The application of communication power centralized monitoring technology in communication power supply marks the maintenance and management of communication power supply from manual maintenance mode to computer centralized monitoring and management mode conversion. Its purpose is to: (1) adapt to the development of communication technology and improve (2) Improve the quality of communication power supply and improve the quality of communication power supply, so that the power supply system has higher reliability and economy; (3) Give full play to the advantages of computer technology, and make the management of power supply equipment to be automated and intelligent. Development; (4) to achieve communication power supply equipment, few people, unattended; (5) improve maintenance efficiency and reduce maintenance costs.
Since the early 1990s, the first set of communication power monitoring system development experiments of the Fuzhou Telecom Bureau has been used as a starting point for power monitoring. It has been 10 years since then, during this period, the power monitoring system is technically and on the scale of system implementation. There has been a great development, and people's understanding of computer centralized monitoring system has been greatly improved. It can be said that the implementation of communication power supply centralized monitoring technology development and monitoring system has entered a new era.
This has created a good environment for the further development of communication power monitoring technology and the further implementation of the monitoring system. But at the same time, we also noticed that many new problems were exposed during the development process, such as the fault diagnosis analysis under the condition that the monitoring system hardware configuration is flexible and the software functions are continuously improved. The performance of data statistics and intelligent direction has not been better developed. In the past, the one-hour meter reading report mode under the manual guard maintenance mode is still reflected in the power monitoring system. The reliability of the monitoring system still exists. . Now we will discuss the development of the monitoring system and the problems exposed during the implementation of the monitoring project.
In terms of functions, in order to achieve the requirements of few and unattended power supply devices, the power monitoring system emphasizes the rapid response to power supply equipment failure events and the accuracy of fault alarms. Now the power monitoring system is constantly expanding on the basis of continuous improvement of basic functions such as remote telemetry, monitoring information query, data storage and recording, real-time historical trend, system configuration, remote operation, password management, and support networking. New intelligent system.
1. Access to smart devices Due to the variety of communication power devices, even for smart devices, even the same type of devices have different protocols. Different manufacturers of power supply devices have more types of protocols. In the implementation process of the monitoring system, in order to make better use of the resources of the smart device, the smart device directly accesses its monitoring system through the conversion of the communication interface and the communication protocol, and the communication interface basically belongs to the hardware conversion between RS232, RS485 and RS422. It is relatively easy to implement, and the conversion of communication protocols has been a thorny problem that has plagued the implementation of monitoring systems in the past. At present, this problem has been initially solved. On the one hand, most power supply equipment manufacturers can actively provide communication protocols for their devices. The Ministry of Posts and Telecommunications provided an agreement to agree on smart devices. Provided conditions for the conversion of the agreement. At present, the communication protocol and the communication interface are converted by a protocol converter. The so-called protocol converter is to connect a device called a protocol converter between the smart device and the station monitoring host. The serial port of the smart device is connected, and the other end is connected with the serial port of the station monitoring host, thereby completing the communication protocol and the communication interface conversion. Simply put, the protocol converter is a microcomputer system with CPU, EPROM, RAM, serial communication port, etc. Protocol conversion generally has two conditions: First, there are at least two serial ports and are respectively associated with the converted smart device. The serial port and the serial station monitor the sovereign serial port to match, and secondly, the communication protocol of the smart device is converted into the station monitoring host protocol, and the conversion software is solidified in the EPROM of the protocol conversion. This method is more effective when multiple smart devices of different protocols are simultaneously connected to one monitoring host. Another conversion method is to put the protocol conversion function in the station monitoring host, but this conversion method is not common in practical applications, because this method is only suitable for connecting a single device protocol smart device to a monitoring device. In the case of the host, if there are too many types of protocols exchanged in the monitoring host, the monitoring host will be overburdened, affecting the normal operation of the monitoring host, and also bring many difficulties and problems to the development of the monitoring host software. In addition, the introduction of a unified communication protocol provides a better solution for intelligent device access.
