CN112511378B

CN112511378B - Performance test system and method for process layer switch of intelligent substation

Info

Publication number: CN112511378B
Application number: CN202011288837.2A
Authority: CN
Inventors: 王大兴; 刘学文
Original assignee: Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
Current assignee: Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2022-08-23
Anticipated expiration: 2040-11-17
Also published as: CN112511378A

Abstract

The invention discloses a system and a method for testing the performance of a process-level switch of an intelligent substation, relates to the field of debugging of automatic equipment for the intelligent substation, and solves the problem of incomplete testing. The digital relay protection tester is correspondingly connected with a process layer switch through an optical fiber, a gathering output port of the process layer switch is correspondingly connected with an input port of a network message analysis device, the process layer switch is a device to be tested, the process layer switch is used for receiving data flow of the digital relay protection tester, the data flow comprises SV and GOOSE data, and the data flow is also used for gathering flow of each port and then sending the flow to the network recording analysis device; the digital relay protection tester is used for importing SV messages with different intervals and GOOSE data for the intelligent substation, and is also used for sending the SV messages and the GOOSE data after configuration to the process layer switch. The invention is upgraded and reformed, and can reflect the data message of the intelligent substation more truly.

Description

System and method for testing performance of process layer switch of intelligent substation

Technical Field

The invention relates to the field of debugging of automation equipment for an intelligent substation, in particular to a system and a method for testing the performance of a process layer switch of the intelligent substation.

Background

The intelligent substation process layer switch is intelligent substation core automation equipment. The process level switch is important process level equipment of the intelligent substation and is key equipment for normal operation of the intelligent substation. The process layer networking of the intelligent substation system mainly carries out networking connection on process layer equipment such as a merging unit, an intelligent terminal, an intelligent microcomputer protection device and a measurement and control device and related automation equipment in modes such as optical cables and jumping fibers, a process layer switch is the core of the connection among the equipment, and all the process layer equipment can be connected into the process layer switch, so that the process layer switch becomes the vital automation equipment of the intelligent substation. The process layer switch can transmit various digital messages conforming to IEC61850 standard specifications, such as networking trip, networking current and voltage sampling and various signal event data among intelligent devices. Process layer device data is associated through the process layer switch. Therefore, the process-level switch is particularly important for the intelligent substation and is a key automation device for ensuring the normal operation of the intelligent substation.

The process layer switch can be divided into an interval process layer switch and a process layer central switch, the interval process layer switch collects all interval data, and the process layer central switch collects all interval process layer switches, so that the process layer switch is large in flow and heavy in load and is a key part of networking. The process level central switch is connected with more automation equipment, a fault recording device, a network analysis message device, a synchronous phasor device and the like need larger flow to analyze and collect data, and similarly, the process level central switch is connected with a bus protection device and is a data channel of important substation events such as GOOSE long jump, failure and locking reclosing of the intelligent substation, and GOOSE data, SV data and the like of the intelligent substation cannot be lost and can be rapidly forwarded, so that the intelligent substation can normally operate.

In the prior art, a conventional testing method is to perform traffic injection on a switch, check whether the switch has forwarding capability, and test GOOSE delay capability under the condition of small traffic, so that the purpose of use in an intelligent substation can be basically achieved. However, in the operation process of the intelligent substation, many emergency situations exist, for example, SV networking data often appears, and a large flow is recovered and generated at the same time, and under the condition of the emergency flow, the function of the process layer switch is not effectively verified, so that a more accurate test is needed to ensure that the process layer switch can realize safe operation under various conditions.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the existing process layer switch does not perform the performance test of the emergency under the real operation condition. Various performance tests of the process level switch of the transformer substation are not developed in a targeted manner. The test is incomplete, for example, an SV merging unit for SV networking recovers power transmission and generates a large flow at the same time, and under such an unexpected flow condition, the process layer switch does not perform an effective verification function, and the state of data transmission and delay at this time may affect the operation of the whole substation. Therefore, a more accurate test is needed, and the process layer switch test can be perfected, the sudden data flow of the intelligent substation and various performance tests of the switch under the flow can be simulated.

