CN204740447U - Black start -up scheme overall process system that checks of electric wire netting based on real -time digital simulation - Google Patents
Black start -up scheme overall process system that checks of electric wire netting based on real -time digital simulation Download PDFInfo
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- CN204740447U CN204740447U CN201520280802.2U CN201520280802U CN204740447U CN 204740447 U CN204740447 U CN 204740447U CN 201520280802 U CN201520280802 U CN 201520280802U CN 204740447 U CN204740447 U CN 204740447U
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Abstract
The utility model relates to a black start -up scheme overall process system that checks of electric wire netting based on real -time digital simulation is provided with real -time digital simulation appearance, with real -time digital simulation appearance is connected, receives the voltage of real -time digital simulation appearance output, the power amplifier of electric current emulation signal, with power amplifier connects, receives the signal of voltage and current's that the power amplifier gain is enlargied fault oscillograph, with real -time digital simulation appearance and fault oscillograph connect, will the control signal of mimic -disconnecting switch exports to real -time digital simulation appearance is realized deceiving the control that starts the model circuit breaker and open and shut to the electric wire netting, simultaneously the mimic -disconnecting switch still with the conveying of circuit breaker control signal extremely fault oscillograph. Consequently the utility model discloses an unify to build pattern to the black overall process that starts, carry out emulation according to the true black operation process of start -up and check to greatly be similar to the authenticity, guaranteed the objectivity of the work of checking.
Description
Technical field
The utility model belongs to power grid"black-start" technical field, particularly relates to a kind of Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation.
Background technology
At present, black starting-up process generally comprises black starting-up unit starting, black starting-up set grid-connection, black starting-up path restores electricity (circuit namely in path, Transformer Close are charged), is activated the processes such as station-service load (subsidiary engine) startup of unit.Therefore black-start scheme is checked and should be considered said process, generally comprises that black starting-up unit self-excitation is checked, power-frequency overvoltage is checked in start-up course, sky fills that long transmission line switching overvoltage is checked, sky fills voltage that transformer operating superpotential checks and be activated in unit station-service load input process and frequency is checked.
" Automation of Electric Systems " 21 phases in 2012--Black-start Schemes of Electric Power Grid assessment indicator system and application Zhao Da tie up Liu Tian Qi Lixing source Tang Jian---, the method that there is no carried out assessing to black-start scheme comprehensively, effectively in view of problems such as existing evaluation index are incomplete, appraisal procedure exists subjectivity and evaluation scheme is incomplete.For this reason, propose and establish Black-start Schemes of Electric Power Grid assessment indicator system, containing power up, load access, grid structure, grid-connected preparation the contents such as network process, release time, frequency stabilization, change in voltage and recovery benefit.Evaluation index is divided into direct parameter and indirectly obtains index, can ask for respectively by the analysis of black-start scheme and Digital Simulation.Based on index calculate value, use principal component analysis (PCA) to calculate the objective evaluation value of each sets of plan, relative optimal case can be found.This assessment indicator system can be dispatching of power netwoks operation department assessment black-start scheme and provides decision-making foundation.
Black starting-up refers to that whole electrical network is because of after fault outage to " University Of Tianjin " 2012--black-start scheme assists automatic creation system Zhao Zi bright--, by having the genset of self-startup ability in the side group of external electrical network or system, the generator unit of non self starting in start up system, realization is incorporated into the power networks, form subsystem, progressively expand service area, finally realize the process that whole network load recovers.Along with China's power consumption improves year by year, the scale of electrical network is increasing, and the dynamic behaviour of system becomes increasingly complex, and the probability being caused electric system disaster by local fault is increasing.The large-scale blackout that recent domestic occurs causes massive losses to national economy, and the formulation of black starting-up path recovery scheme obtains the attention of domestic and international work about electric power person gradually, and becomes one of its routine work.Assisting automatic creation system to study for inscribing with black-start scheme herein, achieving certain achievement.The principal and demand that should be noted that when first describing the general process of black starting-up herein and formulate black-start scheme, next discusses the requirement of black starting-up to generator unit electrical secondary system, selective analysis have studied that the black starting-up power supply that runs in black starting-up process is selected, self-excitation is checked, power-frequency overvoltage is checked, switching overvoltage is checked, band station-service load time voltage and frequency check, preliminary recover after the cyclization problem etc. of mini system stability assessment and subsystem.And then utilize RTDS and BPA respectively, PSCAD two overlaps emulation tool, carried out calculating checking to a black starting-up route scheme in Tianjin Power Grid, and comparative analysis carried out to its simulation result.Finally, herein in conjunction with a set of visual power grid"black-start" auxiliary decision-making support system of figure modeling technique, database technology and Electrical power system analysis and computing technological development.Graphics system and database combination are formed graphic and model integration platform by this system, have the features such as the strong and perfect in shape and function of friendly interface, interactivity; Include rule-based black starting-up path automatic generating calculation in system and form black starting-up initial path scheme, both avoided and the loaded down with trivial details of black starting-up initial path is manually provided, the omission of Rational Path can be avoided again; Path analysis function included in system and data management, both separate, can cooperatively interact again, and define a complete entirety.And then the derivation of the analysis result that system provides, can generate black starting-up initial analysis report, significantly reduces the pressure writing analysis report.