2. Reliability of monitoring system As new technologies, new processes and high-quality devices are widely used in the manufacture of communication power supply equipment, the reliability and automation of monitoring systems have been greatly improved, such as Non-intelligent devices such as switching power supply equipment, UPS, diesel generator sets, and other non-intelligent devices such as valve-regulated battery packs that are commonly used today have high reliability. This is a centralized monitoring and management of communication power supplies, and realizes few communication power supply devices. Unattended purposes provide better conditions. The reliability of the communication power monitoring system is also crucial, because the monitoring system is reliably established and developed, affecting whether it can improve the maintenance and management level of the communication power supply, improve the quality of the power supply of the letter, and achieve the goal of unattended people. Therefore, on the basis of continuous improvement of the performance of the power monitoring system, it is necessary to pay attention to improving the reliability of the monitoring system. The communication power monitoring system is a large-scale real-time network system.
3. Improve the self-checking function of the monitoring system In order to make the monitoring system play its role more effectively, in addition to constantly improving the basic functions of the monitoring system, it is also necessary to pay attention to the advantages of using computer data processing to develop and improve high-intelligence performance. Fundamentally change the traditional maintenance mode and effectively use monitoring technology.
The implementation of the monitoring system is based on the new maintenance mode, that is, the monitoring and management of the corresponding station is controlled by the area as the monitoring and management center. The station is small and unattended, and the urban monitoring and management center unifies its regional monitoring and management center. Management mode. This kind of computer-based centralized monitoring management and manual watch management are different except for the maintenance management mode. The bigger difference is that the monitoring system implements automatic real-time monitoring of the communication power supply equipment. For example, when the power supply equipment fails, the monitoring system will Make a quick response and report it to the appropriate management center in a timely manner. In order to adapt to this kind of computer monitoring and management, it is required to fundamentally change the traditional maintenance mode. However, we noticed that although the implementation of the monitoring system is based on the new maintenance mode, there are still manual guards for the requirements of the monitoring system. Traces of maintenance management mode, such as the manual watch-reading period in the past, the hourly routine meter reading, in order to regularly view the equipment, and now the computer monitoring system, which is characterized by real-time monitoring of the power supply equipment, However, it is required to submit a one-hour meter reading request, and it is stored and printed in the form of a daily report, and these reports are stored for two to three years. As a result, printing and storing these data in the monitoring system occupies a large resource of the monitoring system, but these data rarely come in handy. In the face of these problems, the monitoring system should be reconsidered in certain functions:
(1) On the basis of continuous improvement of the reliability of the controlled equipment (power supply equipment), improve the safety and reliability of the monitoring system.
(2) Considering the overall control of the controlled equipment and the monitoring system, since the safety and reliability of the power supply equipment and the monitoring system can be basically guaranteed (the reliability index requirements in the power supply equipment are: switch rectifier equipment MTBF>50000h, valve The control battery MTBF>350000h, the AC and DC power distribution equipment reliability index requirements are higher, the monitoring system reliability index requirements are MTBF>100000h), the implementation of the monitoring system should be simple, practical, and highly intelligent, while The accuracy and speed of the alarm and pre-alarm performance of the monitoring system are ensured, and the continuous improvement of the statistical analysis intelligent function makes the function like the one-hour meter reading less meaningful.
(3) Renewing the artificial maintenance concept of people in the past and establishing a new maintenance system.
Therefore, another important task of monitoring system implementation in the future is to fundamentally change the traditional maintenance mode and make more effective use of monitoring technology to make the power monitoring system play a greater role in the maintenance and management of communication power.
4. Monitoring of the network access of the monitoring system It is very difficult to implement the detection of the monitoring system and will be subject to the following conditions:
(1) Testing the monitoring system First, there is a standard basis for testing the items, indicators, testing conditions and testing methods. Although there are some technical requirements for monitoring systems, it is still far from the standard for monitoring system monitoring. not enough.
(2) Compared with general power supply equipment, the monitoring system adopts more computer technology, and emphasizes the network of the system, the real-time performance of the system software and the functionality of the system, thus the practicality and technical performance of the monitoring system. The assessment made it difficult.
(3) The monitoring system is a large-scale real-time network system with certain capacity characteristics (including software capacity characteristics and hardware capacity characteristics). The realization of various performance indicators is meaningful at full capacity operation, as a monitoring system performance indicator. The detection, it is impossible to build a full capacity system.
(4) It is restricted by other aspects such as communication methods and communication conditions.
