CN109639518B - Third-generation intelligent substation integral ring network test system - Google Patents
Third-generation intelligent substation integral ring network test system Download PDFInfo
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Abstract
The invention discloses a third-generation intelligent substation integral ring network test system and an application method thereof, wherein the test system comprises a test host and a plurality of in-situ test sub-machines, the in-situ test sub-machines comprise a plurality of switching quantity in-situ test sub-machines and a plurality of analog quantity in-situ test sub-machines, the switching quantity in-situ test sub-machines correspond to the switching quantity in-situ modules in a tested integral ring network one by one, the analog quantity in-situ test sub-machines correspond to the analog quantity in-situ modules in the tested integral ring network one by one, and the test host comprises a control command output port, a synchronous time setting module and an HSR ring network data transceiving interface; the application method comprises the steps of carrying out integral ring network delay test and integral ring network avalanche test. The invention can realize the function and performance test of the whole HSR ring network of the third-generation intelligent substation, realize the simultaneous batch test of the switching value on-site module and the analog value on-site module, truly simulate the actual operation working condition of the primary equipment of the intelligent substation, and improve the maintenance efficiency.
Description
Technical Field
The invention relates to a testing technology of a measurement and control submachine of a third-generation intelligent substation, in particular to an integral ring network testing system of the third-generation intelligent substation and an application method thereof.
Background
After the national grid company starts the intelligent transformer substation from 2009 to build a trial point, about 5000 intelligent transformer substations including a first-generation intelligent transformer substation and a second-generation intelligent transformer substation are built domestically at present. The intelligent substation achieves certain effect in the aspects of economy, energy conservation, environmental protection and the like due to high system integration and reasonable structural layout. However, in practical applications, many problems are also exposed. Particularly, in the aspect of operation and maintenance of the intelligent substation, the development of the intelligent substation is greatly restricted by heavy maintenance workload and high maintenance cost. In order to achieve the aims of high reliability of power supply of a power grid and high efficiency of operation and detection of a transformer substation, a national power grid company starts the third-generation intelligent transformer substation test point construction work in 2018.
The control core equipment of the third-generation intelligent substation is a primary equipment on-site module, the number of the primary equipment on-site modules is large, and the on-site module information exchange passes through an HSR (high speed railway) ring network, so that how to effectively detect, monitor and manage the large number of the primary equipment on-site modules is a key problem to be solved urgently in safe and stable operation of the third-generation intelligent substation. At present, the universal switch quantity on-site module is taken as a new thing, and the following problems exist in the aspects of operation and maintenance: (1) the number of local modules of the primary equipment is large, an HSR (high speed railway) ring network protocol is adopted among the primary equipment, the interconnection and the intercommunication are not visual, the HSR ring network protocol is a new message communication protocol, related testing means and testing equipment are lacked in China, and the safe operation of a transformer substation is greatly influenced; (2) in the whole interval protection system, the switching value on-site module and the analog value on-site module are arranged, and the reliability and the transmission delay correctness of the whole HSR looped network for transmitting the relevant switching value and analog value information to the measurement and control submachine directly influence the safety of a power grid. Therefore, how to implement the whole ring network test, i.e. the information transmission reliability test and the transmission delay correctness test of the whole interval HSR ring network, becomes a key technical problem to be solved urgently.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the invention can realize the test of the whole ring network structure of the third-generation intelligent substation, namely, the synchronous test of a whole interval switching value on-site module and an analog value on-site module, can realize the delay correctness maintenance and verification of the whole HSR ring network of the whole interval switching value on-site module and the analog value on-site module, can solve the problems that the HSR ring network formed by the switching value on-site module and the analog value on-site module of the third-generation intelligent substation is lack of a detection tool and the synchronous automatic maintenance of the whole interval HSR ring network switching value on-site module and the analog value on-site module, and ensures that the on-site module is simpler, more intelligent and more convenient to operate and inspect.
In order to solve the technical problems, the invention adopts the technical scheme that:
a third generation intelligent substation integral ring network test system comprises a test host and a plurality of in-situ test sub-machines, wherein the plurality of in-situ test sub-machines comprise a plurality of switching value in-situ test sub-machines and a plurality of analog quantity in-situ test sub-machines, the switching value in-situ test sub-machines correspond to the switching value in-situ modules in a tested integral ring network one by one, the analog quantity in-situ test sub-machines correspond to the analog quantity in-situ modules in the tested integral ring network one by one, the test host comprises a control command output port, a synchronous time synchronization module and an HSR ring network data transceiving interface, the control command output port of the test host and the output port of the synchronous time synchronization module are respectively connected with each in-situ test sub-machine through a communication line, the output end of each in-situ test sub-machine is connected with the corresponding switching value in-situ module or the signal input, and the HSR looped network data receiving and transmitting interface of the test host is connected with an interface module in the tested integral looped network.
