UPS Solution for Power Industry

I. Power Supply Challenges in the Power Industry

The power industry encompasses power generation, transmission, transformation, distribution, and supply. Each aspect poses stringent requirements on power supply, and any issue may trigger power quality declines or outages, severely disrupting social economy and people’s lives. Below are the primary power supply challenges in the power industry:

1.Power Generation

Coal-fired Power Plants: During operation, equipment like coal feeders, pulverizers, and induced draft fans requires continuous power supply. Power interruptions may lead to equipment damage and plant shutdowns.

Hydropower Plants: The start-stop control of water turbines and the operation of dam sluice gates demand stable power supply. Power outages may affect power generation and flood control safety.

Nuclear Power Plants: Nuclear power plants impose extremely high safety requirements on power supply. Critical safety systems like cooling systems must operate reliably even during grid failures to prevent radiation leaks.

2.Power Transmission and Transformation

Substations: Primary equipment such as transformers, circuit breakers, and disconnect switches relies on stable power supply. Secondary equipment like relay protection and automation systems also requires uninterrupted power to ensure rapid and accurate fault responses.

Transmission Lines: Monitoring systems for transmission lines, including cameras and sensors, need reliable power to enable real-time monitoring of line conditions.

3.Power Distribution

Distribution Transformers: Located on the front line of power supply, distribution transformers are widely distributed and operate in complex environments. They require high reliability and adaptability.

Switching Stations and Distribution Rooms: Switching stations and distribution rooms serve as key nodes in power distribution systems. Their switchgear and protective devices require stable power supply to ensure reliable power distribution.

Customer-Side Distribution Systems: Critical power users like hospitals and data centers demand uninterruptible power supply from the power grid. Even momentary power interruptions may cause significant losses.

II. UPS Solution for Power Industry Overview

The UPS solution aims to provide high-quality, high-reliability uninterruptible power supply for critical equipment and systems in the power industry. It ensures stable operation during power generation, transmission, transformation, distribution, and supply, enhances power system reliability and power quality, and guarantees safe and continuous power supply.

III. System Architecture Design

1.Centralized Large UPS Systems for Key Facilities

In large power plants and substations, centralized large UPS systems are deployed to supply power to critical control systems, communication equipment, and monitoring instruments.

2.Distributed Small UPS Systems at Key Nodes

In distribution systems and distributed energy integration points, distributed small UPS systems are installed. These systems ensure independent and reliable power supply for equipment at different nodes, enhancing power supply flexibility and reliability.

3.Integrated Power Management System

An integrated power management system is established to centrally monitor and manage UPS systems across power generation, transmission, transformation, distribution, and supply. This system enables real-time monitoring of UPS equipment status, centralized control, and intelligent management, improving the operational efficiency and reliability of power systems.

IV. UPS System Selection and Configuration

1.Accurate Calculation of Power Requirements

Conduct a comprehensive survey and statistics of power consumption for critical equipment in power plants, substations, and distribution systems. Based on the equipment’s rated power, usage patterns, and future expansion needs, accurately calculate the total UPS capacity required.

2.Reasonable Redundancy Design

Considering the critical role of power supply in the power industry, it is recommended to design redundancy in UPS capacity. Generally, the selected UPS capacity should be 1.2 to 1.5 times the calculated capacity to ensure reliable power supply for new equipment additions and future business growth.

3.Battery Configuration

Determine UPS battery backup time based on application scenarios and power outage emergency handling requirements. For key control systems in power plants and substations, set the UPS battery backup time to 30 – 60 minutes to provide enough time for emergency generator startup and ensure safe equipment shutdown. For critical power dispatching communication equipment and distributed energy integration points, extend the battery backup time to 2 – 4 hours to meet continuous operation requirements during power outages.

V. Key Equipment Protection Strategies

1.Power Plant Equipment

UPS systems provide precise power support for automation control systems, excitation systems, and monitoring equipment in power plants. During normal utility operation, they ensure stable equipment operation and data accuracy. When utility power fails, they immediately switch to battery power to maintain continuous operation and enable safe shutdown procedures, preventing equipment damage and accidents.

2.Substation Equipment

For substation equipment such as transformer cooling systems, switchgear operating power supplies, and relay protection devices, UPS systems ensure stable power supply during utility fluctuations or outages, maintaining grid stability and reliable power transmission.

3.Power Dispatching Communication Systems

Power dispatching communication systems are the core of grid dispatching. UPS systems supply power to dispatching automation system servers and communication equipment. During normal utility operation, they ensure stable equipment operation and data integrity. When utility power fails, they immediately switch to battery power to maintain continuous operation, enabling dispatching personnel to obtain real-time grid information and make accurate decisions, preventing grid accidents and widespread outages.

