The new-generation distribution automation system master station (DF8003D) focuses on large-scale operation and maintenance as its primary application. It complies with the State Grid's latest distribution master station system architecture standards and adopts a fully integrated prefecture-county deployment approach. Designed in accordance with IEC 61968/61970 standards, the system enables data sharing with multiple systems such as EMS and PMS2.0 through an information exchange bus. It supports external exchange of graphical model data, real-time data, and historical data, facilitating vertical and horizontal data integration across all levels and layered applications. This creates a closed-loop management process for distribution network operation monitoring and dispatching operations, supporting lean management in areas such as distribution network dispatching operation, production O&M management, condition-based maintenance, defect and hidden risk analysis, and providing data support for distribution network planning and construction.

Dongfang Electronics' distribution automation business began in 1995, making it one of the first professional manufacturers to enter the distribution automation field in China. Dongfang Electronics has cultivated deep expertise in this sector, focusing on high-value technologies in distribution automation and distribution management systems. With over 20 years of accumulated industry experience, we continuously innovate to provide solutions for high power supply reliability. We enable synergistic interaction between source, grid, load, and storage. Building upon rapid fault isolation and self-healing for traditional distribution networks, we facilitate the seamless integration of distributed energy resources (DERs) with the distribution grid, enhancing the capacity to accommodate renewable energy. Leveraging holographic equipment awareness and intelligent diagnostic strategies, we facilitate the full lifecycle management of distribution network assets and establish a panoramic digital operation and maintenance (O&M) system. By employing technologies such as high-precision sensing, low-power consumption, and environmentally friendly insulating media, we support zero-carbon initiatives while comprehensively enhancing the distribution network's capabilities for proactive status awareness and autonomous decision-making and control.

In accordance with the design, development, and implementation specifications of the new-generation electricity consumption information collection system, and addressing the construction needs of the power industry for precise metering, safe electricity consumption, new power systems, and new power equipment, we aim to develop advanced applications based on the new-generation electricity consumption information collection system. This includes building advanced applications such as online monitoring of gateway energy meters, the "Four Capabilities" of distributed power sources, and the construction of premium demonstration transformer areas, meeting the power enterprises" requirements for enhancing metering technical supervision capabilities, strengthening metering support capabilities, and deepening lean metering management models.

The fault handling solution for "adaptive smart feeder automation" follows the principle of balancing "reliable power supply" and "rapid handling," further optimizing the fault handling strategy for local feeder automation. The solution does not rely on communication or the master station. It completes fault handling and self-healing recovery through local coordination of switches, with fewer switch actions and shorter outage times. It effectively enhances the distribution network's ability to cope with extreme weather conditions and disaster resistance, advancing the construction of a modern smart distribution network. Since the large-scale application of integrated primary and secondary circuit breakers, it has provided the equipment foundation for optimizing local FA. The switches have built-in zero-sequence voltage and zero-sequence current, complete short-circuit and ground fault protection functions, and fast opening and closing action capabilities.

The new energy "Four Capabilities" intelligent gateway is a novel smart edge gateway developed to meet the requirements of distributed energy being "observable, measurable, adjustable, and controllable" in the new power system. It is primarily used to connect distributed energy equipment with the grid system, enabling functions such as data acquisition, processing, remote control, and remote adjustment for distributed photovoltaic, energy storage, and other new energy equipment. This enhances the grid's capacity and regulation capability for new energy integration, achieving low-maintenance or maintenance-free grid connection for low-voltage distributed photovoltaic systems, plug-and-play functionality, and reduced grid connection costs.

The new-generation standardized fully aviation-plug station room power distribution automation terminal is a standardized high-performance large-capacity station terminal specially developed for station rooms in response to the current lack of standards for station room power distribution terminals. The device has detailed standardized design requirements in terms of overall layout, core units, indicator lights and their meanings, external interfaces, LCD operations, and maintenance software. Simplify the installation method and reduce the difficulty of operation and maintenance to meet the on-site requirements for constructing and managing distribution automation terminals. At the same time, adopt high-performance domestic platform hardware and software design to achieve independently controllable devices, meeting the requirements for grid intelligence and stability.

Actively serving the State Grid's "dual carbon" process and accelerating the digital transformation of the grid, Dongfang Electronics Corporation has innovatively proposed a digital station terminal architecture and high-protection design for ring main units, launching a domestic digital high-protection environmentally friendly gas-insulated ring main unit. This utilizes local digital technology to enhance the reliability, compactness, and green low-carbon features of the ring main unit. The digital terminal adopts a domestic hardware and software platform, with the main control unit equipped with an 8-inch color touch screen, and the digital sensing unit being CPU-free and maintenance-free. It features 5G-based differential protection and intelligent distributed functions, fiber-based differential protection, and a self-developed adaptive strategy for small current grounding fault detection, with a single-phase grounding fault judgment accuracy exceeding 90%.

Frequent grounding faults in distribution networks not only endanger personal and equipment safety but also severely reduce power supply reliability and may trigger fires in urban areas, towns, rural areas, forests, grasslands, mountainous regions, and power cables. Currently, some existing distribution terminals lack single-phase grounding fault detection functionality. Dongfang Electronics Corporation has developed a single-phase grounding alarm device based on the ΔI_PAM principle (three-phase current sudden variable phase asymmetry principle, requiring only ABC three-phase currents), enabling single-phase grounding function upgrades for existing 10kV distribution network equipment without power interruption.

The E9361-C0 Distributed Power Integrated Control Terminal is primarily used in application scenarios such as distributed photovoltaic systems, transformer areas, and microgrid control. It collaborates with group dispatch and control systems, as well as source-grid-load-storage master stations, to achieve the functional requirements of observability, measurability, controllability, and adjustability for distributed power grid connection points.

The medium-voltage IoT distribution terminal (XTU) is a new-generation distribution automation smart terminal based on distribution IoT technology. While implementing traditional distribution terminal functions such as fault identification, protection, and self-healing in distribution networks, this explores utilizing edge computing technology within an IoT architecture to achieve equipment status monitoring and health assessment, line fault early warning and precise location, quantitative analysis of line power quality and pollution source location, and wide-band synchronous measurement of low-frequency oscillations and disturbances in new distribution networks. The goal is to meet the application requirements of both distribution network dispatch control and operation & maintenance.