It can be seen from the above that it is really difficult to implement the detection of the monitoring system. Even so, the monitoring system is tested by a certain method to achieve the maximum approximation, and the performance index of the monitoring system is described and evaluated. It is necessary and meaningful.
Since the early 1990s, the first set of communication power monitoring system development experiments of the Fuzhou Telecom Bureau has been used as a starting point for power monitoring. It has been 10 years since then, during this period, the power monitoring system is technically and on the scale of system implementation. There has been a great development, and people's understanding of computer centralized monitoring system has been greatly improved. It can be said that the implementation of communication power supply centralized monitoring technology development and monitoring system has entered a new era.
This has created a good environment for the further development of communication power monitoring technology and the further implementation of the monitoring system. But at the same time, we also noticed that many new problems were exposed during the development process, such as the fault diagnosis analysis under the condition that the monitoring system hardware configuration is flexible and the software functions are continuously improved. The performance of data statistics and intelligent direction has not been better developed. In the past, the one-hour meter reading report mode under the manual guard maintenance mode is still reflected in the power monitoring system. The reliability of the monitoring system still exists. . Now we will discuss the development of the monitoring system and the problems exposed during the implementation of the monitoring project.
In terms of functions, in order to achieve the requirements of few and unattended power supply devices, the power monitoring system emphasizes the rapid response to power supply equipment failure events and the accuracy of fault alarms. Now the power monitoring system is constantly expanding on the basis of continuous improvement of basic functions such as remote telemetry, monitoring information query, data storage and recording, real-time historical trend, system configuration, remote operation, password management, and support networking. New intelligent system.
1. Access to smart devices Due to the variety of communication power devices, even for smart devices, even the same type of devices have different protocols. Different manufacturers of power supply devices have more types of protocols. In the implementation process of the monitoring system, in order to make better use of the resources of the smart device, the smart device directly accesses its monitoring system through the conversion of the communication interface and the communication protocol, and the communication interface basically belongs to the hardware conversion between RS232, RS485 and RS422. It is relatively easy to implement, and the conversion of communication protocols has been a thorny problem that has plagued the implementation of monitoring systems in the past. At present, this problem has been initially solved. On the one hand, most power supply equipment manufacturers can actively provide communication protocols for their devices. The Ministry of Posts and Telecommunications provided an agreement to agree on smart devices. Provided conditions for the conversion of the agreement. At present, the communication protocol and the communication interface are converted by a protocol converter. The so-called protocol converter is to connect a device called a protocol converter between the smart device and the station monitoring host. The serial port of the smart device is connected, and the other end is connected with the serial port of the station monitoring host, thereby completing the communication protocol and the communication interface conversion. Simply put, the protocol converter is a microcomputer system with CPU, EPROM, RAM, serial communication port, etc. Protocol conversion generally has two conditions: First, there are at least two serial ports and are respectively associated with the converted smart device. The serial port and the serial station monitor the sovereign serial port to match, and secondly, the communication protocol of the smart device is converted into the station monitoring host protocol, and the conversion software is solidified in the EPROM of the protocol conversion. This method is more effective when multiple smart devices of different protocols are simultaneously connected to one monitoring host. Another conversion method is to put the protocol conversion function in the station monitoring host, but this conversion method is not common in practical applications, because this method is only suitable for connecting a single device protocol smart device to a monitoring device. In the case of the host, if there are too many types of protocols exchanged in the monitoring host, the monitoring host will be overburdened, affecting the normal operation of the monitoring host, and also bring many difficulties and problems to the development of the monitoring host software. In addition, the introduction of a unified communication protocol provides a better solution for intelligent device access.
2. Reliability of monitoring system As new technologies, new processes and high-quality devices are widely used in the manufacture of communication power supply equipment, the reliability and automation of monitoring systems have been greatly improved, such as Non-intelligent devices such as switching power supply equipment, UPS, diesel generator sets, and other non-intelligent devices such as valve-regulated battery packs that are commonly used today have high reliability. This is a centralized monitoring and management of communication power supplies, and realizes few communication power supply devices. Unattended purposes provide better conditions. The reliability of the communication power monitoring system is also crucial, because the monitoring system is reliably established and developed, affecting whether it can improve the maintenance and management level of the communication power supply, improve the quality of the power supply of the letter, and achieve the goal of unattended people. Therefore, on the basis of continuous improvement of the performance of the power monitoring system, it is necessary to pay attention to improving the reliability of the monitoring system. The communication power monitoring system is a large-scale real-time network system.
