Advanced SVG & RIP Bushing Solutions for Stable Power Grids
Specializing in HV/LV Bushings, SVG, AHF, and Transformer Components. IEC/IEEE Standard Compliant. Global Delivery.
Advanced SVG and AHF systems deliver clean power, while high-performance RIP bushings ensure lasting insulation. With precision transformer monitoring and comprehensive switch-gear components, we build reliability into every connection — where durability meets innovation in power systems.
Yearning Lasting — Reliable power, lasting protection
About Yearning Lasting
Powering the Future, Built to Last
Yearning Lasting Technology Ltd is a specialized provider of electrical power equipment. We focus on optimizing power quality (SVG/AHF) and supplying critical transformer components. We partner with top-tier ISO-certified manufacturers in China to ensure every product meets strict IEC standards.
Our Core Solutions
1. Power Quality Solutions
We help businesses and grids run cleaner and more efficiently. From harmonic filtering and reactive power compensation to full-scale power quality monitoring systems, our products reduce energy waste, prevent equipment damage, and ensure compliance with modern grid requirements.
2. Electrical Components & Monitoring
Safety and intelligence go hand in hand. Our transformer fiber-optic temperature monitors and switchgear accessories bring precision, durability, and digital visibility to critical assets—enabling predictive maintenance without downtime.
3. High & Low Voltage Bushings & Insulators
When it comes to insulation and reliability under high stress, our RIP dry-type bushings and composite insulators set the industry benchmark. Designed for minimal maintenance and maximum service life, they are the preferred choice for substations, transformers, and overhead lines worldwide.
Our products
Comprehensive Electrical Solutions
For over ten years, we have been a reliable partner to clients worldwide, delivering durable electrical components that keep grids stable and industries running.
HV / UHV Bushings & insulators
Specialized in Resin-Impregnated Paper (RIP) dry-type bushings.
Rating: 40.5kV to 800kV (AC) / ±160kV to ±500kV (DC).
Feature: Oil-free, explosion-proof, and maintenance-free design. Ideal for transformers and GIS applications.
Power Quality Solutions (SVG & AHF)
Specializing in Compact Low Voltage SVG, featuring hard-to-find small capacity modules (10, 15, 20, 25 kvar) for precise, localized compensation.
Versatile Range: From 0.4kV rack/wall-mount units to 35kV High Voltage systems (up to 100Mvar).
Active Harmonic Filter (AHF): Filters 2nd-50th order harmonics with dual DSP+FPGA control.
Performance: 3-Level Topology, response time < 5ms, keeping Power Factor > 0.99.
Transformer Monitoring Components
Fiber-Optic Temperature Controllers for real-time transformer monitoring.
Accuracy: ±1°C accuracy (-40°C to +200°C).
Safety: EMI immune, high-voltage resistant fiber sensors.
Life: Durable quartz fiber ensures maintenance-free operation for the transformer's lifespan.
Genuine Experiences
Expert Reviews on Electric Trading
Yearning Lasting Technology's insights transformed our approach to HV/LV products, enhancing our efficiency and market understanding significantly.
"Managing the electrical systems for a busy shopping center, we faced a critical issue: severe current harmonics were damaging our capacitor banks, leading to frequent failures and safety risks. We turned to Yearning Lasting and installed 600A of their wall-mounted Active Power Filters (APF-150A-4). The compact design was a perfect fit for our limited distribution room space. The results were immediate. Current harmonic distortion (THDi) dropped to under 3%, effectively eliminating the interference. Our system stability is fully restored, and the units have been running flawlessly. It was exactly the solution we needed." — Facility Manager, International Shopping Center
- Alex Chen
"We have sourced HV/LV components from Yearning Lasting for over a year. Their product quality is consistently reliable, and their pricing gives us a real competitive edge in our local market. A trustworthy partner for electrical equipment." — Procurement Manager, Southeast Asia Engineering Firm
-Madam Linda
“Since installing your power compensation system in our complex, our voltage has been much more stable during the summer peak hours. Residents have noticed their air conditioners running more effectively. The system works automatically and quietly, which makes our management job easier. Very pleased with the results!”
- Mr. bawan
Connect with Our Experts Today
Reach out to Yearning Lasting Technology for HV/LV RIP bushing & insulator, HV/LV SVG/AHF, and other electric device spare parts
Blog-Smarter, Faster, Smaller: The Evolution of Reactive Power Compensation.
