CN105676019A - RTDS-based double-bus protection dynamic simulation experimental method - Google Patents
RTDS-based double-bus protection dynamic simulation experimental method Download PDFInfo
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- G—PHYSICS
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- 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
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- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
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Abstract
The invention belongs to the technical field of electrical power system automation, in particular to an RTDS-based double-bus protection dynamic simulation experimental method. The RTDS-based double-bus protection dynamic simulation experimental method comprises the steps of: connecting a hardware board card in an RTDS machine cabinet (RACK) with peripherals required in experiment; connecting a synchronization line of a GTWIF on the RACK to a HUB; generating a configuration file config_file by reading a hardware configuration file via RSCAD, carrying out double-bus protection primary system modeling, secondary simulation quantity output modeling and switching value closed-loop control logic modeling, allocating resources according to the configuration file, compiling models to generate a drft file after modeling and downloading the drft file into the RTDS hardware board card; and carrying out dynamic simulation experimental system configuration, generating a configuration file and running the configuration file in a Runtime menu in the RSCAD software in real time, simulating various types of faults, and investigating action and behavior of a double-bus protection device. The RTDS-based double-bus protection dynamic simulation experimental method has the advantages of being universal in the models, being capable of changing fault occurring position flexibility, and achieving closed-loop control of switching value.
Description
Technical field
The invention belongs to power system automation technology field, particularly relate to a kind of double-bus based on RTDS protection dynamic model experiment method.
Background technology
The core of microcomputer protecting device is generally made up of digital circuit, and digital circuit communicates with peripheral interface unit, it is achieved the function that the sampling of protector, logical process and On-off signal export. typical microcomputer protecting device is by logical process unit (CPU), switching value I/O interface, analog quantity sampling interface, man-machine interaction interface (UI) and communication interface composition, and the bus protection protection that substation is most crucial beyond doubt, the bus protection of a certain voltage range needs to gather the spaced information of institute under this voltage range and calculates, therefore, the test of bus protector is extremely important, and the method adopting traditional quiet mould test is difficult to the logic to double-bus protection and function tests (needing the sampled value adding three intervals) simultaneously, also cannot meet to the protection of digitizing microcomputer in real time simultaneously, the requirement of interactive testing, therefore utilize RTDS analogue system that it carries out emulation test and become a kind of effective means, research based on this respect also obtains attention gradually.
Summary of the invention
The above-mentioned technical problem existed for solving in prior art, the present invention proposes the double-bus protection dynamic model experiment method of a kind based on RTDS. Object is the problem solving and utilizing the relay protection instrument amount of adding difficulty when carrying out double-bus relay testing by the test of quiet mould; and requirement that the is protection of digitizing microcomputer is real-time, interactive testing cannot be met, such that it is able to double-bus protection is carried out test real-time, closed loop.
The present invention is achieved through the following technical solutions goal of the invention:
Based on the double-bus protection dynamic model experiment method of RTDS, being utilize RTDS to carry out double-bus protection real-time closed-loop test, concrete operation steps comprises:
1) hardware board in RTDS rack (RACK) is connected with the peripheral hardware needed for test, as shown in Figure 1, RTDS hardware processor plate card GPC/PB5 is connected with switch value input interface plate card GTDI, output switch parameter interface board card GTDO, analog output card GTAO, again switch value input interface plate card GTDI is connected with simulation isolating switch with output switch parameter interface board card GTDO, analog output card GTAO is connected with power amplifier, finally power amplifier and simulation isolating switch is connected with protector;
2) line synchro of the GTWIF on all RACK is connected on HUB ensure each RACK synchronous operation, communication connection network mouth on GTWIF is connected with exchange board, draw by exchange board again and it is linked into external computer, it is the same network segment that computer IP is set to the GTWIF with corresponding RACK, it is achieved computer is to its access;
3) the configuration file information utilizing RSCAD software to read hardware generates configuration file config_file, carry out the modeling of double-bus protection primary system modeling, two analog output modelings and switching value closed-loop control logic, and distribute resource according to configuration file, modeling after completing, model compilation generated drft file and under install in RTDS hardware board;
4) carry out the configuration of simulation test system according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, simulate various types of fault, investigate the action behavior of double-bus protector.
Described primary system modeling, is the primary system of a structure double-bus, comprises mother and three branch roads, wherein have two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, and load is meritorious and idle adjustable load.
