CN110855522A - Electric energy meter communication quality detection method based on analytic hierarchy process - Google Patents
Electric energy meter communication quality detection method based on analytic hierarchy process Download PDFInfo
- Publication number
- CN110855522A CN110855522A CN201911107853.4A CN201911107853A CN110855522A CN 110855522 A CN110855522 A CN 110855522A CN 201911107853 A CN201911107853 A CN 201911107853A CN 110855522 A CN110855522 A CN 110855522A
- Authority
- CN
- China
- Prior art keywords
- test
- electric energy
- energy meter
- communication quality
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Environmental & Geological Engineering (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention relates to an electric energy meter communication quality detection method based on an analytic hierarchy process, which comprises the following steps: s1: constructing a communication quality level detection model of the electric energy meter, wherein the communication quality level detection model of the electric energy meter has multiple layers of elements; s2: constructing a model judgment matrix according to the communication quality level detection model of the electric energy meter; s3: carrying out consistency check on the model judgment matrix, if the consistency result is less than 0.1, carrying out step S4, otherwise, re-executing step S2; s4: and generating weights of elements of each layer in the communication quality level detection model of the electric energy meter according to the model judgment matrix, and carrying out communication test on the electric energy meter by using the communication quality level detection model of the electric energy meter with the weights to obtain a communication quality detection result of the electric energy meter. Compared with the prior art, the method has the advantages of high depth coverage rate of the test items, and capability of intuitively, objectively and scientifically reflecting the levels and differences of the communication quality of different electric energy meters.
Description
Technical Field
The invention relates to the field of electric energy meters, in particular to an electric energy meter communication quality detection method based on an analytic hierarchy process.
Background
In recent years, the intelligent electric energy meter is popularized and applied in a large range along with the construction of an intelligent power grid, metering is not the only function, whether other functions, particularly communication can work normally, is directly related to the execution of power consumption settlement and a series of power consumption management work, and the maturity and reliability of communication are the key and important basis for realizing a strong intelligent, real-time and interactive power grid.
At present, communication detection of an electric energy meter mainly comprises protocol consistency detection, function and performance tests, which mainly take basic conventional item detection, the test depth coverage rate is low, and important defects generally appear in field operation after laboratory detection is qualified, as shown in fig. 1, according to analysis of 50 cases of field electric energy meter faults in the early stage of a project, only a software part is needed, and the communication faults account for 20%. Firstly, because software is easy to break down at a special point and at the boundary and limit of input data, and because laboratory detection is mainly based on conventional function item assessment, some paths with software defects are triggered to cause faults under the condition of complicated field use; secondly, the interference of field environment electromagnetism, power grid and the like is more severe than that of a laboratory environment, and the communication reliability and fault tolerance are poor in design in a severe application environment, so that faults are caused. Meanwhile, at present, not only the communication depth test needs to be further improved, but also the quality detection means of the electric energy meter communication is deficient, and the level and the difference of the communication quality of the electric energy meters of different manufacturers cannot be objectively embodied and positioned in a comprehensive detection mode according to the qualification and the disqualification judgment of each test item.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the electric energy meter communication quality detection method based on the analytic hierarchy process, which has high deep coverage rate of test items and can intuitively, objectively and scientifically reflect the levels and the differences of the communication quality of different electric energy meters.
The purpose of the invention can be realized by the following technical scheme:
a method for detecting the communication quality of an electric energy meter based on an analytic hierarchy process comprises the following steps:
s1: constructing a communication quality level detection model of the electric energy meter, wherein the communication quality level detection model of the electric energy meter has multiple layers of elements;
s2: constructing a model judgment matrix according to the communication quality level detection model of the electric energy meter;
s3: carrying out consistency check on the model judgment matrix, if the consistency result is less than 0.1, carrying out step S4, otherwise, re-executing step S2;
s4: and generating weights of elements of each layer in the communication quality level detection model of the electric energy meter according to the model judgment matrix, and carrying out communication test on the electric energy meter by using the communication quality level detection model of the electric energy meter with the weights to obtain a communication quality detection result of the electric energy meter.
Further, the electric energy meter communication quality level detection model comprises a target layer, a criterion layer and an index layer corresponding to the criterion layer.
Further, the criteria layer includes a communication protocol conformance test, a software test, and a hardware test.
Further, the communication protocol consistency test comprises a read data test, a parameter setting test, a frame format test and a data block copying test.
