A simulation device for stabilizing inter-station data

Abstract

The present invention discloses a simulation device for stabilizing and controlling inter-station data, including a 100M optical fiber interface unit, a 2M electrical interface unit, a 2M optical interface unit and an interface management unit. When verifying the system logic of the stabilizing and controlling device, the present invention provides a variety of means to simulate and simulate inter-station information. The inter-station information and the tested stabilizing and controlling device can be directly simulated through a 100M optical fiber port to form a simplest test system. Multiple devices can also simulate the inter-station information of all stations through a 2M electrical port or a 2M optical port and merge them into 100M inter-station information through a MUX device to form a test system. It can also simulate only the information of a certain station, and other stations use the information of actually normally operating stations to merge them into 100M inter-station information through a MUX device to form a test system. The present invention effectively solves the defect problem of lack of inter-station information coordination in single device testing and the complexity of building a system for testing, simplifies testing, saves manpower and material resources, and is particularly suitable for logical verification of inter-station strategies in the research and development stage.

Description

Technical Field

[0001] The invention belongs to the field of power systems, and in particular relates to a testing technology for stable control protection. Background Art

[0002] In recent years, with the expansion of power grid scale and the development of AC / DC transmission and distribution technology, the application of stability control systems has become more and more extensive, and the requirements for strategy verification of stability control systems have become higher and higher. However, the stability control systems are distributed over a wide area and there are many plants and stations. The logical functions of the stability control devices at each station are complex, and the stability control strategies between plants and stations need to be coordinated and closely related. This brings great difficulties to on-site device inspection, strategy inspection, and transmission testing.

[0003] At present, the testing of stabilization and control devices is divided into single-device strategy testing and system-level strategy testing. For the testing of single devices, testers are often used to simulate components with strong correlation to faults, and only partial strategy verification tests are performed on the functions of this station. There is often no way to test the strategy logic functions of coordination between stations. Some manufacturers use manual setting in stabilization and control devices to shield the communication information between other stations and simplify the test. This obviously cannot truly verify the complete logic functions.

[0004] Therefore, for complex system-level strategy logic verification, RTDS / BPA / PSASP and other technologies are generally used to build simulation models or dynamic model systems, and distributed testing technology is used for verification. The communication information between stations comes from the stabilization and control devices that are actually running at each station, which generate real inter-station information based on the faults collected by each station. The verification of the stability and control strategy of the entire system is definitely accurate and effective. However, the biggest disadvantage of this method is that it is relatively complicated to build a test environment. It requires real stabilization and control devices and multiple test instruments for each station. There are many coordination links and the test system is relatively complex. Therefore, this test method is not suitable for situations where a single device is required for logic verification of coordination between stations, such as testing of strategy logic development in the R&D stage. Summary of the invention

[0005] In order to solve the technical problems mentioned in the above background technology, the present invention aims to propose a simulation device for stabilization and control station data, so as to solve the problem that when verifying the stabilization and control system strategy, it is only possible to test a complex test system through dynamic modeling and simulation, and there is a lack of inter-station strategy logic verification means for individual stabilization and control devices.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention is:

[0007] A simulation device for stabilizing inter-station data, comprising a 100M optical fiber interface unit, a 2M electrical interface unit, a 2M optical interface unit and an interface management unit;

[0008] The 100M fiber optic interface unit includes two channels, each of which includes a receiving interface and a sending interface. The unit has two communication connection modes:

[0009] The first type: two channels are directly connected to the 100M optical fiber inter-station unit of the tested stable control host. The sending interface of each channel directly simulates the inter-station data of N stations for system strategy verification of the tested stable control host. The receiving interface of each channel receives the feedback inter-station information sent by the tested stable control host for verifying the strategy logic, where N is a set natural number.

[0010] The second type: the receiving interface of one channel receives the inter-station data sent by the MUX communication device, so as to monitor, record and analyze the data of the MUX communication device, and at the same time forwards the data of the MUX communication device through the sending interface of the channel. At this time, the sending interface is connected to the 100M optical fiber inter-station unit of the tested stable control host; the receiving interface of another channel receives the feedback inter-station information sent by the tested stable control host for verifying the strategy logic, and at the same time forwards the inter-station information of the tested stable control host to the MUX communication device through the sending interface of the channel;

[0011] The 2M electrical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. Each channel is connected to the corresponding electrical interface of the MUX communication device, and can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, and are used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system;

[0012] The 2M optical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. Each channel is connected to the corresponding optical interface of the MUX communication device, and can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, and are used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system;

[0013] The interface management unit is responsible for the communication control of the human-machine interface, as well as the communication control and data interaction of the 100M optical fiber interface unit, the 2M electrical interface unit, and the 2M optical interface unit.