The invention needs to verify the single-port output bearing capacity test of the process layer switch, the GOOSE data delay capacity test under relative static flow, and the GOOSE data delay capacity and port operation capacity test under dynamic flow (burst network storm). And respectively testing the capabilities by using auxiliary tests such as a network message analysis device, a digital relay protection tester and the like, thereby verifying the reliability of the data forwarding capability of the switch.

The invention provides a system and a method for testing the performance of an intelligent substation process level switch, which solve the problems.

The method is realized by the following technical scheme:

the intelligent substation process layer switch performance test system comprises a digital relay protection tester, a process layer switch, a network message analysis device and a Beidou time service device;

the digital relay protection tester is correspondingly connected with the process layer switch through optical fibers, a gathering output port of the process layer switch is correspondingly connected with an input port of the network message analysis device, the process layer switch is a device to be tested, the process layer switch is used for receiving data flow of the digital relay protection tester, the data flow comprises SV messages and GOOSE data, and the gathering output port of the process layer switch is used for gathering the flow and then sending the flow to the network record analysis device;

all ports of the process layer switch receive SV messages and GOOSE data without being limited by the VLAN, and all VLAN can be configured on the ports to be tested of the process layer switch and can be output;

the digital relay protection tester is used for importing SV messages with different intervals and GOOSE data for the intelligent substation, and is also used for sending the SV messages and the GOOSE data after configuration to the process layer switch;

the network message analysis device is used for receiving the summarized flow of the process layer switch, analyzing the flow, recording the GOOSE data time and analyzing the GOOSE receiving time difference;

the Beidou time service device is used for sending Beidou time service signals and is connected with the digital relay protection tester;

the method also comprises a file for configuring the SV message GOOSE data of the intelligent substation, wherein the SCD file comprises SV messages and GOOSE data messages at different intervals.

Preferably, the system comprises a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C;

two paths of SV data are configured at each port of a digital relay protection tester A, one path of SV data is configured at each port of a digital relay protection tester B and a digital relay protection tester C, SV messages at different time intervals are imported into the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, and different VLANs are respectively configured for the SV messages at different time intervals;

and the digital relay protection tester C receives the GOOSE data of the SCD file configured by the intelligent substation.

the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C respectively import different interval SV messages, each port is configured with one SV message output, and VLAN identifications are configured on the output SV messages.

Preferably, the system comprises a digital relay protection tester A, a digital relay protection tester B, a digital relay protection tester C and a digital relay protection tester D;

each port of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C is configured with two paths of SV data, SV messages with different intervals are imported, and different VLANs are respectively configured for the SV messages with different intervals; and importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester D.

The method for testing the performance of the process layer switch of the intelligent substation comprises the following steps:

s1, importing SCD file SV data configured by the intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C, respectively importing different interval SV messages into the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, configuring one SV message output at each port, and configuring VLAN identifications on the output SV messages;

s2, configuring all port receiving SVs of the process layer switch without being limited by the VLAN, configuring all VLAN to be output of the port to be tested of the switch;

s3, respectively preparing a plurality of groups of optical fibers to be connected to a process layer switch by a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C;

s4, connecting the port to be tested of the process layer switch to the network message analysis device through an optical fiber;

s5, controlling an output port through the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, and gradually increasing the flow;

s6, checking whether the SV data output by the process layer switch testing port is consistent with the output of the tester and whether frame loss exists.

Further, the method includes reconfiguring the tester output port if the data is normal, increasing the SV output to two ports, and repeating the steps S2-S6.

And further, if the switch operates normally and SV data is output normally, the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C respectively test the ports added to the switch each time, and the operation conditions after the port adding tests are sequentially checked.

The principle of the technical scheme is as follows: under the normal operation condition of the exchanger, the flow is relatively large, and the operation condition is very important. GOOSE data in the process level switch, especially data transmission delay related to protection, is very important, the most important function of protection is to quickly, accurately and sensitively remove faults, and the protection data in the GOOSE data in the process level switch is more, such as a fault starting signal of bus protection, a blocking reclosing signal of line protection, a remote trip signal, signals of removing a re-pressing blocking and a fault joint tripping in main transformer protection, and the like, all need to access and forward data through the process level switch. The delay of these signals often determines whether the fault can be correctly and quickly removed. And if the traffic is large or the traffic is suddenly changed, the GOOSE data can be normally transmitted without frame loss and other abnormal conditions.