Further, the software test comprises a communication response delay test, an inter-byte delay test, a communication attack test, a communication success rate test, a baud rate and redundancy test and a data attack test.
Further, the hardware test comprises a high-power radio interference test, a 485 loading capability test, a 485 common-mode communication capability test, a 485 receiving sensitivity test and a carrier overloading test.
The communication protocol consistency test, the software test and the hardware test not only comprise the conventional electric energy communication test, such as a read data test, a parameter setting test, a frame format test, a data block reading test, a communication response delay test, an inter-byte delay test and a communication success rate test, but also design a communication attack test, a baud rate and redundancy test, a data attack test, a high-power radio interference test, a 485 load carrying capacity test, a 485 common mode communication capacity test, a 485 receiving sensitivity test and a carrier overloading test based on the advanced test method of a project comprehensive black box test technology and a fault injection technology, thereby improving the depth and the breadth of a test item and further improving the accuracy and the reliability of a test result.
Furthermore, the number of the criterion layers is multiple, and the model judgment matrix comprises a criterion layer judgment matrix and a judgment matrix of each index layer relative to the corresponding criterion layer.
Further, in step S3, a consistency check is performed by yaah software.
Further, in step S4, a calculation formula of the communication quality detection result U of the electric energy meter is as follows:
ziis the score, w, of each element of the criterion layeriIs the weight of each element of the criterion layer to the target layer, YijIs the score, w, of each element in the index layerijIs the weight of each element in the index layer to the criterion layer.
Compared with the prior art, the invention has the following advantages:
(1) the invention discloses an electric energy meter communication quality detection method based on an analytic hierarchy process, which formulates a detection system based on the analytic hierarchy process and realizes comparison and objective and scientific detection of communication quality of different suppliers.
(2) In the electric energy meter communication quality detection method based on the analytic hierarchy process, the electric energy meter communication quality hierarchical detection model respectively tests the consistency of an electric energy meter communication protocol, software and hardware, and not only comprises the conventional electric energy communication tests such as a read data test, a parameter setting test, a frame format test, a data block reading test, a communication response delay test, an inter-byte delay test and a communication success rate test, but also designs a communication attack test, a baud rate and redundancy test, a data attack test, a high-power radio interference test, a 485 loading capacity test, a 485 common-mode communication capacity test, a 485 receiving sensitivity test and a carrier overloading test based on the advanced test method of a project comprehensive black box test technology and a fault injection technology, and the depth and the breadth of the test item coverage are better improved than the conventional test of the current laboratory, the accuracy and the reliability of the test result are further improved.
(3) In the electric energy meter communication quality detection method, the hardware test is a fault injection test combining a software black box test method and a typical working condition of an analog simulation field, so that the coverage depth of the electric energy meter test is improved, and the reliability of the test is improved.
(4) The consistency of the judgment matrix of the electric energy meter communication quality level detection model can be automatically detected through yaah software, and the method is convenient and quick.
Drawings
FIG. 1 is a schematic diagram of the fault probability of software of each function module on the site of an electric energy meter;
FIG. 2 is a schematic structural diagram of a communication quality level detection model of the electric energy meter according to the present invention;
FIG. 3 is a schematic diagram of yaah software performing consistency check of the judgment matrix according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of adding weights to a communication quality level detection model of an electric energy meter according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a comprehensive test verification result of the electric meter according to the embodiment of the invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment is a method for detecting the communication quality of an electric energy meter based on an analytic hierarchy process, which is characterized by comprising the following steps of:
s1: constructing an electric energy meter communication quality level detection model, wherein the electric energy meter communication quality level detection model comprises a target layer, a standard layer and an index layer corresponding to the standard layer;
s2: constructing a model judgment matrix according to the communication quality level detection model of the electric energy meter;
s3: carrying out consistency check on the model judgment matrix, if the consistency result is less than 0.1, carrying out step S4, otherwise, re-executing step S2;
s4: and generating weights of elements of each layer in the communication quality level detection model of the electric energy meter according to the model judgment matrix, and carrying out communication test on the electric energy meter by using the communication quality level detection model of the electric energy meter with the weights to obtain a communication quality detection result of the electric energy meter.
The steps are described in detail below.