Development Stages of Reactive Power Compensation Devices
The Evolution of Reactive Power Compensation: From Mechanical Switches to Intelligent Grids The evolution of reactive power compensation technology has progressed alongside the expansion of power systems, changing load characteristics, and advancements in power electronics. Its development can generally be divided into four main stages. Phase 1: Mechanically Switched Static Compensation (Early Days – 1970s) This phase was represented by fixed capacitor banks and mechanically switched reactors/capacitors. Key Devices: Circuit breakers, contactor-controlled shunt capacitor banks, synchronous condensers. Technical Features: Slow response: Reaction time typically ranges from seconds to minutes. Stepwise compensation: Cannot achieve precise, continuous adjustment. Drawbacks: Susceptible to inrush currents and overvoltages during switching. While synchronous condensers allowed smooth adjustment, they were costly, had high losses, and required complex maintenance. Applications: Primarily used for steady-state, centralized compensation in substations or large industrial users to improve long-term average power factor. Phase 2: Power-Electronically Switched Static Compensation (1980s – 1990s) The replacement of mechanical switches with thyristors enabled contactless, fast switching, marking the beginning of the dynamic compensation era. Key Devices: Thyristor-Switched Capacitors (TSC), Thyristor-Controlled Reactors (TCR), and their combination in Static Var Compensators (SVC). Technical Features: Fast response: Improved to the millisecond level. Phase-wise compensation: Enabled suppression of voltage flicker. Capabilities: TCR allowed continuous adjustment of inductive power, enabling smooth compensation across ranges. Applications: Widely adopted for rapidly fluctuating loads such as rolling mills and electric arc furnaces. Phase 3: Converter-Based Dynamic Compensation (2000s – Present) This phase represents a qualitative shift from "switching" to "generating" reactive power, centered on fully controllable power electronic devices (e.g., IGBT) and Pulse Width Modulation (PWM) technology. Key Device: Static Var Generator (SVG, also known as STATCOM). Technical Features: Extremely Fast Response: <1 ms, capable of real-time tracking. Stable Performance: Unaffected by system voltage; delivers rated current even under low-voltage conditions (outperforming SVC). Compact Design: Modular structure allows for easy expansion and flexible installation. Our Solution: Mini SVG (Small Capacity Series) While traditional SVGs are often associated with heavy industry, the technology has evolved to become more compact and accessible. We are proud to introduce our Mini SVG Series designed specifically for commercial and residential applications. Key Specifications & Features: Voltage & Capacity: Optimized for standard 400V systems, available in versatile capacity ratings to match your specific load requirements: 10kvar, 15kvar, 20kvar, and 25kvar. Compact & Silent: Featuring a modular, wall-mount design with low noise operation. It fits easily into small electrical rooms or distribution boxes without occupying valuable floor space. Perfect Applications: The ideal solution for Offices, Hotels, and Residential Communities. Performance: Perfect for managing reactive power in buildings with high densities of LED lighting, elevators, and inverter-driven HVAC systems, ensuring compliance with utility power factor regulations. Phase 4: Intelligent and System-Integrated Compensation (Current & Future Trends) Compensation devices are evolving from standalone units into intelligent grid nodes. Functional Integration: Merging with Active Harmonic Filters (AHF) to form Unified Quality Conditioners (UPQC)—managing reactive power, harmonics, and voltage sags simultaneously. Active Grid Support: Moving from "passive compensation" to "active interaction"—providing voltage support and oscillation damping for renewable energy integration. Digital Intelligence: Deep integration with IoT and AI. Smart algorithms enable proactive compensation, remote monitoring, and fault diagnosis. Component Innovation: Use of Silicon Carbide (SiC) semiconductors and advanced dry-type capacitors to make devices safer, smaller, and more efficient. Summary and Outlook The trajectory of reactive power compensation—from mechanical to electronic, slow to fast, and single-function to system-integrated—mirrors the modernization of our power grids. As we move toward a smarter, cleaner energy future, devices like our SVG and Mini SVG will remain critical infrastructure for ensuring safe and efficient operations across industries and communities.
Why SVG is the Future of Power Quality？
In the world of dynamic reactive power compensation, two technologies dominate: SVC (Static Var Compensator) and SVG (Static Var Generator). While both serve to stabilize voltage and improve power factor, their underlying principles and performance capabilities differ significantly.