[0014] According to a preferred solution of the above technical solution, the combined inter-station data is directly simulated at the sending interface of the 100M optical fiber interface unit, and the inter-station data sent by the tested stable control host is monitored, recorded and analyzed through the receiving interface to verify the action results of the tested stable control host.

[0015] Based on the preferred solution of the above technical solution, the inter-station data simulated at the sending interface of the 100M optical fiber interface unit includes normal data and abnormal data, and the time of sending the inter-station data, the time of change, the number of changes, the content of the data and the format of the data can all be set.

[0016] According to the preferred solution of the above technical solution, the data of a single station is simulated through the sending interface of the 2M electrical interface unit or the 2M optical interface unit, connected to the MUX communication device, and combined with other 2M electrical interfaces or 2M optical interfaces from the actual system to form 100M inter-station data, providing inter-station test data for the tested stable control host.

[0017] Based on the preferred scheme of the above technical scheme, the data of a single station simulated at the sending interface of the 2M electrical interface unit or the 2M optical interface unit includes normal data and abnormal data, and the time of data transmission between stations, the time of change, the number of changes, the content of the data and the format of the data can all be set.

[0018] Based on the preferred scheme of the above technical scheme, at the receiving interface of the 2M electrical interface unit or the 2M optical interface unit, the inter-station data after splitting by the MUX communication device is monitored, recorded and analyzed, and the inter-station communication data of the tested stable control host after passing through the MUX communication device is verified to provide multi-link inspection of the system.

[0019] Based on the preferred solution of the above technical solution, the interface management unit adopts dual ARM cores, one ARM core is responsible for the communication control of the human-machine interface, and the other ARM core is responsible for the communication control and data interaction of the 100M fiber optic interface unit, 2M electrical interface unit, and 2M optical interface unit.

[0020] Based on the preferred solution of the above technical solution, the underlying coding and decoding of the sending interface and the receiving interface of the 100M optical fiber interface unit, the 2M electrical interface unit and the 2M optical interface unit adopts FPGA.

[0021] The beneficial effects brought by adopting the above technical solution are:

[0022] Compared with the prior art, the present invention provides a variety of means to simulate and simulate inter-station information when verifying the system logic of the stabilization and control device. It can directly simulate the inter-station information and the tested stabilization and control device through a 100M optical fiber port to form a simplest test system. This method does not require the coordination of too many devices and is particularly suitable for strategy testing in the research and development stage. Multiple devices of the present invention can also simulate the inter-station information of all stations through a 2M electrical port or a 2M optical port and merge them into a 100M inter-station information test system through a MUX communication device. It is also possible to simulate only the information of a certain station, and use the information of other stations that are actually operating normally to merge them into a 100M inter-station information test system through a MUX communication device.

[0023] The test of the present invention covers the MUX communication device, and verifies the communication function of the system while checking the strategy, so the test covers a wider range; the MUX communication device can be connected in series, and the communication message of the MUX communication device can be transparently forwarded, while providing monitoring, recording and analysis of the forwarded message, and can provide auxiliary means to troubleshoot problems when the on-site communication conditions are not good; it can be used when verifying the strategy of a separate stabilization device, and can also be used when verifying the system strategy, which effectively solves the defect problem of lack of inter-station information coordination in single device testing and the complexity of setting up a system for testing; only a single or a few devices of the present invention can be used to perform inter-station logic testing with multiple means and multiple interfaces, which simplifies the test and saves a lot of manpower and material resources, and is particularly suitable for the logic verification of inter-station strategies in the research and development stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a composition diagram of the device of the present invention;

[0025] Figure 2 This is a schematic diagram of the information between stations of the system directly using a 100M optical fiber port simulation;

[0026] Figure 3 It is a schematic diagram of a test system composed of a 100M optical fiber port and a MUX communication device in the present invention;

[0027] Figure 4 It is a schematic diagram of a test system composed of the present invention by simulating inter-station information through a 2M electrical interface and combining actual operating station information and a MUX communication device;

[0028] Figure 5 The present invention simulates the inter-station information through the 2M optical interface and combines the actual operation station information and the MUX communication device to form a test system. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] The present invention designs a simulation device for stabilizing inter-station data. Figure 1 As shown, it includes a 100M fiber optic interface unit, a 2M electrical interface unit, a 2M optical interface unit and an interface management unit.

