CN111273172A - Dynamic die test device and method for static variable frequency starting system of gas turbine generator - Google Patents
Dynamic die test device and method for static variable frequency starting system of gas turbine generator Download PDFInfo
- Publication number
- CN111273172A CN111273172A CN202010205847.9A CN202010205847A CN111273172A CN 111273172 A CN111273172 A CN 111273172A CN 202010205847 A CN202010205847 A CN 202010205847A CN 111273172 A CN111273172 A CN 111273172A
- Authority
- CN
- China
- Prior art keywords
- switch
- excitation
- gas turbine
- variable frequency
- static variable
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 106
- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims abstract description 111
- 230000005284 excitation Effects 0.000 claims abstract description 99
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000005094 computer simulation Methods 0.000 claims description 17
- 230000007935 neutral effect Effects 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 14
- 238000009499 grossing Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 64
- 238000010586 diagram Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000012549 training Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000555745 Sciuridae Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a dynamic die test device and a test method for a static frequency conversion starting system of a gas turbine generator, wherein the device comprises a synchronous motor-generator set, a static frequency conversion starting system, a voltage source type frequency converter system, a synchronous generator excitation system, an automatic quasi-synchronization device and a load resistance box, wherein the input end of the synchronous motor-generator set is connected with the output end of the voltage source type frequency converter system, the output ends of the synchronous motor-generator set, the static frequency conversion starting system, the synchronous generator excitation system and the automatic quasi-synchronization device are all connected with the load resistance box, and the input ends of the static frequency conversion starting system, the voltage source type frequency converter system, the synchronous generator excitation system and the automatic quasi-synchronization device are all connected with an alternating current power supply; the invention has the advantages that: the problem that a static variable frequency starting dynamic die test device and method for a gas turbine generator are lacked in the prior art is solved, and the dynamic die test device is used for testing and simulating.
Description
Technical Field
The invention relates to the technical field of control of gas turbine generator sets, in particular to a dynamic die test device and a dynamic die test method for a static variable frequency starting system of a gas turbine generator.
Background
At present, the development and the utilization of natural gas are the necessary way to move towards ecological civilization, and gas turbine power generation is an important component of clean energy power generation technology, and has important significance for actively promoting the national energy revolution.
However, many problems are faced in the aspect of the static variable frequency starting equipment of the gas turbine generator set, for example, most of the static variable frequency starting system of the gas turbine generator set is imported equipment, the operation and maintenance process is excessively dependent on equipment manufacturers, the operation and maintenance cost is too high, the imported equipment is blocked due to technology, the cost for replacing spare parts is high, the period is long, the difficulty of domestic transformation is high, and a movable mold test device is lacked for carrying out compatibility test on the imported equipment. In addition, the static variable frequency starting system of the gas turbine generator is in operation, and the dynamic simulation test device is lacked for testing and simulating the abnormal conditions and faults. Simultaneously, the static variable frequency starting equipment operation and maintenance personnel of gas turbine power plant lack the movable mould test device and carry out the technique training, run into the equipment problem and dare not to do the manual real behaviour.
Chinese patent publication No. CN104091501A discloses an energy conversion dynamic simulation test bench based on a permanent magnet wind power generator, which mainly comprises a wind measuring tower, a PC, a PLC control cabinet, a squirrel cage asynchronous motor, a permanent magnet synchronous generator, a grid-connected switch cabinet and a feed cabinet; the squirrel-cage asynchronous motor is connected with the permanent magnet synchronous generator, the squirrel-cage asynchronous motor is connected to a grid-connected switch cabinet through a full-power converter, the permanent magnet synchronous generator is connected to another grid-connected switch cabinet through another full-power converter, the two grid-connected switch cabinets are connected to a feed cabinet together, and the feed cabinet is connected to a power grid through a distribution transformer; the anemometer tower is connected with a PC (personal computer), the PC is connected with a PLC (programmable logic controller) cabinet, and the PLC cabinet is connected to the two full-power converters. The invention provides a method for enabling experimenters to more deeply understand the relevant principle of wind power generation and the relevant control technology so as to further research. Although the invention belongs to a moving die experiment table and an experiment method, the invention can not be applied to the static variable frequency starting moving die experiment of the gas turbine generator, and in conclusion, the prior art is lack of a static variable frequency starting moving die experiment device and a static variable frequency starting moving die experiment method of the gas turbine generator.
Disclosure of Invention
The invention aims to solve the technical problem of providing a dynamic die test device and a test method for a static variable frequency starting system of a gas turbine generator, and the dynamic die test device is used for carrying out starting test and simulation on the gas turbine generator.
