CN213398901U - Real-time simulation test platform of electronic transformer measurement system - Google Patents
Real-time simulation test platform of electronic transformer measurement system Download PDFInfo
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Abstract
The utility model discloses a real-time simulation test platform of an electronic transformer measuring system, which comprises a real-time simulator, one or more non-redundant channels, a redundant channel and a plurality of control protection devices; a first output end of the real-time simulator is connected with an input end of the non-redundant channel, and a second output end of the real-time simulator is connected with an input end of the redundant channel; the input end of each control protection device is connected with the output end of the non-redundant channel or the output end of the redundant channel. The utility model discloses not only can test, check direct current engineering secondary measurement system's measurement accuracy and response characteristic, but also the influence of single component measurement deviation, measurement system quality anomaly to HVDC control protection system can be analyzed.
Description
Technical Field
The utility model relates to an electric power system measures technical field, especially relates to an electronic transformer measurement system's real-time simulation test platform.
Background
With the development of power technology, the traditional electromagnetic mutual inductor is difficult to meet the requirements of further development of a power system, and a series of serious defects of magnetic saturation, ferromagnetic resonance, poor anti-electromagnetic interference capability and the like are exposed. Electronic transformers, which are essentially devices for digitizing analog quantities in situ, have been developed and used rapidly in recent years, and the purpose of the electronic transformers is to convert analog quantities of voltage and current into digital quantities in a reliable manner with the most cost performance at a place as close to a signal source as possible. The power supply can be divided into an active type and a passive type according to whether the collector on the high-voltage side needs to provide power supply. But the electronic transformer still has optimization space in reliability and stability.
In recent years, a high-voltage direct current (HVDC) project which is put into operation in China has a plurality of measuring deviation accidents of an active electronic transformer measuring system. The measurement deviation not only directly affects the protection system, but also affects the control of the direct current system, thereby affecting the normal operation of the HVDC system. In order to further improve the reliability of the HVDC operation, the influence of the measurement deviation on the HVDC control protection system needs to be carefully evaluated, so that a coping strategy is made in advance. Although the existing test platform can test and check the measurement precision and response characteristics of the secondary measurement system of the direct current engineering, the redundancy of a measurement loop is not considered, and the redundant control protection system and the non-redundant control protection system share the same measurement loop, so that the influence of the measurement deviation on the HVDC control protection system cannot be accurately evaluated, and especially a single-element measurement deviation test cannot be carried out.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an aim at provides an electronic transformer measurement system's real-time simulation test platform, not only testable, check direct current engineering secondary measurement system's measurement accuracy and response characteristic, but also the influence of single component measurement deviation of assay, measurement system quality anomaly to HVDC control protection system.
In order to achieve the above object, an embodiment of the present invention provides a real-time simulation test platform for an electronic transformer measurement system, which includes a real-time simulator, one or more non-redundant channels, a redundant channel, and a plurality of control protection devices; wherein,
a first output end of the real-time simulator is connected with an input end of the non-redundant channel, and a second output end of the real-time simulator is connected with an input end of the redundant channel;
the input end of each control protection device is connected with the output end of the non-redundant channel or the output end of the redundant channel.
Preferably, the non-redundant channel includes a first analog output board, n first resistor boxes, n first remote modules, and a first merging unit including n input terminals; the input end of the first analog output board card is connected with the first output end of the real-time simulator, the first analog output board card is provided with n output ends, each output end is correspondingly connected with the input end of one first resistor box, the output end of each first resistor box is connected with the input end of one first remote module, the output end of each first remote module is correspondingly connected with one input end of the first merging unit, and the output end of the first merging unit can be connected with the input end of each control protection device.
Preferably, the redundant channel includes a second analog output board card, m second resistor boxes, m second remote modules, and a second merging unit including m input terminals; the input end of the second analog output board card is connected with the second output end of the real-time simulator, the second analog output board card is provided with m output ends, each output end is correspondingly connected with the input end of one second resistor box, the output end of each second resistor box is connected with the input end of one second far-end module, the output end of each second far-end module is correspondingly connected with one input end of the second merging unit, and the output end of the second merging unit can be connected with the input end of each control protection device.