[0031] The 100M fiber optic interface unit includes two channels, each of which includes a receiving interface and a sending interface. The two channels are directly connected to the 100M fiber optic station-to-station unit of the tested stabilization and control host. The sending interface of each channel directly simulates the station-to-station data of N stations for system strategy verification of the tested stabilization and control host. The receiving interface of each channel receives the feedback station-to-station information sent by the tested stabilization and control host for verifying the strategy logic, where N is a set natural number. The transceiver interface uses FPGA to implement the underlying encoding and decoding. The receiving interface decodes the feedback station-to-station information sent by the tested stabilization and control host through the FPGA at the physical layer, and then sends it to the interface management unit for verifying the strategy logic. The test method is as follows: Figure 2 shown.

[0032] The 100M optical fiber interface unit has another test method, such as Figure 3 As shown, the receiving interface of one channel receives the inter-station data sent by the MUX communication device, so as to monitor, record and analyze the data of the MUX communication device, and at the same time forwards the data of the MUX communication device through the sending interface of the channel. At this time, the sending interface is connected to the 100M optical fiber inter-station unit of the tested stable control host; the receiving interface of another channel receives the feedback inter-station information sent by the tested stable control host, which is used to verify the strategy logic, and at the same time forwards the inter-station information of the tested stable control host to the MUX communication device through the sending interface of the channel.

[0033] The 2M electrical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. The bottom layer codec uses FPGA. Each channel is connected to the corresponding electrical interface of the MUX communication device, which can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, which is used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system. The test method is as follows Figure 4 shown.

[0034] The 2M optical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. The bottom layer codec uses FPGA. Each channel is connected to the corresponding optical interface of the MUX communication device, which can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, which is used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system. The test method is as follows Figure 5 shown.

[0035] The interface management unit is responsible for the communication control of the human-machine interface, as well as the communication control and data interaction of the 100M optical fiber interface unit, the 2M electrical interface unit, and the 2M optical interface unit.

[0036] In this embodiment, preferably, the combined inter-station data is directly simulated at the sending interface of the 100M optical fiber interface unit, and the inter-station data sent by the tested stable control host is monitored, recorded and analyzed through the receiving interface to verify the action result of the tested stable control host. The inter-station data simulated at the sending interface of the 100M optical fiber interface unit includes normal data and abnormal data, and the time of sending the inter-station data, the time of change, the number of changes, the content of the data and the format of the data can all be set to cooperate with the system failure to synchronize and verify the policy logic of the stable control host. The set control data is obtained from the human-computer interaction interface through the interface management unit. According to these control data, communication messages for normal policy verification are generated, and abnormal communication messages can also be generated to cooperate with the system failure to synchronize and verify the policy logic of the stable control host. At the same time, the inter-station data sent by the stable control host is monitored, recorded and analyzed through the 100M optical fiber receiving interface to verify the action result of the stable control host.

[0037] In this embodiment, preferably, the data of a single station is simulated through the sending interface of the 2M electrical interface unit or the 2M optical interface unit, connected to the MUX communication device, and combined with other 2M electrical interfaces or 2M optical interfaces from the actual system to form 100M inter-station data, providing inter-station test data for the tested stable control host. The data of a single station simulated at the sending interface of the 2M electrical interface unit or the 2M optical interface unit includes normal data and abnormal data, and the time of sending the inter-station data, the time of change, the number of changes, the content of the data and the format of the data can all be set to cooperate with the policy logic of the system fault synchronization verification stable control host, and can also be used to verify the communication capability of the MUX communication device. At the receiving interface of the 2M electrical interface unit or the 2M optical interface unit, the inter-station data after the MUX communication device is split is monitored, recorded and analyzed, and the inter-station communication data of the tested stable control host after passing through the MUX communication device is verified, providing system multi-link verification.

