Abstract:The concept of Internet of Things+intelligent operation and maintenance of distribution network plays an important role in improving the safety and stability of power system operation, and is a necessary foundation for the development of modern power system operation. Not only can it effectively solve the practical operation and management problems of the distribution network system, but it also has a certain helpful role in standardizing the operational standards of distribution network personnel. Therefore, this article mainly analyzes the application of this technology, and through in-depth analysis and research, effectively improves the practical effectiveness of this technology, laying a solid foundation for the application of IoT+distribution network intelligent operation and maintenance technology.

KeywordsIoT+intelligent operation and maintenance of distribution network; technology

In recent years, the effective use of network systems has played a certain driving role in improving the modernization level of various industries. The power system has become one of the important industries influenced by network technology. The concept of IoT+intelligent operation and maintenance system for distribution network has become a powerful support for the stable operation of distribution network system, which is of great significance for further improving the operational efficiency and management security of distribution network system. At the same time, it is an important cornerstone to help power enterprises move towards modernization and standardized development.

1. Strengthen the analysis of traditional operation and maintenance business technology

1.1 Current situation and existing problems of operation and maintenance business

Due to the wide scope and multiple work points involved in traditional distribution network work, the personnel attendance rate has a significant impact on its operation, and there are often problems of delayed detection and handling of defects. At the same time, it is difficult to guarantee the quality of on-site operation and maintenance, and even poses a great threat to the safety, stability, and healthy operation of the distribution network. The main problems currently exist are as follows: (1) Inadequate inspection of equipment availability and the existence of false information. (2) The supervision of cost control in distribution network operation is unfavorable, and problems with abnormalities or hidden dangers have not been resolved in a timely manner. (3) Due to the widespread distribution of distribution network equipment, the inspection was perfunctory and did not conduct targeted checks.

1.2. The demand for on-site intelligent operation and maintenance should be effectively strengthened

For this, it is possible to establish component models commonly used in the distribution system and simulate each set of models independently, so that it can be easily integrated with other new modules (remote workstation work orders, distribution and commissioning fault information, distribution network diagram information, PMIS information, etc.) and third-party tools.

2. The operation and maintenance characteristics of IoT systems

2.1 Resource oriented operation and maintenance

Due to the rapid development of sensors and network technology, it is difficult for an operations team to independently complete the operation and maintenance of such a complex Internet of Things. Therefore, a good operation and maintenance platform should be a resource integration platform. Whether it's engineers, data, or experts, they are all integrated resources. Effective operation and maintenance can only be achieved through resource integration.

2.2. Obvious timeliness of operation and maintenance

Integrating operation and maintenance resources into operation and maintenance services through personalized processes, while ensuring the provision of personalized services to owners, and achieving the sharing of operation and maintenance resources. Operation and maintenance services are an organic process from knowledge to labor to assessment. Improve the stability of IoT application systems through operation and maintenance services. This improvement comes from two aspects: one is through proactive predictive operations and maintenance to complete repairs and replacements before equipment failure; The second is to shorten the downtime of equipment in the event of a malfunction through rapid and effective fault operation and maintenance.

3. Strengthen the practice and research of new technologies

3.1. The application of portable and defective apps should be effectively strengthened

(1) The analysis of the message function module involves uploading and saving on-site videos recorded by personnel through a network server, which then shares this information with the message function module. Therefore, through the message function module, management personnel can view the situation on site in real time and have a detailed understanding of the dynamics on site.

(2) Analyze the defect function module and take photos of the on-site defect situation and record them in detail. Then click the photo option at the bottom of the function module to submit the photos of the on-site defect situation. Based on the pictures and information, the manager can effectively analyze the on-site situation and make timely solutions.

3.2 Accurately identify the attributes of intelligent cable channels

Signage is more suitable for indoor and outdoor cable well environments, and its installation is convenient and reliable. Importing the information of power cable channels into the interior of electronic signage and using close range wireless identification technology can facilitate on-site personnel to accurately read the information of power cable channels.