Preferably, an adder is arranged in the real-time simulator, and a second output end of the real-time simulator is connected with an input end of the second analog output board card through the adder.
Preferably, the real-time simulation test platform of the electronic transformer measurement system further comprises a workstation, and an output end of the workstation is connected with an input end of the real-time simulator.
Preferably, the control protection device has k input ends, and each input end is connected with the output end of the non-redundant channel or the output end of the redundant channel; wherein k is greater than the number of non-redundant lanes.
Preferably, each input of the control protection device is connected to an output of the first merging unit or an output of the second merging unit.
Compared with the prior art, the embodiment of the utility model provides a real-time simulation test platform of electronic transformer measurement system, the on-the-spot measurement system configuration scheme is not removed, but each measurement station only disposes secondary measurement return circuit all the way, dispose redundant passageway all the way again and supply each measurement station sharing, save equipment and reduce area, and functional configuration is nimble, not only testable, check direct current engineering secondary measurement system's measurement accuracy and response characteristic, still analyzable single component measurement deviation, the influence of measurement system quality anomaly to HVDC control protection system, in order to make counter-measures in advance, further improve the reliability of HVDC operation.
Drawings
Fig. 1 is a schematic diagram of a real-time simulation test platform of an electronic transformer measurement system provided in embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a simulation logic for measuring deviation by using a single element according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a wiring diagram of the on-site electronic transformer measuring system in the dc engineering provided by the embodiment of the present invention.
Fig. 4 is a detailed schematic diagram of a real-time simulation test platform of an electronic transformer measurement system provided in embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a schematic diagram of a real-time simulation test platform of an electronic transformer measurement system provided in embodiment 1 of the present invention is shown, where the test platform includes a real-time simulator, one or more non-redundant channels, a redundant channel, and a plurality of control protection devices; wherein,
a first output end of the real-time simulator is connected with an input end of the non-redundant channel, and a second output end of the real-time simulator is connected with an input end of the redundant channel;
the input end of each control protection device is connected with the output end of the non-redundant channel or the output end of the redundant channel.
It should be noted that the transformer for power system is a special transformer for transmitting the information of high voltage and large current of power grid to the metering and measuring instrument of low voltage and small current secondary side, and relay protection and automatic device, and is a connection element of primary system and secondary system, its primary winding is connected to power grid, and its secondary winding is respectively connected with measuring instrument and protection device. The mutual inductor is matched with the measuring instrument and the metering device, and can measure the voltage, the current and the electric energy of a primary system; and the device can be matched with a relay protection device and an automatic device to form electric protection and automatic control on various faults of a power grid. The performance of the mutual inductor directly influences the accuracy of measurement and metering of the power system and the reliability of the action of the relay protection device.
The utility model discloses based on the research to the electronic transformer measurement system that electric power system used, provide an electronic transformer measurement system's real-time simulation test platform, can be according to actual electric power condition analog measurement system's test to know electronic transformer measurement system's working property to electric power system's influence, in order to provide the reliability of electric power system work better.
Specifically, the test platform comprises a real-time simulator, one or more non-redundant channels, one redundant channel and a plurality of control protection devices; the first output end of the real-time simulator is connected with the input end of the non-redundant channel, and the second output end of the real-time simulator is connected with the input end of the redundant channel; the input end of each control protection device is connected with the output end of the non-redundant channel or the output end of the redundant channel. The real-time simulator is used for simulating an actual primary circuit of the direct current engineering, each non-redundant channel is an output channel of a measuring point, and the redundant channel and each non-redundant channel jointly form two independent measuring circuits of a certain measuring point in the actual primary circuit of the direct current engineering. That is to say, the redundant channel is shared by each measuring point, and each measuring point does not need to be configured with the redundant channel independently, so that equipment and floor area are saved, and the function configuration is flexible. In more detail, the first output terminal of the real-time simulator is connected with the input terminal of the non-redundant channel, the second output terminal of the real-time simulator is connected with the input terminal of the redundant channel, so that the analog quantity of the real-time simulator can be transmitted in two paths, the normal analog quantity is transmitted through the non-redundant channel, the deviated analog quantity is transmitted through the redundant channel, and simultaneously the input terminal of each control protection device is connected with the output terminal of the non-redundant channel or the output terminal of the redundant channel, when a certain control protection device is required to be tested and influenced by a certain deviated analog quantity, only the input terminal of the control protection device is connected with the output terminal of the redundant channel, and the input terminals of the other control protection devices are connected with the output terminals of the non-redundant channel, so that the normal analog quantity can be transmitted to the other control protection devices through the non-redundant channel, and the analog quantity with deviation is transmitted to the control, this allows observing the response of a certain control and protection device after being influenced by a certain deviating analog quantity. In addition, there are a plurality of control protection devices, and preferably, there are three control protection devices.
