Summary:This article delves into an in-depth study of the application of power monitoring systems in intelligent buildings, first outlining the functional features of the intelligent power monitoring system, such as enhancing on-site work efficiency, reducing energy costs, and optimizing resources; then it analyzes the conventional power monitoring and power quality monitoring applications in intelligent buildings, thereby promoting the better development of intelligent buildings.
：Intelligent Buildings; Power Monitoring System; Applications
0 Introduction
With the continuous development of the economy, computer technology and information technology have also seen rapid advancement and achieved certain progress in related industries. As the demand for intelligent management and energy-saving in both living and public buildings increases, power monitoring systems have emerged and are gradually being integrated into people's daily lives. Through the optimization of the economic atmosphere, both in office and living environments, people's expectations for safety and comfort have been elevated, leading to the emergence of smart buildings that combine quality of life with information services. For smart buildings and power management systems, there is a complementary relationship between the two. Based on this, this article delves into the application of power monitoring systems in smart buildings.
1. Features of the Electric Power Intelligent Monitoring System
1.1 Enhance On-Site Work Efficiency
For the power intelligent monitoring system, staff can achieve accurate judgment and operation through the system settings, even more so with improved efficiency.ShortH~f.q is within the realm. At the same time, from the perspective of on-site personnel, the state of electrical power flow, due to its "transparency," allows for synchronized understanding of this state. Therefore, if a fault occurs, its resolution and handling can be expedited; and even when relevant personnel are not on-site, they can still access fault information. This is primarily achieved through system configuration, utilizing wireless technology to send over templates. These templates fully reflect the usage status of the equipment, facilitating better maintenance by staff and ensuring the equipment is properly managed.
1.2 Reduce Energy Costs
The smart power monitoring system optimizes costs in the energy sector. Under the smart power monitoring system, the baseline of electricity consumption is monitored, detecting abnormal consumption baselines, enabling tracking of electricity usage. From the perspective of optimized management loads, a simple load scheme is established among different regions. In terms of electricity quality, if losses occur due to issues, corresponding compensation claims can be made.
1.3 Resource Optimization
From the perspective of the electric power intelligent monitoring system, the reserve capacity of relevant equipment, such as power grids, distribution boards, and switchgear, can be accurately assessed. This is because the corresponding data fully reflects the utilization of electronic resources, and the data is also accurately processed. Consequently, from the perspective of the owner, it facilitates the allocation of electric power resources and decision-making, promoting the better development of the distribution system.
Application of Power Monitoring System in Smart Buildings
2.1 Standard Power Monitoring Applications
In the power system, at each detection point, the collection and monitoring of power parameters, data recording and statistics, and remote control requirements can be met from the perspective of conventional monitoring solutions. Typically, the collection and monitoring of common power parameters include switch operating status, voltage, current, power, and electrical energy, etc. Besides..."Besides 'Power Quality Monitoring,' it also achieves the main functions mentioned above."
For a certain university campus, there is...8 sub-stations, all rated at 10KV, with each sub-station housing 2 transformers—10KV/380V models. Each sub-station features a two-line busbar structure and has low-voltage distribution lines internally. To ensure crucial power supply for the school's regular teaching and research activities, the school can utilize an electric power monitoring system. By considering the students' actual situation, a reasonable conventional monitoring plan can be implemented. The entire system can be divided into sub-workstations and a monitoring center—8 sub-workstations and 1 monitoring center. The main communication network employs fiber optic Ethernet, with on-site monitoring layers within sub-stations connecting to TCP/IP Ethernet via Modbus bus communication. During actual connections, a serial port server can be used. The main server is located at the monitoring center, with 2 servers in total—one for data storage and analysis, and one for real-time system monitoring.
2.2 Power Quality Monitoring Application
From the perspective of power quality monitoring application solutions, voltage fluctuations and power quality issues can be monitored accordingly, and among all the functions within the system, it enables better realization. At the same time, under the waveform capture feature, if any anomalies occur in the waveform, these changes can be recorded, and for the analysis of power quality and faults, these waveform records can serve as a certain basis.
For power quality is directly related to the stable operation of the power system, particularly in industries like airports and telecommunication hubs, where the demand for electricity supply is high, requiring continuity. This also poses specific requirements on power monitoring systems, which not only need to perform conventional monitoring functions but also monitor power quality. In the event of a fault, rapid recording and analysis capabilities are essential.For special events, from a user's perspective, it is essential to implement an electrical power quality monitoring solution.
We take the example of an important industrial building, for which...There are two 35KV incoming lines, which are independent. The busbars operate in single segments, with the busbar being 10KV. Each line is equipped with a transformer, a 10KV/400V transformer. Each transformer supplies power to approximately 100 feeder circuits. Consequently, the following monitoring equipment configuration can be adopted: install a power line monitor on the 35KV incoming lines, specifically the CM4000T, which is highly rated in the system. Based on this, high-precision and functional equipment will be deployed to monitor this circuit. Typically, the CM4000T is configured to monitor the power quality on the supply side, preventing any adverse effects on the system.