The intelligent substation process layer switch performance testing method comprises the following steps:

step 1: and (3) configuring a sending port of the digital relay protection tester:

the method comprises the steps of importing the SV data of the SCD file configured by the intelligent substation into a digital relay protection tester A and a digital relay protection tester B, configuring two paths of SV data at each port of the digital relay protection tester A, configuring one path of SV data at each port of the digital relay protection tester B, importing SV messages with different intervals into the digital relay protection tester A and the digital relay protection tester B, and configuring different VLANs for the SV messages with different intervals respectively. Importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester C;

and 2, step: connecting the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C with the process layer switch through optical fibers;

and step 3: connecting a digital relay protection tester C into a process layer switch through an optical fiber, and connecting the digital relay protection tester C into a network message analysis device through the optical fiber;

and 4, step 4: accessing a process layer switch into a network message analysis device through an optical fiber; accessing a process layer switch into a network message analysis device through an optical fiber;

and 5: all ports of the configuration process layer switch receive SV without the restriction of VLAN;

step 6: connecting the network message analysis device with computer equipment through network connection to exchange information;

and 7: SV messages are added to a process layer switch through a digital relay protection tester A to serve as basic operation flow, a digital relay protection tester B serves as increased flow, port flow is opened step by step and is injected into the process layer switch, and GOOSE1 data are simultaneously injected into the process layer switch and a network message analysis device through a port 1 and a port 2 by the digital relay protection tester C respectively.

The principle of the technical scheme is as follows: the GOOSE data delay capability under the static flow is a real simulation based on the running condition of the intelligent substation. The GOOSE data delay capability test under the relative static flow can check whether the delay of the GOOSE data in the transformer substation has errors under various flow conditions.

Generally, under the operation condition of a transformer substation, various SV data messages often exist in a process layer switch, the flow rate is also large, and various GOOSE data exist at the same time, and the data have important protection function data, such as line protection long trip GOOSE, bus protection GOOSE failure action GOOSE, bus protection lockout reclosing GOOSE, and the like. The delay of the protection data is very important to the abnormal condition of whether frame loss occurs, and the relation protects whether correct action can be performed or not and whether quick and sensitive action can be performed or not.

a, configuring a sending port of the digital relay protection tester: importing SCD file SV data configured by the intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C;

two paths of SV data are configured at each port of a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C, SV messages at different intervals are respectively imported into the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, different VLANs are respectively configured for the SV messages at different intervals, and the GOOSE data of SCD files configured by the intelligent substation are imported into a digital relay protection tester D;

b, connecting the digital relay protection tester A, the digital relay protection tester B, the digital relay protection tester C and the digital relay protection tester D with the process layer switch through optical fibers;

c, connecting the digital relay protection tester D into the process layer switch through an optical fiber, and simultaneously connecting the digital relay protection tester D into the network message analysis device through the optical fiber;

d, connecting the Beidou time service device to a digital relay protection tester B, a digital relay protection tester C and a digital relay protection tester D time service interface;

e, all ports of the configuration process layer switch receive the SV without the limitation of the VLAN, and all ports are configured with SV and GOOSE output;

f, connecting the network message analysis device with the computer equipment through network connection to exchange information;

and G, SV data are injected into the port A of the digital relay protection tester to serve as basic operation flow of the switch, the digital relay protection tester B and the digital relay protection tester C serve as increased flow, time synchronization and time synchronization are performed through Beidou, and GOOSE2 data are simultaneously triggered by the digital relay protection tester D from the port 1 and the port 2.

The main purpose of the technical scheme is to solve the problem that the process layer switch in the intelligent substation is not systematically tested, and does not truly simulate the operation condition which possibly occurs, and by applying flow to the process layer switch, effective SV and GOOSE data are utilized to test, the performance of the switch is comprehensively known, and abnormal operation conditions of the intelligent substation are reduced.