Here is a comprehensive breakdown to help you choose the right solution.
1. The Core Principle
SVC (Impedance-Type): It works by adjusting impedance. Think of it as a variable resistor that "passively" absorbs or supplies power.
SVG (Source-Type): It acts as a current source. Utilizing fully controllable IGBTs, it "actively" generates the precise reactive current needed, much like a battery system for reactive power.
2. Response Speed
SVC: Fast (20–40 ms). Good for general grid needs but may lag behind rapid load changes.
SVG: Ultra-Fast (<5 ms). Can respond almost instantaneously to flicker and rapid fluctuations.
3. Performance Under Voltage Dips (Critical Difference)
This is where SVG truly shines.
SVC: Its power drops significantly when system voltage drops (proportional to the square of the voltage). Just when the grid needs support the most, SVC becomes weaker.
SVG: Constant Output. It provides full rated support even if the system voltage drops to 50%, ensuring superior dynamic stability.
4. Harmonics & Clean Power
SVC: Operates with Thyristors that generate significant harmonic noise, often requiring large, expensive external filters.
SVG: Uses high-frequency PWM technology. It is a "Clean Source" with very low inherent harmonics, eliminating the need for complex filtering.
5. Footprint & Installation
SVC: Requires bulky capacitors and reactors. Large footprint.
SVG: Compact & Modular. Occupies only 1/3 of the space of an SVC.Note: This high power density is what makes our Mini SVG (10-25kvar) possible, allowing installation in tight spaces like offices and hotels.
Conclusion: Which One Should You Choose?
SVC remains a valid choice for high-voltage, massive transmission nodes where cost is the primary constraint and ultra-fast response is secondary.
SVG, however, represents the future. For modern applications—especially in renewable energy, data centers, and commercial buildings requiring 400V systems—SVG is the superior choice. Its ability to provide faster, cleaner, and more stable compensation in a compact package outweighs the initial investment difference.
Looking for a compact solution?
Check out our [Mini SVG Series] – High performance in a wall-mount design.
The Future of GIS Connections: Why Dry-Type Bushings Are Replacing Gas-Filled Solutions
At the critical interface where modern power grids connect Gas-Insulated Switchgear (GIS) with external transmission lines, one component is revolutionizing the industry: the Dry-Type GIS Bushing.
Serving as the essential bridge, this bushing performs three critical tasks: isolating high voltage, conducting high current, and mechanically supporting the conductor. However, unlike traditional gas-filled or oil-filled bushings, the technological breakthrough here is the "All-Solid Insulation" structure.
The RIP Technology Advantage
The mainstream technology, RIP (Resin-Impregnated Paper), involves the precise vacuum impregnation of resin and paper to form a solid, gap-free insulation core. This design isn't just an upgrade—it's a game-changer for substation safety.
Here is why modern grids are switching to Dry-Type GIS Bushings:
1. Ultimate Safety & Eco-Friendly
Leak-Free: The solid structure completely eliminates the risk of oil or SF₆ gas leakage.
Explosion-Proof: No risk of explosion even under fault conditions, ensuring the safety of personnel and equipment.
2. Superior Reliability & Strength
Robust Design: High mechanical strength offers excellent seismic performance.
Weather Resistant: Immune to external factors like condensation and contamination, making it ideal for harsh environments.
3. High Electrical Performance
Precision Control: Built-in capacitive grading electrodes optimize electric field distribution.
Longevity: Features extremely low partial discharge levels, significantly extending operational lifespan.
4. Flexible Installation
Any Orientation: Unlike liquid-filled bushings, dry-type bushings can be installed at any angle (vertical, horizontal, or inclined).
Lightweight: Simplifies on-site construction and allows for more compact GIS layouts.
Conclusion: Building a Resilient Grid
Dry-Type GIS bushings are not just a component; they are a precise response to the industry's demand for safer, smaller, and maintenance-free substations.
They are rapidly becoming the standard for next-generation smart grids. Whether for a new installation or a retrofit project, choosing Dry-Type technology lays a solid foundation for a resilient energy future.
Looking for high-performance GIS Bushings?
[Contact Yearning Lasting] today for technical specifications and project support.
Dry-Type (RIP), Oil-Immersed, and Composite (GRP) Bushings: How to Choose?
Bushing Selection Guide: RIP vs. Oil-Immersed vs. Composite (GRP)
Choosing the right bushing technology is critical for the safety and longevity of your substation. Here is a quick comparison to help you decide.