The invention solves the technical problems through the following technical means: the dynamic die test device for the static frequency conversion starting system of the gas turbine generator comprises a synchronous motor-generator set, a static frequency conversion starting system, a voltage source type frequency converter system, a synchronous generator excitation system, an automatic quasi-synchronization device and a load resistance box, wherein the input end of the synchronous motor-generator set is connected with the output end of the voltage source type frequency converter system, the output ends of the synchronous motor-generator set, the static frequency conversion starting system, the synchronous generator excitation system and the automatic quasi-synchronization device are all connected with the load resistance box, and the input ends of the static frequency conversion starting system, the voltage source type frequency converter system, the synchronous generator excitation system and the automatic quasi-synchronization device are all connected with an alternating current power supply;
the synchronous motor-generator set is coaxially mounted with a synchronous generator, and the synchronous motor simulates a gas turbine generator to drag the synchronous generator; the static variable frequency starting system is used for dragging the synchronous motor-generator set from a static state to a self-sustaining rotating speed so as to realize turning, blowing or cleaning; the voltage source type frequency converter system is used for driving the synchronous motor and adjusting the rotating speed; the synchronous generator excitation system is used for providing an excitation current in the starting process of the synchronous motor; the automatic quasi-synchronization device is used for detecting whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator meet the conditions or not, and realizing grid-connected control; and the load resistance box is used for simulating the power grid load under the actual working condition.
The invention provides a dynamic die test device and a dynamic die test method for a static variable frequency starting system of a gas turbine generator, which integrate the functions of the static variable frequency starting system, a synchronous generator excitation system, generator-transformer group protection and frequency converter speed regulation into a whole, solve the problem that the dynamic die test device and the method for the static variable frequency starting system of the gas turbine generator are lacked in the prior art, and can be used for testing and simulating the abnormity and the faults of the static variable frequency starting system of the gas turbine generator in the operation. Simultaneously, the static variable frequency starting equipment operation and maintenance personnel of gas turbine power plant still can carry out technical training through this movable mould test device, run into the equipment problem and carry out analog operation through this movable mould test device, help later stage manual real practice.
Furthermore, the synchronous motor-generator set comprises a synchronous motor, a synchronous generator and a flywheel sheet which are coaxially connected, wherein the input end of the synchronous motor is connected with the output end of the voltage source type frequency converter system, and the output end of the synchronous generator is connected with the load resistance box.
Furthermore, the voltage source type frequency converter system comprises an input transformer, a converter, an input switch and an output switch, wherein one end of the input switch is connected with an alternating current power supply, the other end of the input switch is connected with one end of the output switch through the input transformer and the converter, and the other end of the output switch is connected with the input end of the synchronous motor.
Furthermore, the excitation system of the synchronous generator comprises an excitation regulator, a magnetic excitation loop and a self-shunt excitation loop, wherein the magnetic excitation loop comprises a direct-current power supply and a resistor, the self-shunt excitation loop comprises an excitation transformer and an excitation rectifying module, the input end of the excitation transformer is connected with an alternating-current power supply through a switch S1 and a switch S2 in sequence, the output end of the excitation transformer is connected with a neutral point of the excitation rectifying module, the input end of the excitation rectifying module is connected with a second terminal of the excitation regulator, the input end of the excitation transformer is connected with the output end of the synchronous generator through a switch S3, the negative end of the direct-current power supply is connected with one end of the resistor through a switch S4, the other end of the resistor is connected with a first terminal of the excitation regulator through a switch S5 and a switch S6 in sequence, the output end of the excitation rectifying module is connected to a, the positive end of the direct-current power supply is connected with the second terminal of the excitation regulator through a switch S7, and the third terminal of the excitation regulator and the fourth terminal of the excitation regulator are respectively connected with two ends of the rotor of the synchronous generator.
Furthermore, the direct current power supply is 110V direct current power supply with the capacity of 1 kVA.
Further, the static variable frequency starting system comprises a switch S8, an input isolation transformer, a pulse wave rectification inversion module and a switch S9, one end of the switch S8 is connected with an alternating current power supply, the other end of the switch S8 is connected with the input end of the input isolation transformer, two output ends of the input isolation transformer are respectively connected with two input ends of the pulse wave rectification inversion module, the output end of the pulse wave rectification inversion module is connected with one end of the switch S9, and the other end of the switch S9 is connected with a load resistance box.
Furthermore, the pulse wave rectification inverter module is a 12-6 pulse wave rectification inverter module, and comprises a rectifier bridge Q1, a rectifier bridge Q2, an inverter bridge H2 and a smoothing reactor L1, wherein the rectifier bridge Q1 is connected with the rectifier bridge Q2, the output end of the rectifier bridge Q2 is connected with one end of the smoothing reactor L1, the other end of the smoothing reactor L1 is connected with the input end of the inverter bridge H2, the output end of the inverter bridge H2 is connected with the input end of the rectifier bridge Q1, one output end of the input isolation transformer is connected with the neutral point of the rectifier bridge Q1, the other output end of the input isolation transformer is connected with the neutral point of the rectifier bridge Q2, and the neutral point of the inverter bridge H2 is connected with one end of the switch S9.
