CN110726889A - Test method and system for test model of large phase modulation machine transformer bank protection system - Google Patents
Test method and system for test model of large phase modulation machine transformer bank protection system Download PDFInfo
- Publication number
- CN110726889A CN110726889A CN201910904842.2A CN201910904842A CN110726889A CN 110726889 A CN110726889 A CN 110726889A CN 201910904842 A CN201910904842 A CN 201910904842A CN 110726889 A CN110726889 A CN 110726889A
- Authority
- CN
- China
- Prior art keywords
- test
- phase modulation
- model
- excitation
- starting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a test method and a test system for a large phase modulation machine transformer bank protection test model, which are characterized in that physical test parameters are input to a pre-constructed large phase modulation machine set relay protection physical test system model comprising a phase modulation machine test unit, primary equipment and secondary equipment, the physical test operation condition of a phase modulation machine is output, and the test unit selects the test unit of an equivalent scaling model according to the physical characteristics of a real machine of the phase modulation machine; inputting simulation experiment parameters to a pre-constructed relay protection simulation test system model of the large phase modulation unit combining the RTDS and secondary equipment for practical engineering, and outputting the simulation test operation condition of the phase modulation unit. The advantages are that: the method utilizes physical characteristics of a physical moving mold and a phase modulator real machine to carry out effective model scaling, and establishes a relay protection physical test system covering a test unit and a large phase modulator unit of primary and secondary equipment; the RTDS can be used for simulating the actual parameters of the phase modulation unit, and the two test models supplement each other to ensure the reliability of the test together.
Description
Technical Field
The invention relates to a test model test method and a test model test system for a large phase modulation machine transformer bank protection system, and belongs to the technical field of relay protection of power systems.
Background
With the rapid development of extra-high voltage direct current, the large-scale development of clean energy and the centralized appearance of large-proportion power receiving areas, the characteristics of a power grid are greatly changed, and the problems of reduction of dynamic reactive power reserves and insufficient voltage support of partial areas are prominent, so that the method becomes one of the main problems of safety and stability of a large power grid. This requires the large-scale active power transmission of direct current objectively, and must match with large-scale dynamic reactive power, i.e. "large direct current transmission, strong reactive power support". With the increasingly prominent strong and weak alternating current problem of the power grid, the deployment process of the large phase modulator on the transmitting end and receiving end power grids of the extra-high voltage direct current engineering is accelerated, and the method has important significance for improving the voltage stability and the dynamic reactive power support capability of the extra-high voltage alternating current and direct current hybrid power grid. Transient voltage rising and short circuit capacity supporting problems can be caused by the phase change failure of an extra-high voltage direct current weak transmitting end system in the prior art, and the requirements of an extra-high voltage multi-feed receiving end system on quick reactive power regulation and overload capacity of a phase-change machine cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a test model test method and a test model test system for a large phase modulation unit protection and operation control system, provides an effective method for a performance test of a large phase modulation unit protection device, ensures the operation reliability of a large phase modulation unit transformer bank protection system, and provides important support for the safe and stable operation of an extra-high voltage alternating current-direct current hybrid power grid.
In order to solve the technical problem, the invention provides a test method of a large phase modulation machine transformer bank protection test model, which comprises the steps of inputting physical test parameters to a pre-constructed large phase modulation machine relay protection physical test system model containing a phase modulation machine test unit, primary equipment and secondary equipment, outputting a phase modulation machine physical test operation condition, and selecting the test unit of an equivalent scaling model by the test unit according to the physical characteristics of a phase modulation machine real machine;
inputting simulation experiment parameters to a pre-constructed relay protection simulation test system model of the large phase modulation unit combining the RTDS and secondary equipment for practical engineering, and outputting the operating condition of the phase modulation unit simulation test;
the phase modulator physical test operation working condition and the phase modulator simulation test operation working condition form all test operation working conditions protected by the phase modulator transformer bank.
Further, the relay protection physical test system of the large phase modulation unit comprises a test unit, a step-up transformer, a high-voltage side system, an SFC variable frequency starting system, an excitation system, a synchronization device and a DCS system;
the test unit is connected to a high-voltage side system through a step-up transformer, the SFC variable-frequency starting system is dragged to a preset exit rotating speed by the SFC variable-frequency starting system when starting, the SFC variable-frequency starting system exits, and a synchronous device captures grid connection when the standby unit idles to the preset grid connection rotating speed;
the excitation system comprises a main excitation system and a starting excitation system, wherein the main excitation system adopts a self-shunt excitation mode and is responsible for excitation control during normal operation and idling; the starting excitation system adopts a separate excitation mode and is responsible for excitation control during SFC dragging, and the two excitation modes are automatically switched according to the DCS system in the running and starting process of the phase modulator.
