CN104485042A - Digital-analog hybrid simulation system and method of controllable series compensator - Google Patents
Digital-analog hybrid simulation system and method of controllable series compensator Download PDFInfo
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- CN104485042A CN104485042A CN201410712233.4A CN201410712233A CN104485042A CN 104485042 A CN104485042 A CN 104485042A CN 201410712233 A CN201410712233 A CN 201410712233A CN 104485042 A CN104485042 A CN 104485042A
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Abstract
The invention relates to a digital-analog hybrid simulation system and a digital-analog hybrid simulation method of a controllable series compensator. The system is used for training technical skills and comprises a low-voltage physical model, a low-voltage physical model control system and a digital simulation machine, wherein the low-voltage physical model control system controls the low-voltage physical model during independent running, and the digital simulation machine controls when digital and analog mixed simulation is performed; the low-voltage physical model control system can control a TCSC (Thyristor Controlled Series Compensation) digital simulation module main circuit in the digital simulation machine. The system and the method can perform local/remote operation as well as real-time online simulation study on the low-voltage physical model, are flexible and variable in teaching model, and can achieve a good demonstration teaching effect.
Description
Technical field
The present invention relates to analogue system and the emulation mode thereof of field of power electronics, specifically relate to a kind of numerical model analysis analogue system and emulation mode thereof of Thyristor Controlled Seriescompensation.
Background technology
Power Electronic Technique is the technology utilizing power electronic devices to convert electric energy and control, and Power Electronic Technique and device are widely used in the fields such as flexible AC transmission, D.C. high voltage transmission, AC and DC power transmission.TCSC is the important branch of flexible AC transmitting system, and it is that the level and smooth control of utilization to controlled series compensation impedance is to improve transport capacity and the stability of electric system.The TCSC applied in engineering is controllable serial capacitor.It is by capacitor series in transmission line of electricity, simultaneously a thyristor valve control reactor in parallel at capacitor two ends.By changing the trigger angle of thyristor valve, can on a large scale in regulate the resistance value of controlled series compensation fast, smoothly, shorten the electrical distance between transmission line of electricity, improve Transmission Lines capacity, flexible control system trend, strengthens system damping, suppresses SSR etc.Existing numerical model analysis emulation mainly adopts the digital model in outer connected control system control imitation machine, and be mainly used in scientific research institutions, use-pattern is dumb.
Summary of the invention
For the deficiencies in the prior art; the object of this invention is to provide a kind of numerical model analysis analogue system and emulation mode thereof of Thyristor Controlled Seriescompensation; the present invention not only can carry out this locality/remote operation to low pressure physical model but also can carry out real-time on-line simulation research; teaching pattern is versatile and flexible, can play good demonstration teaching effect.
The object of the invention is to adopt following technical proposals to realize:
The invention provides a kind of numerical model analysis analogue system of Thyristor Controlled Seriescompensation, its improvements are, described system is used for technical skill training, comprises low pressure physical model, low pressure physical model-controlled system and Digital Simulation machine; Low pressure physical Model Independent is controlled by low pressure physical model-controlled system when running, and is controlled by Digital Simulation machine when carrying out numerical model analysis emulation; Described low pressure physical model-controlled system can TCSC digital simulation model main circuit in control figure replicating machine.
Further, described low pressure physical model comprises TCSC low pressure physical model, ultra-high-tension power transmission line model, inductive load physical model, capacitive load physical model and communication system; Ultra-high-tension power transmission line model comprises structure identical circuit I and circuit II; Described circuit I and circuit II all accesses in 380V electric pressure system; Described TCSC low pressure physical model is between circuit I and circuit II; Described inductive load physical model and capacitive load physical model access in 380V electric pressure system.
Further, described TCSC low pressure physical model is Thyristor Controlled Seriescompensation, comprises thyristor valve, inductance and capacitor, and described thyristor valve and inductance are in parallel with capacitor after connecting; Described circuit I and circuit II includes two capacitors and inductance; One end ground connection of one of them capacitor, the other end is connected with one end of inductance; The other end of inductance is connected with one end of another capacitor; The other end ground connection of another capacitor.
