Standby Power Automatic Throw The Device Csb21a In Engineering Applications And Improved Methods

The device for automatic converting of spare power supply, which will greatly improve the reliability of electric power supply, is used widely in electric power system. The device adopts the electromagnetic pattern for long time. Although simple implementation, it is unreliable due to the essential shortcoming of the electromagnetic relay. Especially with the improving of the synthesis automatization, the introducing of digital device for automatic converting of spare power supply is the only way. This paper brings forward improving measures after analyzing the digital device for automatic converting of spare power supply from the theory, structure and applications, and compares the effect. It is proved that the device is more suitable for the request of the spot after improving and the correct rate of the actions of device is increased greatly.As the product of beijing sifang automation co.,ltd, csb-21a digital device for automatic converting of spare power supply is the accessorial equipment of csc-2000 synthesis automatization system.Widely. Based on the third generation computer protection general hardware and the design idea of programmable logic, this kind of equipment can implement flexible setting for all kinds of running manners. It is suitable for the control of automatic converting of spare power supply for various voltage levels in 380v-110kv.Csb-21a equipment provides function for automatic setting of protection manners, besides programmable logic setting. According to the design requirement of customers, the equipment, with the exclusion of general type, can meet the needs of customers by the means of modifying the database of manner. Csb-21a embodies its advantage by passing rich information through network, such as the records of exact time order of each exit and each switch parameter. The equipment can change the manner of setting control word for various spare power supply modes to fit various situations by software programmable technology. At the same time, the flexibility and the practicability of the equipment is greatly improved through deploying hardware according to the utmost patterns of spare power supply and defining analog value, sample value and output.Digital device for automatic converting of spare power supply csb-21a wins the favor of the users because of its good performance, high reliability, complete function, strong flexibility and convenient debugging and maintenance. But it has its disadvantages in many aspects. For example, the 8 groups of default values can not meet the needs of the practical connection of electronic network, and users must program manually based on the main connection manners and running characters in the application. Further more, it is limited to be only applied in the electronic networks that voltage levels are below 110kv.