Only carry out simulation calculation for above-mentioned Single-issue in current existing check method, one by one modeling and simulating is carried out to each problem, but black starting-up process is a continuous print process, this process is isolated and carries out single analysis, will inevitably affect and check emulation correctness.
Utility model content
The utility model is that what solve that current existing black starting-up check method exists is only carry out modeling and simulating for Single-issue, and impact is checked the technical matters of emulation correctness and provides the Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation that a kind of structure is simple, easy to install, increase work efficiency.
The technical scheme that the utility model is taked for the technical matters existed in solution known technology is:
Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation of the present utility model is provided with real-time digital simulator; Can the information of Real-time Obtaining voltage and current, for power grid"black-start" provides reliable data;
Be connected with described real-time digital simulator, receive the voltage of described real-time digital simulator output, the power amplifier of current simulations signal;
Be connected with described power amplifier, receive the fault oscillograph of the voltage and current signal that described power amplifier gain amplifies;
Be connected with described real-time digital simulator and fault oscillograph, export the control signal of described mimic-disconnecting switch to described real-time digital simulator, realize the control to the folding of power grid"black-start" model isolating switch, breaker control signal is also sent to the mimic-disconnecting switch of described fault oscillograph by described mimic-disconnecting switch simultaneously.
Be connected with described real-time digital simulator, for black starting-up model buildings, the workstation PC of system cloud gray model control and data monitoring.
Be connected with described real-time digital simulator, the technical parameter of application memory grid equipment, by workstation PC called data, and be transferred to real-time digital simulator and complete electrical network that in electric network model, each parameter is filled in actual measurement parameter library.
Further, described power amplifier comprises amplifier transistor, resonant circuit and multiple-order low-pass wave filter; Described resonant circuit is serially connected between described amplifier transistor collector and power supply terminal, and described multiple-order low-pass wave filter is connected between described amplifier transistor and signal output part, and signal input part connects the base stage of described amplifier transistor; Reliably can amplify input signal, and energy loss is little.
Described resonant circuit comprises the capacitor of inductance and multiple parallel connection;
Described capacitor comprises electrochemical capacitor;
Described amplifier transistor is triode, and the side of described triode is provided with radiating block; Structure is simple, good heat dissipation effect, can prevent triode from burning out, avoid electronic devices and components to damage.
The present invention proposes the Black-start Schemes of Electric Power Grid whole process simulation nucleus correcting system based on real-timedigital simulation, unified Modeling is carried out to black starting-up overall process, carry out emulation according to true black starting-up operating process to check, with greatly approximate authenticity, ensure the objectivity of check work.
Accompanying drawing explanation
Fig. 1 is the Black-start Schemes of Electric Power Grid overall process nucleus correcting system structural representation based on real-timedigital simulation that the utility model embodiment provides;
In figure: 1, fault oscillograph; 2, power amplifier; 3, mimic-disconnecting switch; 4, workstation PC; 5, electrical network actual measurement parameter library; 6, real-time digital simulator.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows.