1. Communication quality level detection model of electric energy meter
As shown in fig. 2, based on the project test platform research, the test items of communication mainly cover the consistency test of the protocol, software and hardware tests. The target layer is the communication quality of the intelligent electric energy meter, the criterion layer is divided into protocol consistency, software and hardware, and indexes of each criterion layer are divided into a plurality of test items according to main influence factors.
The communication test items in the detection model comprise communication conventional functionality tests, data boundary covering, limit and fault tolerance tests and fault injection tests based on the typical working conditions on site, and the data boundary covering, limit and fault tolerance tests and the fault injection tests based on the typical working conditions on site are advanced test methods based on a project comprehensive black box test technology and a fault injection technology at the same time, so that the communication reliability function is further covered.
The following is a detailed description:
1.1 overlay of routine functionality test
The detection model comprises consistency test, communication success rate test and the like of a conventional communication protocol; the test case design improves the breadth of the function test according to a black box function analysis method and an equivalence class division method.
Read data test C11: the data items required in the transcription conventions should respond with correct response frames.
Parameter setting test C12: after the parameter setting is successful, the parameter should be correctly stored.
Frame format test C13: and testing whether the frame format meets the requirements of the specification of Q/GDW 376.1-2013.
Data block copy test C14: and testing that the single-frame reading is consistent with the reading of the corresponding data block.
Communication response delay C21: the master station issues the reading data frame, and the response time of the master station after receiving the command and the terminal is within the range of 20 ms-500 ms.
Inter-byte latency test C22: the pause time between the test bytes is less than or equal to 500ms, and the terminal does not respond when the pause time exceeds the range.
Communication success rate test C24: and applying different voltages and currents to count the communication success rate.
1.2 overlay data boundary, limit, fault tolerance test
And testing the special software items according to a boundary value method, an invalid equivalence class and a pressurization method designed by the test case, so that the testing depth is improved.
Communication attack test C23: the terminal does not respond to the command frame which is sent incorrectly, and the terminal sends the correct data frame and responds correctly.
Baud rate and redundancy test C25: different baud rates are adopted, the test is not only performed at normal 1200, 2400, 4800 and 9600 baud rates, but also data at the boundary are further covered by 1200bps +/-3%, 2400bps +/-3%, 4800bps +/-3% and the like, and the communication success rate is tested.
Data attack test C26: under the condition of pressurization, a plurality of communication channels are simultaneously opened, continuous and independent data interaction, effective data, invalid data and synchronous data attack fault-tolerant test are realized.
1.3 Fault injection testing based on site typical conditions
And simulating the typical working condition of the site, and verifying the reliability of communication in the electromagnetic and power grid environments with complicated or severe sites.
High power radio interference test C31: and (4) simulating whether the communication of the electric meter is normal or not under the radio interference of the interphone in a certain frequency range.
RS485 load capacity test C32: and a resistive load is connected to the RS485 interface to simulate the communication working condition of multiple network nodes, the load impedance is gradually increased, and the limit load carrying capacity of the RS485 of the electric energy meter is tested.
RS485 common mode communication capability test C33: and adjusting the common-mode voltage, monitoring whether RS485 communication is successful, and testing the limit common-mode communication capability of the electric energy meter RS 485.
RS485 receive sensitivity test C34: and dynamically attenuating the RS485 level signal, namely monitoring the receiving voltage of the RS485 interface of the electric energy meter, and testing the ultimate receiving sensitivity and the sensitivity delay of the RS485 interface of the electric energy meter.
Carrier overload test C35: and (3) regulating capacitive and resistive power line loads, carrying out carrier meter reading for a long time, and monitoring the working state of the electric energy meter in real time.
Based on a project test platform, the detection model not only covers the routine function project test of laboratory communication, but also further covers the reliability test of communication under the condition of communication limit, illegal data attack, site typical working conditions and environment change by advanced test means. By utilizing the detection model, the quality of the communication quality of the electric energy meters of various manufacturers can be effectively and deeply evaluated.
2. Judgment matrix
An AHP method (analytic hierarchy process) is applied to an intelligent electric energy meter communication quality detection system, and a judgment matrix for pairwise comparison is further established through an established electric energy meter communication quality hierarchical detection model. According to the expert opinion and the long-term accumulated data, the judgment matrix of the criterion layer B compared with the target layer a and the judgment matrix of the index layer C compared with the criterion layer are shown in tables 1 to 4 below.