The starting excitation system is further characterized by comprising a controller, a rectifier bridge and a direct current switching circuit of main excitation, wherein the starting excitation system is controlled by the SFC frequency conversion starting system and outputs excitation current required by the SFC frequency conversion starting system; the SFC variable frequency starting system exits the operation stage, and the main excitation system is put into operation;
furthermore, the SFC frequency conversion starting system adopts a high-low structure, 12-6 pulse waves, the thyristor adopts a photoelectric triggering mode, and the starting time requirement is not more than 10 minutes; adjusting the wave inductance value according to the U/I ratio to ensure that an RTDS test model in the relay protection simulation test system of the large phase modulation unit is consistent with a field, wherein U and I respectively represent a terminal voltage and a stator current;
furthermore, the test unit increases the rotational inertia of the phase modulation unit of the test unit by increasing flywheel sheets; the test unit is connected with an adjustable ground capacitor and simultaneously connected with a grounding transformer and secondary load resistance equipment; and setting stator grounding, rotor grounding and inter-turn faults of the phase modulator, and various types of faults inside and outside the phase modulator, the excitation transformer and the boosting transformer area at different frequency stages and different protection ranges in the whole operation process of the phase modulator of the test unit.
Further, the relay protection simulation test system of the large phase modulation unit comprises a phase modulation machine simulation model, a booster transformer model, a high-voltage side system model, a grounding transformer model, a pulse rectification loop model and a pulse rectification and inversion loop model which are established by RTDS, wherein parameters of each model are set according to an actual engineering system;
the phase modulation machine simulation model established by the RTDS is used for inputting transient reactance, sub-transient reactance and resistance moment parameters of an actual large phase modulation machine set, establishing a mathematical model of mechanical moment of the phase modulation machine, and outputting a starting frequency boosting and boosting, idling synchronous grid connection and quick restarting process which are consistent with the actual large phase modulation machine set;
the pulse rectification loop model is a six-pulse rectification loop model built through a thyristor model of an RTDS component library, the six-pulse rectification loop model is matched with an actual excitation device trigger pulse to build a separate excitation loop and a main excitation loop, and the separate excitation loop and the main excitation loop are switched in the starting and grid-connection process of the phase modulator and are consistent with an actual excitation system of the phase modulator in engineering;
the pulse rectification and inversion loop model is a pulse rectification and inversion loop model built through a thyristor model of an RTDS component library and is matched with an actual SFC device trigger pulse to form an SFC variable-frequency starting loop, and the starting time, the starting injection current and the starting voltage transformation are the same as those of an engineering phase modulation unit.
A large phase regulator transformer bank protection RTDS simulation test model test system comprises a physical test system module, a simulation test system module and a phase regulator transformer bank test composition module;
the physical test system module is used for inputting physical test parameters to a pre-constructed large phase modulation unit relay protection physical test system model containing a phase modulation unit test unit, primary equipment and secondary equipment, outputting a phase modulation unit physical test operation condition, and selecting the test unit of an equivalent scaling model by the test unit according to the physical characteristics of a phase modulation unit real machine;
the simulation test system module is used for inputting simulation test parameters to a pre-constructed relay protection simulation test system model of the large phase modulation unit combining the RTDS and secondary equipment for practical engineering and outputting the operating condition of the phase modulation unit simulation test;
the phase modulator transformer bank test composition module is used for forming the physical test operation condition of the phase modulator and the simulation test operation condition of the phase modulator into all test operation conditions protected by the phase modulator transformer bank.
Further, the physical test system module comprises a test set module, a step-up transformer module, a physical test high-voltage side system module, an SFC variable frequency starting system module, an excitation system module, a synchronization device module and a DCS system module;
the testing machine set module is used for being connected into a physical testing high-voltage side system module through the step-up transformer module, the SFC frequency conversion starting system module is dragged to a preset exit rotating speed by the SFC frequency conversion starting system module when starting the machine, then the SFC frequency conversion starting system module exits, and a synchronous device captures grid connection when the standby set idles to the preset grid connection rotating speed;
the excitation system module comprises a main excitation module and a starting excitation module, wherein the main excitation module adopts a self-shunt excitation mode and is responsible for excitation control during normal operation and idling; the starting excitation module adopts a separate excitation mode and is responsible for excitation control during SFC dragging, and the two excitation modes are automatically switched according to a DCS system in the running and starting process of the phase modulator.
Furthermore, the starting excitation module comprises a controller, a rectifier bridge and a direct current switching circuit of main excitation, the starting excitation is controlled by the SFC frequency conversion starting system, and excitation current required by the SFC frequency conversion starting system is output; and the SFC variable frequency starting system exits the operation stage, and the main excitation module is put into operation.
