CN110514941A - Real-time simulation open-loop test method suitable for direct-current protection test - Google Patents
Real-time simulation open-loop test method suitable for direct-current protection test Download PDFInfo
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- CN110514941A CN110514941A CN201910936850.5A CN201910936850A CN110514941A CN 110514941 A CN110514941 A CN 110514941A CN 201910936850 A CN201910936850 A CN 201910936850A CN 110514941 A CN110514941 A CN 110514941A
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- 238000012360 testing method Methods 0.000 title claims abstract description 118
- 238000004088 simulation Methods 0.000 title claims abstract description 99
- 238000010998 test method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 4
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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
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Abstract
The invention discloses a real-time simulation open-loop test method suitable for direct current protection test, which comprises the steps of determining an analog quantity output value or a digital quantity output value required by protection through a simulation open-loop test system according to the protection function type of a device to be tested, and transmitting the analog quantity output value or the digital quantity output value to the device to be tested so as to carry out simulation test; wherein, the tested equipment is a direct current protection device; and analyzing the simulation test result of the tested equipment through a simulation open-loop test system, judging whether the protection function type of the tested equipment is normal or not, and locally displaying. The real-time simulation open-loop test method suitable for the direct current protection test can test the four elements of the direct current protection more accurately, not only can overcome the defects of closed-loop test in the prior art, but also can realize more complete test on the direct current protection.
Description
Technical Field
The embodiment of the invention relates to the technical field of simulation tests, in particular to a real-time simulation open-loop test method suitable for a direct-current protection test.
Background
Protection logic, fixed value, export mode, measurement exception handling and the like can be known by methods of program tracing, related file viewing and the like. However, after the direct current control protection system leaves a factory or modifies a program, four elements of protection are as follows: the judgment logic, protection constant value, export mode and redundancy function are verified through tests.
The current common method is a closed-loop simulation method, namely a set of direct current real-time simulation closed-loop system is established, faults on primary equipment are simulated (simulated by a real-time simulator), and the response of a direct current control protection system is observed. The advantages of this closed loop test method are: the response condition of the direct-current control protection system can be truly reflected after the primary equipment has the fault, and the coordination condition of protection can be effectively verified. However, the closed loop test method also has some disadvantages: because the protection test is carried out by only simulating the equipment fault once, four elements such as protection logic, fixed value and the like cannot be accurately verified; when the protection test is carried out, the interference of direct current control cannot be eliminated; during closed-loop testing, the required time is long because the direct-current running working condition needs to be considered, and direct-current sequential control operation and the like are involved.
In order to solve the disadvantages of closed-loop testing and more completely test direct current protection, the embodiment of the invention researches a real-time simulation open-loop testing method suitable for direct current protection testing.
Disclosure of Invention
The invention provides a real-time simulation open-loop test method suitable for a direct-current protection test, which aims to overcome the defects of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a real-time simulation open-loop test method suitable for a direct current protection test, the method comprising:
according to the protection function type of the tested equipment to be tested, determining an analog quantity output value or a digital quantity output value required by protection through a simulation open-loop test system, and transmitting the analog quantity output value or the digital quantity output value to the tested equipment to perform simulation test; wherein, the tested equipment is a direct current protection device;
and analyzing the simulation test result of the tested equipment through a simulation open-loop test system, judging whether the protection function type of the tested equipment is normal or not, and locally displaying.
Further, in the real-time simulation open-loop test method suitable for the dc protection test, after the step of determining an analog output value or a digital output value required for protection by the simulation open-loop test system, the method further includes:
and converting the analog quantity output value or the digital quantity output value into data matched with the interface protocol of the tested equipment through a simulation open loop test system.
Further, in the real-time simulation open-loop test method suitable for the direct-current protection test, the analog output value includes an analog output fixed value, an analog output variable value and a field recording.