Further, described low pressure physical model-controlled system comprises parametric controller, TCSC physical controller, voltage transformer (VT), current transformer, optic fibre switching plate and replicating machine; Described parametric controller is by optic fibre switching plate control TCSC low pressure physical model, inductive load physical model and capacitive load physical model respectively; Described TCSC physical controller is arranged between parametric controller and optic fibre switching plate; Described voltage transformer (VT) is connected in 380V electric pressure system; Described current transformer is connected with TCSC low pressure physical model; Described TCSC low pressure physical model, inductive load physical model are connected with replicating machine respectively by photoelectric conversion plate with capacitive load physical model;
Described low pressure physical model-controlled system is for realizing the data acquisition of low pressure physical model, Control protection and man-machine interaction; comprise: 1) possess gather Control protection and man-machine interface display needed for analog quantity and switching value function; 2) operation of TCSC low pressure physical model switching is completed; 3) the experimental teaching function of TCSC low pressure physical model is completed; 4) when there is low pressure physical model-controlled system abnormality, ensure that TCSC low pressure physical model misoperation does not occur.
Further, described parametric controller and TCSC controller are powered by independent current source; Described voltage transformer (VT) is used for acquisition system voltage; Described current transformer for gathering TCSC low pressure physical model output current amount, and sends magnitude of current data to parametric controller, so that parameter display and the defencive function realizing Thyristor Controlled Seriescompensation TCSC; Described optic fibre switching plate is for receiving distant place knob simulation work mode telecommunication number and according to simulation work mode signal gating optical fibre channel; Relay signal, according to instruction, is issued the contactor node of TCSC low pressure physical model by parametric controller, control TCSC low pressure physical model input or out of service.
Further, all optical fiber communication is adopted between described TCSC physical controller and optic fibre switching plate, between optic fibre switching plate and TCSC low pressure physical model; Optical fiber communication is adopted between the contactor of optic fibre switching plate and capacitive load physical model; Cable communication is adopted between the contactor of optic fibre switching plate and inductive load physical model.
Further, described Digital Simulation machine comprises industrial computer, digital simulation module and TCSC digital simulation model, and TCSC low pressure physical model, by optic fibre switching plate and emulation platform interface communication, realizes numerical model analysis copying.
The present invention also provides a kind of emulation mode of numerical model analysis analogue system of Thyristor Controlled Seriescompensation, and its improvements are, described emulation mode comprises following simulation work pattern:
1. low pressure physical model-controlled system controls low pressure physical model emulation mode of operation;
2. Digital Simulation machine controls low pressure physical model emulation mode of operation;
3. low pressure physical control system control figure realistic model main circuit simulation work pattern.
Further, described simulation work pattern 1. in, TCSC physical controller in low pressure physical model-controlled system controls the TCSC low pressure physical model of low pressure physical model, capacitive load physical model and inductive load physical model;
Described TCSC low pressure physical model, capacitive load physical model and inductive load physical model possess this locality or distant place switching function; After dropping into capacitive or inductive load physical model, change 380V electric pressure system equivalent impedance parameter, 380V busbar voltage rises or declines, after input TCSC low pressure physical model, improve the reactive power distribution of 380V electric pressure system, 380V busbar voltage declines or rises, and maintains within the scope of control objectives by 380V busbar voltage;
1. described simulation work pattern is analog simulation, exports idle with TCSC physical controller control TCSC low pressure physical model;
Described simulation work pattern 2. and 3. in numerical model analysis emulation, with Digital Simulation machine control TCSC low pressure physical model with the TCSC digital simulation model main circuit in TCSC physical controller control figure replicating machine.
With immediate prior art ratio, excellent effect of the present invention is:
The performance such as electrical specification, operation maintenance feature, Control protection function being applied to the TCSC of high voltage power transmisson system can vividly be demonstrated out by the low pressure physical model system in the present invention, can independently set operational factor and control strategy flexibly.When training and teaching, based on low pressure physical model system of the present invention, be convenient to trainee's connection between theory and practice, the principle of profound understanding TCSC and effect, contribute to practical operation and operation maintenance feature that trainee learns TCSC, trainee can be made just skillfully can to understand formally pre-job the working specification grasping TCSC.Low pressure physical model realizes the mutual communication between Digital Simulation machine and low pressure physical model-controlled system by optic fibre switching plate and optical fiber: the ruuning situation of low pressure physical model system can show in the man-machine interface of control system, control system can carry out On-line Control to low pressure physical model, and Digital Simulation machine and control system can carry out online real-time simulation.This system not only can have been carried out this locality/remote operation to low pressure physical model but also can carry out real-time on-line simulation research, and teaching pattern is versatile and flexible, can play good demonstration teaching effect.
