communication)

SVG + High-Sense Low-Comp reactive power compensation for PV-connected stations to eliminate power factor penalties and improve grid stability

Our solutions help global customers achieve zero downtime of critical loads, stable power factor, lower energy costs, and long-term safe operation.

2. Application Scenarios & Pain Points

2.1 Core Scenarios: 35kV switching stations & distribution stations; 10kV switching stations & distribution stations; PV grid-connected 35kV/10kV stations; Industrial park & urban network medium-voltage distribution nodes

2.2 Typical Pain Points: Grid outages, voltage dips, or interruptions cause protection device tripping, data loss, and blackouts.; After PV access, active power decreases sharply, leading to low power factor and heavy utility penalties.; Traditional capacitor compensation cannot cover transformer & line reactive power, resulting in persistent low PF on the high-voltage side.; Strong electromagnetic interference, wide temperature swings, and harsh outdoor environments challenge equipment stability.; Slow response, step compensation, and resonance risks in conventional devices affect system safety.

3. Integrated Solution Architecture

3.1 Solution : UPS for 35kV/10kV Station Control & Protection: Relay protection devices; Automation & RTU systems; Fault recorders & data acquisition terminals; Metering & billing systems; Communication equipment & monitoring hosts; Zero-transfer switch (<10ms) for non-stop operation; Wide input voltage range adapts to grid fluctuations; Strong EMI/EMC immunity for medium-voltage station environment; High efficiency (>96%), long design life, low maintenance; Rack-mount / cabinet / floor-standing for flexible deployment; Remote monitoring via SNMP, cloud platform for O&M efficiency

4. Solution Highlights

1. Scenario-tailored

2. Full match to 35kV/10kV station environment, load characteristics, and PV grid-connection rules.

3. Dual core guarantee

4. UPS ensures control system continuity;

5. Economic & efficient

6. High-Sense Low-Comp reduces investment

7. Stable & reliable

8. Wide temperature adaptability, strong anti-interference, long MTBF, suitable for long-term unattended operation.

9. Smart O&M

10. Remote monitoring, fault alarm, data logging, automatic reactive power regulation.

11. International compliance.

5. Application Effects（Reference Case）

Project: 10kV PV-connected industrial station

Before: PF dropped to 0.77; monthly penalty >¥10,000 (or equivalent local currency)

Solution: 200kVar SVG + High-Sense Low-Comp

After:
o Power factor improved to 0.94
o Zero penalty; eligible for power factor incentive
o HV side reactive power stabilized near 0 kvar
o Stable grid connection; reduced line loss; improved system efficiency