Further, in the real-time simulation open-loop test method suitable for the dc protection test, the step of determining an analog output value or a digital output value required for protection by a simulation open-loop test system according to a protection function type of a device under test to be tested, and transmitting the analog output value or the digital output value to the device under test for performing the simulation test includes:
receiving an analog quantity input value or a digital quantity input value required by protection through a simulation open-loop test system according to the protection function type of a tested device to be tested;
programming the analog quantity input value or the digital quantity input value through a simulation open loop test system, and performing real-time digital simulation calculation to determine a corresponding analog quantity output value or a corresponding digital quantity output value;
transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test;
or,
selecting an analog quantity output value or a digital quantity output value required by corresponding protection in a template library through a simulation open-loop test system according to the protection function type of a device to be tested;
and transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test.
Further, in the real-time simulation open-loop test method suitable for the dc protection test, before the step of determining an analog output value or a digital output value required for protection by a simulation open-loop test system according to a protection function type of a device under test to be tested, and transmitting the analog output value or the digital output value to the device under test for performing a simulation test, the method further includes:
and (4) building a real-time simulation open-loop test system in a self-defined modeling mode.
Further, in the real-time simulation open-loop test method suitable for the direct-current protection test, the real-time simulation open-loop test system comprises a real-time simulation system workstation, a real-time simulator, an analog output card, an I/O unit and a human-computer interface which are sequentially connected.
Further, in the real-time simulation open-loop test method suitable for the dc protection test, after the step of building the real-time simulation open-loop test system by the custom modeling, the method further includes:
and accessing the tested equipment between the I/O unit and the human-computer interface.
The real-time simulation open-loop test method suitable for the direct current protection test provided by the embodiment of the invention can more accurately test the four elements of the direct current protection, not only can overcome the defects of closed-loop test in the prior art, but also can realize more complete test on the direct current protection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a real-time simulation open-loop test method suitable for a dc protection test according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a simulation open-loop test system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic flow chart of a real-time simulation open-loop test method suitable for a dc protection test according to an embodiment of the present invention. The method specifically comprises the following steps:
s101, according to the protection function type of the tested equipment to be tested, determining an analog quantity output value or a digital quantity output value required by protection through a simulation open loop test system, and transmitting the analog quantity output value or the digital quantity output value to the tested equipment to perform simulation test;
wherein, the tested equipment is a direct current protection device;
the analog output value comprises an analog output fixed value, an analog output variable value and field recording.
Specifically, the step S101 further includes:
(1) receiving an analog quantity input value or a digital quantity input value required by protection through a simulation open-loop test system according to the protection function type of a tested device to be tested;
(2) programming the analog quantity input value or the digital quantity input value through a simulation open loop test system, and performing real-time digital simulation calculation to determine a corresponding analog quantity output value or a corresponding digital quantity output value;
(3) transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test;
or,
(1) selecting an analog quantity output value or a digital quantity output value required by corresponding protection in a template library through a simulation open-loop test system according to the protection function type of a device to be tested;
(2) and transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test.
It should be noted that the analog output value or the digital output value in the template library is pre-constructed, which is convenient for increasing the testing speed. Generally, the template library includes analog output values or digital output values corresponding to several typical analog or digital values required for protection. And the process of construction is the same as the process of processing the analog quantity input value or the digital quantity input value.
It should be further noted that the analog or digital values required for protection can be combed and the characteristics of the analog values can be checked by looking at the dc protection program or the dc protection specification.
S102, analyzing a simulation test result of the tested device through a simulation open-loop test system, judging whether the protection function type of the tested device is normal or not, and locally displaying.
Preferably, after the step of determining the analog quantity output value or the digital quantity output value required for protection by simulating the open loop test system, the method further includes:
and converting the analog quantity output value or the digital quantity output value into data matched with the interface protocol of the tested equipment through a simulation open loop test system.
Preferably, before the step of determining an analog output value or a digital output value required for protection by the simulation open-loop test system according to the protection function type of the device under test to be tested, and transmitting the analog output value or the digital output value to the device under test for simulation test, the method further includes:
and (4) building a real-time simulation open-loop test system in a self-defined modeling mode.
In this embodiment, the real-time simulation open-loop test system includes a real-time simulation system workstation, a real-time simulator, an analog output card, an I/O unit, and a human-computer interface, which are connected in sequence.
Preferably, after the step of building a real-time simulation open-loop test system by means of custom modeling, the method further includes:
and connecting the tested equipment between the I/O unit and the human-computer interface, as shown in FIG. 2.
