Application of Acrel-3000 in Hong Kong smart campus project

1. Project background

In order to promote the construction of green campuses, the Electrical and Mechanical Services Department of the Hong Kong Special Administrative Region Government launched a tender to carry out energy-saving renovations for public schools in Hong Kong. A local technology company in Hong Kong learned about our company's products and solutions through the Internet, and hoped to cooperate with our company to participate in the construction of a real-time energy monitoring system.

2. Project requirements

In the government's bidding documents, the main requirements for the energy real-time monitoring system are as follows:

* Monitor school energy consumption, including teaching buildings , administrative buildings , auditoriums and sports buildings, etc. Electric energy consumption should be subdivided into ventilation , air conditioning, lighting and other uses, etc.;

*It is necessary to display the power consumption of the entire school, floors, rooms and main electrical equipment over a period of time through bar charts , line charts, pie charts and other charts . When abnormal power consumption is found, an alarm should be generated . The system also needs to realize carbon emission statistics and carbon footprint analysis;

* The system needs to be developed based on HTML5 , allowing users to access remotely through browsers on personal computers, mobile phones, smart TVs or tablets. It should support Chinese and English versions , have a friendly graphical user interface , and the design of Ul is vivid and attractive to students ;

* The data should be kept safely for at least 36 months , and the energy data upload frequency should not exceed 15 minutes;

* The system should allow multiple users to log in at the same time, and set unique login names and passwords for different users . The data should be accessible remotely, and the access rights are designated by the school administrator ;

* The system should provide Modbus - TCP, BacNet or OPC protocol for the third-party system to call data;

* The data collector of the system should adopt modular design, adopt guide rail installation, low power consumption, support RS485 interface , Ethernet interface , IO interface, support 4-20mA analog signal acquisition, support carbon dioxide sensor , humidity sensor , temperature sensor , weather station information collection through Modbus-RTU, Modbus-TCP;

Since the main requirements of the project are the monitoring and management of electric energy, the Acrel-3000 electric energy management system was finally selected to participate in the project bidding. After online communication, product sample delivery, software customization development, and on-site testing, the final system met the requirements of the bidding and successfully won the bid.

3. Project significance

4. Project summary

This project was able to successfully win the bid and acceptance under so many unfavorable conditions, and the client is still very appreciative. There are the following reasons to share.

1) The comprehensive functions of the Acrel-3000 power management system are the guarantee for winning the bid and acceptance of the project

n Acrel-3000 power management system not only meets the real-time requirements of power distribution monitoring, but also has powerful power statistics and analysis functions.

n The system supports Simplified Chinese, Traditional Chinese, and English display at the same time to meet the language usage habits of different groups of people.

n The system is developed based on HTML5 and supports access anytime and anywhere through a browser.

n The system sets up three roles according to the government mechanical and electrical department, school staff , and students of different classes . Different roles have different operation permissions and data access permissions, which meets the requirements for authority management in the bidding documents.

n This project uses Wifi wireless networking to reduce wiring and reduce implementation costs.

n The system debugging process is standardized and easy to use. After remote guidance, the customer will implement it locally.

2) It is very important to choose the right solution to reduce costs and increase efficiency

The project collects data through the ANet gateway. Since the ANet gateway has the functions of local storage and resumed transmission, it can ensure that the data will not be lost even when the wireless network fluctuates, the server is shut down or restarted , which reduces maintenance and after-sales costs and improves user satisfaction.

3) Professional ability and enthusiastic service are the basis of long-term cooperation

It is the first time for a user to cooperate with us, and they are not familiar with our instruments and systems, and the project was implemented during the epidemic. The company could not send personnel to on-site training and debugging, and could only use remote guidance and video communication. It was necessary to continuously respond to customer needs and questions in real time, and guide customers to master system debugging methods and software usage methods. In the end, we were recognized by customers with our professional ability and enthusiastic service, and we are willing to cooperate with us for a long time.

At present, the Acrel-3000 power management system has been successfully deployed in 15 schools in Hong Kong, accumulatively connected to more than 2,000 power monitoring points. After the epidemic ended, customers came to visit the company as soon as possible, expressing their intention for more in-depth cooperation. Customers' recognition of our system and satisfaction with our services are our biggest motivation for continuous improvement!

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