Double-machine parallel coordination control device of short-circuit impact generator excitation system

Abstract

The utility model discloses a double-machine parallel coordination control device for an excitation system of a short-circuit impact generator, which belongs to the field of high-capacity short-circuit impact generators and comprises a real-time monitoring module, a double-machine communication module, a coordination control module and a coordination execution module. The real-time monitoring module monitors the signal and sends a result to the coordination control module and the dual-machine communication module for data exchange, and the coordination execution module receives an instruction signal of the coordination control module and performs magnetic increasing, demagnetizing and shutdown control on a local excitation system. According to the utility model, the excitation system state is monitored and controlled in real time when the excitation system of the short-circuit impact generator runs in parallel, so that the voltage buildup time of the short-circuit impact generator running in parallel is effectively shortened, and the test efficiency of a unit is improved; and meanwhile, the problem of faults caused by reverse voltage feeding after fault and voltage loss of any unit after double units are connected in parallel is solved, and safe and reliable operation of the units is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of large capacity short circuit impact generator, concretely is a short circuit impact generator excitation system double machine parallel coordination control device. BACKGROUND

[0002] Short circuit impact generator is the device for testing and detecting high voltage circuit breaker, high voltage switch, transformer and other equipment, short circuit impact generator works in the short circuit condition of the unit, and the excitation system adopts the field excitation mode, and can quickly output the highest 10 times strong excitation current, along with the rapid development of high voltage equipment and high voltage power grid, the current demand of the tested equipment increases greatly, and the double machine parallel test can effectively increase the test current.

[0003] However, the existing short circuit impact generator excitation system only monitors the operation state of the system and makes corresponding control, and the following problems may occur in double machine parallel test: first, the output voltage and current difference of the double machine is too large, the system voltage and current fluctuate repeatedly, the voltage building time is too long, and the test efficiency is affected.Second, during the voltage increasing or test process, when one unit fails and the system suddenly loses voltage, the other unit still increases voltage, which leads to voltage return and burns the unit, and affects the safety and stability of the system. SUMMARY

[0004] Therefore, the utility model provides a short circuit impact generator excitation system double machine parallel coordination control device, which can monitor the output voltage, current and operation state of the two sets of excitation systems in real time, adjust the parallel output value and control signal through coordinated control, quickly and accurately build voltage, and ensure that when one unit fails and loses voltage during unit voltage increasing or double machine parallel test, the other unit reduces voltage and stops, so that the voltage return phenomenon is avoided and the fault is caused.

[0005] The utility model provides the following technical scheme:

[0006] A short circuit impact generator excitation system double machine parallel coordination control device is composed of a real-time monitoring module, a double machine communication module, a coordinated control module and a coordinated execution module, the output of the real-time monitoring module of the excitation system A / B is connected to the double machine communication module and the coordinated control module, the output of the double machine communication module is connected to the coordinated control module, and the output of the coordinated control module is connected to the coordinated execution module.

[0007] As a further scheme of the utility model, the real-time monitoring module is composed of an analog quantity acquisition module, a digital quantity acquisition module and a real-time state conversion transmission module, the voltage and current analog signals of the excitation system enter the analog quantity acquisition module, the relevant digital quantity of the excitation system enters the digital quantity acquisition module, the output of the analog quantity acquisition module and the digital quantity acquisition module is connected to the real-time state conversion transmission module, and the output of the real-time state conversion transmission module is connected to the double machine communication module.

[0008] As a further scheme of the utility model, the coordination control module is composed of a signal receiving module, a state comparison module and a coordination analysis module, the output of the real-time monitoring module is connected to the signal receiving module, the output of the dual-machine communication module is connected to the signal receiving module, the output of the signal receiving module is connected to the state comparison module, the output of the state comparison module is connected to the coordination analysis module, and the coordination analysis module outputs a control signal to the coordination execution module.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] 1. The utility model can monitor the output voltage and current of two sets of excitation systems in real time, and adjusts the excitation system according to the dual-machine parallel test condition to increase or decrease the magnetic field, so that the unit quickly reaches the voltage and current required by the dual-machine parallel test, and the efficiency of the dual-machine parallel test is improved.

[0011] 2. The utility model can monitor the running state of two sets of excitation systems in real time, and performs logical control on the system through dual-machine state comparison, avoids the influence of single-machine fault on the dual-machine system, and effectively improves the safety of the system. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model.

[0013] Figure 2 It is a structural schematic view of the real-time monitoring module.

[0014] Figure 3 It is a structural schematic view of the coordination control module.

