Introduction
Uzbekistan is continuously upgrading its national power grid to meet the growing demand for reliable electricity supply across urban areas, industrial zones and rural regions. As a key part of local power distribution network expansion, this 110kV substation project aims to strengthen power transmission capacity and improve grid operation stability by adopting reliable protection and control panels for full-system grid monitoring and fault protection.
We specialize in substation protection and control solutions. We supplied customized panels with robust high voltage relay protection, covering all required systems. All design, production, testing and shipment work was finished on time.
This project fully proves our comprehensive strength in delivering turnkey protection and control solutions for international utility and industrial substation projects compliant with global standards.
Project Overview
Basic Project Information
| Item | Description |
|---|---|
| Country | Uzbekistan |
| Voltage Level | 110kV |
| Application | Power Distribution Substation |
| Scope of Supply | Protection, Control, Metering and DC System Panels |
| End User | Local Power Utility & EPC Contractor |
| Delivery Mode | Engineering Design + Manufacturing + FAT + International Shipment |
Scope of Supply
We supplied integrated protection and control panels to support normal and fault operation of the 110kV substation for reliable grid management.
AC/DC Distribution Panels
AC and DC distribution panels serve as the core station service power supply for the entire substation. They deliver stable auxiliary power to protection relays, control devices, communication modules, lighting and other on-site equipment, ensuring uninterrupted operation of all secondary systems under various working conditions.
Energy Metering Panels
The revenue metering system installed on metering panels realizes accurate real-time measurement, statistics and recording of power consumption. It complies with international metering standards, supporting energy accounting, data statistics and settlement for the power station, which is essential for daily grid operation management.
Central Alarm and Annunciation Panels
Central alarm and annunciator panels enable centralized monitoring of all operating status and fault signals of the substation. Once abnormal conditions or faults occur in primary and secondary equipment, the system will trigger timely sound and light alarms and record event information, helping on-site staff quickly locate problems and carry out troubleshooting.
Main Transformer Protection Panels
Equipped with high-performance differential protection relays and multi-functional protection devices, main transformer protection panels provide comprehensive protection for power transformers. The main protection functions include differential protection, overcurrent protection, earth fault protection and winding temperature monitoring. These functions can rapidly isolate faults and prevent transformer damage caused by internal failures.
Transmission Line Protection Panels
Specially designed for 110kV transmission lines, line protection panels adopt reliable distance protection relays. They integrate distance protection, overcurrent protection, auto reclosing and fault recording functions. When short circuit, grounding and other line faults happen, the system can act quickly to cut off faulty sections and restore power supply automatically, greatly improving the reliability of power transmission lines.
Engineering Challenges Faced by the Customer
During the early stage of project docking, the customer put forward several practical challenges, which also became the key points of our technical breakthrough.
Challenge 1: Inconsistent Original Drawings and Hardware Configuration
The original design drawings provided by the customer were formulated for other brands of equipment. There were big differences in internal hardware structure, component layout and signal distribution. Direct production according to the original drawings could not match our standard products, which required overall technical adjustment and re-optimization.
Challenge 2: Strict Requirements for System Compatibility
The customer attached great importance to the overall matching performance of the system. Potential risks including mismatched protection logic, non-standard wiring and incompatible communication protocols needed to be fully eliminated. The whole set of equipment must operate stably and coordinate seamlessly on site.
Challenge 3: Tight Project Schedule
The substation construction progress was tight. The customer required rapid technical review, efficient production and guaranteed on-time delivery, putting forward high requirements for our engineering efficiency and production capacity.
Our Engineering Solution
Targeting the above difficulties, our professional electrical engineering team formulated a targeted solution and completed drawing re-design and technical confirmation step by step.
Detailed Drawing Review and Optimization
Step 1: Full Analysis of Technical Documents
Our engineers conducted a comprehensive review of all submitted technical documents, including single line diagrams, protection schematics, equipment terminal layouts and cable schedules. We sorted out all technical parameters, logic requirements and wiring rules to clarify the overall design direction.
Step 2: Professional Re-engineering and Adaptation
Instead of simply copying the original design, we reconfigured the overall protection schemes based on our own relay products and technical standards. Meanwhile, we optimized terminal arrangement, updated internal wiring diagrams and adjusted the communication architecture to make the whole design perfectly adapt to our equipment while fully meeting all the functional requirements of the project.