Further, the automatic quasi-synchronization device comprises an air switch, a first voltage transformer, a switch S10, a switch S11 and a second voltage transformer, one end of the air switch is connected with an alternating current power supply, the other end of the air switch is connected with a load resistance box sequentially through a switch S10 and a switch S11, the first voltage transformer is connected to a connecting line of the air switch and the switch S10, and the second voltage transformer is connected to a connecting line of the switch S10 and the switch S11.
Further, the alternating current power supply is a 380V three-phase alternating current power supply.
The invention also provides a static variable frequency starting dynamic model test method for the gas turbine generator, which comprises the following steps:
the method comprises the following steps: self-checking before running of a synchronous generator excitation system and a static variable frequency starting system;
step two: selecting a starting mode of the gas turbine generator set, wherein when the gas turbine generator set is started by using a static frequency conversion starting system, a corresponding voltage source type frequency converter system works in a first mode, and when the gas turbine generator set is started by using a synchronous motor, the voltage source type frequency converter system works in a second mode; the gas turbine generator set is a synchronous generator;
step three: after a static variable frequency starting system is selected to start the gas turbine generator set, an excitation system of the synchronous generator and the static variable frequency starting system are ready;
step four: the static variable frequency starting system selects a starting mode, and is started directly, purged or washed;
step five: after the start mode of the static variable frequency start system is selected, the static variable frequency start system starts to operate;
step six: after the static variable frequency starting system operates, a signal is sent to a synchronous generator excitation system, and the synchronous generator excitation system is put into use;
step seven: the static variable frequency starting system drags the gas turbine generator set to a rated rotating speed, or the voltage source type frequency converter system drags the gas turbine generator set to the rated rotating speed;
step eight: and the automatic quasi-synchronization device is put into operation, detects whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator set meet the conditions or not, and sends out a grid-connected control signal.
The invention has the advantages that:
(1) the invention provides a dynamic simulation test device and a test method for a static variable frequency starting system of a gas turbine generator, which integrate the functions of the static variable frequency starting system, a synchronous generator excitation system, generator-transformer group protection and frequency converter speed regulation into a whole, solve the problem that the static variable frequency starting dynamic simulation test device and method for the gas turbine generator in the prior art are lacked, and can be used for testing and simulating the abnormity and faults of the static variable frequency starting system of the gas turbine generator in the operation. Simultaneously, the static variable frequency starting equipment operation and maintenance personnel of gas turbine power plant still can carry out technical training through this movable mould test device, run into the equipment problem and carry out analog operation through this movable mould test device, help later stage manual real practice.
(2) The dynamic simulation test device for the static variable frequency starting system of the gas turbine generator can be used for network access detection of the static variable frequency starting system of the gas turbine generator, network access detection of a synchronous generator excitation system and network access detection of a voltage source type frequency converter system, dynamic simulation of high/low voltage ride through of a frequency converter and energy-saving evaluation of the frequency converter.
Drawings
FIG. 1 is a primary system topology schematic diagram of a gas turbine generator static variable frequency starting system dynamic model test device provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a pulse wave rectification inversion module in a dynamic simulation test device of a static variable frequency starting system of a gas turbine generator according to an embodiment of the present invention;
FIG. 3 is a diagram of a secondary system cabinet of a dynamic simulation test apparatus of a static variable frequency starting system of a gas turbine generator according to an embodiment of the present invention;
fig. 4 is a flowchart of a dynamic simulation testing method of a stationary variable frequency starting system of a gas turbine generator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the primary system topology diagram of the static frequency conversion starting dynamic simulation test device of the gas turbine generator, fig. 3 is a secondary system screen cabinet diagram of the static frequency conversion starting dynamic simulation test device of the gas turbine generator, and the dynamic simulation test device of the static frequency conversion starting system of the gas turbine generator comprises a synchronous motor-generator set 1, a static frequency conversion starting system 2, a voltage source type frequency converter system 3, a synchronous generator excitation system 4, an automatic quasi-synchronization device 5 and a load resistance box 6, wherein an input end of the synchronous motor-generator set 1 is connected with an output end of the voltage source type frequency converter system 3, output ends of the synchronous motor-generator set 1, the static frequency conversion starting system 2, the synchronous generator excitation system 4 and the automatic quasi-synchronization device 5 are connected with the load resistance box 6 through switches S12, and the static frequency conversion starting system 2, the static, The input ends of the voltage source type frequency converter system 3, the synchronous generator excitation system 4 and the automatic quasi-synchronization device 5 are all connected with an alternating current power supply AC, and the alternating current power supply AC is a 380V three-phase alternating current power supply.