The principle of the technical scheme is as follows: a GOOSE data delay capability and port operation capability test under dynamic flow (burst network storm) solves the problem that network optical fiber interruption occurs suddenly in a transformer substation or secondary process layer equipment (particularly a merging unit) fails, network data flow can occur suddenly after the optical fiber is recovered or the secondary process layer equipment is powered on, and after the data flow occurs, a process layer switch can normally operate and can keep normal working performance.

The invention has the following advantages and beneficial effects:

1. the invention provides a method for testing the single-port output bearing capacity of a process layer switch, which can reflect the data message of an intelligent substation more truly by upgrading and reconstructing the traditional test.

2. The invention provides a method for testing GOOSE data delay capacity under relative static flow, which can simulate real substation events and test the performance of a switch to the maximum extent. The transmission reliability, sensitivity and rapidness of the protection GOOSE are improved.

3. The invention provides a GOOSE data delay capability and port operation capability test under dynamic flow (burst network storm), which simulates the situation that burst network optical fiber is interrupted in a transformer substation or burst secondary process layer equipment (particularly a merging unit) is powered off, and the network data flow can be burst after the optical fiber is recovered or the secondary process layer equipment is powered on.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic diagram of a single-port output bearing capacity test of a process layer switch.

Fig. 2 is a schematic diagram of GOOSE data delay capability test under relative static traffic.

Fig. 3 is a schematic diagram of GOOSE data delay capability and port operation capability test under dynamic traffic (burst network storm).

Detailed Description

Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive changes, are within the scope of the present invention.

Example 1

Three sets of independent digital relay protection testers are connected with a process layer switch, and the other single port of the process layer switch is connected with a network message recording and analyzing device.

As shown in the schematic diagram of fig. 1 of the single-port output bearing capacity test of the process layer switch, the port connection mode is as shown in fig. 1, and when the single-port output bearing capacity of the process layer switch is tested, the test steps specifically include:

and S1, configuring a sending port of the digital relay protection tester. And importing the data of the SCD file SV configured by the intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C. And respectively importing SV messages with different intervals, configuring one path of SV message output at each port, and configuring VLAN identifications on the output SV messages. So as to simulate the process layer message of the intelligent substation. The VLANs are shown in the table below.

S2, configuring all port receiving SVs of the process layer switch to be not limited by the VLANs, and configuring all VLANs to be output by the port to be tested of the switch, namely configuring all VLANs (11, 12, 13, 14, 15, 21, 22, 23, 24, 25, 31, 32, 33, 34 … …) to be output by the testing port.

And S3, before the test starts, the digital relay protection tester A and the digital relay protection tester B respectively prepare five groups of optical fibers to be connected to the process layer switch, and the digital relay protection tester C needs to prepare a plurality of groups of optical fibers to be connected to the process layer switch.

And S4, the port to be tested of the process layer switch is accessed to the network message analysis device through the optical fiber.

And S5, after the equipment is arranged, controlling the output port through the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, and outputting SV data to the port 1 of the process layer switch only through the port 1 of the first group by the digital relay protection tester A when the test is started.

S5, observing the network message analysis device, checking whether the SV data output by the process layer switch test port is consistent with the output of the tester and whether frame loss exists, if the data is normal, reconfiguring the output port of the tester, and increasing the output of the SV port to two ports. If the exchanger operates normally and outputs SV data normally, one port can be added each time to check the operating condition in turn.

And S6, until the switch port outputs frame loss condition or abnormal alarm occurs in the switch, or data can not be output. At this time, the load of the output port of the switch, that is, the single-port output bearing capacity of the switch, is recorded on the network message analysis device.

Example 2

The GOOSE data delay capability test under the relative static flow is a real simulation based on the operation condition of the intelligent substation, generally, under the operation condition of the substation, various SV data messages often exist in a process layer switch, various GOOSE data exist at the same time, and the data have important protection function data, such as line protection far trip GOOSE, bus protection GOOSE failure action GOOSE, bus protection closing reclosing GOOSE and the like. The GOOSE data delay capability test under the relative static flow can check whether the delay of the GOOSE data in the transformer substation has errors under various flow conditions.