Step 3: Drawing Submission and Final Approval
After repeated internal verification, we submitted the optimized general arrangement drawings, wiring diagrams, terminal plans and communication drawings to the customer for review. All documents passed the audit smoothly and obtained formal approval, laying a solid foundation for subsequent production.
Manufacturing Process
We enforced strict quality control throughout production to ensure all protection and control panels meet international standards.
First of all, professional workers completed cabinet assembly, main bus wiring and terminal installation in accordance with the confirmed drawings. Afterwards, protection relays, measuring devices and communication modules were accurately installed and wired.
After assembly, our quality inspection team carried out comprehensive internal inspection, covering mechanical structure check, full wiring verification and label inspection. Any unqualified products would be reworked immediately to ensure zero defects before formal testing.
Factory Acceptance Testing (FAT)
Factory Acceptance Testing is a crucial link for overseas projects. We conducted a full set of professional tests for all panels before delivery to verify all functions.
- Wiring Verification: Every circuit was inspected one by one to ensure standard wiring and correct connection.
- Protection Function Testing: We fully tested differential protection, overcurrent protection, earth fault protection and breaker failure logic, and all protection actions were accurate and reliable.
- Communication Testing: Verified the compatibility and stability of IEC 61850, Modbus and other mainstream communication protocols to guarantee smooth data interaction with the substation SCADA system.
- Alarm and Signal Verification: Tested central alarm linkage, remote status indication and event recording functions, all of which operated normally as designed.
The entire FAT process was completed successfully, and all test reports were submitted to the customer for confirmation.
Packing and International Shipment
For export transportation, we adopted export-standard wooden cases for packaging. Moisture-proof films, desiccants and shockproof fillers were used inside the packages to prevent equipment from being damaged by dampness, collision and vibration during long-distance sea and land transportation.
All goods were loaded and shipped as scheduled, with complete shipping documents and technical documents attached, ensuring smooth customs clearance and safe arrival at the destination.
Why International EPC Contractors Choose Us
We have won trust from numerous international power companies and EPC contractors for our core advantages in technology, products, production and project service.
Strong Professional Engineering Team
Our engineering team has rich experience in international power projects. We are capable of drawing re-design, protection scheme customization and technical adaptation strictly in accordance with IEC international standards, and can respond quickly to various personalized design demands from customers.
Complete Product Portfolio
We supply a full range of substation secondary equipment, including protection relays, control panels, metering panels, AC/DC distribution systems and supporting communication solutions. Customers can realize one-stop procurement to simplify project docking and management.
Reliable Manufacturing & Quality Control
With standardized production workshops and strict quality management system, we support mass production and short-cycle delivery. Every product undergoes multi-process inspection and full functional testing to ensure stable and reliable performance for long-term field operation.
Rich Overseas Project Experience
We have served a large number of utility substations, renewable energy power plants and industrial power system projects across Central Asia, Southeast Asia, the Middle East and Africa. We are familiar with overseas project processes, export standards and technical requirements, and can provide full-process support from design to after-sales.
Frequently Asked Questions (FAQ)
Can you redesign drawings based on your own protection relays?
Yes. Our professional engineering team can analyze your original drawings and re-design the entire protection and control scheme based on our products. We will keep all project functional requirements unchanged while realizing perfect matching with our equipment.
Can you provide complete protection and control panels for substations?
Absolutely. We offer integrated substation solutions, including protection panels, control panels, metering panels, AC/DC power distribution panels and central alarm panels, covering all secondary equipment required for substations of different voltage levels.
Do you perform Factory Acceptance Tests before shipment?
Yes. All our export projects will go through comprehensive FAT. The test items include wiring check, protection function test, communication test and alarm signal verification, with formal test reports provided for customers.
Can your panels support IEC 61850 communication?
Yes. Our protection and control panels support mainstream industrial communication protocols such as IEC 61850 and Modbus, which can be well connected with most SCADA systems used in international substations.
Conclusion
The successful delivery of this 110kV substation project in Uzbekistan fully demonstrates our comprehensive capabilities in engineering design, customized manufacturing, professional testing and international delivery for overseas power projects.
We keep focusing on providing high-quality, standard-compliant substation protection and control solutions for global clients. Whether it is 35kV, 66kV, 110kV, 220kV conventional substations or renewable energy power station supporting projects, we can tailor the most suitable equipment and services for you.
Looking for a reliable manufacturer and supplier of substation protection and control systems? Contact us now to discuss your project demands and get professional technical support and quotation.
