Summary:With rapid economic growth and continuous technological advancement, the reliability of the power system is being demanded at a higher level across various sectors of society. In recent years, driven by the strong push of information technology, the research and application of power monitoring systems have become increasingly active. Currently, under increasingly scaled production and operation conditions, the demand for electricity is growing, and its reliability has garnered widespread attention. The application and operation of power supervision systems have become a key issue in the development of the power industry.
KeywordsPower Monitoring System; Research; Application
- Power Monitoring System
An Electric Power Monitoring System is an emerging power control and detection system that utilizes computers and other communication devices to monitor power data, the operational status of power systems, and their working conditions in real-time. Power systems offer numerous functionalities, such as collecting, organizing, and storing power data. The application of power monitoring systems in many designs not only significantly enhances system efficiency but also serves to monitor the operational status of the system in real-time, thereby improving the economic benefits of the project.
Electricity monitoring and detection technology is an emerging, modern high-tech field, supported not only by advanced technical concepts but also by practical working advantages. It can provide real-time monitoring of the operation status, reliability, and basic conditions of the power system under stable conditions. As a leading technology in the new era of development, appropriately applying the electricity monitoring system across various industries can significantly enhance work efficiency and prevent waste. Clearly defining the basic functions of the electricity monitoring system and understanding the key points of power system usage can promote awareness of the significance and position of electricity monitoring, thereby fostering further development and improvement of the electricity monitoring system.
- Basic Functions of Electric Power Monitoring System
Firstly, the data collection function. Most power systems utilize data querying to collect data, which effectively reduces the time required for power processing and enhances work efficiency. Data collection encompasses the collection of analog quantities, the collection of switch quantities, and the calculation of electrical energy.
In the context of power system monitoring, the collection of analog data involves the gathering and recording of voltage, current, resistance, and resistivity levels across each segment. Analog data collection employs both DC and AC sampling methods. DC sampling is relatively simple and robust against interference, although it lacks real-time accuracy, is prone to errors, and requires further improvement in stability. Given the complex operation procedures and numerous internal structures of power system monitoring, it is essential to record the switching states, knife switch conditions, and alarm data in real-time and accurately. Timely and effective monitoring of switch closures not only aids in the accurate assessment of circuit conditions by staff, ensuring the reliability of the power system, but also plays a protective role in safeguarding people's lives and property. Calculating electricity usage yields the overall efficiency of the circuit. Previous methods of electricity calculation were quite simplistic and could not be connected to communication devices, leading to energy waste. The new method of electricity calculation addresses this by introducing two distinct approaches, differing in data processing methods but sharing the same design principles. Both have improved the efficiency and accuracy of electricity calculation.
Secondly, the sequential recording feature. The sequential recording function of the power system not only records and monitors the entire circuit's operating sequence but also provides protection for the entire circuit. However, successfully implementing this feature of the power monitoring system requires certain environmental requirements. It must be run effectively only when there is sufficient memory in the computer or other communication devices. Because only with enough memory can events and their timing be recorded smoothly, ensuring the effectiveness and reliability of the power monitoring system, making it easier for staff to retrieve past information.
Thirdly, the Fault Record Function. The Fault Record Function of the Power Monitoring System can clearly record faults throughout the entire power system, facilitating the fault detection and maintenance troubleshooting by staff in subsequent handling work. Experiments show that the areas in the power system where faults are most likely to occur are circuit switches, knife switches, and similar areas. Through the Power Monitoring System, the operational efficiency of the circuits has been effectively ensured.
- Application of Electric Power Monitoring System
3.1 System Topology Structure
Firstly, the primary purpose of the field level is to collect and process various parameters from different operating systems, while also transmitting the collected and detected data information to the corresponding monitoring systems. Staff members must select appropriate electrical equipment based on actual engineering requirements. It is essential to ensure that each device can independently complete its own tasks and functions without relying on the central control computer. Therefore, field buses can be used to promptly and effectively transmit the data collected from various electrical field locations to the intermediate level, thereby assisting in the completion of data processing tasks. Throughout this process, the electrical monitoring system is also used to perform corresponding operations.
Next, the master control layer. Typically, the master control layer of an electric power monitoring system is located in the central control room and the duty room, with the assistance of high-performance equipment such as computers and printers. Therefore, the related electric power monitoring system is installed on the central processing computer, while also implementing a series of management functions such as interface management according to the installed software, thereby realizing the monitoring and management functions of the electric power monitoring system.