Specifically, the simulation open-loop test system provided by this embodiment is simpler than a closed-loop system, and does not need a complete dc control protection system, taking a commonly-used RTDS real-time simulator as an example:
the real-time simulation system workstation runs RSCAD software (simulation software), programs an analog quantity input value or a digital quantity input value in the RSCAD software, carries out simulation calculation through a real-time simulator, and then enables an analog quantity output card (GTAO card) to output a specific value;
the IO unit is used for converting the analog input value or the digital input value sent by the analog output card into data matched with the interface protocol of the tested equipment.
The human-machine interface (HMI host) is used for providing an observation window for people to observe the test result of the tested equipment, such as whether the tested equipment has action, and the action is embodied as whether related events and recording waves exist.
The real-time simulation open-loop test method suitable for the direct current protection test provided by the embodiment of the invention can more accurately test the four elements of the direct current protection, not only can overcome the defects of closed-loop test in the prior art, but also can realize more complete test on the direct current protection.
The above embodiments are merely to illustrate the technical solutions of the present invention, and not to limit the same; 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 (7)
1. A real-time simulation open-loop test method suitable for a direct current protection test is characterized by comprising the following steps:
according to the protection function type of the tested equipment to be tested, determining an analog quantity output value or a digital quantity output value required by protection through a simulation open-loop test system, and transmitting the analog quantity output value or the digital quantity output value to the tested equipment to perform simulation test; wherein, the tested equipment is a direct current protection device;
and analyzing the simulation test result of the tested equipment through a simulation open-loop test system, judging whether the protection function type of the tested equipment is normal or not, and locally displaying.
2. The real-time simulation open-loop test method suitable for the dc protection test according to claim 1, further comprising, after the step of determining the analog output value or the digital output value required for protection by the simulation open-loop test system:
and converting the analog quantity output value or the digital quantity output value into data matched with the interface protocol of the tested equipment through a simulation open loop test system.
3. The real-time simulation open-loop test method suitable for the DC protection test according to claim 2, wherein the analog output values comprise an analog output constant value, an analog output variable value and a field recording.
4. The real-time simulation open-loop test method suitable for the direct current protection test as claimed in claim 1, wherein the step of determining the analog output value or the digital output value required by the protection through the simulation open-loop test system according to the protection function type of the device under test to be tested, and transmitting the analog output value or the digital output value to the device under test for the simulation test comprises:
receiving an analog quantity input value or a digital quantity input value required by protection through a simulation open-loop test system according to the protection function type of a tested device to be tested;
programming the analog quantity input value or the digital quantity input value through a simulation open loop test system, and performing real-time digital simulation calculation to determine a corresponding analog quantity output value or a corresponding digital quantity output value;
transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test;
or,
selecting an analog quantity output value or a digital quantity output value required by corresponding protection in a template library through a simulation open-loop test system according to the protection function type of a device to be tested;
and transmitting the analog quantity output value or the digital quantity output value to the tested equipment through a simulation open loop test system so as to carry out simulation test.
5. The real-time simulation open-loop test method suitable for the direct current protection test, according to claim 1, wherein before the step of determining the analog output value or the digital output value required by the protection through the simulation open-loop test system according to the protection function type of the device under test to be tested, and transmitting the analog output value or the digital output value to the device under test for the simulation test, the method further comprises:
and (4) building a real-time simulation open-loop test system in a self-defined modeling mode.
6. The real-time simulation open-loop test method suitable for the DC protection test according to claim 5, wherein the real-time simulation open-loop test system comprises a real-time simulation system workstation, a real-time simulator, an analog output card, an I/O unit and a human-computer interface which are connected in sequence.
7. The real-time simulation open-loop test method suitable for the direct-current protection test, according to claim 6, after the step of building the real-time simulation open-loop test system by the custom modeling, the method further comprises:
and accessing the tested equipment between the I/O unit and the human-computer interface.
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Cited By (1)
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| CN113391156A (en) * | 2021-06-23 | 2021-09-14 | 四川华能宝兴河水电有限责任公司 | Power system fault reproduction method |
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