3BHE009681R0101 GVC750BE101 3BHB013085R0001 5SHY3545L0009

3BHE009681R0101 GVC750BE101 3BHB013085R0001 5SHY3545L0009

3BHE009681R0101 GVC750BE101 3BHB013085R0001 5SHY3545L0009 From the point of view of the functions that can be realized by the RTU of the substation, the automation of the substation includes 3 aspects: telecommunication, telemetry and remote control. In addition, some systems can also realize the total addition of electric energy according to the results of telemetry. Accordingly, substation automation system can be divided into two categories: one category only realizes the functions of telecommunication and telemetry, i.e. traditional SCADA system; while the latest SCADA system belongs to the other category, which is supposed to be able to realize all the functions of the “three remoteness”. These two types of systems correspond to different stages and levels of power system automation.

The 3BHE009681R0101 GVC750BE101 3BHB013085R0001 5SHY3545L0009 device uses a transmitter to convert AC to DC before collecting analog quantities, and then uses an RTUA/D conversion element to convert the DC flow into digital quantities. The device is based on analog circuitry supplemented by a small amount of digital circuitry. It is characterized by the need for a converter, no advanced digital processing unit (CPU, etc.), difficulty in reflecting the instantaneous changes in analog quantities, inability to carry out harmonic analysis, and complexity and difficulty in the realization of the total addition of electrical energy.

3BHE009681R0101 GVC750BE101 3BHB013085R0001 5SHY3545L0009 device directly uses A/D conversion components to collect and calculate the AC power quantity, without the need for conversion equipment such as transmitters, but it needs a fast digital processing unit to cooperate in order to analyze and synthesize the collected data. It can not only reflect the instantaneous changes in the amount of electricity, but also can carry out harmonic analysis, calculate the frequency, and simply realize the total addition of electric energy function. They mostly use microcomputers (such as 8 X86, etc.) with a number of microcontrollers (such as 8051, 8098, etc.), and with a large number of A/D conversion circuits to achieve the collection of switching and analog quantities.