The embodiment 1 provides a real-time simulation test platform of electronic transformer measurement system, through setting up two way measurement circuit, can be through two way transmissions with real-time simulator's analog quantity, the operation is more nimble effective, not only testable, check direct current engineering secondary measurement system's measurement accuracy and response characteristic, still analyzable single component measurement deviation, the measurement system quality is unusual to HVDC control protection system's influence, in order to further improve the reliability of HVDC operation, the problem of can not accurate analysis measurement deviation to control protection influence is led to with the same measurement circuit of non-redundant measurement circuit sharing among the prior art to redundant measurement circuit and non-redundant measurement circuit sharing has been solved.
As an improvement of the above scheme, the non-redundant channel includes a first analog output board, n first resistor boxes, n first remote modules, and a first merging unit including n input terminals; the input end of the first analog output board card is connected with the first output end of the real-time simulator, the first analog output board card is provided with n output ends, each output end is correspondingly connected with the input end of one first resistor box, the output end of each first resistor box is connected with the input end of one first far-end module, the output end of each first far-end module is correspondingly connected with one input end of the first merging unit, and the output end of the first merging unit can be connected with the input end of each control protection device.
Specifically, the non-redundant channel includes a first analog output board, n first resistor boxes, n first remote modules, and a first combining unit including n input terminals, where the first resistor boxes, the first remote modules, and the first combining unit are configured as in an actual dc power transmission project. The input end of the first analog output board card is connected with the first output end of the real-time simulator, the first analog output board card is provided with n output ends, each output end is correspondingly connected with the input end of one first resistor box, the output end of each first resistor box is connected with the input end of one first far-end module, and the input end of the first far-end module corresponds to an analog input interface for transmitting analog quantity transmitted by the real-time simulator. The output end of each first remote module is correspondingly connected with one input end of the first merging unit, and the output end of the first remote module corresponds to the ST communication optical fiber interface, that is, the first merging unit comprises n input ends and can receive data transmitted by each first remote module, and then merge the data and transmit the data to the next component. In addition, the first remote module further comprises an FC powered fiber optic interface for receiving laser power from the first merging unit. The output of the first merging unit can be connected to the input of each control and protection device and is not limited to a single control and protection device, i.e. the data of the first merging unit can be transmitted to each control and protection device, only the connection need be selected according to the test requirements.
As an improvement of the above scheme, the redundant channel includes a second analog output board card, m second resistor boxes, m second remote modules, and a second merging unit including m input terminals; the input end of the second analog output board card is connected with the second output end of the real-time simulator, the second analog output board card is provided with m output ends, each output end is correspondingly connected with the input end of one second resistor box, the output end of each second resistor box is connected with the input end of one second far-end module, the output end of each second far-end module is correspondingly connected with one input end of the second merging unit, and the output end of the second merging unit can be connected with the input end of each control protection device.