Fig. 2 is a schematic diagram of testing GOOSE data delay capability under static traffic according to the present invention.

Step 1: and configuring a sending port of the digital relay protection tester. The method comprises the steps of importing the SV data of the SCD file configured by the intelligent substation into a digital relay protection tester A, configuring two paths of SV data at each port, configuring one path of SV data at each port, importing SV messages at different intervals, and configuring different VLANs for the SV messages at different intervals respectively. And importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester C. The VLAN and GOOSE configurations are shown in the table below.

And step 3: the digital relay protection tester C accesses the port 1 to the port 20 of the process layer switch through an optical fiber, and accesses the port 2 of the digital relay protection tester C to the port 1 of the network message analysis device through the optical fiber.

And 4, step 4: the process layer switch accesses the port 22 to the port 2 of the network message analysis device through an optical fiber; the process layer switch accesses port 21 to network message analysis device port 3 via the optical fiber.

And 5: all ports of the switch at the configuration process layer receive the SV without being limited by the VLAN (except for the GOOSE data port at the port 22), and other ports which are not accessed into the digital relay protection tester A and the digital relay protection tester B configure all VLAN output and GOOSE output, wherein the port 22 configures no SV output and only configures the GOOSE data output, namely all VLANs (111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 2 … …) are configured to the test port output (except for the port 22).

Step 6: the network message analysis device is connected with the computer equipment through network connection to exchange information.

And 7: after the equipment is arranged, SV data from the port 1 to the port 5 of the digital relay protection tester A is injected into the process layer switch to be used as basic operation flow of the process layer switch. And the digital relay protection tester B is used for increasing the flow, gradually opening SV flows from the port 1 to the port 4 and injecting the SV flows into the process layer switch, and the digital relay protection tester C is used for simultaneously injecting GOOSE1 data into the process layer switch and the network message analysis device through the port 1 and the port 2. The switch 21 port outputs the total flow collected by all ports to the port 3 of the network message analysis device to monitor the flow change.

And 8: and observing the network message analysis device and checking the flow change. The network message analysis device analyzes the GOOSE1 time T1 (receiving time of the 1 port of the network message analysis device) of the digital relay protection tester C and the receiving time T2 (receiving time of the 2 port of the network message analysis device) of the process layer switch GOOSE1, and respectively accesses the computer device to calculate the time difference (T2-T1) and fills the time difference into the following table.

SV Total flow	1 port receiving time	2 port receiving time	GOOSE time delay (T2-T1)
				70-80Mb/s
80-90Mb/s
				90-100Mb/s

Example 3

The GOOSE data delay capability and port operation capability test under dynamic flow (burst network storm) solves the problem that burst network optical fiber interruption in a transformer substation or burst secondary process layer equipment (particularly a merging unit) is powered off, network data flow can be burst after optical fiber recovery or secondary process layer equipment is powered on, and after the data flow occurs, normal operation of a process layer switch is guaranteed and better performance can be kept.

FIG. 3 is a wiring diagram for testing GOOSE data delay capability and port operation capability under dynamic traffic (burst network storm);

step 1: and configuring a sending port of the digital relay protection tester. Importing SCD file SV data configured by an intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C (each port is configured with two paths of SV data), importing SV messages at different intervals, and respectively configuring different VLANs for the SV messages at different intervals; and importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester D. VLAN and GOOSE configurations are shown in the table below.

And 2, step: the digital relay protection tester A, the digital relay protection tester B, the digital relay protection tester C and the digital relay protection tester D are connected with the process layer switch through optical fibers, and the corresponding connection modes (the corresponding relations can be randomly distributed, and are not limited to the conditions shown in the following table) are shown in the following table:

and step 3: the port 1 of the digital relay protection tester D is connected to the port 10 of the process layer switch through optical fibers, and the port 2 of the digital relay protection tester D is connected to the port 1 of the network message analysis device through the optical fibers.