[0038] In this embodiment, preferably, the device is implemented using a dual-core ARM+FPGA solution, one ARM core runs the operating system, the interface management unit runs on this ARM core, and is responsible for the control interaction of the external human-machine interface. The other ARM core is a real-time control core, which uses a bare core operation mode and is responsible for the management and control of the application layer data of the 2M electrical interface unit, the 2M optical interface unit, and the 100M optical fiber interface unit.

[0039] The embodiments are only for illustrating the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A simulation device for stabilizing inter-station data, characterized in that: It includes 100M fiber optic interface unit, 2M electrical interface unit, 2M optical interface unit and interface management unit; The 100M fiber optic interface unit includes two channels, each of which includes a receiving interface and a sending interface. The unit has two communication connection modes: The first type: two channels are directly connected to the 100M optical fiber inter-station unit of the tested stable control host. The sending interface of each channel directly simulates the inter-station data of N stations for system strategy verification of the tested stable control host. The receiving interface of each channel receives the feedback inter-station information sent by the tested stable control host for verifying the strategy logic, where N is a set natural number. The second type: the receiving interface of one channel receives the inter-station data sent by the MUX communication device, so as to monitor, record and analyze the data of the MUX communication device, and at the same time forwards the data of the MUX communication device through the sending interface of the channel. At this time, the sending interface is connected to the 100M optical fiber inter-station unit of the tested stable control host; the receiving interface of another channel receives the feedback inter-station information sent by the tested stable control host for verifying the strategy logic, and at the same time forwards the inter-station information of the tested stable control host to the MUX communication device through the sending interface of the channel; The 2M electrical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. Each channel is connected to the corresponding electrical interface of the MUX communication device, and can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, and are used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system; The 2M optical interface unit includes two channels, each of which includes a receiving interface and a transmitting interface. Each channel is connected to the corresponding optical interface of the MUX communication device, and can simulate the inter-station data of a certain station in HDLC format. The two channels communicate with the 100M optical fiber inter-station unit of the tested stable control host through the MUX communication device, and are used for system strategy verification of the tested stable control host. At this time, part of the test data of the tested stable control host comes from the actual system, and the other part comes from the simulation system; The interface management unit is responsible for the communication control of the human-machine interface, as well as the communication control and data interaction of the 100M optical fiber interface unit, the 2M electrical interface unit, and the 2M optical interface unit.

2. The simulation device for stabilizing inter-station data according to claim 1, characterized in that: The combined inter-station data is directly simulated at the sending interface of the 100M optical fiber interface unit, and the inter-station data sent by the tested stable control host is monitored, recorded and analyzed through the receiving interface to verify the action result of the tested stable control host.

3. The simulation device for stabilizing inter-station data according to claim 2, characterized in that: The inter-station data simulated at the sending interface of the 100M optical fiber interface unit includes normal data and abnormal data, and the time of sending the inter-station data, the time of change, the number of changes, the content of the data and the format of the data can all be set.

4. The simulation device for stabilizing inter-station data according to claim 1, characterized in that: The data of a single station is simulated through the sending interface of the 2M electrical interface unit or the 2M optical interface unit, accessed to the MUX communication device, and combined with other 2M electrical interfaces or 2M optical interfaces from the actual system to form 100M inter-station data, providing inter-station test data for the tested stable control host.

5. The simulation device for stabilizing inter-station data according to claim 4, characterized in that: The data of a single station simulated at the sending interface of the 2M electrical interface unit or the 2M optical interface unit includes normal data and abnormal data, and the time of data transmission between stations, the time of change, the number of changes, the content of the data and the format of the data can all be set.

6. The simulation device for stabilizing inter-station data according to claim 1, characterized in that: At the receiving interface of the 2M electrical interface unit or the 2M optical interface unit, the inter-station data after being split by the MUX communication device is monitored, recorded and analyzed, and the inter-station communication data of the tested stable control host after passing through the MUX communication device is verified to provide multi-link inspection of the system.

7. The simulation device for stabilizing inter-station data according to claim 1, characterized in that: The interface management unit adopts dual ARM cores, one of which is responsible for the communication control of the human-machine interface, and the other is responsible for the communication control and data interaction of the 100M optical fiber interface unit, 2M electrical interface unit, and 2M optical interface unit.

8. The simulation device for stabilizing inter-station data according to claim 1, characterized in that: The underlying encoding and decoding of the sending interface and receiving interface of the 100M fiber optic interface unit, 2M electrical interface unit and 2M optical interface unit adopts FPGA.

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