Specifically, the redundant channel comprises a second analog quantity output board card, m second resistance boxes, m second remote modules and a second merging unit comprising m input ends. In fact, the configuration of the redundant channel is the same as that of the non-redundant channel, and the configuration of the redundant channel is different only by name, so that the redundant channel and the non-redundant channel are convenient to distinguish. Therefore, m ═ n, i.e., the number of inputs of the second resistor box, the second remote module, and the second combining unit is preferably equal to the number of inputs of the first resistor box, the first remote module, and the first combining unit. The input end of the second analog output board card is connected with the second output end of the real-time simulator, the second analog output board card is provided with m output ends, each output end is correspondingly connected with the input end of one second resistor box, the output end of each second resistor box is connected with the input end of one second far-end module, and the input end of the second far-end module corresponds to an analog input interface for transmitting analog quantity transmitted by the real-time simulator. The output end of each second remote module is correspondingly connected with one input end of the second merging unit, and the output end of the second remote module corresponds to the ST communication optical fiber interface, that is, the second merging unit comprises m input ends, can receive the data transmitted by each second remote module, and then merges the data and transmits the data to the next component. In addition, the second remote module further comprises an FC powered fiber optic interface for receiving laser power from the second merging unit. The output of the second merging unit can be connected to the input of each of said control and protection devices and is not limited to a single control and protection device, i.e. the data of the second merging unit can be transmitted to each control and protection device, only the connection or not needs to be selected according to the test requirements.
As an improvement of the above scheme, an adder is arranged in the real-time simulator, and a second output end of the real-time simulator is connected with an input end of the second analog output board card through the adder.
It should be noted that, referring to fig. 2, a schematic diagram of the analog logic of the single-element measurement deviation provided in this embodiment is shown. As shown in fig. 2, when a single-element measurement deviation test is required, a direct-current transmission real-time simulation test model including single-element measurement deviation simulation logic needs to be built in a real-time simulator, and in order to test the influence of the single-element measurement deviation on the control protection device, analog quantities are respectively transmitted in two paths, one path is directly transmitted through a non-redundant channel without any processing, and the other path is transmitted to an adder for positive deviation and negative deviation tests and then transmitted. That is to say, an adder is arranged in the real-time simulator, and a second output end of the real-time simulator is connected with an input end of the second analog quantity output board card through the adder.
As an improvement of the above scheme, the real-time simulation test platform of the electronic transformer measurement system further comprises a workstation, and an output end of the workstation is connected with an input end of the real-time simulator.
It should be noted that, referring to fig. 3, fig. 3 is a wiring schematic diagram of a measurement system of an electronic transformer in a dc engineering field, a measurement point of a main loop of the dc engineering passes through a shunt/voltage divider, where the shunt corresponds to a current transformer, the voltage divider corresponds to a voltage transformer, and the shunt/voltage divider is correspondingly connected to a plurality of remote modules through a plurality of resistor boxes. The shunt/voltage divider, the resistor box and the far-end module are matched to convert high voltage and large current of a primary loop into low voltage and small current which can be used by a control protection system, and convert electric signals into optical signals. And each remote module completes analog sampling according to the synchronous signals extracted from the energy supply optical fibers and sends sampling data to the merging unit through the communication optical fibers. The merging unit completes merging processing of the sampled data of the multiple main loop measuring points, and sends the merged data to the direct current control protection system within a determined time delay according to a specified interface protocol.
In this embodiment, the real-time simulation test platform of the electronic transformer measurement system further includes a workstation, the workstation and the real-time simulator are used to establish a real-time simulation model of the primary loop of the dc engineering, and an output end of the workstation is connected to an input end of the real-time simulator, so as to complete establishment of the model and output of the analog quantity.
As an improvement of the above scheme, the control protection device has k input ends, and each input end is connected with the output end of the non-redundant channel or the output end of the redundant channel; wherein k is greater than the number of non-redundant lanes.
Specifically, the control protection device has k inputs, each of which is connected to an output of a non-redundant channel or an output of a redundant channel, in order that the control protection device can receive a normal analog from the non-redundant channel or a biased analog from the redundant channel. K is larger than the number of the non-redundant channels, and since the measurement loop of each measurement point is a non-redundant channel, the influence of the input of the analog quantity of a plurality of measurement points on the control protection device is required to completely model the system of the actual direct current transmission project, so that the number of the input ends of the control protection device is larger than the number of the non-redundant channels, and the control protection device can be ensured to receive the analog quantity of all the measurement points.
