A start-up control method of pumped storage unit SFC
A pumped-storage unit and monitoring system technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve the problems of complex control process of large-capacity pumped-storage units and difficult to deal with quickly, etc. Achieve the effect of good protection, strong reliability and high circuit safety
Inactive Publication Date: 2016-09-14
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0003] The present invention aims to solve the problem that the control process of the existing SFC startup large-capacity pumped storage unit is relatively complicated, and it is difficult to promptly and quickly deal with sudden accidents, and provides a startup control method for the pumped storage unit SFC. The circuit structure of the starting control method is simple, and the whole process of SFC starting the pumped storage unit is also relatively simple, so the control process is also relatively simple, and it is easy to deal with it in time and quickly when an emergency occurs
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Embodiment 1
[0031] Embodiment 1: A start-up control method of a pumped storage unit SFC in this embodiment, such as figure 1 As shown, it includes: pumped storage unit (100), LCU5 (200), SFC (300), excitation system (400) and monitoring system (500); SFC is electrically connected to LCU5, and pumped storage unit is electrically connected to LCU5, The SFC is electrically connected to the pumped storage unit, the SFC is electrically connected to the excitation system, the SFC is electrically connected to the monitoring system, the excitation system is electrically connected to the monitoring system, the LCU5 is electrically connected to the monitoring system, the pumped storage unit is electrically connected to the monitoring system, and the pumped storage The energy unit is electrically connected to the excitation system. see Figure 4As shown, it also includes an input switch (11), an output switch (17) and a drive bus (18), the SFC and the monitoring system are respectively electrically...
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The invention discloses a start-up control method of a pumped-storage unit SFC. The start-up control method has a simple circuit structure so that the control flow is also relatively simple, and it is easy to deal with it in time when an accident occurs. Including: pumped storage unit, LCU5, SFC, excitation system and monitoring system; pumped storage unit, LCU5, excitation system and monitoring system are respectively electrically connected to SFC, and pumped storage unit, LCU5, excitation system are respectively electrically connected to the monitoring system , the pumped storage unit is electrically connected to the LCU5. The monitoring system sends an instruction to the LCU5 to start the SFC, and the LCU5 and the SFC jointly complete the preparations for the pumped storage unit to be started by the SFC. The monitoring system sends an order to LCU5 to pull the dragged switch knife of the pumped storage unit, the monitoring system sends an instruction to the excitation system to work in the reactive power adjustment mode, and sends an order to LCU5 to pull the switch knife to start the busbar, thus completing the SFC startup pumping The whole process of energy storage unit. The invention is mainly used in the start-up technology of the pumped storage unit.
Description
technical field [0001] The invention relates to the technical field of start-up of a pumped-storage unit, in particular to a start-up control method of a pumped-storage unit SFC. Background technique [0002] Existing pumped storage power stations generally use back-to-back, full pressure or reduced pressure to drive the start of the pumped storage unit. The full-voltage and reduced-voltage starting methods are that the unit is connected to the grid directly (full voltage) or through an impedance or transformer (half voltage). The full-voltage and reduced-voltage starting methods are suitable for small and medium-capacity units. The impact on the power grid and the unit itself is relatively large. The circuit structure of the back-to-back starting mode is relatively complicated, which makes the sequential control process more complicated, and it is difficult to deal with it in time and quickly in the event of an emergency. If the capacity of the unit is large, it is necess...
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IPC IPC(8): G05B19/04
Inventor 杨文道衣传宝王青亚
Owner STATE GRID CORP OF CHINA