Preferably, the tested integral ring network comprises an interface module and a plurality of on-site modules, the on-site modules are respectively a switching value on-site module and an analog value on-site module, the on-site modules in the tested integral ring network are connected end to form a chain structure, a forward ring network link and a reverse ring network link are arranged between adjacent nodes in the chain structure, the two HSR ring network links are arranged between the adjacent nodes, the on-site modules at the chain head and the chain tail respectively connect the forward ring network link and the reverse ring network link to the interface module, the test host comprises four HSR ring network data transceiving interfaces, two of the HSR ring network data transceiving interfaces are connected into the forward ring network link to form the integral ring network, and the other two HSR ring network data transceiving interfaces are connected into the reverse ring network link to form.
Preferably, the control command output port of the test host and the output port of the synchronous time synchronization module are both optical fiber interfaces, and the control command output port and the output port of the synchronous time synchronization module are connected with one local test sub-machine through one optical fiber respectively.
Preferably, the synchronous time setting module is an FPGA time setting module.
Preferably, the switching value on-site testing sub-machine comprises a 32-way opening amount hard contact and a 32-way opening amount hard contact, the opening amount hard contact and the opening amount hard contact are all optical coupling structure switching value contacts, and the contact closing time of the opening amount hard contact and the opening amount hard contact is not more than 100 ns.
Preferably, the 32-way input hard contact and the 32-way output hard contact of the switching quantity on-site test sub-machine are standard aviation plugs.
Preferably, the analog quantity on-site testing sub-machine comprises 6 voltage output ports and 6 current output ports, the output current of a single output port channel is not less than 30A, the precision is 0.2%, and the 6 voltage output ports and the 6 current output ports adopt a standard aviation plug structure.
The invention also provides an application method of the third-generation intelligent substation integral ring network test system, which comprises the step of carrying out integral ring network delay test, and the specific implementation steps comprise:
1) the testing host machine sends a time synchronization signal to each in-situ testing sub-machine through the synchronous time synchronization module, and each in-situ testing sub-machine completes time synchronization with the testing host machine after receiving the time synchronization signal;
2) the testing host sets the MAC address of the HSR message of a target local module, wherein the target local module comprises a switching value local module and an analog quantity local module in the tested integral ring network;
3) the testing host computer sends a switching value or analog output command to the in-situ testing submachine corresponding to each target in-situ module through the control command output port, and records a command sending time T1;
4) the on-site testing sub-machines corresponding to the target on-site modules transmit the switch positions of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site modules in the tested integral ring network, and the target on-site modules in the tested integral ring network convert the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and updates the fixed channel delay T3 through time domain calculation when passing through each other target local module, and finally the HSR message is sent to the test host through an interface module in the tested integral ring network;
5) the test host receives the HSR message through the HSR ring network data receiving and sending interface, records the time T2 of receiving the HSR message, calculates the time delay | T2-T1| of the HSR message in the ring network, wherein T1 is the command sending time, T2 is the time of receiving the HSR message, judges whether the time delay | T2-T1| is less than or equal to a preset threshold value, if yes, the tested integral ring network is normally delayed, otherwise, the tested integral ring network is abnormally delayed;
6) obtaining the fixed channel delay T3 of the HSR message, judging whether the delay | T2-T1| is consistent with the fixed channel delay T3, if so, judging that the fixed delay calculation compensation function of the tested integral ring network is normal, otherwise, judging that the fixed delay calculation compensation function of the tested integral ring network is abnormal;
7) and acquiring a test result, generating a test report, ending and exiting.
Preferably, the preset threshold in step 5) is 1 ms.