The method that the present invention carries more contributes to teachings and researches and combines, and adopting first between digital-to-analogue can the teaching and scientific research platform of interactive controlling.
Accompanying drawing explanation
Fig. 1 is low pressure physical model major loop wiring diagram provided by the invention;
Fig. 2 is numerical model analysis analogue system pie graph provided by the invention;
Fig. 3 is low pressure physical model-controlled system frame diagram provided by the invention;
Fig. 4 is optical fiber change-over panel circuit diagram provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The invention provides a kind of numerical model analysis analogue system of Thyristor Controlled Seriescompensation, this system is used for technical skill training, and numerical model analysis analogue system pie graph as shown in Figure 2, comprises low pressure physical model, low pressure physical model-controlled system and Digital Simulation machine; Low pressure physical Model Independent is controlled by low pressure physical model-controlled system when running, and is controlled by Digital Simulation machine when carrying out numerical model analysis emulation; Described low pressure physical model-controlled system can TCSC digital simulation model main circuit in control figure replicating machine.
Described low pressure physical model comprises TCSC low pressure physical model, ultra-high-tension power transmission line model, inductive load physical model, capacitive load physical model and communication system; Ultra-high-tension power transmission line model comprises structure identical circuit I and circuit II; Described circuit I and circuit II all accesses in 380V electric pressure system; Described TCSC low pressure physical model is between circuit I and circuit II; Described inductive load physical model and capacitive load physical model access in 380V electric pressure system.
As shown in Figure 1, described TCSC low pressure physical model is Thyristor Controlled Seriescompensation to low pressure physical model major loop wiring diagram provided by the invention, comprises thyristor valve, inductance and capacitor, and described thyristor valve and inductance are in parallel with capacitor after connecting; Described circuit I and circuit II includes two capacitors and inductance; One end ground connection of one of them capacitor, the other end is connected with one end of inductance; The other end of inductance is connected with one end of another capacitor; The other end ground connection of another capacitor.
Described low pressure physical model-controlled system comprises parametric controller, TCSC physical controller, voltage transformer (VT), current transformer, optic fibre switching plate and replicating machine; Described parametric controller is by optic fibre switching plate control TCSC low pressure physical model, inductive load physical model and capacitive load physical model respectively; Described TCSC physical controller is arranged between parametric controller and optic fibre switching plate; Described voltage transformer (VT) is connected in 380V electric pressure system; Described current transformer is connected with TCSC low pressure physical model; Described TCSC low pressure physical model, inductive load physical model are connected with replicating machine respectively by photoelectric conversion plate with capacitive load physical model;
Described low pressure physical model-controlled system is for realizing the data acquisition of low pressure physical model, Control protection and man-machine interaction; comprise: 1) possess gather Control protection and man-machine interface display needed for analog quantity and switching value function; 2) operation of TCSC low pressure physical model switching is completed; 3) the experimental teaching function of TCSC low pressure physical model is completed; 4) when there is low pressure physical model-controlled system abnormality, ensure that TCSC low pressure physical model misoperation does not occur.Low pressure physical model-controlled system frame diagram as indicated at 3.
Described parametric controller and TCSC controller are powered by independent current source; Described voltage transformer (VT) is used for acquisition system voltage; Described current transformer for gathering TCSC low pressure physical model output current amount, and sends magnitude of current data to parametric controller, so that parameter display and the defencive function realizing Thyristor Controlled Seriescompensation TCSC; Described optic fibre switching plate is for receiving distant place knob simulation work mode telecommunication number and according to simulation work mode signal gating optical fibre channel; Relay signal, according to instruction, is issued the contactor node of TCSC low pressure physical model by parametric controller, control TCSC low pressure physical model input or out of service.
All optical fiber communication is adopted between described TCSC physical controller and optic fibre switching plate, between optic fibre switching plate and TCSC low pressure physical model; Optical fiber communication is adopted between the contactor of optic fibre switching plate and capacitive load physical model; Cable communication is adopted between the contactor of optic fibre switching plate and inductive load physical model.
Described Digital Simulation machine comprises industrial computer, digital simulation module and TCSC digital simulation model, and TCSC low pressure physical model, by optic fibre switching plate and emulation platform interface communication, realizes numerical model analysis copying.
The present invention also provides a kind of emulation mode of numerical model analysis analogue system of Thyristor Controlled Seriescompensation, and described emulation mode comprises following simulation work pattern:
1. low pressure physical model-controlled system controls low pressure physical model emulation mode of operation;
2. Digital Simulation machine controls low pressure physical model emulation mode of operation;
3. low pressure physical control system control figure realistic model main circuit simulation work pattern.