3.3 Analysis of Intelligent Anti theft and Anti misoperation Linkage System

Traditional anti-theft mainly relies on the management of distribution network duty personnel. This anti-theft operation mode not only has low actual efficiency, but also has poor application effect, making it difficult to achieve the expected anti-theft management effect. The application of IoT technology can effectively solve the above problems. During the operation of an unmanned distribution station system, the distribution network duty personnel can view the fire prevention situation implemented based on IoT devices. At the same time, the system has intelligent anti-theft and anti misoperation linkage processing systematization, which can make judgments and give alarms based on abnormal situations. At the same time, relevant situations can be uploaded to the emergency center, so that the relevant distribution network duty personnel can obtain relevant information and handle it. This can effectively improve the actual operational efficiency of the system. At the same time, the system can automatically perform relevant operations based on the distribution line diagram, allowing relevant personnel to remotely process relevant information. This enables supervision and management of operators while ensuring processing efficiency.

3.4 Actively expand the integration of intelligent auxiliary monitoring

In the anti-theft control system of the distribution station, this technology can also be used to achieve module monitoring. At the same time, the system also has certain auxiliary advantages in the later detection and management of back equipment in the distribution station, which can perceive module operation based on the control of transformers in the distribution station. If the distribution station is damaged by the external environment during operation, it can be stopped in a timely manner to effectively improve its operational safety.

4. The future development direction of IoT+distribution network

At present, a large number of key products and core technologies in China's basic information infrastructure are sourced from abroad, and there are relatively few independently developed products, which are related to China's information security and industry's independent security. Therefore, even if scientific prevention and control measures are adopted in terms of security, there is still a risk of infiltration and control. With the application of IoT technology and the demand for basic information network updates, the development space for automatic and controllable software and hardware IoT is also immeasurable. Accelerating the development of secure and reliable critical software and hardware in the Internet of Things is directly related to the industry's independent capabilities. Therefore, it is imperative to accelerate the promotion. Furthermore, it is the integration of IoT business models. At present, the release of user demands from enterprises and consumers is constrained by the business model of the Internet of Things. Therefore, the business model of the Internet of Things still faces problems such as high investment costs and slow investment recovery, and further exploration and development are needed. Business driven will be a further development based on the Internet of Things platform, with relatively less investment but higher economic benefits obtained. The arrival of the market explosion period depends on third-party IoT application enterprises. When they find their own business model, it is the beginning of IoT development. At the same time, third-party IoT service platforms have become the main commercial form, which is also the mature period of IoT enterprises. So the business model of third-party IoT operating enterprises is the direction of IoT business model. Only by effectively exploring the operation model of third-party IoT platforms can the IoT service market achieve maturity.

5. Selection of Ankerui Substation Operation and Maintenance Cloud Platform and Hardware

5.1 Introduction to Cloud Platform

With the gradual promotion and implementation of the national power grid reform policy, the ordinary offline operation and maintenance mode can no longer meet market demand, and there is an urgent need to support intelligent online operation and maintenance management and service platforms, such as the AcrelCloud-1000 substation operation and maintenance cloud platform According to market demand feedback, the Internet and big data technology are used to provide supporting online operation and maintenance services for power operation and maintenance companies. As a link between operation and maintenance units and power consumption enterprises, the platform monitors the operation status and power data of user distribution systems to provide better operation and maintenance services for customers. The platform provides system overview, power data monitoring, power quality analysis, power consumption statistical analysis and daily/monthly/annual power statistical reports, abnormal early warning, accident alarm and event recording, operation environment monitoring, operation and maintenance patrol dispatching and other functions, and supports multi platform and multi terminal data access.

5.2. Application location:

（1） Electric power operation and maintenance enterprises;

（2） Chain commerce and stores;

（3） Property management companies;

（4） Group enterprises;

（5） The supervisory unit of the institution;

（6） Smart Community,

5.3 Platform Structure

5.4. Main functions of the platform

5.5. Cloud Platform Configuration

On site hardware configuration

6. Conclusion

The application of IoT+intelligent operation and maintenance system for distribution network plays an important role in improving the operational efficiency of distribution network system, and is an important component of modern distribution network system operation. Therefore, in the actual application process, the practical advantages of the system should be fully utilized, and effective operation and management plans should be formulated based on the actual situation of the enterprise and the basic situation of the power system application in the region, so as to ensure that the system can effectively play its important role in the operation of the distribution network system.