Method for connecting power distribution terminal into scheduling data network through NAT (Network Address Translation) manner

Abstract

The invention provides a method for connecting a power distribution terminal into a scheduling data network through a NAT (Network Address Translation) manner and belongs to the field of power automation. The method is characterized in that NAT equipment is arranged between a side network switch of a transformer substation and side optical line terminal equipment, a power distribution automation terminal of the substation and a communication system forms a private network, a one-to-many secondary network model is formed on the basis of a conventional public network, multi-channel protocols are subjected to analysis of message information of application layers and conversion of private-public network addresses, IP addresses or ports needing to be subjected to address conversion in each substation are correspondingly converted and treated, thus the correctness of communication of the application layers is ensured, the problem of shortage of IP addresses occurring when a distribution network automation terminal is connected into a distribution network main station system through the scheduling data network is solved through the NAT manner, the available space of IP addresses of the public network is saved and extended, and the construction requirements of the automation systems of power distribution networks are satisfied. The method can be widely applied to the design and construction of a power scheduling data network and reorganization and expansion of conventional power scheduling data networks.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to an access method for a distribution automation terminal of a power dispatching data network. Background technique [0002] Power Distribution Network (Power Distribution Network) is a power network that receives electric energy from the transmission network or regional power plants, and distributes it locally through power distribution facilities or to various users step by step according to voltage. As the end of power supply, it directly faces the society and the general public. One of the important energy carriers for customers. [0003] The distribution network automation system refers to the use of modern electronic technology, communication technology, computer and network technology to integrate real-time information, offline information, user information, grid structure parameters, and geographic information of the distribution network to form a...

AI Technical Summary

Problems solved by technology

[0013] At the present stage, the distribution network automation master station system of the applicant's unit is only connected to various medium-voltage switch stations (referred to as K-type stations) and box-type substations (referred to as W-type stations), using the current network 67% of the configured IP address pool space has been used. In the near future, with the deepening of distribution network automation, the access of a large number of distribution terminals will face a serious shortage of IP addresses. Therefore, IP Insufficient address space is an urgent problem to be solved

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