VI. Environment Adaptability and Reliability Enhancement Measures

1.Environmental Adaptability Design

UPS equipment is designed with protective features to adapt to power industry environments. In power plants and substations, UPS equipment features high-protection designs to prevent dust and moisture ingress. Outdoor or remote installations incorporate lightning protection, moisture resistance, and corrosion resistance to adapt to various climate and environmental conditions.

2.Reliability Enhancement Measures

Adopt redundant designs such as dual power inputs and parallel redundancy to enhance UPS system reliability. In power plants and substations, dual power inputs allow automatic switching between utility power sources. Parallel redundancy enables multiple UPS units to operate in parallel, with other units taking over the load if one fails. Strengthen heat dissipation design and component reliability. Conduct strict quality inspections and aging tests on key components like capacitors, transformers, and power modules. Establish comprehensive regular maintenance and inspection systems to promptly address potential issues and ensure long-term stable UPS operation.

VII. Intelligent Monitoring and Management

1.UPS System Monitoring Functions

UPS systems feature intelligent monitoring modules that real-time monitor key parameters such as voltage, current, frequency, battery status, and load conditions. These parameters are displayed through monitoring interfaces, enabling staff to promptly understand UPS equipment status and power supply conditions. When abnormalities occur, the monitoring system immediately triggers audio-visual alarms and sends alarm information to staff via SMS or email, ensuring timely responses to prevent equipment damage and power outages.

2.Remote Monitoring and Management

Leveraging network technology, UPS systems support remote monitoring and management. Staff can remotely monitor UPS equipment status and perform operations such as parameter settings and fault diagnosis via web browsers or mobile apps, improving management efficiency and response speed. UPS systems also enable centralized monitoring and management of multiple devices across power generation, transmission, transformation, distribution, and supply. They can collect and analyze operational data from UPS equipment, providing a basis for equipment maintenance and management optimization. This improves the operational efficiency and reliability of power systems.

VIII. Installation and Implementation

1.Pre-Installation Preparation

Before installing UPS equipment, conduct a detailed inspection of power supply systems, wiring, and grounding. Ensure that utility power quality meets UPS input requirements and that grounding systems are reliable. Additionally, evaluate the installation environment to ensure UPS equipment is installed in locations with good ventilation, low dust levels, and suitable temperatures.

2.Development of Installation Plan

Based on power plant, substation, or distribution system layouts and equipment distribution, formulate a detailed UPS installation plan. This plan should include equipment placement, wiring routes, and installation sequences to ensure smooth installation.

3.UPS System Installation Steps

Follow UPS equipment installation manuals and standardized procedures. Install UPS hosts, battery cabinets, and distribution cabinets, and connect wiring according to specifications. Ensure secure connections and proper insulation to prevent issues like poor contact or short circuits.

4.System Commissioning and Testing

After installation, conduct comprehensive commissioning and testing of UPS equipment. Test input/output voltage, current, frequency, and other parameters to ensure they meet equipment requirements. Perform charging and discharging tests on batteries to verify their capacity and backup time. Simulate utility power failure scenarios to test the UPS system’s ability to switch between utility and battery power. Ensure that switching times meet equipment requirements and that UPS systems can provide continuous power supply to critical equipment during utility outages.

IX. Operation and Maintenance

1.Daily Maintenance Tasks

Develop a daily maintenance plan and assign dedicated personnel to regularly inspect UPS equipment. Check equipment appearance, operating status, and monitor parameters to promptly identify and address issues.

2.Battery Maintenance

Regularly inspect battery appearance and voltage. Perform battery charge/discharge tests and maintenance to ensure battery performance and extend service life.

3.Periodic Maintenance and Inspection

Conduct professional maintenance and inspection of UPS equipment at regular intervals, such as every six months or annually. Perform comprehensive checks on equipment components, replace aging parts, and ensure reliable UPS operation.

4.Equipment Cleaning and Dust Removal

Regularly clean UPS equipment and remove dust from internal components and heat dissipation systems to ensure good heat dissipation and prevent equipment failures caused by overheating.

5.Development of Emergency Response Plans

Develop emergency response plans for UPS equipment failures to define emergency procedures, responsibilities, and contact personnel. The plan should include emergency power supply measures, equipment shutdown and restart procedures, and safety precautions to minimize the impact of failures on power supply.

6.Emergency Drills

Regularly conduct emergency drills to enhance staff’s ability to respond to UPS equipment failures and improve emergency coordination. Through drills, refine emergency response plans to ensure rapid and effective responses to failures, safeguarding the stability of power supply.

In summary, our UPS solution for the power industry addresses the power supply challenges faced by power generation, transmission, transformation, distribution, and supply sectors. By providing high-quality, high-reliability uninterruptible power supply, it ensures the stable operation of critical equipment and systems in the power industry. This enhances power system reliability and power quality, guarantees safe and continuous power supply, and ensures the stable operation of the power industry.