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　　SYN5202a-Z,V221  Other names:

　　Synchronous device SYN5202a-Z,V221

　　SYN5202a-Z,V221  synchronous module

　　Synchronous module SYN5202a-Z,V221

　　SYN5202a-Z,V221 synchronous device is a product of ABB company, mainly used for grid connection operation in power systems.

　　Function introduction of SYN5202a-Z,V221 synchronous device:

　　Product Overview:

　　The importance of synchronous operation: During the operation of the power system, it is often necessary to parallel operate two different systems, and this parallel operation is called synchronous operation. Inappropriate parallelism can cause impacts on various components of the system, potentially causing system oscillations, relay protection actions such as current, voltage, and impedance, and posing a threat to the safe operation of the power grid and units. The SYN5202a-Z,V221 synchronous device is an advanced synchronous grid connection device developed by ABB, aimed at ensuring safe and accurate parallel operation of the generator or power system during the grid connection process. This device is suitable for power plants or industrial production equipment with built-in power generation facilities, especially suitable for situations where the generator needs to be connected to an isolated or public power grid.

　　Main functions:

　　Synchronous operation: The SYN5202a-Z,V221 synchronous device can adjust the speed and voltage of the standby generator to approach the system voltage and frequency, ensuring that the generator outlet circuit breaker is closed at zero phase angle difference, achieving fast synchronous grid connection of the generator.

　　Monitoring and protection: The SYN5202a-Z,V221 synchronous device ensures the safety and accuracy of grid connection operation by real-time monitoring of parameters such as voltage, frequency, and phase angle difference on both sides. When the synchronization conditions are not met, the device will prevent the power circuit breaker from closing, avoiding impact on the power grid and the unit.

　　Technical features:

　　Accuracy: The SYN5202a-Z,V221 synchronous device adopts advanced algorithms and sensor technology, which can provide accurate and reliable measurement results.

　　Reliability: The SYN5202a-Z,V221 synchronous device adopts a reliable design and manufacturing process, which can operate stably under various environmental conditions and has a long service life.

　　Flexibility: The SYN5202a-Z,V221 synchronous device can be programmed and configured to adapt to different application needs and scenarios. Users can customize and adjust according to their actual needs.

　　Quasi synchronous method: This device adopts a quasi synchronous method, which means that before being integrated into the power grid, the generator speed and excitation device are adjusted to make the generator speed and voltage close to the system value, and the generator outlet circuit breaker is selected to close at the time of zero phase angle difference to ensure that the generator is quickly pulled into synchronous operation with the minimum impulse current.

　　Ideal quasi synchronous conditions:

　　The voltage amplitude on both sides of the circuit breaker is equal, i.e. Ug=Us.

　　The voltage frequency on both sides of the circuit breaker is equal, that is, ω g=ω s or fg=fs.

　　The phase angle difference at the moment when the circuit breaker closes is zero, that is, phi=0, ensuring that the impact current of the system on the generator at the moment of grid connection is zero.

　　Application scenarios:

　　The SYN5202a-Z,V221 synchronous device is widely used in power stations, industrial production equipment, distribution systems, and other situations that require generators to be connected to the grid. Whether in manual or fully automatic grid connection, the device can effectively perform its various functions.

　　Notes:

　　When using the SYN5202a-Z,V221 synchronous device, it is necessary to ensure that the operator has the corresponding professional knowledge and skills to ensure the safety and accuracy of grid connection operation.

　　Before conducting grid connection operations, it is necessary to carefully check the various parameters and settings of the device to ensure that they match the actual situation.

　　During the grid connection process, it is necessary to closely monitor the operating status and monitoring data of the device, and promptly detect and handle abnormal situations.

　　In summary, the SSYN5202a-Z,V221 synchronous device is a powerful and technically reliable power system equipment that can effectively achieve the parallel operation of the generator and the power grid, ensuring the stable operation of the power system and the safe use of the generator.

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