Refer to Fig. 1:
As shown in Figure 1, the Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation of the utility model embodiment mainly comprises: the actual measurement of fault oscillograph 1, power amplifier 2, mimic-disconnecting switch 3, workstation PC4, electrical network parameter library 5, real-time digital simulator 6;
Workstation PC4, be used for controlling whole system and run, comprise black starting-up model buildings, system cloud gray model controls and data monitoring;
Electrical network actual measurement parameter library 5, store the technical parameter of grid equipment (generator, transformer, isolating switch, circuit, motor, load etc.), workstation PC4 can from this parameter library called data, and be transferred to the real-time real-time digital simulator of electric system 6 (calling RTDS system in the following text) and complete filling in of each parameter in electric network model;
Real-time digital simulator 6, has been used for the operating condition emulation of power grid"black-start" system, and line voltage, current simulations signal (5V small-signal) is exported according to the instruction of workstation;
Power amplifier 2, receives voltage, current simulations signal that real-time digital simulator 6 exports, and signal is zoomed into electric current and voltage (two sub-values) signal to fault oscillograph 1 according to gain;
Described power amplifier 1 comprises amplifier transistor, resonant circuit and multiple-order low-pass wave filter; Described resonant circuit is serially connected between described amplifier transistor collector and power supply terminal, and described multiple-order low-pass wave filter is connected between described amplifier transistor and signal output part, and signal input part connects the base stage of described amplifier transistor;
Described resonant circuit comprises the capacitor of inductance and multiple parallel connection;
Described capacitor comprises electrochemical capacitor;
Described amplifier transistor is triode, and the side of described triode is provided with radiating block.
Mimic-disconnecting switch 3, exports the control signal of mimic-disconnecting switch 3 to real-time digital simulator 6, realizes the control to the folding of power grid"black-start" model isolating switch, and breaker control signal is also sent to fault oscillograph 1 by mimic-disconnecting switch 3 simultaneously;
Fault oscillograph 1, electric current and voltage (two sub-values) signal received by autostore and breaker control signal, terminate laggard row data analysis in order to experiment and use.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (3)
1. based on a Black-start Schemes of Electric Power Grid overall process nucleus correcting system for real-timedigital simulation, it is characterized in that, the described Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation is provided with real-time digital simulator;
Be connected with described real-time digital simulator, receive the voltage of described real-time digital simulator output, the power amplifier of current simulations signal;
Be connected with described power amplifier, receive the fault oscillograph of the voltage and current signal that described power amplifier gain amplifies;
Be connected with described real-time digital simulator and fault oscillograph, export the control signal of mimic-disconnecting switch to described real-time digital simulator, realize the control to the folding of power grid"black-start" model isolating switch, breaker control signal is also sent to the mimic-disconnecting switch of described fault oscillograph by mimic-disconnecting switch simultaneously.
2., as claimed in claim 1 based on the Black-start Schemes of Electric Power Grid overall process nucleus correcting system of real-timedigital simulation, it is characterized in that, the described Black-start Schemes of Electric Power Grid overall process nucleus correcting system based on real-timedigital simulation also comprises:
Be connected with described real-time digital simulator, for black starting-up model buildings, the workstation PC of system cloud gray model control and data monitoring.
3., as claimed in claim 1 based on the Black-start Schemes of Electric Power Grid overall process nucleus correcting system of real-timedigital simulation, it is characterized in that, described power amplifier comprises amplifier transistor, resonant circuit and multiple-order low-pass wave filter; Described resonant circuit is serially connected between described amplifier transistor collector and power supply terminal, and described multiple-order low-pass wave filter is connected between described amplifier transistor and signal output part, and signal input part connects the base stage of described amplifier transistor;
Described resonant circuit comprises the capacitor of inductance and multiple parallel connection;
Described capacitor comprises electrochemical capacitor;
Described amplifier transistor is triode, and the side of described triode is provided with radiating block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520280802.2U CN204740447U (en) | 2015-05-04 | 2015-05-04 | Black start -up scheme overall process system that checks of electric wire netting based on real -time digital simulation |
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| CN201520280802.2U CN204740447U (en) | 2015-05-04 | 2015-05-04 | Black start -up scheme overall process system that checks of electric wire netting based on real -time digital simulation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743221A (en) * | 2016-03-22 | 2016-07-06 | 国网山东省电力公司潍坊供电公司 | Black-start comprehensive verification system of power system and method of black-start comprehensive verification system |
| CN111221266A (en) * | 2020-01-20 | 2020-06-02 | 上海电气风电集团股份有限公司 | Simulation test system and test method suitable for microgrid black start |
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2015
- 2015-05-04 CN CN201520280802.2U patent/CN204740447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743221A (en) * | 2016-03-22 | 2016-07-06 | 国网山东省电力公司潍坊供电公司 | Black-start comprehensive verification system of power system and method of black-start comprehensive verification system |
| CN111221266A (en) * | 2020-01-20 | 2020-06-02 | 上海电气风电集团股份有限公司 | Simulation test system and test method suitable for microgrid black start |
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