The synchronous motor-generator set 1 is characterized in that a synchronous motor M and a synchronous generator G are coaxially arranged, and the synchronous motor M simulates a gas turbine generator to drag the synchronous generator G; the static variable frequency starting system 2 is used for dragging the synchronous motor-generator set 1 from a static state to a self-sustaining rotating speed to realize turning, blowing or cleaning; the voltage source type frequency converter system 3 is used for driving the synchronous motor M and adjusting the rotating speed; the synchronous generator excitation system 4 is used for providing an excitation current in the starting process of the synchronous motor M; the automatic quasi-synchronization device 5 is used for detecting whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator (namely, a synchronous motor M) meet the conditions or not, and realizing grid-connected control; and the load resistance box 6 is used for simulating the power grid load under the actual working condition.
With continued reference to fig. 1, the synchronous motor-generator set 1 includes a synchronous motor M, a synchronous generator G, and a flywheel blade 101, which are coaxially connected, wherein an input end of the synchronous motor M is connected to an output end of the voltage source type frequency converter system 3, and an output end of the synchronous generator G is connected to the load resistor box 6. The synchronous motor M of the invention adopts an alternating-current 400V, 50Hz and 45kW permanent magnet synchronous motor with the rated rotation speed of 1500 rpm; the synchronous generator G adopts a 400V, 50Hz and 75kW electric excitation convex-synchronous generator, is provided with a generator outlet current transformer and a neutral point current transformer at a rated rotation speed of 1500rpm, is provided with a generator outlet voltage transformer and is provided with an accurate angular position sensor and a rotation speed sensor. The rotational inertia of the 75kW generator is small, the direct dragging speed is fast, learning and research in the moving die test process are not facilitated, the static flywheel sheet 101 is coaxially matched with the synchronous motor-generator set 1, the rotational inertia of the whole gas turbine generator set can be adjusted by adjusting the number of the flywheel sheets 101, the accelerated dragging performance of a static variable frequency starting system and the reasonability of control logic are tested, meanwhile, the characteristic of the same static variable frequency starting system 2 when the same static variable frequency starting system 2 drags gas turbine generator sets with different rotational inertia can be researched, and the universality of the static variable frequency starting system 2 dragging a plurality of gas turbine generator sets is verified.
The static variable frequency starting system 2 comprises a switch S8, an input isolation transformer T3, a pulse wave rectification inverter module and a switch S9, wherein one end of the switch S8 is connected with an alternating current power supply AC, the other end of the switch S8 is connected with the input end of the input isolation transformer T3, the pulse wave rectification inverter module is a 12-6 pulse wave rectification inverter module and comprises a rectifier bridge Q1, a rectifier bridge Q2, an inverter bridge H2 and a smoothing reactor L1, the rectifier bridge Q1 is connected with the rectifier bridge Q2, the output end of the rectifier bridge Q2 is connected with one end of the smoothing reactor L1, the other end of the smoothing reactor L1 is connected with the input end of an inverter bridge H2, the output end of the inverter bridge H2 is connected with the input end of the rectifier bridge Q1, one output end of the input isolation transformer is connected with a neutral point of the rectifier bridge Q1, the other output end of the input isolation transformer is connected with a neutral point of the rectifier bridge, the neutral point of the inverter bridge H2 is connected to one end of the switch S9, and the other end of the switch S9 is connected to the load resistor box 6. Fig. 1 of the present invention only shows a schematic connection relationship diagram of a rectifier bridge Q1, a rectifier bridge Q2, an inverter bridge H2, and a smoothing reactor L1, where the rectifier bridge Q1 and the rectifier bridge Q2 are both three-phase rectifier bridges, the inverter bridge H2 is a three-phase inverter bridge, a detailed schematic diagram is shown in fig. 2, the rectifier bridge and the inverter bridge belong to the conventional technology, the detailed connection relationship is referred to fig. 2, and no description is given herein for connection relationship, an input end refers to a current inlet direction of the rectifier bridge, an output end refers to a current outlet direction of the rectifier bridge, a neutral point refers to a connection between an upper bridge arm and a lower bridge arm of the rectifier bridge or the inverter bridge, an input end of the rectifier bridge Q2 in fig. 1 is an end connected to an inductor L1, an input end is an end connected to the inverter bridge H2, and input and output ends and neutral points of the rectifier bridge Q1, the rectifier bridge H4 and the inverter bridge H63. The static variable frequency starting system 2 provided by the embodiment of the invention adopts a main loop 12-6 pulse wave rectification inversion module, the capacity is 5kVA, the rated voltage is 400V, the rated current DC is 20A, and the smoothing reactor L1 adopts an adjustable reactor, and is continuously adjustable within the range of 1-65 mH. The power supply of the static variable frequency starting system 2 is a three-phase alternating current power supply with the voltage of 380V and the capacity of 3 kVA.
