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Pump storage group variable frequency starting load simulation system

A pumped storage unit, frequency conversion start technology, applied to the starter of a single multi-phase induction motor, motor generator/starter, etc., can solve the problem of large-scale pumped storage unit frequency conversion start load simulation system report, etc., to achieve the interface Friendly, short development time, portability-friendly effects

Inactive Publication Date: 2015-04-08
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to information, so far there is no relevant report on the variable frequency start-up load simulation system for large pumped storage units at home and abroad.

Method used

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  • Pump storage group variable frequency starting load simulation system
  • Pump storage group variable frequency starting load simulation system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0009] like figure 1 A variable frequency starting load simulation system for a pumped storage unit shown is composed of a T5610 upper computer, a Y355L2_12 / V3 asynchronous motor, a SINAMICS S120 four-quadrant frequency converter, a SIMOTION D435 controller and an RSH58 incremental photoelectric encoder. The core equipment of the invention, the industrial Ethernet port of the T5610 upper computer 1 is connected to the PROFINET (automation bus standard of industrial Ethernet technology) interface of the SIMOTION D435 controller 2 through a network cable; the output interface of the SIMOTION D435 controller 2 is connected to the The DRIVE-CLIQ bus port (bottom communication bus) of SINAMICS S120 four-quadrant inverter 3; the output terminals of SINAMICS S120 four-quadrant inverter 3 are connected to the three-phase input terminals of Y355L2_12 / V3 asynchronous motor 5 input power through three identical cables. Connection; RSH58 incremental photoelectric encoder 7 hollow shaft sl...

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Abstract

The invention discloses a pump storage group variable frequency starting load simulation system with a controller, a four-quadrant frequency converter and an asynchronous motor serving as core devices and outputs a function relationship between the pump storage group generator motor variable frequency starting load resisting moment and the rotation speed. The four-quadrant frequency converter controls through torque when simulates the pump storage group generator motor variable frequency starting load and achieves a zero-speed-torque output function of the load simulation system at a starting stage of the variable frequency starting process of the group. During the group starting, speed rising and grid connection process, an SFC (Static Frequency Converter) adjusts the speed, the four-quadrant frequency converter outputs the torque according to the functional relationship of the load resisting moment and the rotation speed, and simulation of the pump storage group generator motor variable frequency starting load is achieved.

Description

Technical field: [0001] The invention relates to a load simulation system for variable frequency start-up of pumped water storage units. Background technique: [0002] With the vigorous development of the hydropower industry, pumped storage units continue to emerge. Compared with conventional hydroelectric generators, the operating conditions of pumped storage units are much more complicated. This is due to the fact that the unit not only operates in power generation conditions, but also operates in pumping conditions. Among them, in the case of switching from the power generation condition to the pumping condition, a transitional stage, that is, the start-up process, is required. Frequency conversion start is the most commonly used method for large pumped storage units, and it is also one of the key technologies to ensure that the unit can start reliably. The process of variable frequency starting with SFC (Static Frequency Converter) device is very complicated. In the d...

Claims

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Application Information

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IPC IPC(8): H02P1/30
CPCH02P1/30
Inventor 胡丽杰孙玉田梁彬王洪泉韩波毕纯辉高尚
Owner HARBIN ELECTRIC MASCH CO LTD
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