TABLE 1 criterion layer decision matrix
TABLE 2 decision matrix for index level vs. criteria level B1
TABLE 3 decision matrix for index layer versus criteria layer B2
TABLE 4 decision matrix for index layer versus criteria layer B3
3. Consistency check
As shown in fig. 3, this example uses yaah software for automatic consistency check.
The test results are as follows:
table 1 criteria layer decision matrix: consistency 0.0370<0.1, consistent.
Table 2 decision matrix for the index layer compared to criteria layer B1: consistency is 0<0.1, consistent.
Table 3 decision matrix for the index layer compared to criteria layer B2: consistency is 0<0.1, consistent.
Table 4 the decision matrix for the index layer compared to the criteria layer B3: agreement is 0.0441<0.1, agreement. By calculating a decision matrix without inconsistencies.
4. Weight calculation results of criterion layer and index layer
As shown in fig. 4, the generated detailed intermediate weight and target weight are included.
The weights of the elements of the generation criteria layer are shown in table 5.
TABLE 5 criteria layer weights
| Layer of criteria | Criterion layer weights |
| Communication protocol conformance B1 | 0.6370 |
| Software B2 | 0.2583 |
| Hardware B3 | 0.1047 |
The weights for the calculated index layers are shown in table 6.
TABLE 6 index layer weights
5. Calculation formula for communication quality detection result of electric energy meter
According to the weights of the criterion layer and the index layer, namely the meter 5 and the meter 6, the communication quality detection result of the electric energy meter can be calculated through a calculation formula of a communication quality detection model of the electric energy meter or according to automatic test software. The calculation formula of the communication quality detection result U of the electric energy meter is as follows:
ziis the elements B of the criterion layeriScore of (a), wiIs the elements B of the criterion layeriWeight to target layer, YijIs each element C in the index layerijScore of (a), wijIs an indexEach element C in the layerijWeight to the criteria layer.
The communication quality detection result of the electric energy meter of the embodiment is shown in fig. 5.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A method for detecting the communication quality of an electric energy meter based on an analytic hierarchy process is characterized by comprising the following steps:
s1: constructing an electric energy meter communication quality level detection model by adopting an analytic hierarchy process, wherein the electric energy meter communication quality level detection model has multiple layers of elements;
s2: constructing a model judgment matrix according to the communication quality level detection model of the electric energy meter;
s3: carrying out consistency check on the model judgment matrix, if the consistency result is less than 0.1, carrying out step S4, otherwise, re-executing step S2;
s4: and generating weights of elements of each layer in the communication quality level detection model of the electric energy meter according to the model judgment matrix, and carrying out communication test on the electric energy meter by using the communication quality level detection model of the electric energy meter with the weights to obtain a communication quality detection result of the electric energy meter.
2. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 1, wherein the electric energy meter communication quality hierarchy detection model comprises a target layer, a criterion layer and an index layer corresponding to the criterion layer.
3. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 2, wherein the criterion layer comprises a communication protocol conformance test, a software test and a hardware test.
4. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 3, wherein the communication protocol conformance test comprises a read data test, a parameter setting test, a frame format test and a data block reading test.
5. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 3, wherein the software test comprises a communication response delay test, an inter-byte delay test, a communication attack test, a communication success rate test, a baud rate and redundancy test, and a data attack test.
6. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 3, wherein the hardware test comprises a high power radio interference test, a 485 load capacity test, a 485 common mode communication capacity test, a 485 receive sensitivity test and a carrier overload test.
7. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 2, wherein the number of the criterion layers is multiple, and the model judgment matrix comprises a criterion layer judgment matrix and a judgment matrix of each index layer relative to the corresponding criterion layer.
8. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 2, wherein in the step S4, the calculation formula of the electric energy meter communication quality detection result U is:
ziis the score, w, of each element of the criterion layeriIs the weight of each element of the criterion layer to the target layer, YijIs the score, w, of each element in the index layerijIs the weight of each element in the index layer to the criterion layer.
