MCR (magnetically controlled reactor) soft start and SVC (static VAR compensator) dynamic reactive compensation device as well as soft start and dynamic reactive compensation method
A compensating device and soft start technology, which is applied in the direction of reactive power adjustment/elimination/compensation, motor starter, motor generator/starter, etc., which can solve the problems of high construction cost, large maintenance amount, increased floor space, etc. problems, to achieve low production and operating costs, easy operation and maintenance, and reduce input costs
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Embodiment 1
[0031] As shown in the figure, it is a basic embodiment of an MCR soft start and SVC dynamic reactive power compensation device. MCR soft start and SVC dynamic reactive power compensation device, which consists of an MCR branch 1 and an FC branch 2 and control system 3; MCR branch 1 includes MCR controllable reactor 1.1, magnetic control unit 1.2, and start switching The circuit 1.3 and the operation switching circuit 1.4; the MCR controllable reactor 1.1 is connected in series with the start switching circuit 1.3 and the motor M, and connected in parallel to the grid system bus 6; the operation switching circuit 1.4 is connected in parallel to the grid system bus 6 and Start switching circuit 1.3; magnetron unit 1.2 thyristor connected to MCR controllable reactor 1.1 self-dual winding tap; the control system 3 and the magnetron unit 1.2 optical fiber signal connection control, the control system 3 is also connected with the start switching circuit 1.3. Operation switching circ...
Embodiment 2
[0033] The difference from Example 1 is: image 3 Attached figure 1 , There are 3 motors M. The start switching circuit 1.3 is composed of a switch group, which respectively start three motors M1, M2 and M3. Among them, the switch K2.1 corresponds to the motor M1, the switch K2.2 corresponds to the motor M2, and the switch K2.2 corresponds to the motor M3. Is switch K2.3; the switches of the operation switching circuit 1.4 of the motor M1, the motor M2, and the motor M3 are switch K3.1, switch K3.2, and switch K3.3 respectively; in this embodiment, switches K2 and K3 accept Control system 3 digital control switch and closed high voltage switch.
Embodiment 3
[0035] In the following, the method for soft start and dynamic reactive power compensation using the MCR soft start and SVC dynamic reactive power compensation device of the present invention will be further described in conjunction with the accompanying drawings and embodiments.
[0036] Using the MCR soft start and SVC dynamic reactive power compensation device of the present invention to perform the soft start and dynamic reactive power compensation method, the steps are:
[0037] A. In the starting state of the motor M: the control system 3 controls the closing of the switch 2 corresponding to the start switching circuit 1.3, and the MCR controllable reactor 1.1 in the MCR branch 1 becomes the soft start device of the motor M, realizing the power grid system bus 6 Soft start of one or several motors M;
[0038] B. When the starting state of the motor M ends, when the motor M enters operation: the control system 3 controls the operation switching circuit 1.4 to close the correspon...
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