And 4, step 4: and the Beidou time service device is connected to a time synchronization interface of a digital relay protection tester B, a digital relay protection tester C and a digital relay protection tester D.

And 5: all ports of the configuration process layer switch receive the SV without being limited by the VLAN, and all ports should configure the SV and GOOSE output, namely all VLANs (201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 1 … …) are configured to the test port output.

And 7: and after the equipment is arranged, SV data configured from the port 1 to the port 3 of the digital relay protection tester A are injected into the process layer switch to be used as the basic operation flow of the switch. The output of the ports of the digital relay protection tester B and the digital relay protection tester C is used as a flow amplification condition, the time synchronization and the time synchronization are carried out through the Beidou, and the 1 port and the 2 port of the digital relay protection tester D are triggered to send GOOSE2 data when the flow is increased once.

And 8: the digital relay protection instrument B triggering condition sets that the port 1 is triggered at the time of T0, the

ports

1 and 2 are simultaneously triggered at the time of T0+5s, and the

ports

1, 2 and 3 are simultaneously triggered at the time of T0+10 s. When the port 1 of the digital relay protection instrument C is triggered at the time of T0+15s, the

ports

1 and 2 are simultaneously triggered at the time of T0+20s, and the

ports

1, 2 and 3 are simultaneously triggered at the time of T0+25 s. When the digital relay protection instrument C is triggered, the three ports of the digital relay protection instrument B are required to simultaneously output data. The triggering time GOOSE2 of the digital relay protection instrument D is T0+2s, T0+7s, T0+12s, T0+17s, T0+22s and T0+27s respectively.

And step 9: and observing the network message analysis device and checking the flow change of the port 2. And the network message analysis device 2 analyzes the port flow applied by all the digital relay protection testers. And recording the flow value after the triggering moment is increased every time the flow is increased. The network message analysis device records the time T1 when the port 1 receives and the time T2 when the port 2 receives. The time difference was calculated by the computer device and filled into the table below.

Time of day	Output flow rate value	Port	1 receive time	Port	2 receive time	GOOSE time delay (us)
							T0+2s
T0+7s
					T0+12s
T0+17s
					T0+22s
T0+27s

Step 10: the network message analysis device simultaneously records the flow value, and records the flow value at the moment T when the process layer switch loses frames or the port loses function (namely the process layer switch has no transmission value). Filled in the table below.

Time of frame loss (T)	Flow rate value

The invention mainly aims to test the GOOSE transmission performance and SV forwarding performance of the intelligent substation by simulating real data of the intelligent substation, filling the data into a process layer switch and utilizing various data flow changes. Thereby verifying process-level switch forwarding performance.

A method for testing the performance of a process layer switch of an intelligent substation comprises the following steps:

the SV data is configured to sending ports of a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C, SV and GOOSE messages with different intervals are led in, a plurality of VLANs are configured through the testers, all ports of a configuration process layer switch receive the SV without being limited by the VLANs, and all VLANs configured to be tested at ports of the switch can be output. And observing the network message analysis device, checking whether SV data output by the test port of the process layer switch is consistent with the output of the tester and whether frame loss exists, if the data is normal, reconfiguring the output port of the tester, and increasing the SV output of the port to two ports. If the exchanger operates normally and outputs SV data normally, one port can be added each time to check the operating condition in turn. Until the frame loss condition exists at the output of the port of the switch, or the abnormal alarm occurs in the switch, or the data can not be output. At this time, the load of the output port of the switch, that is, the single-port output bearing capacity of the switch, is recorded on the network message analysis device.

And configuring a sending port of the digital relay protection tester. And importing the SV data of the SCD file configured by the intelligent substation into a digital relay protection tester A and a digital relay protection tester B, importing SV messages at different intervals, and configuring different VLANs for the SV messages at different intervals respectively. And importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester C. All testers are connected to the process layer switch through optical fibers. All the ports of the switch in the configuration process layer receive the SV without the limitation of the VLAN, and all other ports which are not accessed into the digital relay protection tester A and the digital relay protection tester B configure all VLAN output and GOOSE output. Injecting basic flow by using a digital relay protection tester A; and the digital relay protection tester B is used for increasing the flow, the digital relay protection tester C outputs GOOSE data frames, and the network message analysis device is used for analyzing the time delay capability test under the static flow in the GOOSE data.