3. Improve the self-checking function of the monitoring system In order to make the monitoring system play its role more effectively, in addition to constantly improving the basic functions of the monitoring system, it is also necessary to pay attention to the advantages of using computer data processing to develop and improve high-intelligence performance. Fundamentally change the traditional maintenance mode and effectively use monitoring technology.
The implementation of the monitoring system is based on the new maintenance mode, that is, the monitoring and management of the corresponding station is controlled by the area as the monitoring and management center. The station is small and unattended, and the urban monitoring and management center unifies its regional monitoring and management center. Management mode. This kind of computer-based centralized monitoring management and manual watch management are different except for the maintenance management mode. The bigger difference is that the monitoring system implements automatic real-time monitoring of the communication power supply equipment. For example, when the power supply equipment fails, the monitoring system will Make a quick response and report it to the appropriate management center in a timely manner. In order to adapt to this kind of computer monitoring and management, it is required to fundamentally change the traditional maintenance mode. However, we noticed that although the implementation of the monitoring system is based on the new maintenance mode, there are still manual guards for the requirements of the monitoring system. Traces of maintenance management mode, such as the manual watch-reading period in the past, the hourly routine meter reading, in order to regularly view the equipment, and now the computer monitoring system, which is characterized by real-time monitoring of the power supply equipment, However, it is required to submit a one-hour meter reading request, and it is stored and printed in the form of a daily report, and these reports are stored for two to three years. As a result, printing and storing these data in the monitoring system occupies a large resource of the monitoring system, but these data rarely come in handy. In the face of these problems, the monitoring system should be reconsidered in certain functions:
(1) On the basis of continuous improvement of the reliability of the controlled equipment (power supply equipment), improve the safety and reliability of the monitoring system.
(2) Considering the overall control of the controlled equipment and the monitoring system, since the safety and reliability of the power supply equipment and the monitoring system can be basically guaranteed (the reliability index requirements in the power supply equipment are: switch rectifier equipment MTBF>50000h, valve The control battery MTBF>350000h, the AC and DC power distribution equipment reliability index requirements are higher, the monitoring system reliability index requirements are MTBF>100000h), the implementation of the monitoring system should be simple, practical, and highly intelligent, while The accuracy and speed of the alarm and pre-alarm performance of the monitoring system are ensured, and the continuous improvement of the statistical analysis intelligent function makes the function like the one-hour meter reading less meaningful.
(3) Renewing the artificial maintenance concept of people in the past and establishing a new maintenance system.
Therefore, another important task of monitoring system implementation in the future is to fundamentally change the traditional maintenance mode and make more effective use of monitoring technology to make the power monitoring system play a greater role in the maintenance and management of communication power.
4. Monitoring of the network access of the monitoring system It is very difficult to implement the detection of the monitoring system and will be subject to the following conditions:
(1) Testing the monitoring system First, there is a standard basis for testing the items, indicators, testing conditions and testing methods. Although there are some technical requirements for monitoring systems, it is still far from the standard for monitoring system monitoring. not enough.
(2) Compared with general power supply equipment, the monitoring system adopts more computer technology, and emphasizes the network of the system, the real-time performance of the system software and the functionality of the system, thus the practicality and technical performance of the monitoring system. The assessment made it difficult.
(3) The monitoring system is a large-scale real-time network system with certain capacity characteristics (including software capacity characteristics and hardware capacity characteristics). The realization of various performance indicators is meaningful at full capacity operation, as a monitoring system performance indicator. The detection, it is impossible to build a full capacity system.
(4) It is restricted by other aspects such as communication methods and communication conditions.
It can be seen from the above that it is really difficult to implement the detection of the monitoring system. Even so, the monitoring system is tested by a certain method to achieve the maximum approximation, and the performance index of the monitoring system is described and evaluated. It is necessary and meaningful.
Solar On and Off Grid Inverter
Grid Tie Inverter,Solar Pump Inverter,On Grid Solar Inverter,On And Off Grid Inverter
Jinan Xinyuhua Energy Technology Co.,Ltd , https://www.xyhenergy.com