The voltage source type frequency converter system 3 comprises an input transformer T1, a converter U1, an input switch K1 and an output switch K2, wherein one end of the input switch K1 is connected with an alternating current power supply AC, the other end of the input switch K1 is connected with one end of the output switch K2 through an input transformer T1 and a converter U1, and the other end of the output switch K2 is connected with an input end of a synchronous motor M. The converter U1 is composed of an AC/DC rectifying unit, a DC/AC inverting unit and a filter capacitor. The converter belongs to the conventional technology, and the connection relationship thereof is not described in detail. The voltage source type frequency converter system 3 of the embodiment of the invention has the rated power of 45kW, the rated input voltage of 400V, the rated input frequency of 50Hz, the rated output voltage of 0-400V and the rated output frequency of 0-52.5 Hz. The voltage source type frequency converter system 3 has two working modes, namely a combustion engine starting mode, and carries out torque output according to a rotating speed-torque curve preset in the frequency converter; and in the motor starting mode, the frequency converter drags the gas turbine generator set to a rated rotating speed, and the rotating speed is adjusted on line according to the speed increasing and decreasing instruction of the synchronous device. The power supply of the voltage source type frequency converter system 3 is a three-phase alternating current power supply with the voltage of 380V and the capacity of 50 kVA.
The synchronous generator excitation system 4 comprises an excitation regulator AVR, a magnetizing loop and a self-shunt excitation loop, wherein the magnetizing loop comprises a direct current power supply DC and a resistor R, and the direct current power supply DC is a direct current power supply with the voltage of 110V and the capacity of 1 kVA. The self-shunt excitation loop comprises an excitation transformer T2 and an excitation rectifying module H4, wherein the excitation rectifying module H4 is a three-phase rectifier bridge, the input end of an excitation transformer T2 is connected with an alternating current power supply AC through a switch S1 and a switch S2 in sequence, the output end of the excitation transformer T2 is connected with a neutral point of an excitation rectifying module H4, the input end of an excitation rectifying module H4 is connected with a second terminal of an excitation regulator AVR, the input end of an excitation transformer T2 is connected with the output end of a synchronous generator G through a switch S3, the negative terminal of a direct current power supply DC is connected with one end of a resistor R through a switch S4, the other end of the resistor R is connected with a first terminal of the excitation regulator AVR through a switch S5 and a switch S6 in sequence, the output end of the excitation rectifying module H4 is connected with the connection line of the switch S5 and the switch S6, and the positive terminal of the direct current power supply DC is connected with the second terminal of, the third terminal of the excitation regulator AVR and the fourth terminal of the excitation regulator AVR are respectively connected with two ends of a rotor of the synchronous generator G, and the rotor of the synchronous generator G is an inductance mark right below the synchronous generator G shown in fig. 1. In the embodiment of the invention, the main loop of the excitation system 4 of the synchronous generator adopts a self-shunt excitation mode, and has a rated load excitation voltage of 83V, a rated load excitation current of 1.8A, a rated no-load excitation voltage of 66.4V and a rated no-load excitation current of 1.45A. The AC excitation power supply is a three-phase AC power supply with voltage of 380V and capacity of 5kVA, and the DC excitation power supply is a DC power supply with voltage of 110V and capacity of 1 kVA.
The automatic quasi-synchronization device 5 comprises an air switch K3, a first voltage transformer PT1, a switch S10, a switch S11 and a second voltage transformer PT2, one end of the air switch K3 is connected with an alternating current power supply AC, the other end of the air switch K3 is connected with a load resistance box 6 sequentially through the switch S10 and the switch S11, the first voltage transformer PT1 is connected to a connecting line of the air switch K3 and the switch S10, and the second voltage transformer PT2 is connected to a connecting line of the switch S10 and the switch S11. The power supply connected with the automatic quasi-synchronization device 5 is a three-phase alternating current power supply with the voltage of 380V and the capacity of 50 kVA.
