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End-to-End Power Project Solutions for the Global Energy Market

IEE Business provides end-to-end power project solutions for the global market — from financing and procurement to engineering, construction, and commissioning. We support utilities, developers, and industries with integrated services across renewable, thermal, and grid infrastructure projects, ensuring efficiency, compliance, and timely delivery worldwide.

Nanocrystalline Reactor Solution for 550kW VFD Outputting Voltage Spikes of 5000 V/μs

1. Challenge: Output-Side Voltage Spikes (du/dt > 5000 V/μs) from 550kW VFDs in Steel Rolling MillsDuring steel rolling production, motors (especially main drive motors for rolling mills) are subjected to intense impact load variations, rapid starts/stops, and frequent bidirectional rotation switching. These operating conditions pose severe challenges for VFD (Variable Frequency Drive) systems, particularly in high-power (550kW) applications. A core issue is the generation of extremely
18yrs 500-1000 employees 108000m²+m² US$150,000,000+ China
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07/25/2025
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TKDG Air-Core Reactor Empowers 12-Pulse Rectifier System: Harmonic Mitigation Solution for Rail Transit Traction Power Supply

Ⅰ. Application ScenarioWhen 12-pulse rectifier units operate in subway traction substations, they tend to generate characteristic harmonics such as the 11th and 13th orders. This leads to excessive contact line voltage waveform distortion (measured at 8.5%), impacting power supply quality and the safety of rolling stock equipment.II. Core SolutionDeploy TKDG-type outdoor epoxy-cast air-core reactors to achieve efficient harmonic absorption and system optimization.III. Technical Highlights Innova
18yrs 500-1000 employees 108000m²+m² US$150,000,000+ China
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07/25/2025
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Application of Reactors in Long-Distance Transmission Grids: Reactive Power Compensation and Overvoltage Suppression Solutions

Application Scenario:Excessive capacitive charging power in long-distance transmission lines of 500kV substations.Problem Background:In long-distance transmission lines rated at 500kV and above, the line-to-ground capacitance effect is significant. When operating under light load or no load, these lines generate substantial capacitive charging power (capacitive reactive power). This excessive power leads to: Power-frequency overvoltage: Line voltage rises significantly, potentially exceeding equ
18yrs 500-1000 employees 108000m²+m² US$150,000,000+ China
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07/25/2025
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Efficient and Low-Cost Operation & Maintenance Solution for Electronic Voltage Transformers (EVTs)

1. Current Challenges and OpportunitiesTraditional electromagnetic voltage transformers (VTs) face issues such as accuracy susceptible to load variation, ferroresonance risks, high maintenance costs, and difficulty in timely detection of latent faults. EVTs, utilizing capacitive voltage division or optical principles combined with signal processing technology, provide the technical foundation to break through the bottlenecks of traditional O&M models.2. Core Solutions for Efficient and Low-C
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Electronic Voltage Transformer Solution: The Ideal Choice for Extreme Environments, Long Life, and Minimal Maintenance

In demanding application scenarios such as Ultra High Voltage (UHV) power transmission, offshore wind power, and Gas-insulated Switchgear (GIS), reliability, safety, and operational lifespan requirements for voltage measurement equipment are unprecedented. Traditional electromagnetic voltage transformers (VTs) often fall short when faced with extreme temperatures, intense electromagnetic interference, high insulation requirements, and the need for long-term minimal maintenance. The Electronic Vo
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Southeast Asia Power Grid Solutions: Resilient Electronic Voltage Transformers for Extreme Environments

Southeast Asia Market Pain Points & EVT Solutions Pain Points EVT Solutions High Temperature & Humidity IP67 Protection + Silicone Potting: Withstands 40&deg;C/95% RH environments, increasing lifespan by 50%. Frequent Grid Fluctuations Class 0.2 Accuracy + Wide Input Range (110kV-500kV): Adapts to unstable grids. Difficult Island Deployment Modular Design (<20kg/unit): Enables helicopter airlifting, reducing remote area installation costs.
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Electronic Current Transformer (ECT) Solution:​​ ​Economically Driven Retrofit

I. Pain Points: Challenges in Conventional Substation RetrofitTraditional electromagnetic current transformers (CTs) present numerous issues in aging substations: High Retrofit Cost: Replacing conventional CTs requires large-scale power outages, civil construction, and updates to protection panels, cabling, and grounding systems. Combined costs exceed 50%. Poor Compatibility: New devices have interface mismatches with legacy secondary systems (e.g., relays, meters), necessitating additional conv
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Transformative ECT Solutions: Seamless Plug-and-Play, Integrated Systems & Flexible Configuration

I. Technical Background and ChallengesTraditional electromagnetic current transformers (CTs) face bottlenecks such as large size, complex installation, poor linearity, and susceptibility to magnetic saturation. With the development of smart grids and digital substations, the demand for higher measurement accuracy, dynamic response, and data integration capabilities has increased. Electronic current transformers (ECTs), characterized by full digitalization, high bandwidth, and low power consumpti
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Electronic Current Transformer (ECT) High-Precision Solution

I. Pain Points & ChallengesTraditional electromagnetic current transformers (CTs) suffer from inherent limitations like magnetic saturation, narrow bandwidth, and large size, making it difficult to meet the smart grid's demands for high-precision and wide-dynamic-range measurement. Especially under large current surges or complex harmonic operating conditions, accuracy readily degrades, compromising the safety and economic operation of power systems.II. Core Technological Breakthrough: Multi
3yrs 1000+m² US$300,000,000+ China
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07/24/2025
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Combined Instrument Transformer (CIT) Solution: Engineering Design & Integration Perspective

1. Core Solution Concept: Modular Platform with Shared Insulation Design: Develop a unified, modular platform housing both current and voltage sensing functions within a single, optimized structure. Insulation: Utilize a shared insulating envelope. Two options are engineered: SF6 Gas: Proven high-dielectric strength and excellent arc-quenching properties for higher voltage classes (e.g., 72.5 kV and above). Design incorporates gas density monitoring and proven sealing technology. Composite Ho
3yrs 1000+m² US$300,000,000+ China
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07/22/2025
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