Furthermore, the SFC frequency conversion starting system module adopts a high-low structure, 12-6 pulse waves, the thyristor adopts a photoelectric triggering mode, and the starting time requirement is not more than 10 minutes; and adjusting the wave inductance value according to the U/I ratio, so that an RTDS test model in the relay protection simulation test system of the large phase modulation unit is consistent with a field, and U and I respectively represent a terminal voltage and a stator current.
Furthermore, the testing machine set module is used for increasing the rotational inertia of the phase modulation machine set of the testing machine set by increasing flywheel sheets; the test unit is connected with an adjustable ground capacitor and simultaneously connected with a grounding transformer and secondary load resistance equipment; and setting stator grounding, rotor grounding and inter-turn faults of the phase modulator, and various types of faults inside and outside the phase modulator, the excitation transformer and the boosting transformer area at different frequency stages and different protection ranges in the whole operation process of the phase modulator of the test unit.
Furthermore, the simulation test system module comprises a phase modulator simulation module, a step-up transformer module, a simulation test high-voltage side system module, a grounding transformer module, a pulse rectification loop module and a pulse rectification and inversion loop module which are established by RTDS, and parameters of each module are set according to an actual engineering system;
the phase modulation machine simulation module established by the RTDS is used for inputting transient reactance, sub-transient reactance and resistance moment parameters of an actual large phase modulation machine set, establishing a mathematical model of mechanical moment of the phase modulation machine, and outputting a starting frequency boosting and boosting, idling synchronous grid connection and quick restarting process which are consistent with the actual large phase modulation machine set;
the pulse rectification loop module is used for building a six-pulse rectification loop model through a thyristor model of an RTDS component library, the six-pulse rectification loop model is matched with an actual excitation device trigger pulse to build a separate excitation loop and a main excitation loop, and the separate excitation loop and the main excitation loop are switched in the process of starting and connecting the phase modulator and the power system, and are consistent with an actual excitation system of the phase modulator in engineering;
the pulse rectification and inversion loop module is used for building a pulse rectification and inversion loop model through a thyristor model of an RTDS component library, the pulse rectification and inversion loop model is matched with an actual SFC device trigger pulse to form an SFC variable-frequency starting loop, and starting time, starting injection current and starting voltage transformation are the same as those of an engineering phase modulation unit.
The invention achieves the following beneficial effects:
the method utilizes physical moving die and phase modulator real machine physical characteristics to carry out effective scaling of the model, and establishes a large phase modulator unit relay protection physical test system covering primary and secondary equipment; the RTDS can be used for simulating the actual parameters of the phase modulation unit, and a relay protection simulation test system of the large phase modulation unit combining the RTDS and the entity secondary equipment is established. The two test models supplement each other to ensure the reliability of the relay protection performance test of the large phase modulation unit.
Drawings
Fig. 1 is a wiring diagram of a test model of a large phase modulator transformer bank protection system of the invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A test method for a large phase modulator transformer bank protection test model comprises the steps of inputting phase modulator transformer bank protection physical test parameters to a pre-constructed large phase modulator relay protection physical test system model comprising a phase modulator test unit, primary equipment and secondary equipment, outputting a phase modulator physical test operation condition, and selecting the test unit of an equivalent scaling model by the test unit according to the physical characteristics of a real phase modulator;
inputting the protection simulation experiment parameters of the phase modulation machine transformer set to a pre-constructed relay protection simulation experiment system model of the large phase modulation machine set, which combines an RTDS (real time digital system) and secondary equipment for practical engineering, and outputting the operation condition of the phase modulation machine simulation experiment;
the phase modulator physical test operation working condition and the phase modulator simulation test operation working condition form all test operation working conditions protected by the phase modulator transformer bank.
As shown in fig. 1, firstly, establishing a physical test model of a large phase modulation transformer bank protection system, the establishing steps are as follows:
1) selecting test model equipment of the equivalent scaling model, and simulating an actual phase modulation unit with the capacity of 300Mvar/20kV by adopting a unit model with the capacity of 30 kVA/400V. And the high-voltage side system is connected through a step-up transformer. An SFC variable frequency starting system, an excitation system, a synchronization device and a DCS system for intelligently managing the whole operation process are accessed according to the attached figure 1.