Preferably, the method further comprises a step of performing an integral ring network avalanche test, and the specific implementation steps comprise:
s1) the testing host sends a time tick signal to each in-situ testing sub-machine through the synchronous time tick module, and each in-situ testing sub-machine completes the time synchronization with the testing host after receiving the time tick signal; the testing host is arranged to receive HSR messages of all target on-site modules, wherein the target on-site modules comprise switching value on-site modules and analog quantity on-site modules in the tested integral ring network;
s2), judging the type of the test needed to be carried out, and jumping to execute the step S3 if the test is needed to be carried out and the position is changed; otherwise, jumping to execute step S8);
s3) the testing host sends switching value or analog output commands to the in-situ testing submachine corresponding to each target in-situ module through the control command output port;
s4) testing the 1 st closed position change: all switching value on-site testing submachine synchronously outputs switching value on-site switching value modules for specified duration; all the analog quantity on-site testing submachine synchronously outputs rated value voltage and rated value current to the on-site analog quantity module for a specified duration;
s5), the on-site testing sub-machines corresponding to the target on-site modules forward the switch positions of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site modules in the tested integral ring network, and the target on-site modules in the tested integral ring network convert the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to a test host through an interface module in the tested integral ring network;
s6) the test host receives the HSR message through the HSR ring network data receiving and sending interface;
s7) the testing host judges whether three conditions of normal interval ring network communication, closed positions of all switching value positions and rated values of analog quantity voltage and current are satisfied, if so, the testing is judged to be normal, and a testing result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s8) the testing host sends switching value or analog output commands to the in-situ testing submachine corresponding to each target in-situ module through the control command output port;
s9) test fractional shift 1 st time: all switching value on-site testing submachine synchronously output switching value quantiles to the on-site switching value module for a specified duration; all the analog quantity on-site testing submachine synchronously outputs rated value voltage and rated value current to the on-site analog quantity module for a specified duration;
s10), the on-site testing sub-machines corresponding to the target on-site modules forward the switch positions of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site modules in the tested integral ring network, and the target on-site modules in the tested integral ring network convert the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to a test host through an interface module in the tested integral ring network;
s11) the test host receives the HSR message through the HSR ring network data receiving and sending interface;
s12) the testing host judges whether three conditions of normal interval ring network communication, quantile positions of all switching values and rated values of analog voltage and current are satisfied, if so, the testing is judged to be normal, and a testing result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s13) judging that the test is finished, and recording the test result;
s14) judging whether the number of the test rounds is equal to the preset threshold value, if not, jumping to execute the step S2); otherwise, judging to finish the ring network avalanche test.
Compared with the prior art, the third-generation intelligent substation integral ring network test system has the following advantages: the invention relates to an integrated ring network test system of a third-generation intelligent substation, which comprises a test host, a switching value on-site test sub-machine, an analog quantity on-site test sub-machine, a switching value on-site module and an analog quantity on-site module.
Compared with the prior art, the application method of the third-generation intelligent substation integral ring network test system has the following advantages: the invention relates to an application method of an integrated ring network testing system of a third-generation intelligent substation, which comprises the steps of carrying out integrated ring network delay testing, realizing the ring network delay correctness testing of all equipment at intervals by carrying out the integrated ring network delay testing, automatically calculating the transmission delay of a certain on-site module ring network by utilizing the testing system, simultaneously acquiring the fixed delay of a corresponding HSR message after passing through other on-site module nodes through a ring network interface module, realizing the ring network delay correctness testing according to the comparison between the transmission delay of the on-site module ring network calculated by the testing system and the fixed delay acquired through the HSR message, realizing the function and performance testing of the integrated HSR ring network of the third-generation intelligent substation, realizing the simultaneous batch testing of a switching quantity on-site module and an analog quantity on-site module, truly simulating the actual operation condition of primary equipment of the intelligent substation, debugging and improving the third-generation intelligent substation from a single function module to, the maintenance efficiency of the third-generation intelligent substation is greatly improved, and the safe and reliable operation of the power grid is guaranteed.
Drawings
Fig. 1 is a schematic diagram of an application state structure of a conventional tested integrated ring network.
Fig. 2 is a schematic structural diagram of a system according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart of the delay test of the integrated ring network in the embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating the updating of the fixed channel delay T3 according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart of the avalanche test of the integrated ring network according to the embodiment of the present invention.
Illustration of the drawings: 1. a test host; 2. testing the submachine on site; 21. the switching value on-site testing sub-machine; 22. the analog quantity tests the submachine in situ.
Detailed Description
The tested integral ring network shown in fig. 1 is taken as an example, and the third generation intelligent substation integral ring network testing system and the application method thereof will be further described in detail. As shown in fig. 1, the tested integral ring network includes an interface module and a plurality of in-situ modules, the in-situ modules are respectively a switching value in-situ module and an analog value in-situ module, the in-situ modules in the tested integral ring network are connected end to form a chain structure, a forward ring network link (shown by a solid arrow in fig. 1) and a reverse ring network link (shown by a dotted arrow in fig. 1) exist between adjacent nodes in the chain structure, which are two HSR ring network links, and the in-situ modules at the head and the tail of the chain respectively connect the forward ring network link and the reverse ring network link to the interface module.