Described simulation work pattern 1. in, TCSC physical controller in low pressure physical model-controlled system controls the TCSC low pressure physical model of low pressure physical model, capacitive load physical model and inductive load physical model;
Described TCSC low pressure physical model, capacitive load physical model and inductive load physical model possess this locality or distant place switching function; After dropping into capacitive or inductive load physical model, change 380V electric pressure system equivalent impedance parameter, 380V busbar voltage rises or declines, after input TCSC low pressure physical model, improve the reactive power distribution of 380V electric pressure system, 380V busbar voltage declines or rises, and maintains within the scope of control objectives by 380V busbar voltage;
1. described simulation work pattern is analog simulation, exports idle with TCSC physical controller control TCSC low pressure physical model;
Described simulation work pattern 2. and 3. in numerical model analysis emulation, with Digital Simulation machine control TCSC low pressure physical model with the TCSC digital simulation model main circuit in TCSC physical controller control figure replicating machine.
Three kinds of working methods are changed by giving each low pressure physical model installing optic fibre switching plate mode of finishing the work, and optic fibre switching plate circuit diagram as shown in Figure 4.Change-over panel function is mainly:
1) distant place knob mode of operation electric signal is received;
2) according to mode of operation signal gating optical fibre channel.
Gating truth table is as follows:
| Working mode selection | A B | Practical function |
| 1 | 0 1 | Low pressure physical model-controlled system controls low pressure physical model |
| 2 | 0 0 | Digital Simulation machine controls low pressure physical model |
| 3 | 1 1 | Low pressure physical control system control figure realistic model main circuit |
Wherein, A represents the selection of major loop between the Thyristor Controlled Seriescompensation and digital main circuit of reality of TCSC, and B represents the selection of TCSC controller between physical controller and digitial controller.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (9)
1. a numerical model analysis analogue system for Thyristor Controlled Seriescompensation, is characterized in that, described system is used for technical skill training, comprises low pressure physical model, low pressure physical model-controlled system and Digital Simulation machine; Low pressure physical Model Independent is controlled by low pressure physical model-controlled system when running, and is controlled by Digital Simulation machine when carrying out numerical model analysis emulation; Described low pressure physical model-controlled system can TCSC digital simulation model main circuit in control figure replicating machine.
2. numerical model analysis analogue system as claimed in claim 1, it is characterized in that, described low pressure physical model comprises TCSC low pressure physical model, ultra-high-tension power transmission line model, inductive load physical model, capacitive load physical model and communication system; Ultra-high-tension power transmission line model comprises structure identical circuit I and circuit II; Described circuit I and circuit II all accesses in 380V electric pressure system; Described TCSC low pressure physical model is between circuit I and circuit II; Described inductive load physical model and capacitive load physical model access in 380V electric pressure system.
3. numerical model analysis analogue system as claimed in claim 2, it is characterized in that, described TCSC low pressure physical model is Thyristor Controlled Seriescompensation, comprises thyristor valve, inductance and capacitor, and described thyristor valve and inductance are in parallel with capacitor after connecting; Described circuit I and circuit II includes two capacitors and inductance; One end ground connection of one of them capacitor, the other end is connected with one end of inductance; The other end of inductance is connected with one end of another capacitor; The other end ground connection of another capacitor.
4. numerical model analysis analogue system as claimed in claim 1, it is characterized in that, described low pressure physical model-controlled system comprises parametric controller, TCSC physical controller, voltage transformer (VT), current transformer, optic fibre switching plate and replicating machine; Described parametric controller is by optic fibre switching plate control TCSC low pressure physical model, inductive load physical model and capacitive load physical model respectively; Described TCSC physical controller is arranged between parametric controller and optic fibre switching plate; Described voltage transformer (VT) is connected in 380V electric pressure system; Described current transformer is connected with TCSC low pressure physical model; Described TCSC low pressure physical model, inductive load physical model are connected with replicating machine respectively by photoelectric conversion plate with capacitive load physical model;
Described low pressure physical model-controlled system is for realizing the data acquisition of low pressure physical model, Control protection and man-machine interaction; comprise: 1) possess gather Control protection and man-machine interface display needed for analog quantity and switching value function; 2) operation of TCSC low pressure physical model switching is completed; 3) the experimental teaching function of TCSC low pressure physical model is completed; 4) when there is low pressure physical model-controlled system abnormality, ensure that TCSC low pressure physical model misoperation does not occur.