2) The phase modulator adopts an idling grid-connected mode, the SFC is dragged to rotate at 3150r/min during startup and then quits, and the standby unit is caught and connected by a synchronous device when idling is around 3000 r/min. The model needs to increase the rotary inertia of the phase modulation unit, and the inertia is increased by increasing flywheel pieces (for example, the original inertia J of the unit is m R2/2, 1/2 × 19kg × 0.3752, 1.336 × 6, 8.016kg.m2, the newly increased inertia J of m R2/2, 1/2 × 23.5kg × 0.322, 1.2 × 10, 12kg.m2), and the characteristics of a large unit are simulated on a small platform. The idle time and the grid-connected time of the phase modulation unit in the physical dynamic simulation test system of the phase modulation unit are close to or the same as those of an actual field phase modulation unit;
3) the SFC frequency conversion starting system usually adopts a high-low structure, 12-6 pulse waves (12 pulse wave rectification and 6 pulse wave inversion) and thyristors adopt a photoelectric triggering mode, and the starting time requirement is not more than 10 minutes; adjusting the wave inductance value according to the U/I ratio to enable the test system model to be close to or consistent with the field; in the whole starting control process of the static frequency converter control system, the stator current, the rotor current and the rotating speed of the motor have a certain matching relation. And a double closed-loop control mode, namely rotating speed outer loop control and current inner loop control, is adopted. The two closed-loop control systems act together to realize the stable start of the synchronous unit until the synchronous unit is rotated at a self-sustaining speed or is connected to the grid;
4) the excitation system comprises main excitation and starting excitation, wherein the main excitation adopts a self-shunt excitation mode and is responsible for excitation control during normal operation and idling; and starting excitation in a separate excitation mode to control the excitation during the dragging of the SFC. The two excitation modes are automatically switched according to the intelligent management of a DCS (distributed control system) in the running and starting process of the phase modulator. The starting excitation system comprises a controller, a rectifier bridge and a direct current switching circuit of a main excitation, the starting excitation is controlled by the SFC frequency conversion starting system, and the excitation current required by the SFC frequency conversion starting system is output; the SFC system exits the operation stage, and the self-shunt excitation system is put into operation;
5) the adjustable ground capacitance is accessed into the model, the parameters of the capacitance distributed to the ground by the large phase modulator group are close to the actual field, and meanwhile, equipment such as a grounding transformer, a secondary load resistor and the like are accessed to simulate the phase modulator injection type stator grounding protection test;
6) in the whole operation process of the phase modulator, phase modulator stator grounding, rotor grounding, inter-turn faults, various types of faults inside and outside the phase modulator, excitation transformer and boosting transformer area and the like are arranged at different frequency stages and different equipment.
The physical test model of the large phase modulator transformer bank protection system can simulate the following phase modulator operation condition stages: the method comprises a separate excitation system input stage, a forced commutation stage after an SFC variable frequency starting system is input, a natural commutation stage after the SFC variable frequency starting system is input, a separate excitation conversion self-shunt excitation machine end stage, a phase modulator idling stage after the SFC variable frequency starting system is withdrawn, a separate excitation input machine end voltage rising to 2000V stage, a synchronous grid connection success stage, a synchronous grid connection failure demagnetization reduction machine end voltage drop to 1000V-1900V stage, a SFC variable frequency starting system input fast re-restart stage, a jump grid connection switch shutdown and a jump demagnetization switch, and can simulate phase modulation rotor grounding, inter-turn faults, transformer area internal and external faults and the like.
2. The method comprises the following steps of establishing a physical test model of a large phase modulator transformer bank protection system, wherein the model establishing step comprises the following steps:
1) the relay protection RTDS simulation test system for the large phase modulation unit comprises a phase modulation machine model, a booster transformer model, a high-voltage side system model and a grounding transformer model, wherein the phase modulation machine is boosted by the booster transformer and then connected with the high-voltage side system, and model parameters can be set according to an actual engineering system;
2) equating parameters such as transient reactance, sub-transient reactance, resistance moment and the like of the phase modulator, establishing a mathematical model of mechanical moment of the phase modulator, and conforming to the processes of starting, frequency boosting, voltage boosting, idling synchronous grid connection and quick restarting of an actual phase modulator system;
3) the method comprises the following steps of building a six-pulse rectification loop by utilizing a thyristor model of an RTDS component library, matching with an excitation device trigger pulse, building a separate excitation loop and a main excitation loop, and realizing the switching of the separate excitation loop and the main excitation loop in the starting and grid-connection process of the phase modulator, wherein the switching of the separate excitation loop and the main excitation loop is consistent with the actual excitation system of the phase modulator in the engineering;
4) through a thyristor model of an RTDS component library, a 12-6 (12-pulse rectification, 6-pulse inversion) pulse rectification and inversion loop is built and matched with an SFC device trigger pulse to form an SFC variable frequency starting loop, and the starting time, starting injection current, starting voltage transformation and the like are similar or identical to those of an engineering phase modulation unit;
5) by means of semi-physical combined simulation of the physical equipment and the RTDS real-time digital simulation system, starting working conditions and operation working conditions after synchronization of SFC input slow uniform-speed boosting and frequency boosting, SFC exit rapid boosting idling and synchronization failure rapid restarting are simulated, and stator grounding, rotor grounding, inter-turn faults, transformer area internal and external faults and the like of the phase modulator at different frequency stages in the whole operation process of the phase modulator are set.