As shown in fig. 2, the third generation intelligent substation integral ring network testing system of this embodiment includes a testing host 1 and a plurality of in-situ testing sub-machines 2, the plurality of in-situ testing sub-machines 2 includes a plurality of switching value in-situ testing sub-machines 21 and a plurality of analog value in-situ testing sub-machines 22, the switching value in-situ testing sub-machines 21 and the switching value in-situ modules in the tested integral ring network correspond to each other one by one, the analog value in-situ testing sub-machines 22 and the analog value in-situ modules in the tested integral ring network correspond to each other one by one, the testing host 1 includes a control command output port, a synchronous time setting module and an HSR ring network data transceiving interface, the control command output port of the testing host 1 and the output port of the synchronous time setting module are connected to each of the in-situ testing sub-machine 2 through a communication line, the output port of each in-situ testing sub-, the HSR ring network data receiving and sending interface of the test host 1 is connected with the interface module in the tested integral ring network. The whole looped netowrk test system of third generation intelligent substation of this embodiment can solve the HSR looped netowrk that third generation intelligent substation switching value module on the spot and analog quantity module on the spot are constituteed and lack the detection instrument and realize whole interval HSR looped netowrk switching value module on the spot and analog quantity module on the spot synchronous automatic maintenance problem, can support the whole looped netowrk test of third generation intelligent substation, realize the synchronous batch test of switching value module on the spot and analog quantity module on the spot, can realize whole HSR looped netowrk functions and capability test such as whole interval switching value and analog quantity module on the spot whole HSR looped netowrk time delay exactness maintenance check-up and avalanche function, make on the spot module fortune examine simpler, it is more intelligent, and more convenient.
In this embodiment, the test host 1 includes four HSR ring network data transceiver interfaces, two of which are connected to the forward ring network link to form an integral ring network, and the other two are connected to the reverse ring network link to form an integral ring network. In this embodiment, the HSR ring network data transceiver interface is specifically a gigabit optical module receiving interface.
In this embodiment, the control command output port of the test host 1 and the output port of the synchronous time synchronization module are both optical fiber interfaces, and the control command output port and the output port of the synchronous time synchronization module are connected to one local test slave machine 2 through one optical fiber. The test host 1 realizes the control output of all the in-situ test submachine 2, is connected with each in-situ test submachine 2 through 2 paths of optical fibers, and realizes the time synchronization of all the in-situ test submachine 2 when 1 path is used for B code timing; and the other 1 path is used for controlling an output command to realize the switching value position conversion and the transmission of the analog quantity test submachine voltage and current value change command.
In this embodiment, the synchronous timing module is an FPGA timing module.
In this embodiment, the switching value on-site testing sub-machine 21 includes a 32-way switching amount hard contact and a 32-way switching amount hard contact, the switching amount hard contact and the switching amount hard contact all adopt a switching amount contact of an optical coupling structure, and the contact closing time of the switching amount hard contact and the switching amount hard contact does not exceed 100 ns. In this embodiment, the 32-way input hard contact and the 32-way output hard contact of the on-site switching quantity test slave unit 21 are standard aviation plugs. In this embodiment, the analog quantity in-situ testing sub-machine 22 includes 6 voltage output ports and 6 current output ports, the single output port channel output current is not less than 30A, the precision is 0.2%, and the 6 voltage output ports and the 6 current output ports adopt the standard aviation plug structure.
In the present embodiment, the hardware part of the test system is implemented by using a distributed structure, and is composed of a control host 1, a plurality of in-situ test sub-machines 2 (including a plurality of switching value in-situ test sub-machines 21 and a plurality of analog value in-situ test sub-machines 22), and the like. The control host machine 1 realizes synchronous time synchronization of the plurality of on-site testing sub machines 2 through the FPGA time service module, realizes synchronous output of control signals, the switching value on-site testing sub machine 21 realizes simulation of switching value information such as switching value on-site module knife switch, circuit breaker position and the like, the analog quantity on-site testing sub machine 22 realizes simulation of analog quantity information such as analog quantity on-site module voltage, current and the like, and the plurality of on-site testing sub machines 2 realize main transformer equidistant integral HSR ring network testing hardware. The control host 1 can synchronously control 9 local test sub-machines 2, and realizes the functions and performance tests of whole ring network delay, whole interval avalanche and the like of the HSR ring network.