Two times described analog output modelings; it is on bus, configure voltage transformer; branch road configures current transformer, by arranging the change ratio of analog output module and exportable small-signal, then the secondary voltage electric current needed for being protected after being amplified by power amplifier.
The modeling of described switching value closed-loop control logic, it is that the switching value information collected by GPC/PB5 associates with the switch variable in primary system model, realize the control of a model switch and cutter lock, the position of respective switch and cutter lock is exported to the closed-loop control that peripheral hardware realizes switching value simultaneously.
Described switching value closed-loop control logic; can by the output variable of RSCAD software definition switching value; mother combined floodgate signal in model is closed signal as switch hand and outputs to protector; this signal is sent to protection prior to the position of mother, it is possible to meets and charges mother in the detection of dead-zone fault.
Described configuration file config_file comprises the file that plate card and peripheral hardware connect relation, need to ensure when compiling generates drft file information in model export with hardware in config_file associate relationship consistency.
Described experimental technique is two burdens by increasing current transformer so that produce CT when primary system fault saturated, with the ability examining the anti-CT of protector saturated.
Described hardware board comprises communication and synchronous plate card GTWIF and logical operation plate card GPC/PB5, GTWIF plate card function has three, one is for each RACK distributes an IP address, it is connected with exchange board by netting twine, again the computer that RSCAD software is housed is connected with exchange board, namely by computer to access RACK, two be by each RACK between GTWIF plate cartoon cross the transmission that Fiber connection realizes data between RACK, three be by each RACK between GTWIF plate link the synchronous operation received and realize on HUB between each RACK, the function of GPC/PB5 plate card carries out data processing and logical operation.
Described peripheral hardware comprises two classes, one class refers to the plate card GTAO that the analog quantity numerary signal that GPC/PB5 exports is converted into simulation small-signal, and being outputed signal the power amplifier carrying out amplifying, another class carries out plate card GTDI, GTDO and the coupled switching value transfer equipment simulation isolating switch that communication realizes the amount of opening the light input and output.
The concrete operation steps of described experimental technique comprises: be connected by the GTWIF plate card in each RACK, being linked by each GTWIF plate receives on HUB and exchange board, the computer being provided with RSCAD software is connected on exchange board, hardware board in RACK is connected with the peripheral hardware needed for test, comprise two portions: GPC/PB5 plate card and GTDO and GTDI are passed through Fiber connection by (1), again GTDO and GTDI is connected by cable with simulation isolating switch rear panel respectively, finally will simulate isolating switch front panel to be connected with protector, form switching value closed loop control system; (2) GPC/PB5 plate card and GTAO are passed through Fiber connection, GTAO is connected by cable with the input terminus of power amplifier, finally the output terminal of power amplifier and protector is connected and composed analog output system by cable;
Carry out system modeling, the primary system of a structure double-bus, model comprises mother and three branch roads, wherein there are two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, load is meritorious and idle adjustable load, bus configures voltage transformer, branch road configures current transformer, by arranging the change ratio of analog output module and exportable small-signal, secondary voltage electric current needed for being protected after being amplified by power amplifier again, after building up model according to config_file carry out compiling generate drft file and under install to RTDS plate card carry out real time execution,
The configuration of simulation test system is carried out according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, by arranging fault type, fault time delay, the modes such as mobile position of fault simulate various types of fault, investigate the action behavior of double-bus protector, especially, the palmer hyperhidrosis signal that mother is provided is needed when simulating mother charging dead-zone fault, the hand now fault being placed on the dead band between mother and current transformer and define a mother closes signal and exports prior to the position of mother and can check double-bus protection function of Blocking Differential Protection when mother is charged in dead-zone fault, now charge protection answers action tripping mother, it is then not influenced that other normally run interval, in the antisaturation ability of the saturated test protection of simulation CT, two burdens of current transformer are more big, and then it distorts more serious in the output of failure condition, and two burdens that therefore can progressively increase current transformer are to complete this test.
Advantage and the useful effect of the present invention be:
(1) model possesses versatility, namely only a modeling need to be completed, only need to adjust corresponding parameter during experiment every time, (2) position that fault occurs can be changed flexibly, realize the closed-loop control of switching value simultaneously, can conveniently carry out various types of fault, such as dead zone protection is tested, thus solve the static simulation experiment amount of adding difficulty and the deficiency of closed loop test cannot be carried out, (3) can export by self-defined on-off model in switching value closed-loop control logic, a mother palmer hyperhidrosis signal is provided to bus protector, verify that mother is charged the function of when dead-zone fault Blocking Differential Protection.