The relay protection simulation test system of the large phase modulation unit can simulate the starting working conditions of slow uniform speed boosting and frequency boosting of an SFC variable frequency starting system, rapid voltage boosting and idling quit of the SFC variable frequency starting system, rapid grid connection failure and rapid restarting of the SFC variable frequency starting system.
The physical test system can complete the rotor ground protection fault which cannot be simulated in the simulation test system, the simulation test system is more in accordance with the engineering practice in the process of capturing the synchronous closing window period compared with the physical test system, the simulation test system and the physical test system can simulate various faults and abnormal operation conditions of the large phase modulation unit more truly by combining the simulation test system and the physical test system, all test items of phase modulation unit transformer protection are covered, the relay protection performance of the large phase modulation unit transformer can be comprehensively verified, and the test reliability is improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (12)
1. A test method for a large phase modulation machine transformer bank protection test model is characterized in that physical test parameters are input to a pre-constructed large phase modulation machine set relay protection physical test system model comprising a phase modulation machine test unit, primary equipment and secondary equipment, the physical test operation condition of a phase modulation machine is output, and the test unit selects the test unit of an equivalent scaling model according to the physical characteristics of a real machine of the phase modulation machine;
inputting simulation experiment parameters to a pre-constructed relay protection simulation test system model of the large phase modulation unit combining the RTDS and secondary equipment for practical engineering, and outputting the operating condition of the phase modulation unit simulation test;
the phase modulator physical test operation working condition and the phase modulator simulation test operation working condition form all test operation working conditions protected by the phase modulator transformer bank.
2. The test method for the protection test model of the transformer bank of the large phase modulation machine according to claim 1, wherein the relay protection physical test system of the large phase modulation machine set comprises a test machine set, a boosting transformer, a high-voltage side system, an SFC (Small form-factor computer) variable-frequency starting system, an excitation system, a synchronization device and a DCS (distributed control System);
the test unit is connected to a high-voltage side system through a step-up transformer, the SFC variable-frequency starting system is dragged to a preset exit rotating speed by the SFC variable-frequency starting system when starting, the SFC variable-frequency starting system exits, and a synchronous device captures grid connection when the standby unit idles to the preset grid connection rotating speed;
the excitation system comprises a main excitation system and a starting excitation system, wherein the main excitation system adopts a self-shunt excitation mode and is responsible for excitation control during normal operation and idling; the starting excitation system adopts a separate excitation mode and is responsible for excitation control during SFC dragging, and the two excitation modes are automatically switched according to the DCS system in the running and starting process of the phase modulator.
3. The test method for the large phase modulation transformer bank protection test model as claimed in claim 2, wherein the starting excitation system comprises a controller, a rectifier bridge and a direct current switching circuit of a main excitation, the starting excitation is controlled by the SFC variable frequency starting system, and an excitation current required by the SFC variable frequency starting system is output; and the SFC variable frequency starting system exits the operation stage, and the main excitation system is put into operation.
4. The large-scale phase modifier transformer bank protection test model test method as claimed in claim 1, wherein the SFC variable frequency starting system adopts a high-low structure, 12-6 pulse waves, a thyristor adopts a photoelectric triggering mode, and the starting time is not more than 10 minutes; and adjusting the wave inductance value according to the U/I ratio, so that an RTDS test model in the relay protection simulation test system of the large phase modulation unit is consistent with a field, and U and I respectively represent a terminal voltage and a stator current.
5. The large phase modulation machine transformer bank protection test model test method as claimed in claim 1, wherein the test unit increases the rotational inertia of the phase modulation unit of the test unit by increasing flywheel pieces; the test unit is connected with an adjustable ground capacitor and simultaneously connected with a grounding transformer and secondary load resistance equipment; and setting stator grounding, rotor grounding and inter-turn faults of the phase modulator, and various types of faults inside and outside the phase modulator, the excitation transformer and the boosting transformer area at different frequency stages and different protection ranges in the whole operation process of the phase modulator of the test unit.
