Split core CT can be used in comprehensive scenarios of IOT

 

In order to accelerate the construction of a new energy system and strive to achieve accurate load control and refined user management, in accordance with the guiding principles of “government-led, power grid organization, government-enterprise collaboration, and user implementation”, municipal/county power load management centers have been established in many places. This marks that various places have taken a substantive and key step in the digital reform of the energy field. It is of great significance to accelerate the construction of a new energy system, implement the energy big data strategy, develop the digital economy, and build smart cities .

 

 

This paper combines the requirements of the new urban smart energy system for the energy digital system and energy digital technology to provide a preliminary solution for energy interconnection, interaction and coordination, and continuously promote the construction of a new energy system.

 

 

 

 

Overview of Integrated Smart Energy System

The traditional energy management system model, which monitors electricity and other energy sources around a single entity, can no longer meet the needs of the new energy system. The scientific and systematic integrated smart energy management adopts a big data information integration model, which not only realizes the maximization of new energy consumption and the improvement of energy utilization efficiency, but also realizes the transformation of single equipment energy saving to intelligent and systematic directions. The integrated smart energy management system realizes the collection, monitoring, prediction and management of data from each unit of the energy system, thus laying a good foundation for high-quality energy utilization and service provision. The purpose of building power load centers in various places is the same. Based on the dynamic energy price mechanism, the integrated smart energy system takes the power grid, distributed generation, energy storage system, adjustable load, and electric vehicle charging piles as the physical basis, and automatically adjusts according to the power demand at different stages to ensure the stable operation of the power system. In general, the integrated smart energy management system has become an important part of the construction of the new energy system.

 

 

 

 

Overall architecture of integrated smart energy management system

There are many participants in the comprehensive smart energy management system, including power grids, energy service providers, large, medium, small and micro energy-consuming enterprises and individuals. This is a system that requires the participation of multiple parties, and the system needs to have good compatibility and ease of use. First of all, the design of the system needs to support the application of multiple industrial interfaces, such as third-party system interfaces, intelligent sensing device interfaces, and energy-consuming equipment. Secondly, the system needs to support convenient data acquisition and interaction, including mobile APPs, applets, and WEB terminals. In addition, the smart devices that need to be connected to the system are widely distributed and large in number. According to actual needs and network conditions, wired and wireless hybrid networking modes can be implemented, which can realize the collection, analysis, and automated control and management of data on various energy sources.

 

 

 

 

Integrated Smart Energy Management System Software Architecture

The software architecture mainly includes the perception layer, data layer, application layer, and presentation layer. The perception layer is composed of on-site protection, measurement, control equipment and other subsystems, and transmits data through wired/wireless methods* to the data center; the center is responsible for data collection, data processing, storage and interaction, and distributes it to various application layers; the application layer uses data from multiple angles such as energy supply, energy management, load management, energy consumption analysis and prediction, energy operation and maintenance according to user needs, and displays it to different users to complete the energy management function. The comprehensive intelligent management system can realize real-time collection and monitoring of various types of energy medium data, and use digital technology to more intuitively display and regulate energy data, so that energy can be better utilized.

 

 

The enterprise microgrid energy efficiency management system provides energy efficiency management solutions based on industry characteristics, supports wired/wireless solutions to access various smart devices, and provides a variety of third-party system interface protocols, integrating enterprise microgrid power monitoring, energy consumption statistics, power quality analysis and management, intelligent lighting control, major energy-consuming equipment monitoring, charging pile operation management, distributed photovoltaic monitoring, energy storage management and other functions. Through one platform, the enterprise power grid can be centrally monitored, dispatched and operated in a unified manner to meet the enterprise’s requirements for reliable, safe, economical and orderly electricity use. The platform supports switching between Chinese and English, and has been applied to user-side energy management and power operation and maintenance platforms in multiple industries and regions. A single platform has accessed data from more than 1,600 user substations, providing energy analysis and operation and maintenance management functions.

Energy efficiency management of IOT grids

 

 

 

 

Power monitoring

Real-time monitoring and control of the electrical parameters, operating status, and contact temperature of distribution-related equipment such as transformers, circuit breakers, DC panels, busbars, reactive power compensation cabinets, and cables in the company’s high and low voltage power distribution systems. The power quality of the main circuits of the company’s microgrid is monitored and managed, and faults are handled in a timely manner and alarm information is issued to improve the company’s power supply reliability.