1. Dry-Type (RIP) Bushings (Our Recommendation)
Best For: Ultimate Safety & Maintenance-Free Operation.
Why Choose It:Solid Insulation: Oil-free and Gas-free. Completely eliminates leakage and explosion risks.
Maintenance-Free: Install it and forget it. Zero lifecycle maintenance costs.
Versatile: perfect for GIS, high-altitude regions, and any installation angle.
Verdict: The premium standard for modern, high-reliability grids.
2. Oil-Immersed Bushings
Best For: Legacy systems or budget-constrained initial purchases.
The Trade-off:Risks: High risk of oil leakage and fire hazards.
High O&M Cost: Requires regular oil sampling, monitoring, and maintenance, leading to a higher total cost of ownership over time.
3. Composite (GRP) Bushings
Best For: Medium/Low-Voltage or weight-sensitive projects.
The Trade-off:Pros: Lightweight and lower initial cost.
Cons: Generally offers lower mechanical rigidity compared to the solid core of RIP bushings. Long-term reliability in ultra-high voltage (UHV) applications is still being proven compared to the established RIP technology.
One-Sentence Summary
Dry-Type (RIP) bushings lead comprehensively in safety, reliability, and environmental sustainability. While other types have their niche, RIP's "solid insulation" technology offers the lowest lifecycle cost, making it the undisputed choice for future-proof power grid construction.
Why Your Next Compensation System Should Be "Smart": Traditional vs. Smart Capacitors
Why Your Next Compensation System Should Be "Smart": Traditional vs. Smart Capacitors
Do traditional reactive power compensation solutions (controller + contactor + fuse + capacitors...) cause these headaches for you and your team?
Complex Cabinet Layout: Too many components, messy wiring, and numerous failure points.
Difficult Maintenance: Troubleshooting relies on guesswork; replacement is tedious.
Ineffective Compensation: Unable to address three-phase imbalance precisely.
It's time to upgrade to Smart Capacitors.
This isn't just a component replacement; it's a system-level integration revolution. A single module integrates measurement, control, switching, protection, and the capacitor itself into one compact unit.
What makes it so "Smart"?
1. Self-Organizing Network ("Teams Up on Its Own")
When multiple units are connected, they automatically negotiate to form an intelligent network.
No Controller Needed: They automatically elect a "master" unit.
Fail-Safe: If the master fails, the system immediately elects a new one. Zero downtime.
2. Advanced Monitoring ("Sharp Eyes")
It monitors over 20 parameters in real-time—voltage, current, power factor, and internal temperature.
Visual Diagnostics: An LCD display shows fault codes directly (e.g., "Over Voltage"), making troubleshooting straightforward. No more guessing game.
3. Precise Compensation
Unlike traditional 3-phase switching, Smart Capacitors enable split-phase (per-phase) switching. This specifically solves three-phase imbalance issues, offering far higher efficiency than traditional solutions.
4. Modular Installation ("Like Building Blocks")
Efficiency: Modular design allows for simple side-by-side installation. Wiring is reduced by 80%.
Scalability: Need to expand? Just add modules.
Easy Maintenance: Plug-and-play design allows for rapid replacement, boosting project efficiency by over 60%.
Two Options, Full Coverage
1. Standard Smart Capacitor: Ideal for most commercial/residential scenarios where harmonics are within standard limits. Excellent cost-effectiveness.
2. Anti-Harmonic Smart Capacitor (Detuned): Comes with a built-in reactor. Specifically designed for industrial sites with harmonic pollution, protecting capacitors from resonance and overload.
The Bottom Line: What Value Does It Deliver?
Direct Cost Savings: Maximizes power factor, avoids utility penalties.
Saves Time & Labor: Drastically simplifies cabinet assembly and future maintenance.
Safety & Reliability: Intelligent protection ensures production continuity.
Smart Capacitors make reactive power compensation simpler, safer, and smarter.
Ready to simplify your capacitor banks?
[Contact Yearning Lasting] to get the specs for our Smart Capacitor series.
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Your Trusted Partner for Electrical Equipment Sourcing Based in Xi'an, the heart of China's electrical industry, Yearning Lasting bridges the gap between global buyers and top-tier factories. We don't just source; we ensure technical compliance, rigorous quality control, and on-time delivery. Ready to upgrade your supply chain?