6. The large phase modulation machine transformer bank protection test model test method as claimed in claim 1, wherein the large phase modulation machine relay protection simulation test system comprises a phase modulation machine simulation model, a step-up transformer model, a high-voltage side system model, a grounding transformer model, a pulse rectification loop model, a pulse rectification and inversion loop model which are established by RTDS, and parameters of each model are set according to an actual engineering system;
the phase modulation machine simulation model established by the RTDS is used for inputting transient reactance, sub-transient reactance and resistance moment parameters of an actual large phase modulation machine set, establishing a mathematical model of mechanical moment of the phase modulation machine, and outputting a starting frequency boosting and boosting, idling synchronous grid connection and quick restarting process which are consistent with the actual large phase modulation machine set;
the pulse rectification loop model is a six-pulse rectification loop model built through a thyristor model of an RTDS component library, the six-pulse rectification loop model is matched with an actual excitation device trigger pulse to build a separate excitation loop and a main excitation loop, and the separate excitation loop and the main excitation loop are switched in the starting and grid-connection process of the phase modulator and are consistent with an actual excitation system of the phase modulator in engineering;
the pulse rectification and inversion loop model is a pulse rectification and inversion loop model built through a thyristor model of an RTDS component library and is matched with an actual SFC device trigger pulse to form an SFC variable-frequency starting loop, and the starting time, the starting injection current and the starting voltage transformation are the same as those of an engineering phase modulation unit.
7. A test system for a large phase modulator transformer bank protection test model is characterized in that,
the system comprises a physical test system module, a simulation test system module and a phase modulator transformer bank test composition module;
the physical test system module is used for inputting physical test parameters to a pre-constructed large phase modulation unit relay protection physical test system model containing a phase modulation unit test unit, primary equipment and secondary equipment, outputting a phase modulation unit physical test operation condition, and selecting the test unit of an equivalent scaling model by the test unit according to the physical characteristics of a phase modulation unit real machine;
the simulation test system module is used for inputting simulation test parameters to a pre-constructed relay protection simulation test system model of the large phase modulation unit combining the RTDS and secondary equipment for practical engineering and outputting the operating condition of the phase modulation unit simulation test;
the phase modulator transformer bank test composition module is used for forming the physical test operation condition of the phase modulator and the simulation test operation condition of the phase modulator into all test operation conditions protected by the phase modulator transformer bank.
8. The large-scale phase modulation machine transformer bank protection test model test system according to claim 1, wherein the physical test system module comprises a test machine set module, a step-up transformer module, a physical test high-voltage side system module, an SFC variable frequency starting system module, an excitation system module, a synchronization device module and a DCS system module;
the testing machine set module is used for being connected into a physical testing high-voltage side system module through the step-up transformer module, the SFC frequency conversion starting system module is dragged to a preset exit rotating speed by the SFC frequency conversion starting system module when starting the machine, then the SFC frequency conversion starting system module exits, and a synchronous device captures grid connection when the standby set idles to the preset grid connection rotating speed;
the excitation system module comprises a main excitation module and a starting excitation module, wherein the main excitation module adopts a self-shunt excitation mode and is responsible for excitation control during normal operation and idling; the starting excitation module adopts a separate excitation mode and is responsible for excitation control during SFC dragging, and the two excitation modes are automatically switched according to a DCS system in the running and starting process of the phase modulator.
9. The large-scale phase modulation transformer bank protection test model test system according to claim 8, wherein the starting excitation module comprises a controller, a rectifier bridge and a direct current switching circuit of a main excitation, the starting excitation is controlled by an SFC variable frequency starting system, and an excitation current required by the SFC variable frequency starting system is output; and the SFC variable frequency starting system exits the operation stage, and the main excitation module is put into operation.
10. The large-scale phase modifier transformer bank protection test model test system of claim 7, wherein the SFC frequency conversion starting system module adopts a high-low structure, 12-6 pulse waves, a thyristor adopts a photoelectric triggering mode, and the starting time is not more than 10 minutes; and adjusting the wave inductance value according to the U/I ratio, so that an RTDS test model in the relay protection simulation test system of the large phase modulation unit is consistent with a field, and U and I respectively represent a terminal voltage and a stator current.
11. The large phase modulation machine transformer bank protection test model test system as claimed in claim 7, wherein the test machine set module is used for increasing the rotational inertia of the phase modulation machine set of the test machine set by adding flywheel sheets; the test unit is connected with an adjustable ground capacitor and simultaneously connected with a grounding transformer and secondary load resistance equipment; and setting stator grounding, rotor grounding and inter-turn faults of the phase modulator, and various types of faults inside and outside the phase modulator, the excitation transformer and the boosting transformer area at different frequency stages and different protection ranges in the whole operation process of the phase modulator of the test unit.