 

 

 

 

Energy consumption analysis

Collect the company’s electricity, water, gas and other energy consumption, conduct classified and itemized energy consumption statistics, calculate the energy consumption data and trends per unit area or unit product, conduct energy efficiency diagnosis based on the energy efficiency of major energy-consuming equipment, calculate the company’s carbon emissions, and provide data support for the company to formulate carbon peak and carbon neutrality routes.

                                                               IOT Energy consumption analysis

 

 

 

 

 

Lighting Control

The intelligent lighting control function can realize timing control, light sensing control, scene control, dimming control, etc. according to the enterprise situation, and combine with infrared sensors and ultrasonic sensors to realize that the lights turn on when people come and turn off when people leave. It can also realize centralized control according to the system’s control strategy, saving lighting electricity for the enterprise.

IOT Lighting Control

 

 

 

 

 

 

Photovoltaic monitoring

Monitor the operation of the enterprise’s distributed photovoltaic power stations, including inverter operation data, photovoltaic power generation efficiency analysis, power generation and revenue statistics, and photovoltaic power generation power control.

 

 

 

 

 

 

Energy storage management

Monitor the operation of the energy storage system, battery management system (BMS) and energy storage converter (PCS), including operation mode, power control mode, preset value information such as power, voltage, current, frequency, energy storage battery charging and discharging voltage, current, SOC, temperature, set the charging and discharging strategy of the energy storage system according to the peak and valley characteristics of the enterprise and the fluctuation of electricity price as well as the instructions of the upper platform, control the charging and discharging of the energy storage system, realize peak shaving and valley filling, and reduce the electricity cost of the enterprise.

 

 

 

 

 

 

Charging pile operation management

Monitor the operating status of the company’s charging piles, provide charging pile fee management and status monitoring functions, and adjust the charging power of the charging piles according to changes in the company’s load rate and the dispatch instructions of the virtual power plant, so that the company’s microgrid can operate stably and safely.

IOT Charging pile operation management

 

 

 

 

 

Data collection and data monitoring

Real-time monitoring of power parameters such as voltage and current of each distribution cabinet, realizing remote measurement, remote signaling and remote control. Real-time monitoring of environmental parameters such as temperature and humidity, smoke and water intrusion of each distribution room. Monitor the operating status and energy parameters of the transformer, calculate the loss, find the economic operation range and reduce energy loss.

 

 

 

 

 

 

Energy consumption statistics analysis

It mainly collects statistics on energy consumption data, energy consumption sub-items, regional energy consumption and energy consumption indicators, etc. It also includes the total energy consumption ratio, which refers to the percentage of the actual energy consumed in the total energy, and uses various graphics to express it for comprehensive energy consumption analysis.

 

 

 

 

Electrical and Fire Safety Management

Connect electrical fire detectors, wireless temperature sensors, intelligent circuit breakers and other equipment to monitor and manage fire hazard parameters such as residual current and cable temperature of the power distribution circuit in real time. Install fire water level meters in fire pools and fire water tanks to detect changes in fire water levels; install fire water pressure meters in fire water pipes and sprinklers to detect the pressure of fire pipes. Install independent smoke or combustible gas detectors in indoor places such as homes, hotels, and apartments where smoke and combustible gases exist to detect whether these places have smoke and combustible gases.

IOT Electrical and Fire Safety Management

 

 

 

 

 

Comprehensive Smart Energy Management Sensing Equipment

In addition to software, the comprehensive smart energy management system also has on-site sensors, intelligent gateways and other equipment, forming a complete “cloud-edge-end” digital system, including high and low voltage power distribution comprehensive protection and monitoring products, power quality online monitoring devices, power quality management, lighting control, new energy charging piles, electrical fire protection solutions, etc., which can provide one-stop service capabilities for the digitalization of enterprise microgrids.

 

 

 

 

5 Conclusion

The design and application of the comprehensive smart energy management system provides solutions for the digital management of energy in the new energy system and provides technical support for the connection of massive data in the system. The enterprise microgrid energy efficiency management system and energy Internet of Things platform cooperate with Ankerui sensing equipment to provide personalized energy management solutions for large, medium, small and micro users in various industries, support users’ digital monitoring of energy systems and multi-source automatic collaborative management, help users improve energy use safety and efficiency, and contribute to the establishment of a stable and safe new energy system.

 

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