As shown in fig. 4, the invention further provides a static variable frequency starting dynamic model test method for a gas turbine generator, which comprises the following steps:
step S1: self-checking before running of a synchronous generator excitation system 4 (excitation for short in figure 4) and a static variable frequency starting system 2 (SFC for short in figure 3);
step S2: selecting a starting mode of a gas turbine generator set (which is called as a gas turbine for short in figure 4), wherein when the static frequency conversion starting system 2 is used for starting the gas turbine generator set, a corresponding voltage source type frequency converter system 3 works in a first mode, the voltage source type frequency converter system 3 performs torque output according to an internal preset rotating speed-torque curve, simulates the torque output of the gas turbine, and drags the gas turbine generator set together with the static frequency conversion starting system 2; when the synchronous motor M is utilized to start the gas turbine generator set, the voltage source type frequency converter system 3 works in a mode II, the voltage source type frequency converter system 3 drags the gas turbine generator set to a rated rotating speed, and the rotating speed is adjusted on line according to the speed increasing and decreasing instruction of the automatic quasi-synchronization device 5; the gas turbine generator set is a synchronous generator G;
step S3: after the static variable frequency starting system 2 is selected to start the gas turbine generator set, the synchronous generator excitation system 4 and the static variable frequency starting system 2 are ready;
step S4: the static variable frequency starting system 2 selects a starting mode, and directly starts, sweeps or washes;
step S5: after the start mode of the static variable frequency start system 2 is selected, the static variable frequency start system 2 starts to operate;
step S6: after the static variable frequency starting system 2 operates, a signal is sent to the synchronous generator excitation system 4, and the synchronous generator excitation system 4 is put into operation;
step S7: the static variable frequency starting system 2 drags the gas turbine generator set to a rated rotating speed, or the voltage source type frequency converter system 3 drags the gas turbine generator set to the rated rotating speed;
step S8: and the automatic quasi-synchronization device 5 is put into operation, detects whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator set meet the conditions or not, and sends out a grid-connected control signal.
The invention provides a dynamic simulation test device and a test method for a static variable frequency starting system of a gas turbine generator, which integrate the functions of the static variable frequency starting system, a synchronous generator excitation system, generator-transformer group protection and frequency converter speed regulation into a whole, solve the problem that the static variable frequency starting dynamic simulation test device and method for the gas turbine generator in the prior art are lacked, and can be used for testing and simulating the abnormity and faults of the static variable frequency starting system of the gas turbine generator in the operation. Simultaneously, the static variable frequency starting equipment operation and maintenance personnel of gas turbine power plant still can carry out technical training through this movable mould test device, run into the equipment problem and carry out analog operation through this movable mould test device, help later stage manual real practice.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The dynamic die test device for the static variable frequency starting system of the gas turbine generator is characterized by comprising a synchronous motor-generator set, a static variable frequency starting system, a voltage source type frequency converter system, a synchronous generator excitation system, an automatic quasi-synchronization device and a load resistance box, wherein the input end of the synchronous motor-generator set is connected with the output end of the voltage source type frequency converter system, the output ends of the synchronous motor-generator set, the static variable frequency starting system, the synchronous generator excitation system and the automatic quasi-synchronization device are connected with the load resistance box, and the input ends of the static variable frequency starting system, the voltage source type frequency converter system, the synchronous generator excitation system and the automatic quasi-synchronization device are connected with an alternating current power supply;
the synchronous motor-generator set is coaxially installed by a synchronous motor and a synchronous generator, and the synchronous motor simulates a gas turbine to drag the synchronous generator; the static variable frequency starting system is used for dragging the synchronous motor-generator set from a static state to a self-sustaining rotating speed so as to realize turning, blowing or cleaning; the voltage source type frequency converter system is used for driving the synchronous motor and adjusting the rotating speed; the synchronous generator excitation system is used for providing an excitation current in the starting process of the synchronous motor; the automatic quasi-synchronization device is used for detecting whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator meet the conditions or not, and realizing grid-connected control; and the load resistance box is used for simulating the power grid load under the actual working condition.
2. The gas turbine generator static variable frequency starting system dynamic die testing device as claimed in claim 1, wherein the synchronous motor-generator set comprises a synchronous motor, a synchronous generator and a flywheel sheet which are coaxially connected, an input end of the synchronous motor is connected with an output end of a voltage source type frequency converter system, and an output end of the synchronous generator is connected with a load resistance box.
3. The dynamic simulation test apparatus for the static variable frequency starting system of a gas turbine generator as claimed in claim 2, wherein the voltage source type inverter system comprises an input transformer, a converter, an input switch and an output switch, one end of the input switch is connected to the ac power source, the other end of the input switch is connected to one end of the output switch through the input transformer and the converter, and the other end of the output switch is connected to the input end of the synchronous motor.