As an improvement of the above solution, each input terminal of the control protection device is connected to an output terminal of the first merging unit or an output terminal of the second merging unit.
Specifically, the output terminal of the non-redundant channel is the output terminal of the first combination unit, and the output terminal of the redundant channel is the output terminal of the second combination unit, so that the control and protection device receives the normal analog quantity from the non-redundant channel or the biased analog quantity from the redundant channel, and each input terminal is connected with the output terminal of the first combination unit or the output terminal of the second combination unit.
For a more complete understanding of the present invention, a detailed schematic view of a real-time simulation testing platform of an electronic transformer measuring system provided in this embodiment 2 is shown in fig. 4. As shown in fig. 4, the test platform includes a workstation, a real-time simulator, a first analog output board, a second analog output board, a first resistor box, a second resistor box, a first remote module, a second remote module, a first merging unit, a second merging unit, and a control protection device. The non-redundant channel comprises a first analog output board card, a first resistance box, a first far-end module and a first merging unit, and the redundant channel comprises a second analog output board card, a second resistance box, a second far-end module and a second merging unit. The redundant channel is shared by all measuring points, and each measuring point does not need to be independently configured with the redundant channel, so that equipment and floor area are saved, and the function configuration is flexible. Fig. 2 shows only the measurement loop at one measurement point, and the structures and connection relationships of the measurement loops at other measurement points are the same as those in fig. 2.
The workstation and the real-time simulator are used for establishing a real-time simulation model of the primary loop of the actual direct-current engineering. The analog output board card is connected with the real-time simulator through optical fibers, receives digital quantity output by the real-time simulator, converts the digital quantity into analog quantity, and then sends the analog quantity to the first resistor box and the second resistor box through cables.
The first resistor box and the second resistor box are used for converting one path of analog signals into a plurality of paths of signals to be output and sending the signals to the first far-end module and the second far-end module for processing. The first far-end module and the second far-end module correspondingly receive analog quantity signals output by the first resistance box and the second resistance box through cables, convert the analog quantity signals into optical fiber signals and send the optical fiber signals to the first merging unit and the second merging unit through optical fibers. The power required for the first remote module to operate normally is supplied by the laser from the first merging unit power supply fiber, and the power required for the second remote module to operate normally is supplied by the laser from the second merging unit power supply fiber. The first remote module and the second remote module respectively comprise an analog input interface, an FC energy supply optical fiber interface and an ST communication optical fiber interface.
The first merging unit receives data from the plurality of first remote modules through the optical fiber, completes merging processing of the sampling data, and sends the merged data to the control protection device through the optical fiber within a determined time delay according to a specified interface protocol. Simultaneously, the first merging unit provides laser energy to the first remote module through the energy supply fiber. Likewise, the second merging unit also has the same function. The first merging unit and the second merging unit respectively comprise a laser and data receiving module, a data merging and sending module and a system management and state monitoring module, wherein the laser and data receiving module is used for receiving data transmitted from the first remote module or the second remote module and providing laser energy for the first remote module or the second remote module; and the data merging and sending module is used for merging the received data and then transmitting the merged data to the control protection device.
The control protection device receives digital signal data from the first merging unit or the second merging unit through the optical fiber to realize the direct current control protection function.
The specific test method is as follows:
in the first case: when a single-element measurement deviation test is required, the connection of each part in the measurement system is completed according to the test requirement: the input end of the tested control protection device is connected with the output end of the redundant channel, the input ends of the other control protection devices are connected with the output end of the non-redundant channel, namely, the input end of the tested control protection device is connected with the output end of the second merging unit, and the input ends of the other control protection devices are connected with the output end of the first merging unit. The simulation model for single element measurement deviation test is called a first simulation model, a first output end of the first simulation model is connected with an input end of a non-redundant channel, a second output end of the first simulation model is connected with an input end of a redundant channel, namely the first output end of the first simulation model is connected with an input end of a first analog quantity output board card, and the second output end of the first simulation model is connected with an input end of a second analog quantity output board card. After the measurement system is connected, starting a testing step:
the analog quantity to be tested is selected, and for the active electronic transformer measuring system, the corresponding analog quantity is direct current voltage and direct current. A first simulation model is set up in advance through a workstation and a real-time simulator, the operation of an actual direct-current transmission system is simulated, direct current is adjusted to a first preset working condition, and then the electric quantity of the real-time simulator under the first preset working condition is obtained.
And adjusting the transformation ratio of the first resistance box in the non-redundant channel to make the output of the non-redundant channel consistent with the output of the actual direct current transmission project, namely adjusting the transformation ratio of the first resistance box to make the first resistance box meet the following conditions: the analog variable ratio received by the first remote module, which is obtained by multiplying the variable ratio of the first analog output board card by the variable ratio of the first resistor box, is equal to the output variable ratio of the corresponding remote module in the direct-current transmission project. For example: the analog quantity conversion ratio received by the actual field remote module is k1, the first analog quantity output board conversion ratio is k2, and the conversion ratio k3 of the first resistor box is k1/k 2.
And adjusting the transformation ratio of the second resistance box in the redundant channel to make the output of the redundant channel consistent with the output of the actual direct-current transmission project, namely adjusting the transformation ratio of the second resistance box to make the second resistance box meet the following conditions: and the analog variable ratio received by the second remote module, which is obtained by multiplying the variable ratio of the second analog output board card by the variable ratio of the second resistor box, is equal to the output variable ratio of the corresponding remote module in the direct-current transmission project.
And adjusting the first simulation model to a first preset working condition for operation so that the first simulation model performs a positive deviation test and a negative deviation test. The first preset working condition can be a typical working condition of actual direct current transmission engineering operation, so that the simulation result is more in line with the actual condition, and the influence of the measurement deviation on the direct current transmission system can be more accurately analyzed.
The responses of all the control protection devices are acquired. The connection of each part, the building of the first simulation model and the testing steps in the measuring system are all directed at the single-element measurement deviation test, and through tests, specific responses of the tested control protection device can be known when the single-element measurement deviation is influenced, so that a strategy for dealing with the measurement deviation can be designed in advance.
The above steps only finish the measurement deviation test of a certain analog quantity, and if the measurement deviation test of other analog quantities is to be finished, only the selected analog quantity needs to be changed, and the above steps are repeated.
In the second case: when the measurement accuracy and the overall response characteristic of the direct current engineering secondary measurement system only need to be tested and checked, because the influence of the measurement deviation of a single element on a certain control protection device is not considered, a redundant channel is not needed, analog quantity only needs to be transmitted through a non-redundant channel, and therefore the input ends of all the control protection devices are connected with the output ends of the non-redundant channel, namely the input ends of all the control protection devices are connected with the output end of the first merging unit. The simulation model for testing the overall characteristics of the measurement system is called a second simulation model, the output end of the second simulation model is connected with the input end of the non-redundant channel, namely the output end of the second simulation model is connected with the input end of the first analog output board card.
And then, selecting the analog quantity to be tested, similarly, pre-building a second simulation model through the workstation and the real-time simulator, simulating the operation of the actual direct-current transmission project, adjusting the direct current to a second preset working condition, and then acquiring the electric quantity under the second preset working condition.
And adjusting the transformation ratio of the first resistance box in the non-redundant channel to make the output of the non-redundant channel consistent with the output of the actual direct current transmission project, namely adjusting the transformation ratio of the first resistance box to make the first resistance box meet the following conditions: the analog variable ratio received by the first remote module, which is obtained by multiplying the variable ratio of the first analog output board card by the variable ratio of the first resistor box, is equal to the output variable ratio of the corresponding remote module in the direct-current transmission project.
And adjusting the second simulation model to a second preset working condition for operation, wherein the second preset working condition corresponds to a typical working condition of actual direct current transmission project operation, and the second simulation model is adjusted according to actual needs.
The responses of all the control protection devices are acquired. The connection of each part in the measurement system, the establishment of the second simulation model and the test steps are all directed at the overall characteristic test of the measurement system, so that the accuracy and the overall response characteristic of the measurement system under different working conditions can be known by acquiring the response of the control protection device.
The quality abnormity test of the measurement system is similar to the overall characteristic test of the measurement system, but a certain section of transmission link in the measurement system needs to be manually disconnected under the condition that the simulation model operates under a preset working condition so as to observe the response of the control protection device.
To sum up, the embodiment of the utility model provides a real-time simulation test platform of electronic transformer measurement system, the on-the-spot measurement system configuration scheme is not moved to the reference, but each measurement station only disposes secondary measurement return circuit of the same kind, dispose redundant passageway of the same kind again and supply each measurement station sharing, save equipment and reduce area, and the functional configuration is nimble, not only testable, check direct current engineering secondary measurement system's measurement accuracy and response characteristic, still analyzable single component measures the deviation, the measurement system quality is unusual to HVDC control protection system's influence, in order to do counter-measure in advance, further improve the reliability of HVDC operation. The defects of the control protection device related to the measured system faults are found through testing before the system is put into operation, and then the defects are solved through an optimization strategy and the like, so that accidents possibly occurring on the site, such as direct current tripping and the like, caused by quality abnormity or non-ideal control protection response can be avoided. Even if the defect of the strategy of controlling the protection device to deal with the fault of the measurement system is not found before the direct current system is put into operation, the method can be applied to reappear the field working condition, analyze the reason and develop strategy optimization and improvement if the direct current trip caused by the fault of the measurement system is encountered in the actual direct current operation process.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (7)
1. A real-time simulation test platform of an electronic transformer measurement system is characterized by comprising a real-time simulator, one or more non-redundant channels, a redundant channel and a plurality of control protection devices; wherein,
a first output end of the real-time simulator is connected with an input end of the non-redundant channel, and a second output end of the real-time simulator is connected with an input end of the redundant channel;
the input end of each control protection device is connected with the output end of the non-redundant channel or the output end of the redundant channel.
2. The real-time simulation test platform of the electronic transformer measuring system according to claim 1, wherein the non-redundant channel comprises a first analog output board, n first resistor boxes, n first remote modules, and a first merging unit comprising n input terminals; the input end of the first analog output board card is connected with the first output end of the real-time simulator, the first analog output board card is provided with n output ends, each output end is correspondingly connected with the input end of one first resistor box, the output end of each first resistor box is connected with the input end of one first remote module, the output end of each first remote module is correspondingly connected with one input end of the first merging unit, and the output end of the first merging unit can be connected with the input end of each control protection device.
3. The real-time simulation test platform of the electronic transformer measurement system according to claim 2, wherein the redundant channel comprises a second analog output board card, m second resistor boxes, m second remote modules and a second merging unit comprising m input terminals; the input end of the second analog output board card is connected with the second output end of the real-time simulator, the second analog output board card is provided with m output ends, each output end is correspondingly connected with the input end of one second resistor box, the output end of each second resistor box is connected with the input end of one second far-end module, the output end of each second far-end module is correspondingly connected with one input end of the second merging unit, and the output end of the second merging unit can be connected with the input end of each control protection device.
4. The real-time simulation test platform of the electronic transformer measurement system according to claim 3, wherein an adder is disposed in the real-time simulator, and a second output terminal of the real-time simulator is connected to an input terminal of the second analog output board card through the adder.
5. The real-time simulation test platform of the electronic transformer measuring system according to claim 1, wherein the real-time simulation test platform of the electronic transformer measuring system further comprises a workstation, and an output end of the workstation is connected to an input end of the real-time simulator.
6. The real-time simulation test platform of the electronic transformer measuring system according to claim 3, wherein the control protection device has k input terminals, each input terminal is connected with the output terminal of the non-redundant channel or the output terminal of the redundant channel; wherein k is greater than the number of non-redundant lanes.
7. The real-time simulation test platform of the electronic transformer measuring system according to claim 6, wherein each input terminal of the control protection device is connected to the output terminal of the first merging unit or the output terminal of the second merging unit.
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| CN202021206862.7U CN213398901U (en) | 2020-06-24 | 2020-06-24 | Real-time simulation test platform of electronic transformer measurement system |
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