And configuring a sending port of the digital relay protection tester. Importing SCD file SV data configured by an intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C (each port is configured with two paths of SV data), importing SV messages at different intervals, and respectively configuring different VLANs for the SV messages at different intervals; and importing the GOOSE data of the SCD file configured by the intelligent substation into a digital relay protection tester D. And all the testers are connected to the process layer switch, the digital relay protection tester D is connected to the network message analysis device, and the Beidou time service device is connected to the digital relay protection tester B, the digital relay protection tester C and the digital relay protection tester D as time synchronization interfaces. The digital relay protection tester A is used as the basic operation flow of the switch. With digital relay protection tester B, digital relay protection tester C as increasing the flow, trigger constantly after to the time through big dipper, digital relay protection tester D triggers GOOSE2 data simultaneously from 1 mouthful and 2 mouths, all triggers through the big dipper. The network message analysis device analyzes the port flow applied by all the digital relay protection testers, records the triggering time and analyzes the time difference of the GOOSE2 under various flow conditions.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The intelligent substation process layer switch performance test system is characterized by comprising a digital relay protection tester, a process layer switch, a network message analysis device and a Beidou time service device;

the digital relay protection tester is correspondingly connected with the process layer switch through optical fibers, a gathering output port of the process layer switch is correspondingly connected with an input port of the network message analysis device, the process layer switch is a device to be tested, the process layer switch is used for receiving data flow of the digital relay protection tester, the data flow comprises SV messages and GOOSE data, and the gathering output port flow of the process layer switch is also used for gathering the output port flow and then sending the output port flow to the network message analysis device;

the digital relay protection tester is used for importing SV messages at different intervals and GOOSE data for the intelligent substation, and is also used for sending the SV messages and the GOOSE data after configuration to the process layer switch;

the network message analysis device is used for receiving the gathered flow of the process layer switch, analyzing the flow, recording the GOOSE data triggering time and analyzing the GOOSE data receiving time difference;

the intelligent substation configuration SV message and the SCD file of the GOOSE data are further included, and the SCD file comprises the GOOSE data and SV messages at different intervals;

the digital relay protection tester comprises: the system comprises a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C;

the port configuration mode of the digital relay protection tester is one of the following three modes: configuring a SV message at each port of a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C; each port of the digital relay protection tester A is configured with two paths of SV messages, each port of the digital relay protection tester B is configured with one path of SV message, and GOOSE data of an SCD file is imported into the digital relay protection tester C; and each port of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C is configured with two paths of SV messages.

2. The intelligent substation process layer switch performance test system is characterized by comprising a digital relay protection tester, a process layer switch, a network message analysis device and a Beidou time service device;

the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C respectively import SV messages at different intervals, each port of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C is configured with a SV message output, and VLAN identifications are configured on the output SV messages.

3. The intelligent substation process layer switch performance test system is characterized by comprising a digital relay protection tester, a process layer switch, a network message analysis device and a Beidou time service device;

the digital relay protection tester is correspondingly connected with the process layer switch through optical fibers, a gathering output port of the process layer switch is correspondingly connected with an input port of the network message analysis device, the process layer switch is a device to be tested, the process layer switch is used for receiving data flow of the digital relay protection tester, the data flow comprises SV messages and GOOSE data, and the gathering output port of the process layer switch is used for gathering the flow and then sending the flow to the network message analysis device;

the network message analysis device is used for receiving the summarized flow of the process layer switch, analyzing the flow, recording the GOOSE data triggering time and analyzing the GOOSE data receiving time difference;

the system further comprises an SCD file for configuring SV messages and GOOSE data by the intelligent substation, wherein the SCD file comprises the GOOSE data and SV messages at different intervals;

the digital relay protection tester comprises: the system comprises a digital relay protection tester A, a digital relay protection tester B, a digital relay protection tester C and a digital relay protection tester D;

the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C respectively import SV messages with different intervals, and respectively configure a different VLAN for the imported SV messages with different intervals, and all ports of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C which need to be configured are configured with two paths of SV messages to be sent; and importing the single GOOSE data used by the intelligent substation into a digital relay protection tester D.