In the whole test system, the test host 1 controls the plurality of on-site test sub-machines 2 (including the plurality of on-site test sub-machines 21 and the plurality of analog on-site test sub-machines 22) to output corresponding on-site switch position, analog voltage and current signals, the on-site switch module and the analog on-site module respectively convert the on-site switch position and the analog into HSR messages, the HSR messages are transmitted to the interface module through an HSR ring network, the test host 1 receives the HSR messages through an HSR ring network data receiving and transmitting interface, and the function and performance test of the whole ring network structure is realized through the analysis of the HSR messages.
As shown in fig. 3, the application method of the third-generation intelligent substation integrated ring network test system in this embodiment includes a step of performing an integrated ring network delay test, and the specific implementation steps include:
1) the testing host 1 sends a time tick signal to each in-situ testing sub-machine 2 through the synchronous time tick module, and each in-situ testing sub-machine 2 completes time synchronization with the testing host 1 after receiving the time tick signal;
2) the testing host 1 sets the MAC address of the HSR message of a target local module, wherein the target local module comprises a switching value local module and an analog quantity local module in the tested integral ring network; the switching value local module and the analog value local module in the tested integral ring network externally send an HSR message, and finally the HSR messages are collected into an HSR message collection, each HSR message has an MAC address, and the MAC address is a unique feature code of the HSR message; the testing host 1 can control all the in-situ testing submachine 2 at the same time, and a target in-situ module corresponding to each in-situ testing submachine 2 only has a unique MAC address.
3) The testing host 1 sends a switching value or analog output command to the in-situ testing submachine 2 corresponding to each target in-situ module through the control command output port, and records a command sending time T1;
4) the on-site testing sub-machines 2 corresponding to the target on-site modules transmit the switch positions of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site modules in the tested integral ring network, and the target on-site modules in the tested integral ring network convert the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and updates the fixed channel delay T3 through time domain calculation when passing through each other target local module, and finally the HSR message is sent to the test host 1 through an interface module in the tested whole ring network;
the fixed channel delay T3 is updated once through time domain calculation every time when passing through another target local module, and the principle of updating the fixed channel delay T3 through time domain calculation is as follows: the HSR ring network introduces the concept of a message delay correction domain FTCF, and the message carries the delay time. And transmitting the message delay by using the delay correction domain, correcting once every time after one node (target local module) is passed until all the nodes finish transmission, and then performing correction processing by using the delay.
From node m to node n, the delay calculation formula is shown as follows:
in the above formula, τlink_inRepresents the transmission time of the inter-link of the node i (including the node message output and receiving end conversion time), taustay_iIndicating the residence time of node i (the interval between the arrival time of the header and the output time of the header). Passing from node 1 to node 2 is schematically illustrated in fig. 4. The total delay from the node 1 to the node 2 includes the sampling delay of the node 1 and the residence time of the message in the node 1, and is counted into a delay correction domain, and the node 2 obtains the delay correction domain of the node 1 and the transmission delay of the message between the nodes 1 and 2, namely the total delay from the message of the node 1 to the node 2. Because the total length of the links among the element protection sub-machines is short (less than 3kM), the link delay time is taken as a selectable item when the message delay time (FTCF) is calculated, and the requirement is not made. The fixed channel delay T3 is calculated by the HSR message itself through the ring network correction, and the test system in this embodiment only collects the fixed channel delay T3 in the HSR message that is finally uploaded to itself every time the HSR message is updated by one target local module.
5) The test host 1 receives the HSR message through the HSR ring network data receiving and sending interface, records the time T2 of receiving the HSR message, calculates the time delay | T2-T1| of the HSR message in the ring network, wherein T1 is the command sending time, T2 is the time of receiving the HSR message, and judges whether the time delay | T2-T1| is less than or equal to a preset threshold value, if yes, the tested integral ring network is normally delayed, otherwise, the tested integral ring network is abnormally delayed; in this embodiment, the preset threshold is 1 ms.
6) Obtaining the fixed channel delay T3 of the HSR message, judging whether the delay | T2-T1| is consistent with the fixed channel delay T3, if so, judging that the fixed delay calculation compensation function of the tested integral ring network is normal, otherwise, judging that the fixed delay calculation compensation function of the tested integral ring network is abnormal;
7) and acquiring a test result, generating a test report, ending and exiting.