[0015] Marking in the drawing: 1-real-time monitoring module;2-dual-machine communication module;3-coordination control module;4-coordination execution module;5-analog quantity acquisition module;6-digital quantity acquisition module;7-real-time state conversion transmission module;8-signal receiving module;9-state comparison module;10-coordination analysis module. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the following will be further explained and described in combination with the drawings and specific embodiments, but each embodiment does not constitute the limitation to the utility model. The specific embodiments described in the drawings are exemplary, and are only used to explain the utility model, and cannot be understood as the limitation to the utility model.

[0017] As Figure 1As shown in the figure, a short-circuit impact generator excitation system double-machine parallel coordinated control device is composed of a real-time monitoring module 1, a double-machine communication module 2, a coordinated control module 3 and a coordinated execution module 4. The real-time monitoring module 1 of the excitation system A / B monitors the voltage, current and operating state of the excitation system A / B, and sends the monitoring results to the double-machine communication module 2 and the coordinated control module 3. The double-machine communication module 2 exchanges the data of the two sets of excitation systems and sends them to the coordinated control module 3 of the excitation system A / B. The coordinated control module 3 sends instruction signals to the coordinated execution module 4 according to the actual operating state of the two machines and the system operating condition. The coordinated execution module 4 controls the magnetization increase, magnetization decrease and shutdown of the local excitation system according to the received instruction signals.

[0018] As shown in the figure, Figure 2 The real-time monitoring module 1 is composed of an analog quantity acquisition module 5, a digital quantity acquisition module 6 and a real-time state conversion transmission module 7. The analog signals such as voltage and current of the excitation system enter the analog quantity acquisition module 5, and the relevant digital quantities of the excitation system enter the digital quantity acquisition module 6. The analog quantity acquisition module 5 and the digital quantity acquisition module 6 send the collected signals to the real-time state conversion transmission module 7. The real-time state conversion transmission module 7 transmits the signals to the double-machine communication module 2 for data exchange through communication.

[0019] As shown in the figure, Figure 3 The coordinated control module 3 is composed of a signal receiving module 8, a state comparison module 9 and a coordinated analysis module 10. The real-time monitoring module 1 sends the state signals of the excitation system to the signal receiving module 8, and the double-machine communication module 2 sends the state signals of the other excitation system to the signal receiving module 8. The signal receiving device connects all the signals to the state comparison module 9. The state comparison module 9 compares the states of the two sets of excitation systems and sends the difference signals to the coordinated analysis module 10. The coordinated analysis module 10 analyzes and logically judges the difference signals and outputs control signals to the coordinated execution module 4 for system adjustment.

[0020] The utility model is suitable for large capacity short-circuit impact generator excitation system, can effectively solve the problem existing in traditional design scheme, and has the characteristics such as high module integration, good stability, remarkable effect.

[0021] Finally, the protection scope of the utility model is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the scope and spirit of the present application. If these modifications and changes belong to the scope of the claims of the present application and its equivalent technologies, the present application also intends to include these modifications and changes.

Claims

1. A dual-machine parallel coordinated control device for a short-circuit impulse generator excitation system, characterized in that: It consists of a real-time monitoring module (1), a dual-machine communication module (2), a coordination control module (3), and a coordination execution module (4). The output of the real-time monitoring module (1) of the excitation system A / B is connected to the dual-machine communication module (2) and the coordination control module (3). The output of the dual-machine communication module (2) is connected to the coordination control module (3), and the output of the coordination control module (3) is connected to the coordination execution module (4).

2. The dual-machine parallel coordinated control device for a short-circuit impulse generator excitation system according to claim 1, characterized in that: The real-time monitoring module (1) consists of an analog quantity acquisition module (5), a digital quantity acquisition module (6), and a real-time state conversion transmission module (7). The voltage and current analog signals of the excitation system enter the analog quantity acquisition module (5), and the digital quantities related to the excitation system enter the digital quantity acquisition module (6). The outputs of the analog quantity acquisition module (5) and the digital quantity acquisition module (6) are connected to the real-time state conversion transmission module (7), and the output of the real-time state conversion transmission module (7) is connected to the dual-machine communication module (2).

3. The dual-machine parallel coordinated control device for a short-circuit impulse generator excitation system according to claim 1, characterized in that: The coordination control module (3) consists of a signal receiving module (8), a status comparison module (9), and a coordination analysis module (10). The output of the real-time monitoring module (1) is connected to the signal receiving module (8), the output of the dual-machine communication module (2) is connected to the signal receiving module (8), the output of the signal receiving module (8) is connected to the status comparison module (9), the output of the status comparison module (9) is connected to the coordination analysis module (10), and the coordination analysis module (10) outputs control signals to the coordination execution module (4).

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