4. The method for testing the performance of the process layer switch of the intelligent substation is characterized by comprising the following steps of:

s1, importing SV messages used by the intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C, respectively importing SV messages at different intervals into the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, configuring one SV message output at each port of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, and configuring VLAN identifications on the output SV messages;

s2, configuring all ports of the process layer switch to receive SV messages without being limited by VLAN, configuring all to-be-tested ports of the process layer switch with VLAN and outputting the VLAN;

s3, respectively preparing a plurality of groups of optical fibers to be connected to the process layer switch by the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C;

s5, controlling output ports of the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C through the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C, and gradually increasing flow;

s6, checking whether the SV message output by the port to be tested of the process layer switch is consistent with the output of the digital relay protection tester and whether frame loss exists.

5. The intelligent substation process layer switch performance testing method is characterized by comprising the following steps:

importing SV messages of SCD files configured by an intelligent substation into a digital relay protection tester A and a digital relay protection tester B, configuring two SV messages at each port of the digital relay protection tester A, configuring one SV message at each port of the digital relay protection tester B, respectively importing SV messages with different intervals for the digital relay protection tester A and the digital relay protection tester B, configuring one VLAN for each SV message, and importing GOOSE data of the SCD files configured by the intelligent substation into a digital relay protection tester C;

step 2: the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C are respectively connected with the process layer switch through optical fibers;

and step 3: accessing a digital relay protection tester C into a process layer switch through an optical fiber, and accessing the digital relay protection tester C into a network message analysis device through the optical fiber;

and 4, step 4: accessing a process layer switch into a network message analysis device through an optical fiber;

and 5: all ports of the configuration process layer switch receive SV messages without being limited by the VLAN;

and 7: SV messages are added to a process layer switch through a digital relay protection tester A to be used as basic operation flow, SV messages output by a digital relay protection tester B are used as process layer switch test background flow, port flow is gradually opened and flow is injected into the process layer switch, GOOSE data is injected into a port 20 of the process layer switch through a port 1 of the digital relay protection tester C, and GOOSE data is injected into a port 1 of a network message analysis device through a port 2 of the digital relay protection tester C.

6. The method for testing the performance of the process layer switch of the intelligent substation is characterized by comprising the following steps of:

step 1, configuring a sending port of the digital relay protection tester: importing SV messages used by an intelligent substation into a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C;

two paths of SV messages are configured at each port of a digital relay protection tester A, a digital relay protection tester B and a digital relay protection tester C, the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C respectively import SV messages with different intervals, each path of SV messages configured in the digital relay protection tester A, the digital relay protection tester B and the digital relay protection tester C are respectively configured with a different VLAN, and GOOSE data used by an intelligent substation are imported into a digital relay protection tester D;

step 2, respectively connecting the digital relay protection tester A, the digital relay protection tester B, the digital relay protection tester C and the digital relay protection tester D with the process layer switch through optical fibers;

step 3, connecting a port 1 of the digital relay protection tester D to a port 10 of a process layer switch through an optical fiber, and connecting a port 2 of the digital relay protection tester D to a port 1 of a network message analysis device through the optical fiber;

step 4, connecting the Beidou time service device to time setting interfaces of a digital relay protection tester B, a digital relay protection tester C and a digital relay protection tester D;

step 5, all ports of the configuration process layer switch receive SV messages without being limited by VLAN, and all ports are configured with SV messages and GOOSE data output;

step 6, connecting the network message analysis device with the computer equipment through network connection to exchange information;

and 7, injecting SV messages into the port A of the digital relay protection tester to serve as basic operation flow of the process layer switch, injecting SV messages into the digital relay protection tester B and the digital relay protection tester C to serve as background flow increased after each test, performing time triggering after Beidou time synchronization, and simultaneously triggering GOOSE data from the port 1 and the port 2 of the digital relay protection tester D.