12. The large-scale phase modulation machine transformer bank protection test model test system of claim 7, wherein the simulation test system module comprises a phase modulation machine simulation module, a step-up transformer module, a simulation test high-voltage side system module, a grounding transformer module, a pulse rectification loop module and a pulse rectification and inversion loop module which are established by RTDS, and parameters of each module are set according to an actual engineering system;
the phase modulation machine simulation module established by the RTDS is used for inputting transient reactance, sub-transient reactance and resistance moment parameters of an actual large phase modulation machine set, establishing a mathematical model of mechanical moment of the phase modulation machine, and outputting a starting frequency boosting and boosting, idling synchronous grid connection and quick restarting process which are consistent with the actual large phase modulation machine set;
the pulse rectification loop module is used for building a six-pulse rectification loop model through a thyristor model of an RTDS component library, the six-pulse rectification loop model is matched with an actual excitation device trigger pulse to build a separate excitation loop and a main excitation loop, and the separate excitation loop and the main excitation loop are switched in the process of starting and connecting the phase modulator and the power system, and are consistent with an actual excitation system of the phase modulator in engineering;
the pulse rectification and inversion loop module is used for building a pulse rectification and inversion loop model through a thyristor model of an RTDS component library, the pulse rectification and inversion loop model is matched with an actual SFC device trigger pulse to form an SFC variable-frequency starting loop, and starting time, starting injection current and starting voltage transformation are the same as those of an engineering phase modulation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904842.2A CN110726889B (en) | 2019-09-24 | 2019-09-24 | Test method and system for test model of large phase modulation machine transformer bank protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904842.2A CN110726889B (en) | 2019-09-24 | 2019-09-24 | Test method and system for test model of large phase modulation machine transformer bank protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110726889A true CN110726889A (en) | 2020-01-24 |
| CN110726889B CN110726889B (en) | 2021-09-10 |
Family
ID=69219335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910904842.2A Active CN110726889B (en) | 2019-09-24 | 2019-09-24 | Test method and system for test model of large phase modulation machine transformer bank protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110726889B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462737A (en) * | 2020-11-18 | 2021-03-09 | 国网重庆市电力公司电力科学研究院 | Method for constructing security control device RTDS dynamic simulation test system, test method and system |
| CN113706094A (en) * | 2021-07-29 | 2021-11-26 | 国电南瑞科技股份有限公司 | Comprehensive energy real-time collaborative simulation system and method based on message bus |
| CN113945792A (en) * | 2021-10-29 | 2022-01-18 | 许继集团有限公司 | RTDS-based automatic restart test system and method for relay protection device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707796A (en) * | 2017-02-28 | 2017-05-24 | 北京西威清拓变流技术有限公司 | Hybrid simulation physical simulating device for flexible continuous current convertor |
| CN107481596A (en) * | 2017-07-17 | 2017-12-15 | 国网河北省电力公司培训中心 | A kind of power transformer Microcomputer Protection self-adapting simulation implementation method |
| CN107894542A (en) * | 2017-10-20 | 2018-04-10 | 国电南瑞科技股份有限公司 | The supporting secondary device test system of synchronous capacitor and method |
| CN208172533U (en) * | 2018-03-12 | 2018-11-30 | 许昌许继昌南通信设备有限公司 | Intelligent substation digital physical hybrid simulation system |
| CN109001553A (en) * | 2018-04-25 | 2018-12-14 | 中国电力科学研究院有限公司 | A kind of system and method detecting phase modifier transformer group protective device performance |
| CN109614700A (en) * | 2018-12-10 | 2019-04-12 | 国网山东省电力公司电力科学研究院 | A kind of energy internet analogue system based on numerical model analysis emulation technology |
| CN109765802A (en) * | 2019-01-18 | 2019-05-17 | 南京南瑞继保电气有限公司 | A kind of virtual DCS analogue system of large size phase modifier |
| CN109782732A (en) * | 2018-12-28 | 2019-05-21 | 上海电器科学研究所（集团）有限公司 | A kind of half circuit control device test platform in kind |
| CN110046461A (en) * | 2019-04-28 | 2019-07-23 | 哈尔滨理工大学 | Reactive compensation simulation method for field-path-network-control coupled synchronous phase modulator |
-
2019
- 2019-09-24 CN CN201910904842.2A patent/CN110726889B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707796A (en) * | 2017-02-28 | 2017-05-24 | 北京西威清拓变流技术有限公司 | Hybrid simulation physical simulating device for flexible continuous current convertor |