3.2 Network Solution Design
Due to the reliance of power monitoring systems on field bus technology for overall power network management and control, they can be directly integrated into the bus during actual operations. This, in turn, creates a complete network system through related high-performance equipment. This approach not only facilitates the simple, energy-efficient composition of power networks but also effectively addresses the issue of power field data collection. As a result, commands from central computers can be promptly and efficiently transmitted to various power sites, greatly ensuring the effective operation of the power monitoring system.
Firstly, for larger power systems that are more scattered, due to the abundance of on-site intelligent detection equipment for power monitoring systems, the scope of their dispersion is also wide. Therefore, when designing, it is first necessary to connect all field buses to the on-site monitoring equipment of the power monitoring system, and then sequentially connect each bus of the power monitoring system to the gateway, thus completing the design.
Secondly, the configuration methods for relatively centralized small-scale power systems differ from those for decentralized large systems. Since the number of on-site intelligent monitoring devices in centralized small systems is limited and concentrated, all intelligent monitoring devices can be connected to a single bus, then linked to a dedicated converter and power monitoring master station for data exchange.
For large-scale power systems with numerous sub-substations, due to the complexity of the power monitoring system, it is crucial to prioritize the enhancement of its stability during the design phase. Therefore, it is advisable to equip each sub-substation with a primary monitoring computer to ensure the integrity and validity of any signal data within the power system. Simultaneously, the primary monitoring computer not only manages and maintains the intelligent monitoring equipment on-site but also processes and computes the signal data within the respective stations. At this point, only important information needs to be transmitted to the central computer, which will then handle the feedback from the sub-substations accordingly, authorizing operations based on actual conditions. This approach significantly boosts the efficiency of the power monitoring system, guarantees its effectiveness and reliability, and ultimately enhances the quality of the design.
The power monitoring system is a particularly crucial component of the overall power control system. It allows for the recording, analysis, and organization of power data, which in turn enhances work efficiency, saves time, and reduces energy consumption. It is evident that researching and effectively utilizing the power monitoring system and integrating it appropriately into various industries is of great significance for the development of China's power sector.
- Ankorri Power Monitoring System Product Introduction and Selection
4.1 Overview
The Acrel-2000Z Power Monitoring System is a tiered and distributed substation monitoring management system developed by Ankorui Electric Co., Ltd. in response to the requirements of power system automation and unattended operation. Specifically designed for voltage levels of 35kV and below, this system integrates protection, monitoring, control, and communication functionalities into an open, networked, unitized, and configurable system using power automation technology, computer technology, and information transmission technology. It is suitable for urban, rural, and customer substation grids operating at 35kV and below. The system enables control and management of substation locations, meeting the needs for unattended or minimally attended substation operations, and provides a solid guarantee for stable and economic substation operation.
4.2 Application Venue
Office Buildings (Commercial Office, Government Agency Office Buildings, etc.)
Commercial Buildings (malls, financial institution buildings, etc.)
Transportation Infrastructure Construction (airport, railway station, port buildings, etc.)
Manufacturing and Industrial Facilities (Oil, Chemical, Cement, Coal, Steel, etc.)
New Energy Buildings (Photovoltaic Power Generation, Wind Power Generation, etc.)
4.3 System Architecture
The Acrel-2000Z Power Monitoring System employs a layered 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 be a standard network structure, an optical fiber star network structure, or an optical fiber ring network structure. The networking approach is determined by considering various factors such as the scale of electricity consumption, distribution of electrical equipment, and land area.
Closing Remarks
The rational application and scientific operation of power monitoring systems are crucial for ensuring the stable operation of power work. In specific operational procedures, the attention of relevant departments and personnel should be drawn. The application of power monitoring systems can enable real-time monitoring of the internal operational status of power stations even when unattended, greatly saving physical and human resources. In the power system, they play a significant technical and monitoring role. It is predictable that in the future application and development of power monitoring systems, there will be a greater emphasis on automation and intelligence. As of the current development prospects, there is still a considerable room for innovation in power monitoring systems.
References
- Xu Wenjuan, Liu Canglian. Research and Application of Electric Power Monitoring System[J]
- Liu Hualong. Application Analysis and Accident Handling of Power Monitoring Systems[J]. Science and Technology Breeze, 2013, 23: 88.
- Ankorri Power Monitoring and Protection Product Selection Guide, July 2022.
- Ankorri's Corporate Microgrid Design and Application Manual, May 2022.