In this embodiment, the preset threshold in step 5) is 1 ms.
Referring to fig. 3, before step 1), a testing environment is set up, that is, each in-situ testing sub-machine 2 is respectively connected with a corresponding switching value in-situ module and an analog value in-situ module through a physical channel; the method also comprises a selection test template library, wherein the test template library is a test template of different looped network interval modules and mainly comprises test items such as channel point-to-point functions, voltage and current conversion precision, switch position resolution, channel transmission delay and the like.
The application method of the third-generation intelligent substation integral ring network test system further comprises a step of carrying out integral ring network avalanche test, and is used for verifying that the ring network bears network storm pressure. The testing sub-machine 1 is used for simultaneously simulating the on-off displacement of all the on-off local module and the voltage and current mutation of the analog local module, simultaneously the testing main machine 1 receives all the HSR messages of the local module through the ring network interface module, and the correctness verification of the HSR ring network function and performance is realized through the comparison of the actual position of the on-off position and the actual value of the analog.
As shown in fig. 5, the specific implementation steps of performing the integral ring network avalanche test in this embodiment include:
s1) the testing host 1 sends a time tick signal to each in-situ testing sub-machine 2 through the synchronous time tick module, and each in-situ testing sub-machine 2 completes the time synchronization with the testing host 1 after receiving the time tick signal; the test host 1 is arranged to receive HSR messages of all target on-site modules, wherein the target on-site modules comprise switching value on-site modules and analog quantity on-site modules in the tested integral ring network;
s2), judging the type of the test needed to be carried out, and jumping to execute the step S3 if the test is needed to be carried out and the position is changed; otherwise, jumping to execute step S8);
s3) the testing host 1 sends switching value or analog output commands to the in-situ testing sub-machines 2 corresponding to the target in-situ modules through the control command output ports;
s4) testing the 1 st closed position change: all switching value on-site testing submachine 21 synchronously outputs switching value on-site switching value modules for specified duration; all the analog quantity on-site testing submachine 22 synchronously outputs rated value voltage and rated value current to the on-site analog quantity module for a specified duration;
s5), the on-site testing sub-machine 2 corresponding to each target on-site module forwards the switch position of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site module in the tested integral ring network, and the target on-site module in the tested integral ring network converts the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to the test host 1 through an interface module in the tested whole ring network;
s6) the test host 1 receives the HSR message through the HSR ring network data receiving and sending interface;
s7) the test host 1 judges whether three conditions of normal interval ring network communication, closed positions of all switching value positions and rated values of analog quantity voltage and current are satisfied, if so, the test is judged to be normal, and a test result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s8) the testing host 1 sends switching value or analog output commands to the in-situ testing sub-machines 2 corresponding to the target in-situ modules through the control command output ports;
s9) test fractional shift 1 st time: all switching value on-site testing submachine 21 synchronously outputs switching value quantiles to the on-site switching value module for a specified duration; all the analog quantity on-site testing submachine 22 synchronously outputs rated value voltage and rated value current to the on-site analog quantity module for a specified duration; in the embodiment, the specified time lengths are all 1 second;
s10), the on-site testing sub-machine 2 corresponding to each target on-site module forwards the switch position of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site module in the tested integral ring network, and the target on-site module in the tested integral ring network converts the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to the test host 1 through an interface module in the tested whole ring network;
s11) the test host 1 receives the HSR message through the HSR ring network data receiving and sending interface;
s12) the test host 1 judges whether three conditions of normal interval ring network communication, quantile positions of all switching values and rated values of analog voltage and current are satisfied, if so, the test is judged to be normal, and a test result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s13) judging that the test is finished, and recording the test result;
s14), determining whether the number of test rounds is equal to a preset threshold (in this embodiment, the number is 40), and if not, skipping to execute step S2; otherwise, judging to finish the ring network avalanche test.
In this embodiment, the test host 1 controls all the switch quantity test sub-machines 21 and the analog quantity test sub-machines 22 to shift and output simultaneously, 1s shifts 1 time, and shifts 80 times (respectively 40 times) continuously, the local module mutation message is transmitted to the interval interface module through the ring network structure, and the test host collects and analyzes the HSR protocol messages of all the local modules through the gigabit optical interface, thereby finally realizing the verification of the correctness of the whole ring network structure for transmitting the HSR protocol messages under the large mutation flow. And after the looped network avalanche test is completed, the statistical analysis of the test result of the whole looped network can be carried out.