Accompanying drawing explanation
Fig. 1 is that dynamic simulation test signal wiring is always schemed;
Fig. 2 is dynamic simulation test primary system model diagram;
Fig. 3 is trial model analog output structure iron;
Fig. 4 is switching value closed loop controlling structure figure.
Embodiment
The present invention is a kind of double-bus based on RTDS protection dynamic model experiment method; it is utilize power system real-time simulation system RTDS to carry out double-bus protection real-time closed-loop test; on upper computer software RSCAD, specifically carry out modeling; compile by after by installing under it, RTDS hardware board carries out real-time simulation operation, by simulate various types of fault investigate double-bus protection action behavior.
The concrete operation steps of the present invention comprises:
1) hardware board in RTDS rack (RACK) is connected with the peripheral hardware needed for test; as shown in Figure 1; RTDS hardware processor plate card GPC/PB5 is connected with switch value input interface plate card GTDI, output switch parameter interface board card GTDO, analog output card GTAO; again GTDI with GTDO is connected with simulation isolating switch; GTAO is connected with power amplifier, finally power amplifier and simulation isolating switch is connected with protector.
Described hardware board comprises communication and synchronous plate card GTWIF and logical operation plate card GPC/PB5, RTDS Communication Card GTWIF function has three, one is for each RACK distributes an IP address, it is connected with exchange board by netting twine, again the computer that RSCAD software is housed is connected with exchange board, namely by computer to access RACK, two be by each RACK between GTWIF plate cartoon cross the transmission that Fiber connection realizes data between RACK, three be by each RACK between GTWIF plate link to receive concentrator HUB realize the synchronous operation between each RACK, the function of GPC/PB5 plate card carries out data processing and logical operation.
Described peripheral hardware comprises two classes, one class refers to the plate card GTAO that the analog quantity numerary signal that GPC/PB5 exports is converted into simulation small-signal, and being outputed signal the power amplifier carrying out amplifying, another class carries out plate card GTDI, GTDO and the coupled switching value transfer equipment simulation isolating switch that communication realizes the amount of opening the light input and output.
2) line synchro of the GTWIF on all RACK is connected on HUB and ensures the synchronous operation between each RACK, communication connection network mouth on GTWIF is connected with exchange board, draw by exchange board again and it is linked into external computer, it is the same network segment that computer IP is set to the GTWIF with corresponding RACK, it is achieved computer is to its access.
3) the configuration file information utilizing RSCAD software to read hardware generates configuration file config_file; carry out the modeling of double-bus protection primary system modeling, two analog output modelings and switching value closed-loop control logic; and distribute resource according to configuration file, model compilation is generated drft(and compiles file by modeling after completing) and under install in RTDS hardware board.
Described primary system modeling, is the primary system of a structure double-bus, comprises mother and three branch roads, wherein have two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, and load is meritorious and idle adjustable load.
Two times described analog output modelings; it is on bus, configure voltage transformer; branch road configures current transformer, by arranging the change ratio of analog output module and exportable small-signal, then the secondary voltage electric current needed for being protected after being amplified by power amplifier.
The modeling of described switching value closed-loop control logic, it is that the switching value information collected by GPC/PB5 associates with the switch variable in primary system model, realize the control of a model switch and cutter lock, the position of respective switch and cutter lock is exported to the closed-loop control that peripheral hardware realizes switching value simultaneously.
Described switching value closed-loop control logic; can by the output variable of RSCAD software definition switching value; mother combined floodgate signal in model is closed signal as switch hand and outputs to protector; this signal is sent to protection prior to the position of mother, it is possible to meets and charges mother in the detection of dead-zone fault.
Described configuration file config_file comprises the file that plate card and peripheral hardware connect relation, need to ensure when compiling generates drft file information in model export with hardware in config_file associate relationship consistency.
4) carry out the configuration of simulation test system according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, simulate various types of fault, investigate the action behavior of double-bus protector.
The present invention can also by increasing by two burdens of current transformer so that produces CT when primary system fault saturated, with the ability examining the anti-CT of protector saturated.
