Advantages of parallel and parallel cabinets:
Automatic generator set parallel (parallel), equipped with synchronous control, load distribution module and automatic opening and closing switch, the whole set of combining cabinet device has advanced performance, easy to use and maintenance. The combination cabinet has the following advantages:
1. Improve the reliability and continuity of the power supply system. Because multiple units are connected into a power grid, the voltage and frequency of the power supply are stable, and can withstand the impact of large load changes.
2. maintenance, maintenance more convenient multiple units in parallel use, can be centralized scheduling, distribution of active load and reactive load, can make maintenance, maintenance convenient and timely.
3. more economical can be according to the size of the load on the network, put into the appropriate number of low-power units, in order to reduce the high-power unit small load operation caused by fuel, oil waste.
4. the future expansion is more flexible only need to install the power generation and parallel equipment required now, when the company needs to expand the power grid capacity in the future, and then add diesel generator sets, and can easily achieve the expansion of the unit parallel, so that the initial investment is more economical.
Requirements and conditions for parallel operation:
Electronic speed regulating generator set; Same phase sequence; The voltage is equal; The frequency is the same; Same phase. Automatic parallel screen: the most practical automation system. With all the functions of a manual parallel screen. When the switch selector is placed in the “automatic” position, the automatic synchronizer can automatically adjust the frequency and phase of the unit to be combined, and output the closing signal during synchronization to achieve automatic parallel. Built-in programmable controller can automatically control load balancing, load demand and scheduling of unit operation to ensure reliable operation of power grid. When the mains fails, it can automatically start the generator set, automatically parallel, and monitor various faults of the parallel system.
The main characteristics of multiple generator sets
1. manual/automatic parallel mode selection.
2. synchronous and accurate, no impact, parallel time is short (no more than 3 seconds).
3. according to the load needs to be combined automatically or uncolumn, so that the operation is more economical.
4. When multiple units work simultaneously, the load distribution difference is less than 5%, which ensures the reliability of the unit operation.
5. with the self-starting control module of the unit, it can realize automatic start and input when the mains failure, and automatic parallel; Detach and stop automatically after the mains is restored.
6. with reverse power, overcurrent, short circuit, mechanical failure, mains float charger fault indication and protection functions.
7. can be used in conjunction with the ATS cabinet, after the mains comes, the unit automatically delays cutting, the load is transferred to the mains; When the mains fails, the unit starts itself and the load is transferred to the generator. In these conversions, mains power always takes precedence.
Post time: May-27-2024