| CN107481596A (en) * | 2017-07-17 | 2017-12-15 | 国网河北省电力公司培训中心 | A kind of power transformer Microcomputer Protection self-adapting simulation implementation method |
| CN107894542A (en) * | 2017-10-20 | 2018-04-10 | 国电南瑞科技股份有限公司 | The supporting secondary device test system of synchronous capacitor and method |
| CN208172533U (en) * | 2018-03-12 | 2018-11-30 | 许昌许继昌南通信设备有限公司 | Intelligent substation digital physical hybrid simulation system |
| CN109001553A (en) * | 2018-04-25 | 2018-12-14 | 中国电力科学研究院有限公司 | A kind of system and method detecting phase modifier transformer group protective device performance |
| CN109614700A (en) * | 2018-12-10 | 2019-04-12 | 国网山东省电力公司电力科学研究院 | A kind of energy internet analogue system based on numerical model analysis emulation technology |
| CN109782732A (en) * | 2018-12-28 | 2019-05-21 | 上海电器科学研究所（集团）有限公司 | A kind of half circuit control device test platform in kind |
| CN109765802A (en) * | 2019-01-18 | 2019-05-17 | 南京南瑞继保电气有限公司 | A kind of virtual DCS analogue system of large size phase modifier |
| CN110046461A (en) * | 2019-04-28 | 2019-07-23 | 哈尔滨理工大学 | Reactive compensation simulation method for field-path-network-control coupled synchronous phase modulator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462737A (en) * | 2020-11-18 | 2021-03-09 | 国网重庆市电力公司电力科学研究院 | Method for constructing security control device RTDS dynamic simulation test system, test method and system |
| CN112462737B (en) * | 2020-11-18 | 2022-03-08 | 国网重庆市电力公司电力科学研究院 | Method for constructing security control device RTDS dynamic simulation test system, test method and system |
| CN113706094A (en) * | 2021-07-29 | 2021-11-26 | 国电南瑞科技股份有限公司 | Comprehensive energy real-time collaborative simulation system and method based on message bus |
| CN113706094B (en) * | 2021-07-29 | 2024-02-20 | 国电南瑞科技股份有限公司 | Comprehensive energy real-time collaborative simulation system and method based on message bus |
| CN113945792A (en) * | 2021-10-29 | 2022-01-18 | 许继集团有限公司 | RTDS-based automatic restart test system and method for relay protection device |
| CN113945792B (en) * | 2021-10-29 | 2024-05-07 | 河南源网荷储电气研究院有限公司 | Automatic restarting test system and method for relay protection device based on RTDS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110726889B (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110726889B (en) | Test method and system for test model of large phase modulation machine transformer bank protection system | |
| CN105846463B (en) | A kind of black-start method and system of multi-source coordination | |
| CN108429289B (en) | Control method and system based on virtual synchronous generator | |
| CN104215904B (en) | A kind of full power convertor low-voltage ride-through testing system of wind generating set and method | |
| CN104881317A (en) | Corresponding-period grid-connection simulation platform and simulation system of pumped power storage unit under different working conditions | |
| CN204667384U (en) | Simultaneous interconnecting emulation platform and analogue system under the different operating mode of pump-storage generator | |
| Chen et al. | Coordination control between excitation and hydraulic system during mode conversion of variable speed pumped storage unit | |
| CN112821391A (en) | Short-circuit current providing method and system of grid-connected converter | |
| CN104578150A (en) | Control method of doubly-fed wind power generator set | |
| CN104678302B (en) | The low-voltage ride-through testing system of wind generating set and method of a kind of Boost current transformers | |
| Wang et al. | Dynamic performance analysis of paralleled virtual synchronous generators under grid-connected and islanded mode | |
| CN105808810B (en) | Method for constructing direct-drive permanent magnet synchronous wind turbine generator model | |
| Gupta et al. | Experimental study of fault impact on grid connected DFIG driven wind Turbine | |
| Xu et al. | Analysis and improvement of damping factor based on virtual synchronous generator control | |
| Westman et al. | Energization of transformers in medium voltage island microgrids by leveraging grid forming inverter control | |
| CN107707175A (en) | A kind of dead electricity of electric drive compressor crosses over control system and method | |
| Yarahmadi et al. | Direct virtual torque control of DFIG grid connection using indirect matrix converter | |
| Sakamuri et al. | Coordinated fast primary frequency control from offshore wind power plants in MTDC system | |
| CN113675885A (en) | Transient power angle stability analysis method for grid-connected power system of direct-drive wind turbine generator | |
| CN109256795B (en) | Traversing control method and device | |
| Maina et al. | DFIG-based windfarm starting connected to a weak power grid | |
| Yang et al. | The behaviour of virtual synchronous machine (VSM) based converters in front of non-saturable faults | |
| González et al. | Real-Time Simulation of a High-Power Cycloconverter Drive | |
| Karaagac et al. | Modeling and simulation of the startup of a pumped storage power plant unit | |
| CN110854913B (en) | Simulation method of doubly-fed induction wind power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |