CN111983996A - Remote testing device, method and equipment of stability control system - Google Patents
Remote testing device, method and equipment of stability control system Download PDFInfo
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- CN111983996A CN111983996A CN202010888011.3A CN202010888011A CN111983996A CN 111983996 A CN111983996 A CN 111983996A CN 202010888011 A CN202010888011 A CN 202010888011A CN 111983996 A CN111983996 A CN 111983996A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
Abstract
The application discloses remote testing device, method and equipment of a stability control system, and the device comprises: the simulation test data output unit is used for receiving operation data fed back by the plant station test terminal, simulating according to the operation data, and transmitting the simulation data to the power system communication unit through the GOOSE, wherein the simulation data comprise analog phasor data and switching value data; after receiving the simulation data, the power system communication unit sends the simulation data to a plant station test terminal through the GOOSE; and the plant station test terminal performs reduction calculation on the analog phasor and performs digital-to-analog conversion on the switching value data, and then transmits the data to the stability control unit, and the stability control unit controls the plant station according to the analog phasor and the switching value data and feeds back control information containing a control strategy to the plant station test terminal. The technical problems that in the prior art, the field stability control system device software needs to be modified, a hardware communication link needs to be added, and modification is difficult are solved.
Description
Technical Field
The application relates to the technical field of power system safety control, in particular to a remote testing device, method and equipment of a stability control system.
Background
With the continuous expansion of the scale of modern power systems, the power grid structure is increasingly complex, the operation mode is flexible and changeable, and the problem of system stability is increasingly prominent. The importance of a stability control system is becoming more important with the increase of the complexity of the safety and stability control system (hereinafter referred to as "stability control system") as the second line of defense of the power system and the increasing of the system scale. Once the stable control system malfunctions or fails to operate, the accident influence is enlarged to cause unnecessary loss, and the power system is catastrophically damaged if the accident is not influenced.
At present, a stability control system forms a comprehensive verification system of a plurality of stages such as factory internal test, factory debugging, RTDS simulation test, system joint debugging and the like, and the reliability of the stability control system can be subjected to multiple verification through detailed debugging scheme design and test organization in each stage, so that the functions, design and criteria of the stability control system can be comprehensively and completely verified, and certain exploration and research are carried out on the standardization of control strategies and logic criteria. However, the existing stability control system test system still has imperfections, and the biggest characteristic is that the RTDS comprehensive test and the field debugging are mutually split, and the complete and comprehensive system test cannot be carried out on the actual stability control system on the field, so how to combine the field debugging requirements and characteristics, and furthest exert the advantages of the RTDS comprehensive test is a problem to be solved urgently by the current stability control system test. The main problem of the existing research results is that the coupling between the test system and the field operation system is too tight, the scheme design not only requires a new channel to be added for modifying software of the field device, but also needs to match corresponding data to a corresponding interval according to communication data issued by a main station, and for a large number of storage stability control devices on the field at present, device software modification and hardware communication link addition are required, so that the workload is huge, and great difficulty exists in comprehensive implementation.
Disclosure of Invention
The application provides a remote testing device, a remote testing method and remote testing equipment for a stability control system, and solves the problems that in the prior art, the field stability control system device software needs to be modified and a hardware communication link needs to be added, the workload is huge, and great difficulty exists in comprehensive implementation.
In view of the above, a first aspect of the present application provides a remote testing apparatus for a stability control system, where the method includes: the system comprises a simulation test data output unit, a power system communication unit, a station test terminal and a stability control unit;
the simulation test data output unit is used for receiving operation data fed back by the plant station test terminal, simulating according to the operation data, and transmitting simulation data to the power system communication unit through the GOOSE, wherein the simulation data comprise analog phasor data and switching value data;
the power system communication unit is used for receiving the simulation data from the simulation test data output unit and sending the simulation data to the plant station test terminal through the GOOSE; the simulation test data output unit is used for receiving the operation data from each plant station test terminal and transmitting the operation data to the simulation test data output unit;
the plant station test terminal is used for receiving the simulation data, carrying out reduction calculation on the analog phasor and carrying out digital-to-analog conversion on the switching value data, and then transmitting the data to the stability control unit; the power system communication unit is also used for transmitting the collected operation data to the power system communication unit;
the stability control unit is used for controlling the plant station according to the analog phasor and the switching value data and feeding back the control information containing the control strategy to the plant station test terminal; and the stability control unit is connected with the plant station test terminal through a cable.
Optionally, the simulation test data output unit further includes an RTDS peripheral board card unit and a switch unit;
the RTDS peripheral board card unit is used for simulating according to the operation data fed back by the plant station test terminal and outputting a simulation result;
the switch unit is used for summarizing and packaging the simulation data corresponding to the plurality of plant station test terminals, and transmitting the packaged simulation data to the power system communication unit through the GOOSE.
Optionally, the power system communication unit further includes an SDH device and a wide area transmission backbone network;
the SDH equipment is communicated with the simulation test data output unit through GOOSE and is also communicated with the wide area transmission backbone network through optical fibers;
and each plant station test terminal is respectively communicated with the SDH equipment through GOOSE, and the plant station test terminals correspond to the SDH equipment one by one.
Optionally, the minimum time interval for sending the simulation data by the simulation test data output unit is 20 ms.
Optionally, the plant station test terminal is further configured to obtain the simulation data including the corresponding plant station identifier from the simulation data input by the power system communication unit, where the simulation data includes simulation results of a plurality of plant stations.
A second aspect of the present application provides a remote testing method for a stability control system, the method including:
acquiring operation data fed back by a plurality of plant station test terminals, and simulating according to the operation data;
transmitting simulation data corresponding to the plurality of simulated plant station test terminals to the plant station test terminals;
and the plant station test terminal carries out reduction calculation on the analog phasor in the simulation data and carries out digital-to-analog conversion on the switching value data, and then transmits the data to the stability control unit for carrying out stability control on the plant station.
Optionally, the transmitting the simulated data corresponding to the plurality of simulated plant test terminals to the plant test terminal specifically includes:
summarizing and packaging simulation data corresponding to the plurality of simulated plant station test terminals;
transmitting the collected and packaged simulation data to a wide area network through GOOSE;
and transmitting the data to a plurality of plant station test terminals through a wide area network.
Optionally, the transmitting to the plurality of plant station test terminals through the wide area network further includes:
and the plant station test terminal acquires the simulation data containing the local plant station identification from the simulation data.
Optionally, the simulated data corresponding to the plurality of plant test terminals after simulation is transmitted to the plant test terminals, and the minimum time interval for sending the simulated data is 20 ms.
A third aspect of the present application provides a remote test apparatus of a stability control system, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the steps of the remote testing method of the stability control system according to the first aspect.
According to the technical scheme, the method has the following advantages:
the application provides a remote testing device of a stability control system, which comprises a simulation test data output unit, an electric power system communication unit, a station testing terminal and a stability control unit; the simulation test data output unit is used for receiving operation data fed back by the plant station test terminal, simulating according to the operation data, and transmitting the simulation data to the power system communication unit through the GOOSE, wherein the simulation data comprise analog phasor data and switching value data; the power system communication unit is used for receiving the simulation data from the simulation test data output unit and sending the simulation data to the plant station test terminal through the GOOSE; the simulation test data output unit is used for receiving the operation data from the plant station test terminals and transmitting the operation data to the simulation test data output unit; the plant station test terminal is used for receiving the simulation data, carrying out reduction calculation on the analog phasor and carrying out digital-to-analog conversion on the switching value data, and then transmitting the data to the stability control unit; the power system communication unit is also used for transmitting the collected operation data to the power system communication unit; the stability control unit is used for controlling the plant station according to the analog phasor and switching value data and feeding back control information containing a control strategy to the plant station test terminal; wherein the stability control unit is connected with the plant station test terminal through a cable.
According to the method, the test system configuration is simplified and transfer links are reduced by directly transmitting the GOOSE signals between the simulation test data output unit and the power system communication unit and between the power system communication unit and the station test terminal. The core content of the GOOSE signal message can be flexibly and freely defined by a user, not only can state information be transmitted, but also analog quantity information can be transmitted, and information of a remote test of the stability control system can be transmitted.
Drawings
Fig. 1 is a device structure diagram of an embodiment of a remote testing device of a stability control system according to the present application;
fig. 2 is a device structure diagram of a remote testing device of a stability control system according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a method of an embodiment of a remote testing method of a stability control system according to the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of an embodiment of a remote testing apparatus of a stability control system according to the present application, as shown in fig. 1, specifically including:
the simulation test data output unit 101 is configured to receive operation data fed back by a plant station test terminal, perform simulation according to the operation data, and transmit simulation data to the power system communication unit through GOOSE (GOOSE is a generic object-oriented substation event, and is a fast message transmission mechanism in IEC61850 and used for transmitting important real-time signals between IEDs in a substation), where the simulation data includes analog phasor and switching value data.
The simulation test data output unit can be used for receiving operation data fed back by the plant station test terminal, wherein the operation data comprises trip signals of the plant station and other fault data; and control data from a plant station test terminal can be received, wherein the control data comprise centralized or scattered control measures such as generator tripping, load shedding and the like adopted by the stability control unit when the power grid has a serious fault. After the simulation test data output unit receives the operation data and the control data of one plant station, a simulation test is carried out according to the acquired data to obtain analog phasor and switching value data for carrying out remote test on the stability control unit.
It should be noted that, because the requirement of the power grid on the real-time performance of simulation and control is high in order to avoid the risk of failure, the application transmits simulation data to the power system communication unit through the GOOSE, on one hand, the simulation data are transmitted to the corresponding plant station through low delay to be controlled in time, and in addition, the GOOSE can also transmit analog phasor and switching value data at the same time, so that unnecessary conversion links are avoided.
The simulation test data output unit 101 includes an RTDS peripheral board unit 1011 and a switch unit 1012.
The RTDS peripheral board card unit 1011 is configured to perform simulation according to the operation data fed back by the station test terminal and output a simulation result.
It should be noted that the RTDS peripheral board card unit includes a plurality of peripheral board cards GTNET of the RTDS system; simulating in an RTDS real-time simulation system through the acquired operation data fed back by the plant test terminal, and outputting analog phasor and switching value data through a plurality of parallel GTNET board cards of the RTDS real-time simulation system.
The switch unit 1012 is configured to collect and package simulation data corresponding to the plurality of plant test terminals, and transmit the packaged simulation data to the power system communication unit through GOOSE; and also for receiving control information input from the power system communication unit.
It should be noted that the switch unit 1012 can pack simulation data corresponding to a plurality of plant test terminals, and transmit the simulation data to SDH equipment in a laboratory through GOOSE.
The power system communication unit is used for receiving the simulation data from the simulation test data output unit and sending the simulation data to the plant station test terminal through the GOOSE; and the simulation test data output unit is also used for receiving the operation data from each plant station test terminal and transmitting the operation data to the simulation test data output unit.
It should be noted that, in the present application, the power system communication unit may be a wide area network formed by SDH equipment and a wide area transmission backbone network, and the stability control system remote test testing system can construct a wide area inter-layer communication network by using a networking mode of the GOOSE, the SDH equipment, and the wide area transmission backbone network, so as to create conditions for large-capacity real-time information interaction of inter-station information.
The plant station test terminal is used for receiving the simulation data, carrying out reduction calculation on the analog phasor and carrying out digital-to-analog conversion on the switching value data, and then transmitting the data to the stability control unit; and the power system is also used for transmitting the collected operation data to the power system communication unit.
It should be noted that the plant station test terminal can receive the analog quantity transmitted by the GTNET board card of the RTDS system through the virtual terminal configuration, and output a continuous analog quantity signal to the stability control unit through phasor reduction calculation and D/a conversion; in addition, for the received switching value signal, a contact I/O signal is output to the stable control unit, and then the signal transmission between the plant station test terminal and the stable control unit can be completed; the station test terminal can also receive control data sent by the stability control unit, send a GOOSE signal to the power system communication unit by the control data and feed back the GOOSE signal to the RTDS system.
The stability control unit is used for controlling the plant station according to the analog phasor and switching value data and feeding back control information containing a control strategy to the plant station test terminal; wherein the stability control unit is connected with the plant station test terminal through a cable.
It should be noted that, because the stability control unit is connected to the plant test terminal through a cable, only analog signals can be transmitted between the stability control unit and the plant test terminal, that is, continuous analog signals are output to the stability control unit through phasor reduction calculation.
According to the method, the test system configuration is simplified and transfer links are reduced by directly transmitting the GOOSE signals between the simulation test data output unit and the power system communication unit and between the power system communication unit and the station test terminal. The core content of the GOOSE signal message can be flexibly and freely defined by a user, not only can state information be transmitted, but also analog quantity information can be transmitted, and information of a remote test of the stability control system can be transmitted.
The present application further provides a specific embodiment of a remote testing device of a stability control system, as shown in fig. 2, where fig. 2 includes:
the system comprises a simulation test data output unit consisting of an external board card GTNET and a switch of an RTDS system, a wide area network power system communication unit consisting of SDH equipment and a wide area backbone network, plant station test terminals corresponding to the SDH equipment one by one, and stable control devices (namely the stable control unit) corresponding to the plant station test units.
The switch is communicated with the SDH equipment, and the SDH equipment is communicated with the plant station test terminal through GOOSE signals; and for the received switching value signal, outputting a node I/O signal to the stability control unit, and finishing the signal transmission of the plant station test terminal and the stability control unit.
Specifically, the simulation test data output unit in the application can utilize a plurality of GTNET board cards connected in parallel in an RTDS real-time simulation system to output GOOSE signals including analog phasor and switching value data, and the GOOSE signals are collected by a switch and then packed and input into SDH equipment in a laboratory; the simulation test data output unit can also receive control information of the stability control device, such as cutting load information and the like, returned by each plant station test terminal, and the operation data of the plant station is fed back to the RTDS test system.
In the application, the switch and the SDH equipment, the SDH equipment and the plant station test terminal communicate through the GOOSE signal, the GOOSE communication adopts an Ethernet multicast communication technology, the core content of the GOOSE message can be flexibly and freely defined by a user, not only can state information (such as 0/1 information) be transmitted, but also analog quantity information can be transmitted, and meanwhile, the information of the remote test of the stability control device can be transmitted. The communication mode of the GOOSE signal is different from the mode that the process layer in the station can only transmit switching value information, and because analog quantity data collected in real time for transmission between stations continuously changes, namely one-time event sending is triggered in the minimum sampling interval (such as 0.833ms), the current communication network cannot meet the requirement of large-quantity rapid data transmission; especially, when a system fails and a control strategy needs to be adopted, the requirement on the real-time performance of the transmitted semaphore is higher.
In order to control the transmission capacity of the system, control the transmitted data volume and guarantee certain test precision, the method comprises the following steps:
(1) when the system is in normal operation or three-phase symmetrical fault, each group of three-phase voltage and three-phase current only transmits the amplitude E and the phase angle phi of the phase A, and the additional information of the ABC phases is 0; after receiving the data, the receiving end converts the data into analog values of three-phase voltage and current according to the received phasor values at fixed sampling intervals and outputs the analog values;
(2) when an asymmetric fault occurs, each group of three-phase voltage and three-phase current only transmits the amplitude E and the phase angle phi of a non-fault phase, and the additional information of ABC three phases is shown in Table 1; and the receiving end judges the non-fault phase according to the received phasor values and the additional information after receiving the data, converts the non-fault phase into the instantaneous values of the three-phase voltage and the three-phase current according to the fixed sampling interval, superposes typical instantaneous fault waveforms according to the fault types in the additional information and outputs the final three-phase voltage and current analog quantity.
Table 1 fault type additional information
| Type of failure | Additional information | Type of failure | Additional information |
| Single instant phase A | 0x0001 | A phase single permanent magnet | 0x0101 |
| Single phase of B phase | 0x0002 | B phase single permanent magnet | 0x0202 |
| Single phase of C | 0x0004 | C phase single permanent magnet | 0x0404 |
| Short circuit of AB phase to ground | 0x0003 | AB interphase short circuit | 0x0030 |
| Short circuit of AC phase to ground | 0x0005 | AC phase short circuit | 0x0050 |
| BC phase ground short circuit | 0x0006 | BC interphase short circuit | 0x0060 |
For example:
(1) when in normal operation, the sending end sends phasor E of A phaseaAnd phiaThen its additional information is 0; the receiving end normally outputs A, B, C three-phase analog quantities (each with a difference of 120 °) according to the conventional conversion method of phasor and sinusoidal quantity.
(2) When A phase single moment occurs, the sending end sends a phasor E with the switching being B phasebAnd phibThe transmitted additional information is 0x 0001; after receiving, the receiving end firstly detects the additional information, and then outputs as an A phase according to the amplitude of the A phase at the previous point and typical analog quantity waveforms Eaf and φ af when phasors Ea and φ a generate faults; the B phase and the C phase are converted into analog quantity output from Eb and phi B according to the conventional conversion method.
The transmitted phasor is more stable than the transmitted analog instantaneous value. In addition, in order to control the communication bandwidth utilization rate, a method for controlling the minimum transmission interval T1 is adopted, and the minimum transmission interval T1 is generally set to be 20ms of one cycle, so that the reliability of communication can be guaranteed on the premise that the precision of the test is not influenced.
Power system communication unit:
the mode of combining GOOSE and the wide area network for networking is different from the mode of GOOSE networking in the intelligent substation, the GOOSE networking of the wide area network is required to be based on the existing communication network topology, therefore, data encapsulation and communication are required to be carried out between all stations of the stability control system remote test system through the minimum exclusive pipeline, and the minimum exclusive pipeline capacity is required to be determined according to the bandwidth of the communication network. In each application, GOOSE message information sent to all stations can be encapsulated in an exclusive pipeline and transmitted to all stations in the device through the existing communication route; after the station test terminal receives the GOOSE message information containing the simulation data, the simulation data only containing the local station identifier can be searched from the GOOSE message information, so that the multicast communication function of one-transmission and multi-reception is realized.
In a specific embodiment, the VLAN setting manner shown in table 2 may be adopted: the GTNET peripheral board card of the RTDS is used as a GOOSE multicast sending end, and the test terminal of each tested plant station is used as a receiving end, so that a typical setting method of the VLANID is shown in a table 2, namely, the VLAN of the GTNET is related to each station, and the test terminal of the tested plant station is only related to the GTNET, so that communication isolation is effectively realized. The vlan id is set to be included in a GOOSE message for inter-station communication to control the transmission direction and flow rate of communication data.
Table 2-1 VLAN partitioning of SDH
| Plant station | VLANID | VLAN setup |
| GTNET of RTDS | 10 | 10-1,10-2,10-3,10-4,10-5 |
| Station 1 test terminal | 1 | 1-10 |
| Station 2 test terminal | 2 | 2-10 |
| Station 3 test terminal | 3 | 3-10 |
| Station 4 test terminal | 4 | 4-10 |
| Station 5 test terminal | 5 | 5-10 |
Station test terminal:
in the method, a station test terminal receives analog quantity transmitted by a GTNET board card of an RTDS system through virtual terminal configuration, and outputs continuous analog quantity signals to a corresponding stability control device through phasor reduction calculation and D/A conversion; the received switching value signal is transmitted to a stable control device through an output node I/O signal; and receiving the action signal sent by the stability control device, sending a GOOSE signal to the wide area network communication network, and feeding back the GOOSE signal to the RTDS system.
The output of the plant station test terminal can be configured through a liquid crystal interface or a debugging tool, and signals such as analog quantity output, switching quantity input and the like of the plant station test terminal are in one-to-one correspondence according to the actual configuration of the field stability control device.
The measured stability control device:
the measured stability control device is composed of an actual stability control system installed on the site, information transmission of tide, operation states, element faults and the like of a plurality of elements in the system is achieved among the stability control devices of the plant stations through a power system communication network, and when a power grid has a serious fault, centralized or scattered load cutting and load shedding measures are adopted to guarantee safe and stable operation of the power system.
The plant station test terminal system and the tested stability control device are in one-to-one correspondence and are physically connected through cable signals, so that complete decoupling of the test system and the field operation system is guaranteed, mutual interference between test and operation is guaranteed, and debugging and operation risks of the stability control system are reduced.
The above is an embodiment of the apparatus of the present application, and the present application further provides an embodiment of a remote testing method of a stability control system, as shown in fig. 3, where fig. 3 includes:
acquiring operation data fed back by a plurality of plant station test terminals, and simulating according to the operation data;
transmitting simulation data corresponding to the plurality of simulated plant station test terminals to the plant station test terminals;
and the plant station test terminal carries out reduction calculation on the analog phasor in the simulation data and carries out digital-to-analog conversion on the switching value data, and then transmits the data to the stability control unit for carrying out stability control on the plant station.
In a specific implementation manner, transmitting simulation data corresponding to a plurality of simulated plant test terminals to the plant test terminals specifically includes:
summarizing and packaging simulation data corresponding to the simulated plant station test terminals;
transmitting the collected and packaged simulation data to a wide area network through GOOSE;
and then transmitted to a plurality of plant station test terminals through a wide area network.
In a specific embodiment, after the transmission to the plurality of factory test terminals via the wide area network, the method further includes:
and the plant station test terminal acquires the simulation data containing the local plant station identifier from the simulation data.
The application also provides a remote test device of the stability control system, which comprises a processor and a memory:
the memory is used for storing the program codes and transmitting the program codes to the processor; the processor is used for executing the embodiment of the remote testing method of the stability control system according to the instructions in the program codes.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The terms "comprises," "comprising," and "having," and any variations thereof, in this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 in the embodiments of the present application.
Claims (10)
1. A remote testing device of a stability control system is characterized by comprising: the system comprises a simulation test data output unit, a power system communication unit, a station test terminal and a stability control unit;
the simulation test data output unit is used for receiving operation data fed back by the plant station test terminal, simulating according to the operation data, and transmitting simulation data to the power system communication unit through the GOOSE, wherein the simulation data comprise analog phasor data and switching value data;
the power system communication unit is used for receiving the simulation data from the simulation test data output unit and sending the simulation data to the plant station test terminal through the GOOSE; the simulation test data output unit is used for receiving the operation data from each plant station test terminal and transmitting the operation data to the simulation test data output unit;
the plant station test terminal is used for receiving the simulation data, carrying out reduction calculation on the analog phasor and carrying out digital-to-analog conversion on the switching value data, and then transmitting the data to the stability control unit; the power system communication unit is also used for transmitting the collected operation data to the power system communication unit;
the stability control unit is used for controlling the plant station according to the analog phasor and the switching value data and feeding back the control information containing the control strategy to the plant station test terminal; and the stability control unit is connected with the plant station test terminal through a cable.
2. The remote testing device of the stability control system according to claim 1, wherein the simulation test data output unit further comprises an RTDS peripheral board card unit and a switch unit;
the RTDS peripheral board card unit is used for simulating according to the operation data fed back by the plant station test terminal and outputting a simulation result;
the switch unit is used for summarizing and packaging the simulation data corresponding to the plurality of plant station test terminals, and transmitting the packaged simulation data to the power system communication unit through the GOOSE.
3. The remote testing device of the stability control system according to claim 1, wherein the power system communication unit further comprises an SDH device and a wide area transmission backbone;
the SDH equipment is communicated with the simulation test data output unit through GOOSE and is also communicated with the wide area transmission backbone network through optical fibers;
and each plant station test terminal is respectively communicated with the SDH equipment through GOOSE, and the plant station test terminals correspond to the SDH equipment one by one.
4. The remote testing apparatus of the stability control system according to claim 1, wherein the minimum time interval for the simulation test data output unit to transmit the simulation data is 20 ms.
5. The remote testing device of the stability control system according to claim 1, wherein the plant station testing terminal is further configured to obtain the simulation data including the plant station identifier from the simulation data input by the power system communication unit, and the simulation data includes simulation results of a plurality of plant stations.
6. A remote test method of a stability control system is characterized by comprising the following steps:
acquiring operation data fed back by a plurality of plant station test terminals, and simulating according to the operation data;
transmitting simulation data corresponding to the plurality of simulated plant station test terminals to the plant station test terminals;
and the plant station test terminal carries out reduction calculation on the analog phasor in the simulation data and carries out digital-to-analog conversion on the switching value data, and then transmits the data to the stability control unit for carrying out stability control on the plant station.
7. The remote testing method of the stability control system according to claim 6, wherein the step of transmitting the simulated data corresponding to the plurality of plant test terminals to the plant test terminals comprises:
summarizing and packaging simulation data corresponding to the plurality of simulated plant station test terminals;
transmitting the collected and packaged simulation data to a wide area network through GOOSE;
and transmitting the data to a plurality of plant station test terminals through a wide area network.
8. The remote testing method of the stability control system according to claim 7, further comprising, after the transmitting to the plurality of plant test terminals via the wide area network, the following steps:
and the plant station test terminal acquires the simulation data containing the local plant station identification from the simulation data.
9. The remote testing method of the stability control system according to claim 6, wherein the simulated data corresponding to the plurality of plant test terminals is transmitted to the plant test terminals, and the minimum time interval for sending the simulated data is 20 ms.
10. A remote test apparatus for a stability control system, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor; the processor is configured to execute the remote testing method of the stability control system according to any one of claims 6 to 9 according to instructions in the program code.
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