9. The analytic hierarchy process-based electric energy meter communication quality detection method of claim 1, wherein in the step S3, consistency check is performed through yaah software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911107853.4A CN110855522A (en) | 2019-11-13 | 2019-11-13 | Electric energy meter communication quality detection method based on analytic hierarchy process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911107853.4A CN110855522A (en) | 2019-11-13 | 2019-11-13 | Electric energy meter communication quality detection method based on analytic hierarchy process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110855522A true CN110855522A (en) | 2020-02-28 |
Family
ID=69601723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911107853.4A Pending CN110855522A (en) | 2019-11-13 | 2019-11-13 | Electric energy meter communication quality detection method based on analytic hierarchy process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110855522A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113453114A (en) * | 2021-06-30 | 2021-09-28 | Oppo广东移动通信有限公司 | Encoding control method, encoding control device, wireless headset and storage medium |
| CN116956199A (en) * | 2023-09-19 | 2023-10-27 | 江苏百维能源科技有限公司 | Big data analysis system and method for intelligent ammeter information interaction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103902451A (en) * | 2014-03-26 | 2014-07-02 | 国家电网公司 | Intelligent electricity meter software quality evaluation method |
| US20140219123A1 (en) * | 2013-02-01 | 2014-08-07 | Rohde & Schwarz Gmbh & Co. Kg | Test apparatus and method for testing ip-based mobile communications terminals |
| CN110221976A (en) * | 2019-05-28 | 2019-09-10 | 广西电网有限责任公司电力科学研究院 | A kind of measuring terminal software quality method for quantitatively evaluating based on measurement technology |
-
2019
- 2019-11-13 CN CN201911107853.4A patent/CN110855522A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140219123A1 (en) * | 2013-02-01 | 2014-08-07 | Rohde & Schwarz Gmbh & Co. Kg | Test apparatus and method for testing ip-based mobile communications terminals |
| CN103902451A (en) * | 2014-03-26 | 2014-07-02 | 国家电网公司 | Intelligent electricity meter software quality evaluation method |
| CN110221976A (en) * | 2019-05-28 | 2019-09-10 | 广西电网有限责任公司电力科学研究院 | A kind of measuring terminal software quality method for quantitatively evaluating based on measurement technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113453114A (en) * | 2021-06-30 | 2021-09-28 | Oppo广东移动通信有限公司 | Encoding control method, encoding control device, wireless headset and storage medium |
| CN116956199A (en) * | 2023-09-19 | 2023-10-27 | 江苏百维能源科技有限公司 | Big data analysis system and method for intelligent ammeter information interaction |
| CN116956199B (en) * | 2023-09-19 | 2023-11-28 | 江苏百维能源科技有限公司 | Big data analysis system and method for intelligent ammeter information interaction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107819645B (en) | Internet of things testing method based on software simulation | |
| CN103840967B (en) | A kind of method of fault location in power telecom network | |
| CN103001328A (en) | Fault diagnosis and assessment method of intelligent substation | |
| CN102185664B (en) | Automatic testing system of radio frequency passive device | |
| CN104299042A (en) | Nuclear power station accident risk prediction method and system | |
| CN101354423A (en) | System and method for model building of impact load based on actual measurement | |
| CN113286315B (en) | Load balance judging method, device, equipment and storage medium | |
| CN109902373A (en) | A kind of area under one's jurisdiction Fault Diagnosis for Substation, localization method and system | |
| CN110855522A (en) | Electric energy meter communication quality detection method based on analytic hierarchy process | |
| CN112180764A (en) | Controller with multiple fault diagnosis and display functions | |
| CN117692940B (en) | Microwave system performance detection method based on microwave link | |
| CN104254083A (en) | Method and device for predicting business hot spots | |
| WO2019140553A1 (en) | Method and device for determining health index of power distribution system and computer storage medium | |
| CN113408804A (en) | Electricity stealing behavior detection method, system, terminal equipment and storage medium | |
| CN110334385B (en) | Test method, device and equipment for central controller of comprehensive energy system | |
| CN104038388A (en) | Distributed automatic testing system and automatic testing method for Internet of Things | |
| CN205692170U (en) | A kind of battalion auxiliary tone data pretreatment | |
| CN116430749A (en) | Simulation test method and device for power monitoring system, medium and electronic equipment | |
| CN114595746A (en) | Method, device, equipment and storage medium for classifying power distribution network fault reasons | |
| CN110839257B (en) | Network quality evaluation method, device and storage medium | |
| CN114647933A (en) | State detection method and device for converter valve | |
| CN110391935B (en) | Measurement degree evaluation method and system considering information physical coupling characteristics and information disturbance | |
| Fan et al. | An improved analytic hierarchy process model on software quality evaluation | |
| CN115883414B (en) | Network testing method, device, equipment and storage medium | |
| CN111273124B (en) | Power distribution network state estimation application function test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |
|
| RJ01 | Rejection of invention patent application after publication |