Embodiment:
GTWIF plate card in each RACK is connected, being linked by each GTWIF plate receives on HUB and exchange board, the computer being provided with RSCAD software is connected on exchange board, as shown in Figure 1, hardware board in RACK is connected with the peripheral hardware needed for test, comprise two portions: GPC/PB5 plate card and GTDO and GTDI are passed through Fiber connection by (1), again GTDO and GTDI is connected by cable with simulation isolating switch rear panel respectively, finally will simulate isolating switch front panel to be connected with protector, form switching value closed loop control system, as shown in Figure 4, (2) GPC/PB5 plate card and GTAO are passed through Fiber connection, GTAO is connected by cable with the input terminus of power amplifier, finally the output terminal of power amplifier and protector are connected and composed analog output system by cable, as shown in Figure 3, config_file is generated according to current signal wiring relation.
Carry out system modeling, the primary system of a structure double-bus, as shown in Figure 2, model comprises mother and three branch roads, wherein there are two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, load is meritorious and idle adjustable load, bus configures voltage transformer, branch road configures current transformer, by arranging the change ratio of analog output module and exportable small-signal, secondary voltage electric current needed for being protected after being amplified by power amplifier again, after building up model according to config_file carry out compiling generate drft file and under install to RTDS plate card carry out real time execution. as shown in Figure 3, Fig. 3 is trial model analog output structure iron.
The configuration of simulation test system is carried out according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, by arranging fault type, fault time delay, the modes such as mobile position of fault simulate various types of fault, investigate the action behavior of double-bus protector, especially, the palmer hyperhidrosis signal that mother is provided is needed when simulating mother charging dead-zone fault, the hand now fault being placed on the dead band between mother and current transformer and define a mother closes signal and exports prior to the position of mother and can check double-bus protection function of Blocking Differential Protection when mother is charged in dead-zone fault, now charge protection answers action tripping mother, it is then not influenced that other normally run interval.
During the antisaturation ability of the saturated test protection of simulation CT, owing to two times of current transformer burdens are more big then, it is more serious in the output distortion of failure condition, and two burdens that therefore can progressively increase current transformer are to complete this test.
Claims (10)
1. based on the double-bus protection dynamic model experiment method of RTDS, it is characterized in that: utilizing RTDS to carry out double-bus protection real-time closed-loop test, concrete operation steps comprises:
1) hardware board in RTDS rack (RACK) is connected with the peripheral hardware needed for test, as shown in Figure 1, RTDS hardware processor plate card GPC/PB5 is connected with switch value input interface plate card GTDI, output switch parameter interface board card GTDO, analog output card GTAO, again switch value input interface plate card GTDI is connected with simulation isolating switch with output switch parameter interface board card GTDO, analog output card GTAO is connected with power amplifier, finally power amplifier and simulation isolating switch is connected with protector;
2) line synchro of the GTWIF on all RACK is connected on HUB ensure each RACK synchronous operation, communication connection network mouth on GTWIF is connected with exchange board, draw by exchange board again and it is linked into external computer, it is the same network segment that computer IP is set to the GTWIF with corresponding RACK, it is achieved computer is to its access;
3) the configuration file information utilizing RSCAD software to read hardware generates configuration file config_file, carry out the modeling of double-bus protection primary system modeling, two analog output modelings and switching value closed-loop control logic, and distribute resource according to configuration file, modeling after completing, model compilation generated drft file and under install in RTDS hardware board;
4) carry out the configuration of simulation test system according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, simulate various types of fault, investigate the action behavior of double-bus protector.
2. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method, is characterized in that:
Described primary system modeling, is the primary system of a structure double-bus, comprises mother and three branch roads, wherein have two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, and load is meritorious and idle adjustable load.
3. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: two times described analog output modelings; it is on bus, configure voltage transformer; branch road configures current transformer; by arranging the change ratio of analog output module and exportable small-signal, then the secondary voltage electric current needed for being protected after being amplified by power amplifier.
4. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: the modeling of described switching value closed-loop control logic; it is that the switching value information collected by GPC/PB5 associates with the switch variable in primary system model; realize the control of a model switch and cutter lock, the position of respective switch and cutter lock is exported to the closed-loop control that peripheral hardware realizes switching value simultaneously.
5. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: described switching value closed-loop control logic; can by the output variable of RSCAD software definition switching value; mother combined floodgate signal in model is closed signal as switch hand and outputs to protector; this signal is sent to protection prior to the position of mother, it is possible to meets and charges mother in the detection of dead-zone fault.
6. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: described configuration file config_file; comprise the file that plate card and peripheral hardware connect relation, need to ensure when compiling generates drft file information in model export with hardware in config_file associate relationship consistency.
7. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: described experimental technique is two burdens by increasing current transformer; make to produce CT when primary system fault saturated, with the ability examining the anti-CT of protector saturated.
8. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method, it is characterized in that: described hardware board comprises communication and synchronous plate card GTWIF and logical operation plate card GPC/PB5, GTWIF plate card function has three, one is for each RACK distributes an IP address, it is connected with exchange board by netting twine, again the computer that RSCAD software is housed is connected with exchange board, namely by computer to access RACK, two be by each RACK between GTWIF plate cartoon cross the transmission that Fiber connection realizes data between RACK, three be by each RACK between GTWIF plate link the synchronous operation received and realize on HUB between each RACK, the function of GPC/PB5 plate card carries out data processing and logical operation.
9. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method; it is characterized in that: described peripheral hardware comprises two classes; one class refers to the plate card GTAO that the analog quantity numerary signal that GPC/PB5 exports is converted into simulation small-signal; and being outputed signal the power amplifier carrying out amplifying, another class carries out plate card GTDI, GTDO and the coupled switching value transfer equipment simulation isolating switch that communication realizes the amount of opening the light input and output.
10. the double-bus based on RTDS according to claim 1 protection dynamic model experiment method, is characterized in that: the concrete operation steps of described experimental technique comprises:
GTWIF plate card in each RACK is connected, being linked by each GTWIF plate receives on HUB and exchange board, the computer being provided with RSCAD software is connected on exchange board, hardware board in RACK is connected with the peripheral hardware needed for test, comprise two portions: GPC/PB5 plate card and GTDO and GTDI are passed through Fiber connection by (1), again GTDO and GTDI is connected by cable with simulation isolating switch rear panel respectively, finally will simulate isolating switch front panel to be connected with protector, form switching value closed loop control system; (2) GPC/PB5 plate card and GTAO are passed through Fiber connection, GTAO is connected by cable with the input terminus of power amplifier, finally the output terminal of power amplifier and protector is connected and composed analog output system by cable;
Carry out system modeling, the primary system of a structure double-bus, model comprises mother and three branch roads, wherein there are two power supply branch roads and a load branch circuit, power supply is Infinite bus system or generatortransformer unit, load is meritorious and idle adjustable load, bus configures voltage transformer, branch road configures current transformer, by arranging the change ratio of analog output module and exportable small-signal, secondary voltage electric current needed for being protected after being amplified by power amplifier again, after building up model according to config_file carry out compiling generate drft file and under install to RTDS plate card carry out real time execution,
The configuration of simulation test system is carried out according to the drft file generated, generate configuration file and real time execution in Runtime menu in RSCAD software, by arranging fault type, fault time delay, the modes such as mobile position of fault simulate various types of fault, investigate the action behavior of double-bus protector, especially, the palmer hyperhidrosis signal that mother is provided is needed when simulating mother charging dead-zone fault, the hand now fault being placed on the dead band between mother and current transformer and define a mother closes signal and exports prior to the position of mother and can check double-bus protection function of Blocking Differential Protection when mother is charged in dead-zone fault, now charge protection answers action tripping mother, it is then not influenced that other normally run interval, in the antisaturation ability of the saturated test protection of simulation CT, two burdens of current transformer are more big, and then it distorts more serious in the output of failure condition, and two burdens that therefore can progressively increase current transformer are to complete this test.
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| CN108919777A (en) * | 2018-06-27 | 2018-11-30 | 中国南方电网有限责任公司电网技术研究中心 | Digital closed-loop test system and method of stability control system |
| CN108919777B (en) * | 2018-06-27 | 2020-11-20 | 中国南方电网有限责任公司电网技术研究中心 | Digital closed-loop test system and method of stability control system |
| CN111830929A (en) * | 2020-06-12 | 2020-10-27 | 云南电网有限责任公司 | Closed-loop real-time simulation system based on synchronous parallel test of multiple stability control devices |
| CN111830929B (en) * | 2020-06-12 | 2023-08-18 | 云南电网有限责任公司 | Closed-loop real-time simulation system based on synchronous parallel test of multiple stable control devices |
| 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 |
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