4. The gas turbine generator static variable frequency starting system dynamic die testing device as claimed in claim 2, wherein the synchronous generator excitation system comprises an excitation regulator, a magnetic excitation loop and a self-shunt excitation loop, the magnetic excitation loop comprises a direct current power supply and a resistor, the self-shunt excitation loop comprises an excitation transformer and an excitation rectifier module, the input end of the excitation transformer is connected with an alternating current power supply through a switch S1 and a switch S2 in sequence, the output end of the excitation transformer is connected with a neutral point of the excitation rectifier module, the input end of the excitation rectifier module is connected with a second terminal of the excitation regulator, the input end of the excitation transformer is connected with the output end of the synchronous generator through a switch S3, the negative terminal of the direct current power supply is connected with one end of the resistor through a switch S4, and the other end of the resistor is connected with a first terminal of the excitation regulator through a switch S5 and a switch S36, the output end of the excitation rectifier module is connected to the connection line of the switch S5 and the switch S6, the positive end of the direct-current power supply is connected with the second terminal of the excitation regulator through the switch S7, and the third terminal of the excitation regulator and the fourth terminal of the excitation regulator are respectively connected with two ends of the rotor of the synchronous generator.
5. The dynamic simulation test device of the static variable frequency starting system of the gas turbine generator as claimed in claim 4, wherein the DC power supply is a DC power supply with 110V voltage and 1kVA capacity.
6. The dynamic simulation test device of the static variable-frequency starting system of the gas turbine generator as claimed in claim 1, wherein the static variable-frequency starting system comprises a switch S8, an input isolation transformer, a pulse wave rectification inverter module and a switch S9, one end of the switch S8 is connected to an ac power supply, the other end of the switch S8 is connected to an input end of the input isolation transformer, two output ends of the input isolation transformer are respectively connected to two input ends of the pulse wave rectification inverter module, an output end of the pulse wave rectification inverter module is connected to one end of the switch S9, and the other end of the switch S9 is connected to a load resistor box.
7. The gas turbine generator static frequency conversion starting system moving die test device as claimed in claim 6, wherein the pulse wave rectification inversion module is a 12-6 pulse wave rectification inversion module, and comprises a rectifier bridge Q1, a rectifier bridge Q2, an inverter bridge H2 and a smoothing reactor L1, the rectifier bridge Q1 is connected with the rectifier bridge Q2, the output end of the rectifier bridge Q2 is connected with one end of the smoothing reactor L1, the other end of the smoothing reactor L1 is connected with the input end of an inverter bridge H2, the output end of the inverter bridge H2 is connected with the input end of the rectifier bridge Q1, one output end of the input isolation transformer is connected with the neutral point of the rectifier bridge Q1, the other output end of the input isolation transformer is connected with the neutral point of the rectifier bridge Q2, and the neutral point of the inverter bridge H2 is connected with one end of a switch S9.
8. The gas turbine generator static variable frequency starting system moving die test device as claimed in claim 1, wherein the automatic quasi-synchronization device comprises an air switch, a first voltage transformer, a switch S10, a switch S11 and a second voltage transformer, one end of the air switch is connected with an alternating current power supply, the other end of the air switch is connected with a load resistance box through a switch S10 and a switch S11 in sequence, the first voltage transformer is connected to a connecting line of the air switch and the switch S10, and the second voltage transformer is connected to a connecting line of the switch S10 and the switch S11.
9. The gas turbine generator static variable frequency starting system moving die testing device as claimed in claim 1, wherein said ac power supply is a 380V three-phase ac power supply.
10. The testing method of the gas turbine generator static variable frequency starting system dynamic model testing device according to the claims 1-9, characterized in that the method comprises:
the method comprises the following steps: self-checking before running of a synchronous generator excitation system and a static variable frequency starting system;
step two: selecting a starting mode of the gas turbine generator set, wherein when the gas turbine generator set is started by using a static frequency conversion starting system, a corresponding voltage source type frequency converter system works in a first mode, and when the gas turbine generator set is started by using a synchronous motor, the voltage source type frequency converter system works in a second mode; the gas turbine generator set is a synchronous generator;
step three: after a static variable frequency starting system is selected to start the gas turbine generator set, an excitation system of the synchronous generator and the static variable frequency starting system are ready;
step four: the static variable frequency starting system selects a starting mode, and is started directly, purged or washed;
step five: after the start mode of the static variable frequency start system is selected, the static variable frequency start system starts to operate;
step six: after the static variable frequency starting system operates, a signal is sent to a synchronous generator excitation system, and the synchronous generator excitation system is put into use;