3 Optimized Future Prospects for Electronic Monitoring Systems
Electronic monitoring systems play a crucial role in both production and daily life. In recent years, with the continuous economic development, various issues have emerged, such as environmental pollution and chaotic social regulatory systems. Consequently, power monitoring systems are heading towards automation. These systems can store massive amounts of information, ensure the smooth collection and analysis of data, and operate rapidly, enabling quick resolution of issues, saving labor, conserving resources, and enhancing resource utilization.
Ankoer Acrel-2000Z Power Monitoring System Solution
4.1 Overview
In response to user substation (typically)The comprehensive automatic monitoring system, composed of microcomputer protection devices, integrated switchgear control and measurement devices, wireless temperature measurement products for electrical connections, online power quality monitoring devices, distribution room environmental monitoring equipment, and arc protection devices, has achieved safe operation and management of substation, distribution, and power usage. The monitoring scope includes user substations, switchyards, transformer stations, and distribution rooms.
The Acrel-2000Z Power System Monitoring and Control System is a hierarchical and distributed substation monitoring management system developed by Ankorui Electric Co., Ltd. in response to the requirements of power system automation and unattended operation. It is designed for voltage levels of 35kV and below. This system integrates protection, monitoring, control, and communication functions into an open, networked, modular, and configurable system, leveraging power automation technology, computer technology, networking technology, and information transmission technology. It is suitable for urban, rural, and user substation grids with voltage levels of 35kV and below. The system enables control and management of substation operations, fulfilling the needs for unattended or minimally attended substation operations, and provides a solid guarantee for the safe, stable, and economic operation of substation facilities.
4.2 Application Sites
Applicable to rail transit, industry, construction, schools, and commercial complexes.Design, construction, and operation and maintenance of 35kV and below distribution automation systems at the customer's end.
4.3 System Architecture
The Acrel-2000Z Power Monitoring System employs a hierarchical distributed design, which can be divided into three layers: the station control management layer, the network communication layer, and the field equipment layer. The networking methods can include standard network structure, fiber optic star network structure, or fiber optic ring network structure. The choice of networking method is determined by considering various factors such as the scale of electricity consumption, distribution of electrical equipment, and land area occupied.
4.4 System Features
4.4.1 Real-time Monitoring: Provides an intuitive display of the distribution network's operational status, continuously monitoring electrical parameters of each loop, and dynamically supervising fault and alarm signals related to distribution loops.
4.4.2 Power Parameter Inquiry: Detailed power parameters of the circuit can be directly viewed on the primary distribution diagram.
4.4.3 Curve Query: Directly view curves for various electrical parameters.
4.4.4 Operational Reports: Query operating parameters for each loop or equipment's runtime.
4.4.5 Real-Time Alerting: Equipped with real-time alerting functionality, the system can issue alerts for events such as changes in remote signal status of distribution circuit, protective actions, and fault trips.
4.4.6 Historical Event Inquiry: Stores and manages event records, facilitating users to trace historical system events and alarms, as well as for query statistics and accident analysis.
4.4.7 Electric Power Statistics Report: The system is equipped with a timed meter reading and summary statistics function, allowing users to freely inquire about the power consumption of each distribution node within any time period since the system has been operating normally.
4.4.8 User Permission Management: The user permission management feature is set up to define login names, passwords, and operational permissions for users of different levels.
4.4.9 Network Topology Map: Supports real-time monitoring and diagnosis of communication status for all devices, enabling a complete display of the entire system's network structure.
4.4.10 Power Quality Monitoring: Continuously monitors the power quality and reliability conditions within the entire distribution system scope.
4.4.11 Remote Control Function: Allows for remote operation of equipment within the entire distribution system range.
4.4.12 Fault Recording: Automatically and accurately records the changes in various electrical quantities before and after a system failure.
4.4.13 Incident Memoir: Automatically records all real-time steady-state information around the moment of an accident.
4.4.14 Web Access: Displays an overview of substation, transformer, and monitoring point quantities, as well as equipment communication status, power consumption analysis, and event logs.
4.4.15 APP Access: The Device Data page displays the electrical parameter data and curves for each device.
4.5 System Hardware Configuration
Conclusion
In summary, amidst the information age, electronic monitoring systems, as products of the era, fully reflect the pursuit of people for better quality of life and simplified work processes. Moreover, in smart buildings, they can be widely applied, promoting the simplification of people's lives. It can be said that electronic monitoring systems are involved in all aspects of life.
Reference
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[2] Wang Yongtao"Application of Power Monitoring System in Intelligent Buildings [J]. Electrical Engineering Technology, 2019(8): 24-39."
[3] Dang Shun"Application Analysis of Power Monitoring Systems in Smart Buildings [J], 2018(21): 116-117."
Liu Zhangyin, Peng Weidong. Application Analysis of Electric Power Monitoring System in Smart Buildings.
[5] Ankorri Enterprise Microgrid Design and Application Manual.2022.05 version