In conclusion, in the embodiment, the function and performance test of the whole HSR ring network of the third-generation intelligent substation is realized, the simultaneous batch test of the on-site module of the switching value and the on-site module of the analog value is realized, the actual operation condition of the primary equipment of the intelligent substation is truly simulated, the debugging of the single functional module of the third-generation intelligent substation is promoted to the whole interval test, the overhaul and maintenance efficiency of the third-generation intelligent substation is greatly improved, and the safe and reliable operation of a power grid is ensured.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides an integral looped netowrk test system of third generation intelligent substation which characterized in that: the testing system comprises a testing host (1) and a plurality of in-place testing submachine (2), wherein the plurality of in-place testing submachine (2) comprise a plurality of switching value in-place testing submachine (21) and a plurality of analog quantity in-place testing submachine (22), the switching value in-place testing submachine (21) corresponds to the switching value in-place modules in the tested integral ring network one by one, the analog quantity in-place testing submachine (22) corresponds to the analog quantity in-place modules in the tested integral ring network one by one, the testing host (1) comprises a control command output port, a synchronous time setting module and an HSR ring network data transceiving interface, a control command output port of the testing host (1) and an output port of the synchronous time setting module are respectively connected with each in-place testing submachine (2) through a communication line, and an output end of each in-place testing submachine (2) is connected with a signal input end of the corresponding switching value in-place module, the HSR looped network data receiving and sending interface of the test host (1) is connected with an interface module in the tested integral looped network;
the step of carrying out the integral ring network delay test by the third-generation intelligent substation integral ring network test system comprises the following steps:
1) the testing host (1) sends a time tick signal to each in-situ testing sub-machine (2) through the synchronous time tick module, and each in-situ testing sub-machine (2) completes time synchronization with the testing host (1) after receiving the time tick signal;
2) the method comprises the following steps that a test host (1) sets an MAC address of an HSR message of a target local module, wherein the target local module comprises a switching value local module and an analog quantity local module in a tested integral ring network;
3) the testing host (1) sends a switching value or analog value output command to the local testing sub-machines (2) corresponding to the target local modules through the control command output port, and records a command sending time T1;
4) the on-site testing sub-machines (2) corresponding to the target on-site modules transmit the switch positions of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site modules in the tested integral ring network, and the target on-site modules in the tested integral ring network convert the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch positions of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and updates the fixed channel delay T3 through time domain calculation when passing through each other target local module, and finally the HSR message is sent to the test host (1) through an interface module in the tested whole ring network;
5) the method comprises the steps that a test host (1) receives an HSR message through an HSR ring network data receiving and sending interface, records the time T2 for receiving the HSR message, calculates the time delay | T2-T1| of the HSR message in a ring network, wherein T1 is the command sending time, T2 is the time for receiving the HSR message, judges whether the time delay | T2-T1| is smaller than or equal to a preset threshold value or not, if yes, the tested integral ring network is judged to be normally delayed, and if not, the tested integral ring network is judged to be abnormal in delay;
6) obtaining the fixed channel delay T3 of the HSR message, judging whether the delay | T2-T1| is consistent with the fixed channel delay T3, if so, judging that the fixed delay calculation compensation function of the tested integral ring network is normal, otherwise, judging that the fixed delay calculation compensation function of the tested integral ring network is abnormal;
7) and acquiring a test result, generating a test report, ending and exiting.
2. The third generation intelligent substation integral ring network test system of claim 1, characterized in that: the tested integral ring network comprises an interface module and a plurality of on-site modules, wherein the on-site modules are switching value on-site modules and analog quantity on-site modules respectively, the on-site modules in the tested integral ring network are connected end to form a chain structure, a forward ring network link and a reverse ring network link are arranged between adjacent nodes in the chain structure, the on-site modules at the chain head and the chain tail respectively connect the forward ring network link and the reverse ring network link to the interface module, the test host (1) comprises four HSR ring network data transceiving interfaces, two HSR ring network data transceiving interfaces are connected into the forward ring network link to form the integral ring network, and the other two HSR ring network data transceiving interfaces are connected into the reverse ring network link to form the integral ring network.
3. The third generation intelligent substation integral ring network test system of claim 1, characterized in that: the control command output port of the test host (1) and the output port of the synchronous time synchronization module are both optical fiber interfaces, and the control command output port and the output port of the synchronous time synchronization module are respectively connected with a local test sub-machine (2) through one optical fiber.
