Overview of power monitoring system
The subway power monitoring system is a control platform that can effectively regulate and supervise the power system to maintain a normal state in the setting of the urban rail transit underground rail power supply system. The power monitoring system mainly has the following functions, namely, safety management, data collection, processing information, calculation statistics, alarm processing, remote control, real-time database management, historical trends, generating reports and printing, editing and displaying screens, multimedia voice alarms, and Web browsing , Accident Recall, Record Event Sequence and Operator Training Simulation, etc. Important nodes rely on dual-machine hot backup to improve the security of the power monitoring system. If a server has a problem, the data running on the server will be automatically switched to other servers to ensure the normal operation of the power monitoring system. The power monitoring system also has a complete authority management function, which can quickly and stably eliminate the internal faults of the power monitoring system manually or automatically, and will not affect the operation of other nodes of the power monitoring system during the fault elimination process . The main server is the core of the entire power automation monitoring and management system. It realizes the monitoring and control of the front-end processors and communication management machines at all levels of power monitoring as a whole, analyzes the operation status of the internal power grid of the subway, and coordinates the relationship between RTUs in the substation. Effectively manage the entire network, so that the entire system is in the optimal operating state. The system consists of three parts: intelligent centralized control platform software, substation data centralized acquisition software and real-time database software. The entire subway power monitoring data can be connected to the data management platform. The data of each system provides a unified data interface in order to realize the integration of management and control in the entire subway area.
In order to promote the smooth construction of urban underground rail transit, the power monitoring system equipped with it must have the characteristics of intelligence, informationization, digitization, networking, and standardization, and it needs to have strong security, stability, practicability, and reliability. operability etc. At the same time, the database of the subway power monitoring system can also be established. In the power monitoring system, the real-time database of the power monitoring system is one of the most important components, and it is also the premise of the operation and development of the power monitoring system. The establishment of the real-time database of the power monitoring system can effectively improve the accuracy, timeliness and stability of the power monitoring system, and provide accurate data support for the subway power monitoring work. The real-time database of the contemporary new subway power monitoring system not only summarizes and integrates and stores the original data in the traditional database, but also keeps pace with the development of the times, including related functions such as compatibility with various types of data materials, and management of data systems at any time, effectively improving It ensures the stability and safety of the subway power monitoring system and creates convenient conditions for the safe operation of the subway.
3. Specific application of power monitoring system in subway
The practical application of the power monitoring system in the subway is mainly based on computer technology, discovering and analyzing the defects in the subway power facility system, and formulating relevant improvement measures, optimizing and combining the functions of the secondary equipment of the substation. The power monitoring system can monitor all the facilities of the substation in real time. It is an integrated automation system that can autonomously coordinate the power equipment of each subsystem. The application of the power monitoring system in the subway has effectively realized the exchange and sharing of information and data inside the subway. The power monitoring system mainly has the following functions: collect information such as switching value, voltage, power, electricity measurement and current of each individual subsystem of the subway station; after the information is collected successfully, transmit the information to the control room of the subway station, and receive the Combat-level control commands to ensure the complete process of power integration and improve the stability of the power system. Under normal circumstances, the power monitoring system is operated and managed by the power dispatcher in the subway control center, and it is maintained by professionals. At present, the monitoring computer of the substation controls the control to realize the complete control of the power equipment and promote Normal operation of maintenance work.
The power monitoring system not only simplifies the operation process of the secondary wiring, greatly improves the safe and stable operation level of the substation, reduces the operation and maintenance cost, but also is an important technical measure to ensure that high-quality computers are provided to users. In the application process of the power monitoring system, the two principles of adopting the automation system and the control mode of the high-voltage substation in the medium and low voltage substations have been realized.
In addition, there may also be some problems during the operation of the unit software at the general control office, such as an abnormal restart of the computer. This phenomenon is usually caused by the loss of the network card driver, or it may be that the Abnormal IP address configuration, or because there is no corresponding network card IP address in the database, these reasons will lead to communication failures. Debugging and maintenance of digital channels cannot be ignored in the application of power monitoring systems. During the debugging process, if the communication of the DC panel is normal, but the AC panel fails, it usually means that the PLC of the AC panel has failed.
The Development Trend of Power Monitoring Technology
Entering the era of global economy, my country's electronic information technology and communication technology have achieved further development, and more new information technologies will be gradually integrated in the subway power monitoring system. From this, it can be seen that the future subway power monitoring technology will achieve high-definition development, Digital development, network development and intelligent development. The application of power monitoring system in the subway will gradually develop towards the direction of network informatization. Using the subway private network transmission platform and communication transmission data, the subway power monitoring system can easily realize remote monitoring. At present, the cutting-edge application of the power monitoring system has achieved preliminary development in the traditional power grid monitoring system in the past. In the future development, it is believed that the power monitoring system will promote the subway power monitoring system to establish an intelligent monitoring and dispatching mode.
Ankerui Power Monitoring System Product Introduction and Selection
overview
Acrel-2000Z power monitoring system is a layered distributed substation monitoring and management system developed by Acrel Electric Co., Ltd. for the voltage level of 35kV and below according to the requirements of power system automation and unattended operation. The system is an open, networked, unitized, and configurable system that integrates protection, monitoring, control, and communication, using power automation technology, computer technology, and information transmission technology. It is suitable for voltages of 35kV and below The substations of urban power grid, rural power grid and user substations at the same level can realize the control and management of the substation position, meet the needs of no one or few people on duty in the substation, and provide a solid guarantee for the safe, stable and economical operation of the substation.
Application place
Office buildings (commercial offices, office buildings of state agencies, etc.)
Commercial buildings (shopping malls, financial institution buildings, etc.)
Transportation buildings (airports, stations, terminal buildings, etc.)
Factory, mining and enterprise construction (petroleum, chemical, cement, coal, steel, etc.)
New energy buildings (photovoltaic power generation, wind power generation, etc.)
system structure
Acrel-2000Z power monitoring system adopts hierarchical distributed design, which can be divided into three layers: station control management layer, network communication layer and field device layer. The networking mode can be standard network structure, optical fiber star network structure, optical fiber ring According to the network structure, the network mode is considered comprehensively according to the user's power consumption scale, the distribution of power equipment, and the area occupied by the user.
Equipment selection
conclusion
This article starts with the composition and function of the power monitoring system, and discusses the application and development prospects of the power monitoring system in the subway, for reference and reference by relevant people.