step seven: the static variable frequency starting system drags the gas turbine generator set to a rated rotating speed, or the voltage source type frequency converter system drags the gas turbine generator set to the rated rotating speed;
step eight: and the automatic quasi-synchronization device is put into operation, detects whether the frequency, amplitude and phase of the output voltage of the power grid and the gas turbine generator set meet the conditions or not, and sends out a grid-connected control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205847.9A CN111273172A (en) | 2020-03-23 | 2020-03-23 | Dynamic die test device and method for static variable frequency starting system of gas turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205847.9A CN111273172A (en) | 2020-03-23 | 2020-03-23 | Dynamic die test device and method for static variable frequency starting system of gas turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111273172A true CN111273172A (en) | 2020-06-12 |
Family
ID=70998414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010205847.9A Pending CN111273172A (en) | 2020-03-23 | 2020-03-23 | Dynamic die test device and method for static variable frequency starting system of gas turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111273172A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112130010A (en) * | 2020-08-14 | 2020-12-25 | 许继电气股份有限公司 | Static frequency converter SFC performance detection system under heavy current working condition |
| CN113178118A (en) * | 2021-04-26 | 2021-07-27 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN114151202A (en) * | 2021-10-28 | 2022-03-08 | 中山嘉明电力有限公司 | Static variable frequency starting system and control method thereof |
-
2020
- 2020-03-23 CN CN202010205847.9A patent/CN111273172A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112130010A (en) * | 2020-08-14 | 2020-12-25 | 许继电气股份有限公司 | Static frequency converter SFC performance detection system under heavy current working condition |
| CN113178118A (en) * | 2021-04-26 | 2021-07-27 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN113178118B (en) * | 2021-04-26 | 2023-02-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN114151202A (en) * | 2021-10-28 | 2022-03-08 | 中山嘉明电力有限公司 | Static variable frequency starting system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111273172A (en) | Dynamic die test device and method for static variable frequency starting system of gas turbine generator | |
| CN109921421B (en) | Method for establishing harmonic current output model of doubly-fed wind turbine generator | |
| CN211905608U (en) | Dynamic die test device for static variable frequency starting system of gas turbine generator | |
| CN103094921A (en) | Electromechanical transient modeling method and electromechanical transient model of direct-drive-type wind turbine generator system | |
| CN106199428B (en) | High-voltage high-power double-fed wind driven generator test system and measurement and control system thereof | |
| CN108196187A (en) | Double-fed wind power generator rotor winding three-phase asymmetric load method for diagnosing faults | |
| CN103257316B (en) | A kind of Multifunctional test system of wind turbine generator system | |
| CN103943009A (en) | Simulated wind power generation grid connection experimental system | |
| CN202837502U (en) | System for simulating torque characteristics of wind power generator set | |
| CN102982713A (en) | Dynamic simulation system for low-voltage permanent magnetic direct-drive wind generating set and synchronization | |
| CN109800455A (en) | A kind of idle characteristic Simulation method and apparatus of double-fed fan motor unit transient state | |
| CN115492724A (en) | Voltage source wind turbine generator operation performance online test system and automatic test method | |
| CN109062077B (en) | Pumped storage variable speed unit power generation and electric test system and control method thereof | |
| CN201892734U (en) | Experimental apparatus simulating power grid voltage unbalance | |
| CN105869507A (en) | Megawatt-grade hydroelectric generation simulation system | |
| CN102841314A (en) | Temperature rise test method and system for electrically excited synchronous motors | |
| CN103021241A (en) | Dynamic simulation system of low voltage electric power system | |
| CN104678302A (en) | Low voltage ride-through test system and method for wind turbine generator of Boost current transformer | |
| CN101814745A (en) | Wind power generation simulation system based on brushless synchronous generator | |
| CN103487753B (en) | A kind of method of testing wind power generation unit dynamic property and testing table | |
| CN201707414U (en) | Transducer simulation tester of wind driven generator | |
| CN100389252C (en) | Start control device and method for micro gas turbine high speed engine | |
| CN202433446U (en) | Function test platform for 1.5MW doubly-fed wind power converter | |
| CN107359645B (en) | Zero-transition-process dynamic grid-connected system of permanent-magnet direct-drive fan | |
| CN105552951A (en) | DFIG system control method based on repetition sliding mode |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 236000 No. 669 Mingzhu Avenue, Baiyan Science Park, high tech Zone, Hefei, Anhui Province Applicant after: China Datang Corporation Science and Technology General Research Institute Ltd. Applicant after: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. Address before: 236000 Innovation Avenue 666, Hefei Hi-tech Zone, Anhui Province, as Intelligent Building Applicant before: CHINA DATANG GROUP SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. EAST CHINA ELECTRIC POWER TEST INSTITUTE Applicant before: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tian Longgang Inventor after: Zhong Lei Inventor after: Wang Rui Inventor after: Li Fei Inventor after: Wang Ping Inventor after: Wang Xing Inventor after: Zhang Shuming Inventor after: Zhao Yuan Inventor before: Tian Longgang Inventor before: Wang Rui Inventor before: Li Fei Inventor before: Wang Ping Inventor before: Wang Xing Inventor before: Zhang Shuming Inventor before: Zhao Yuan |