4 Application of intelligent power system in electrical energy saving

In order to improve the efficiency of power supply management, the structure of intelligent power monitoring system must be laid. This is because the power system design of intelligent power overhead system is aimed at energy saving, and has a huge energy saving application space. Moreover, the design of intelligent software has the characteristics of flexibility and advancement, so the cost is reduced while the system is running.

The intelligent power monitoring system has the characteristics of hierarchical monitoring and can effectively monitor each point. In the construction of the system, through the automatic operation of the intelligent monitoring system, the relevant data and output are recorded, and combined with the characteristics of the building and the power system supply situation for intelligent supervision, to ensure that the monitoring system communication connection in the state of low energy consumption, to achieve the goal of energy saving.

During the operation of the system, the advantage of intelligent monitoring system is that it can analyze the accident location and failure. Record relevant data in order. Therefore, the failure in the power system, no matter it happens often or occasionally, can not escape the monitoring range of the intelligent power monitoring system. Moreover, even potential problems can be found in time through the analysis of intelligent monitoring data, and the risk is estimated in advance and the maintenance and maintenance plan is proposed, realizing the centralized management and control, prolonging the life of the machine, and achieving the effect of energy saving.

The structural design of intelligent buildings should meet the requirements of reducing cost and green building, and achieve the sustainable development goals of high efficiency, low energy consumption, low pollution, energy saving and environmental protection. For Chinese construction industry, equipment operation consumption is the main capital expenditure item. It is one of the main functions of power monitoring system to reduce the traditional energy consumption to the lowest level, improve efficiency and reduce expenditure through the operation of intelligent power system. By improving management efficiency, providing reliable and safe electricity, reducing electricity costs, reducing equipment investment, etc., the goal of energy conservation is achieved. For example, the electrical energy saving of powerLogic power monitoring system, a well-known international brand, is reflected in the following aspects: through the data analysis of power parameters, the establishment of the power consumption pattern of the system and equipment, real-time detection of power consumption anomalies; Take effective measures for equipment transformation to avoid power loss; Optimize the distribution system, for example, by centrally controlling public lighting to reduce power costs, and monitor, distribute and measure power in the distribution system to avoid power waste.

5.1 Overview

For the user substation (generally 35kV and below voltage level), through the microcomputer protection device, switch cabinet comprehensive measurement and control device, wireless electrical contact temperature measurement products, power quality online monitoring device, distribution room environment monitoring equipment, arc protection device and other equipment to form a comprehensive automatic comprehensive monitoring system. It realizes the safe operation and overall management of substation, distribution and electricity consumption. The monitoring range includes user substations, switching-closing stations, substations and distribution rooms.

Acrel-2000Z power monitoring system is a layered distributed substation monitoring and management system developed by Ankerui Electric Co., Ltd. for 35kV and below voltage levels according to the requirements of power system automation and unattended. The system is an open, networked, unitized and configurable system that integrates protection, monitoring, control, communication and other functions with the application of power automation technology, computer technology, network technology and information transmission technology. It is suitable for urban grid, rural grid substations and user substations with voltage levels of 35kV and below, and can realize comprehensive control and management of substations. Meet the substation unmanned or few people on duty needs, for the substation safety, stability, economic operation to provide a solid guarantee.

5.2 Application Site

It is suitable for the engineering design, construction and operation maintenance of power supply and distribution automation system for 35kV and below users in rail transit, industry, buildings, schools and commercial complexes.

5.3 System Architecture

Acrel-2000Z power monitoring system adopts hierarchical and distributed design, which can be divided into three layers: station control management layer, network communication layer and field equipment layer. The networking mode can be standard network structure, optical fiber star network structure and optical fiber ring network structure. The networking mode is comprehensively considered according to the user’s power consumption scale, power equipment distribution and land area.