Overview

AcrelEMS Zero Carbon Rural Source Network Load Storage Integrated Energy Efficiency Management PlatformDividing enterprise electricity consumption into source, grid, load, storage, and charging can monitor the overall power supply and distribution status of the enterprise and display it in a centralized system, making it easier for management personnel to manage and better maintain the enterprise.

Zero carbon rural source network load storage integrated energy efficiency management platformThe system realizes overall monitoring from 35kV power distribution to 0.4kV power consumption side, meeting the access requirements of photovoltaic system, wind power generation, energy storage system, and charging piles, and conducting data collection and analysis around the clock. It is a management system that integrates monitoring system and energy management. The system aims to optimize economic operation on the basis of safety and stability, promote the application of renewable energy, improve the stability of power grid operation, and compensate for load fluctuations; Effectively achieve demand management on the user side, eliminate day night peak valley differences, smooth loads, improve the operational efficiency of power equipment, and reduce power supply costs. Providing a new solution for safe, reliable, and economical operation of enterprise microgrid energy management.

1. Basic support platform

Platform Architecture

Figure 3-1 AcrelEMS3.0 Platform Architecture Diagram

On site communication with the local system and platform is achieved through Ethernet or 4G. The local system is built on the customer's own configured industrial computer, while the platform is built on a cloud server or a server configured by the customer. After the setup is completed, customers can access and operate the platform through authorized accounts by logging into web pages and mobile apps from any location that can connect to the server.

The platform is compatible with both single and multiple site access and adopts a B/S+C/S architecture. It is physically divided into four layers: device layer, network communication layer, station control layer, and platform layer.

On site equipment layer: mainly connected to various sensors used for measurement, protection, control, and governance in the network, including charging piles, multifunctional meters, anti backflow devices, power quality monitoring, reactive power compensation devices, microcomputer protection and measurement devices, arc protection devices, as well as third-party inverters, energy storage cabinets, etc.

Network communication layer: includes on-site intelligent gateways, network switches, and other devices. The intelligent gateway actively collects data from on-site device layer devices, performs protocol conversion, stores data, and uploads the data simultaneously to the station control layer system and platform through the network. Intelligent gateway can store data locally in case of network failure, and continue uploading data from the interrupted location when the network is restored, ensuring that server-side data is not lost.

Station control layer: The communication network adopts standard Ethernet and TCP/IP communication protocols, and the physical media can be optical fiber, Ethernet cable, shielded twisted pair cable, etc. Local station control layer system support Modbus RTU、Modbus TCP、CDT、IEC60870-5-101、IEC60870-5-103、IEC60870-5-104、MQTT Waiting for communication protocols. The system can develop and automatically execute control strategies such as planning curves, peak shaving and valley filling, demand control, new energy consumption, orderly charging, dynamic expansion, backup power supply, etc., achieving integrated intelligent collaboration of source, network, load, and storage internally.

Platform layer: The platform can be deployed on local, private, and public clouds, including application servers, web servers, and data servers. Generally, application servers and web servers can be configured together. The platform provides two access methods, WEB and APP, with functions including substation comprehensive automation system, distributed photovoltaic, wind power, energy storage, charging piles, power monitoring, power management, electrical safety, power quality, energy consumption analysis, equipment management, operation and maintenance management, user reporting, etc. It mainly realizes remote centralized monitoring and control, energy efficiency analysis, energy consumption and revenue data statistics, strategy issuance, etc., and assists users in participating in demand response and electricity market transactions externally.

1.1 Distributed Photovoltaic Solution Series

According to the requirements for connecting photovoltaic systems to the distribution network, photovoltaic power generation systems with a voltage level of 10kV need to be equipped with relay protection and safety automatic devices, such as line protection, safety automatic devices, anti islanding protection (including anti backflow), UPS power supply and other equipment; To meet the requirements of scheduling automation, it is necessary to configure remote control systems, timing equipment, and safety protection devices; To meet the system's electricity statistics, it is necessary to configure energy metering devices, such as gateway meters, grid connected meters, self use meters, and collection terminals; To meet the requirements of grid connected power quality, it is necessary to install power quality monitoring devices; Simultaneously establish communication equipment for the entire photovoltaic system to ensure interconnectivity and manageability of the system.

Install a distributed photovoltaic monitoring system in the electrical monitoring room, which collects real-time data from secondary equipment such as microcomputer protection devices, power quality monitoring, metering, and remote control systems through communication management machines and network switches, to achieve comprehensive monitoring and automated management of photovoltaic power generation systems in various regions. At the same time, a communication system, a timing system, and a remote control system are configured in the monitoring room to meet the internal communication and superior scheduling needs of the system. An integrated power supply system is configured to provide stable and reliable power for the operation of important equipment such as secondary devices and monitoring hosts, achieving safe and stable operation of the entire photovoltaic system.

Figure 4-1 Architecture of Distributed Photovoltaic System

1.1.1 Photovoltaic comprehensive signboard

Display the geographical location of all distributed photovoltaic stations, show the overall power station capacity, real-time power generation, daily, monthly, and annual power generation and their revenue. Facilitate users to conduct an overall analysis of the power station.

The map supports zooming in and out, with quick response.

Support switching between map lists.

1.1.2 Power Station Operation Monitoring

Display irradiance, environmental temperature and humidity, wind speed, daily, monthly, and annual power generation, power curve, and inverter parameters. Help users understand the basic information and operational status of the current site.

Real time display of inverter power generation.

1.1.3 Inverter operation monitoring

Monitor the operating status and power generation of a single inverter, and display real-time data on both the AC and DC sides.

Real time refreshing of power data with rapid response.

1.1.4 Power generation statistics of the power station

Provide power generation statistics report for the power station.

Support switching between reports and pie charts.

Support switching between daily, monthly, and yearly formats.

L supports exporting to EXCEL format.

1.1.5 Inverter power generation statistics

Provide statistical reports on inverter power generation.

Support switching between table graphics.

Support switching between daily, monthly, and yearly formats.

L supports exporting to EXCEL format.

1.1.6 Photovoltaic power station distribution monitoring

Draw a primary photovoltaic distribution diagram for the photovoltaic station. Display the power generation network structure, inverters, and environmental parameters.

Real time data refresh and fast response.

SVG graphics zoom in and out without distortion.

1.1.7 Inverter Curve Analysis

Integrate the DC side data, irradiance, and AC side data for analysis. Support switching between multiple inverters and customizable date queries.

1.1.8 Photovoltaic Revenue Report

Calculate the revenue generated by photovoltaic power generation for a single enterprise based on peak and valley power generation revenue and grid connected revenue.