4. The third generation intelligent substation integral ring network test system of claim 1, characterized in that: the synchronous timing module is an FPGA timing module.
5. The third-generation intelligent substation integral ring network test system according to any one of claims 1-4, characterized in that: the switching value on-site testing sub-machine (21) comprises a 32-way switching-in amount hard contact and a 32-way switching-out amount hard contact, the switching-in amount hard contact and the switching-out amount hard contact are all switching value contacts adopting an optical coupling structure, and the contact closing time of the switching-in amount hard contact and the switching-out amount hard contact is not more than 100 ns.
6. The third generation intelligent substation integral ring network test system of claim 5, characterized in that: the 32-way opening hard contact and the 32-way opening hard contact of the switching quantity on-site testing sub-machine (21) are standard aviation plugs.
7. The third generation intelligent substation integral ring network test system of claim 6, characterized in that: the analog quantity on-site testing sub-machine (22) comprises 6 voltage output ports and 6 current output ports, the output current of a single output port channel is not less than 30A, the precision is 0.2%, and the 6 voltage output ports and the 6 current output ports adopt standard aviation plug structures.
8. The third generation intelligent substation integral ring network test system according to claim 1, characterized in that: the preset threshold value in step 5) is 1 ms.
9. The third generation intelligent substation integral ring network test system of claim 1, wherein the step of performing the integral ring network avalanche test by the third generation intelligent substation integral ring network test system comprises:
s1) the testing host (1) sends a time tick signal to each in-situ testing sub-machine (2) through the synchronous time tick module, and each in-situ testing sub-machine (2) completes time synchronization with the testing host (1) after receiving the time tick signal; the testing host (1) is used for receiving HSR messages of all target on-site modules, wherein the target on-site modules comprise switching value on-site modules and analog quantity on-site modules in the tested integral ring network;
s2), judging the type of the test needed to be carried out, and jumping to execute the step S3 if the test is needed to be carried out and the position is changed; otherwise, jumping to execute step S8);
s3) the testing host (1) sends switching value or analog value output commands to the on-site testing sub-machines (2) corresponding to the target on-site modules through the control command output ports;
s4) testing the 1 st closed position change: all switching value on-site testing sub machines (21) synchronously output switching value on-site switching value modules for specified duration; all the analog quantity on-site testing sub-machines (22) synchronously output rated value voltage and rated value current to the on-site analog quantity module for a specified duration;
s5), the on-site testing sub-machine (2) corresponding to each target on-site module forwards the switch position of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site module in the tested integral ring network, and the target on-site module in the tested integral ring network converts the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to a test host (1) through an interface module in the tested whole ring network;
s6) the test host (1) receives the HSR message through the HSR ring network data receiving and sending interface;
s7) the testing host (1) judges whether three conditions of normal interval ring network communication, closed positions of all switching value positions and rated values of analog voltage and current are satisfied, if so, the testing is judged to be normal, and a testing result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s8) the testing host (1) sends switching value or analog value output commands to the on-site testing sub-machines (2) corresponding to the target on-site modules through the control command output ports;
s9) test fractional shift 1 st time: all switching value on-site testing submachine (21) synchronously output switching value quantiles to the on-site switching value module for specified duration; all the analog quantity on-site testing sub-machines (22) synchronously output rated value voltage and rated value current to the on-site analog quantity module for a specified duration;
s10), the on-site testing sub-machine (2) corresponding to each target on-site module forwards the switch position of the disconnecting link/circuit breaker or analog voltage/current signals to the corresponding target on-site module in the tested integral ring network, and the target on-site module in the tested integral ring network converts the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals into HSR messages to be output after receiving the switch position of the disconnecting link/circuit breaker or the analog voltage/current signals; the HSR message sequentially passes through other target local modules in the ring network, and finally the HSR message is sent to a test host (1) through an interface module in the tested whole ring network;
s11) the test host (1) receives the HSR message through the HSR ring network data receiving and sending interface;
s12) the testing host (1) judges whether three conditions of normal interval ring network communication, quantile positions of all switching values and rated values of analog voltage and current are satisfied, if so, the testing is judged to be normal, and a testing result is obtained; otherwise, judging the test abnormality, obtaining the test result and testing the cause of the abnormality; jumping to perform step S13);
s13) judging that the test is finished, and recording the test result;
s14) judging whether the number of the test rounds is equal to the preset threshold value, if not, jumping to execute the step S2); otherwise, judging to finish the ring network avalanche test.
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