A Fault Recovery Method for Distribution Networks With Distributed Power Sources Based on 5G Smart Terminal

A Fault Recovery Method For Distribution Networks With Distributed Power Sources Based On 5G Smart Terminal

With the improvement of economic level, the demand for power supply reliability from users is gradually increasing. As the connection hub between the transmission network and users, the fault situation of the distribution network accounts for 80% of the power system faults. Building a fast and reliable distribution network fault recovery strategy can help improve the power quality and power supply service level of the distribution network (Ahrari et al., 2024; Zhang et al., 2024). 5G communication, as a research focus in the communication industry in recent years, has developed rapidly in technology, and its pilot construction in the distribution network has also increased (Parsediya & Singhal, 2023; Srividhya & Jothilakshmi, 2024). It is of great significance to fully utilize 5G communication networks and study fault recovery strategies suitable for 5G communication channels in distribution networks.

The fault recovery strategies of existing distribution networks can be roughly divided into three categories: On-site control, centralized control, and distributed control. The first type achieves functionality through the combination of local voltage and time information, without the need for information exchange, but, when applied to active distribution networks, the operating logic will be affected (Selcen Ayaz et al., 2020). The second type mainly relies on the configuration of the main station and the collection of global information to achieve functions, which is the most widely used and can achieve optimization under certain conditions. However, there are problems such as severe dependence on the main station and communication, high computational pressure, and long processing time (Zarco-Soto et al., 2021). The third type relies on terminals with certain autonomous capabilities installed at each node of the system and information exchange between them to achieve functionality, reducing the risk of single dependency, requiring less configuration information, low maintenance costs, greatly reducing the burden of computing and communication, and making the operation more flexible, thereby achieving faster response (Musiqi et al., 2023). The distributed multiagent fault recovery strategies are all based on traditional fiber optic channels, and, due to cost constraints, there is not a large amount of fiber optic laid in the distribution network (Dasari & Kaluri, 2024). Therefore, the recovery strategies based on multiagent systems are difficult to promote on a large scale. The 5G communication method has the characteristics of high reliability and low latency, providing an alternative solution for fiber optic communication in distribution networks (Babu et al., 2023; Begum et al., 2023).

The authors propose a fault recovery method for distributed power distribution networks based on 5G smart terminals to address the issues of high latency and low accuracy in current intelligent distribution network control systems. The innovative points are summarized as follows:

• 1.

  To reduce the communication delay of the distribution network, the authors designed 5G smart terminals based on 5G communication technology, and constructed a distributed control model for the distribution network based on this to comprehensively improve the communication speed of the distribution network.

• 2.

  Due to the problem of being limited to local optima in the sparrow search algorithm (SSA), the proposed method utilizes elite reverse learning strategy and dynamic sine perturbation strategy to improve it, resulting in the improved squirrel search algorithm (ISSA). The authors then used it to solve the objective function to obtain an ideal fault recovery scheme for distribution networks containing distributed generation (DG).