5. numerical model analysis analogue system as claimed in claim 4, it is characterized in that, described parametric controller and TCSC controller are powered by independent current source; Described voltage transformer (VT) is used for acquisition system voltage; Described current transformer for gathering TCSC low pressure physical model output current amount, and sends magnitude of current data to parametric controller, so that parameter display and the defencive function realizing Thyristor Controlled Seriescompensation TCSC; Described optic fibre switching plate is for receiving distant place knob simulation work mode telecommunication number and according to simulation work mode signal gating optical fibre channel; Relay signal, according to instruction, is issued the contactor node of TCSC low pressure physical model by parametric controller, control TCSC low pressure physical model input or out of service.
6. numerical model analysis analogue system as claimed in claim 4, is characterized in that, all adopt optical fiber communication between described TCSC physical controller and optic fibre switching plate, between optic fibre switching plate and TCSC low pressure physical model; Optical fiber communication is adopted between the contactor of optic fibre switching plate and capacitive load physical model; Cable communication is adopted between the contactor of optic fibre switching plate and inductive load physical model.
7. numerical model analysis analogue system as claimed in claim 1; it is characterized in that; described Digital Simulation machine comprises industrial computer, digital simulation module and TCSC digital simulation model, and TCSC low pressure physical model, by optic fibre switching plate and emulation platform interface communication, realizes numerical model analysis copying.
8. the emulation mode of the numerical model analysis analogue system of a kind of Thyristor Controlled Seriescompensation according to any one of claim 1-7, is characterized in that, described emulation mode comprises following simulation work pattern:
1. low pressure physical model-controlled system controls low pressure physical model emulation mode of operation;
2. Digital Simulation machine controls low pressure physical model emulation mode of operation;
3. low pressure physical control system control figure realistic model main circuit simulation work pattern.
9. emulation mode as claimed in claim 8, it is characterized in that, described simulation work pattern 1. in, TCSC physical controller in low pressure physical model-controlled system controls the TCSC low pressure physical model of low pressure physical model, capacitive load physical model and inductive load physical model;
Described TCSC low pressure physical model, capacitive load physical model and inductive load physical model possess this locality or distant place switching function; After dropping into capacitive or inductive load physical model, change 380V electric pressure system equivalent impedance parameter, 380V busbar voltage rises or declines, after input TCSC low pressure physical model, improve the reactive power distribution of 380V electric pressure system, 380V busbar voltage declines or rises, and maintains within the scope of control objectives by 380V busbar voltage;
1. described simulation work pattern is analog simulation, exports idle with TCSC physical controller control TCSC low pressure physical model;
Described simulation work pattern 2. and 3. in numerical model analysis emulation, with Digital Simulation machine control TCSC low pressure physical model with the TCSC digital simulation model main circuit in TCSC physical controller control figure replicating machine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109523859A (en) * | 2018-12-19 | 2019-03-26 | 南京南瑞继保电气有限公司 | A kind of track traffic synthetic monitoring mixing Training Simulation System and method |
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| CN202306916U (en) * | 2011-10-19 | 2012-07-04 | 武汉大学 | Open modularized power electronic experimental development platform |
| CN202736379U (en) * | 2012-06-11 | 2013-02-13 | 冀北电力有限公司 | Transformer station comprehensive automation skill training system |
| CN103500529A (en) * | 2013-09-30 | 2014-01-08 | 国家电网公司 | Power electronic digital-analog hybrid system for technical skill training |
| WO2014135220A1 (en) * | 2013-03-08 | 2014-09-12 | Abb Technology Ltd | Protection of a thyristor valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202306916U (en) * | 2011-10-19 | 2012-07-04 | 武汉大学 | Open modularized power electronic experimental development platform |
| CN202736379U (en) * | 2012-06-11 | 2013-02-13 | 冀北电力有限公司 | Transformer station comprehensive automation skill training system |
| WO2014135220A1 (en) * | 2013-03-08 | 2014-09-12 | Abb Technology Ltd | Protection of a thyristor valve |
| CN103500529A (en) * | 2013-09-30 | 2014-01-08 | 国家电网公司 | Power electronic digital-analog hybrid system for technical skill training |
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| CN109523859A (en) * | 2018-12-19 | 2019-03-26 | 南京南瑞继保电气有限公司 | A kind of track traffic synthetic monitoring mixing Training Simulation System and method |
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