Dynamic reconfiguration system and method of secondary equipment of intelligent substation

Abstract

The invention provides dynamic reconfiguration system and method of secondary equipment of intelligent substation. The system comprises a management host machine and universal equipment for receiving the control instruction of the management host machine. The method comprises the following steps of: (1) enabling the management host machine to obtain an SCD (Security Coding Device) model of the intelligent substation and analyze the CID model of the universal equipment; (2) monitoring the operation and stop of the universal equipment in an online manner, and displaying the equipment connection state; (3) subscribing for equipment state variable, calling self-checking service at regular time and estimating the operation state of the equipment in an online manner; and (4) when the equipment has a fault, controlling the restart or stop of the failed equipment as well as the operation of standby equipment. The dynamic reconfiguration system and method of the secondary equipment of intelligent substation not only can be used for sensing the operation state of the secondary equipment, but also meets the self-treating and self-healing requirement of the secondary equipment; overhauling can be completed immediately when the secondary equipment fails so as to recover the operation; and simultaneously, the universal equipment can be used for reducing the complexity of the system and improving the reliability of the system.

Description

technical field [0001] The invention belongs to the field of electric power automation, and in particular relates to a dynamic reconfiguration system and method for secondary equipment of an intelligent substation. Background technique [0002] In 2007, a local power supply bureau classified and counted the damaged secondary equipment of the substation. By consulting the operation records, ambient temperature during operation, weather conditions, and the exact time of equipment damage, the specific causes of the damage were found in groups, and the substations were analyzed. The classification of secondary equipment damage causes is shown in Table 1 below. [0003] serial number date project Frequency cumulative frequency Grand total% 1 2006.2～2006.11 struck by lightning 21 21 42.86％ 2 2006.2～2006.11 high ambient temperature 13 34 69.39％ 3 2006.2～2006.11 ...

AI Technical Summary

Problems solved by technology

[0009] At present, some smart substation pilots have applied the condition-based maintenance of secondary equipment based on online monitoring of state variables, but the monitoring is only to perceive the operating status of secondary equipment, which cannot meet the requirements of autonomy and self-healing, especially for unattended stations. When the secondary equipment fails, it is impossible to arrive at the site to complete the maintenance and resume operation at the first time. At the same time, the general-purpose equipment reduces the complexity of the system and improves the reliability of the system.

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