# Modeling Intelligent Control Switch IEC 61850 Based Substation Automation Communication
## 1 Introduction  
The electrical power grid is a significant part of our daily life activities, as well as industry development. Therefore, upgrading the electric power grid is essential, which involves enhancing the power system reliability and efficiency. Upgrading the electric power network includes upgrading the power generation, transmission, distribution and measuring instruments. One of the essential aspects of these upgrades is improving the communication abilities in terms of monitoring and metering equipment to achieve the reliable information communication technology of the electrical grid [1]. Therefore, the Ethernet is applicable for real-time environments with the ability to create a full duplex-exchangeable connection and reordering of the network congestion with IEEE standard 802.1Q, based on it is priorities in the network. The backbone feature of IEEE standard 802.1Q is to support the Virtual Local Area Network (VLAN) isolation of traffic, which is significantly important to managing the information throughout the network. Consequently, a significant number of industries have started utilizing Ethernet in their networks. In turn, the forward packets method is utilized in the network to establish a transition communication between networks and introduce the concepts of next-generation technologies, for instance, colorless, directionless and contention fewer networks [2]. The concept of the next generation network (smart gird) has the conventional power technology that integrated with non-conventional information and communication technology and makes it possible to offer energy andinformation services concurrently. The intelligent power grid, that has several sensors connected through an intelligent communication network and data acquisition system, is known as a smart grid. This system uses real-time analysis by utilizing the computing system that will enable predictive, rather than reactive, responses to sudden disruptions; therefore, integrated two-way communications and a networking platform are essential to the intelligent network [3; 4; 5]. The universal communication standards that are implemented in smart grid devices are known as the International Electrotechnical Commission (IEC), such as the IEC 61850 standard. IEC 61850 is a creative approach that requires new plans for the most proficient methods to computerize the substations. The object-oriented approach requires the high capacity of data for transmission with critical cost investment funds because of unwavering quality (repeatability) and adaptability of uses. Furthermore, the IEC 61850 family is a standard used in intelligent networks that represents the key component for the Substation Automation System (SAS), as well as protecting the transmissions within the network. The main function of the IEC 61850 is establishing a standard communication that matches the existing requirements of the main upstream power grid [6; 7]. However, because of the availability of the new high bandwidth medium in advanced communication technologies, IEC 61850 has been developed to be an inter-substations standard. IEC 61850 characterizes the data models and the conceptual administrations (abstract services) to get to the information. The abstract services are characterized in IEC 61850 in a unique way that can be mapped into various conventions. Many existing characterizations in the IEC 61850 standard are to MMS (Manufacturing Message Specification) and GOOSE (Generic Object Oriented Substation Event) which are used for time-critical events, for instance, the insurance of the electrical hardware equipment shown in Figure 1[8]. In addition, due to the availability of the new high bandwidth communication medium in advanced technologies, IEC 61850 needs an Ethernet physical system that ordinarily utilizes high-speed switches to support the system connectivity with Ethernet as the physical layer.