District intelligent fusion terminal detection system supported by multiple protocols

Abstract

The invention discloses a multi-protocol supported transformer area intelligent fusion terminal detection system, which is used for detecting a transformer area intelligent fusion terminal and a functional module thereof, and is characterized by comprising front-end processor software connected with a standard source cabinet and a test tool cabinet through a communication service unit, the standard source cabinet is connected with the test tool cabinet through a two-way communication line; the standard source cabinet comprises a program control power source, a three-phase standard meter, a standard clock source and a positioning system; the test tool cabinet comprises a communication interface test unit, a complete machine power consumption test unit, a loop inspection test unit, a station test control unit and a station connection unit. The front-end processor software deploys the standard source cabinet and the test tool cabinet through the communication service unit to realize power supply adaptability detection, grounding fault resistance capability detection, power consumption detection, alternating current analog quantity experiment detection, state quantity experiment detection and data acquisition processing experiment detection of the SCU to be detected; loop state inspection experiment detection and clock and positioning experiment detection are carried out.

Description

Technical Field

[0001] The present invention relates to the field of multi-terminal fusion detection, and in particular to a multi-protocol supported intelligent fusion terminal detection system for a substation. Background Art

[0002] With the rapid development of smart grid technology, substation management, as an important part of the power grid system, has an important role to play in improving the operating efficiency and reliability of the entire power grid by improving its automation and intelligence level. Substation intelligent fusion terminal, as a key device for realizing intelligent management of substations, undertakes multiple functions such as data collection, status monitoring, and remote control. It is an important link between the substation management system and the field equipment of the power grid.

[0003] In order to ensure that the intelligent fusion terminal in the substation can operate stably and reliably, the accuracy and consistency of its performance are crucial. This requires not only that the terminal itself has high electrical performance and data processing capabilities, but also that it can support multiple communication protocols to adapt to different superior management systems and subordinate equipment. However, due to the large number of manufacturers of intelligent fusion terminals in the substation market, terminals produced by different manufacturers may differ in performance indicators, protocol support, etc., which requires a standardized and systematic detection system to conduct comprehensive performance and protocol consistency detection on these terminals.

[0004] Traditional detection methods mostly rely on manual operations, which are not only inefficient but also easily affected by human factors, resulting in inaccurate and inconsistent detection results. In addition, with the increasing complexity of terminal technology, traditional detection methods are difficult to cover all performance indicators and protocol requirements. There is an urgent need for a terminal detection system that can automatically perform multiple test tasks and support multi-protocol detection.

[0005] In view of the above problems, the present invention provides a multi-protocol supported intelligent fusion terminal detection system for substations to solve the above problems. Summary of the invention

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-protocol supported intelligent fusion terminal detection system for a substation, which is used to detect the intelligent fusion terminal and its functional modules in the substation, and is characterized by comprising: a front-end software, the front-end software is connected to a standard source cabinet and a test tool cabinet through a communication service unit, and the standard source cabinet is connected to the test tool cabinet through a two-way communication line;

[0007] The standard source cabinet includes a programmable power source, a three-phase standard meter, a standard clock source and a positioning system; the test tool cabinet includes a communication interface test unit, a whole machine power consumption test unit, a loop inspection test unit, a station test control unit and a station connection unit; and

[0008] The front-end software deploys the standard source cabinet and the test tooling cabinet through the communication service unit to realize power adaptability detection, ground fault resistance detection, power consumption detection, AC analog quantity experiment detection, state quantity test detection, data acquisition and processing experiment detection, loop status inspection experiment detection and clock and positioning experiment detection of the SCU to be tested.

[0009] Further, preferably, the power adaptability detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be detected through a first wire, and the program-controlled three-phase power source and the SCU to be detected being connected to the front-end software through a communication line, the front-end software collecting state data of the program-controlled three-phase power source and the SCU to be detected through the communication line, and the front-end software performing detection and analysis on the collected test data;

[0010] The anti-ground fault capability detection circuit diagram includes the program-controlled three-phase power source being connected to the station test control unit via a second wire, the station test control unit outputting a voltage increase of 1.9 and transmitting it to the SCU to be detected, and the program-controlled three-phase power source, the station test control unit and the SCU to be detected being connected to the front-end software communication line, the front-end software collecting the status data of the program-controlled three-phase power source, the station test control unit and the SCU to be detected via the communication line, and performing detection and analysis on the collected status data;

[0011] The power consumption detection connection circuit diagram includes the programmable three-phase power source being connected to the whole machine power consumption test unit via a second wire, the whole machine power consumption test unit being connected to the SCU to be tested, and the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested being connected to the front-end software communication line, the front-end software collecting status data of the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested via the communication line, and performing detection and analysis on the collected status data.

[0012] Further, preferably, the AC analog quantity experimental detection circuit diagram includes the program-controlled three-phase power source being connected to the three-phase standard meter through a first wire, the three-phase standard meter being connected to the SCU to be tested, and the program-controlled three-phase power source, the three-phase standard meter and the SCU to be tested being connected to the front-end software communication line, the front-end software collecting the status data of the program-controlled three-phase power source, the three-phase standard meter and the SCU to be tested through the communication line, and performing detection and analysis on the collected status data;

[0013] The state quantity test detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be tested through a second wire, the SCU to be tested being connected to the station test control unit, the station test control unit being used to adjust the state of the SCU to be tested, the program-controlled three-phase power source and the station test control unit being connected to the front-end software through a communication line, the front-end software being used to collect state data of the program-controlled three-phase power source and the station test control unit, and to perform detection and analysis on the collected state data;

[0014] The data acquisition and processing experimental detection circuit diagram includes the programmable three-phase power source being connected to the SCU to be tested via a first wire, the SCU to be tested being connected to the virtual electric meter via an RS485 communication interface, the programmable three-phase power source and the SCU to be tested being connected to the front-end software via a communication line, and the front-end software being used to collect status data of the programmable three-phase power source and the SCU to be tested, and to perform detection and analysis on the collected status data.

[0015] Further, preferably, the circuit diagram of the loop status inspection experiment includes that the program-controlled three-phase power source is connected to the SCU to be inspected through a first wire, and is connected to the loop inspection test unit through a third wire, the loop inspection test unit is connected to the SCU to be inspected through a third wire, and the program-controlled three-phase power source and the loop inspection test unit are connected to the front-end software through a communication line, and the front-end software is used to collect status data of the program-controlled three-phase power source and the loop inspection test unit, and detect and analyze the collected status data;

[0016] The clock and positioning test detection circuit diagram includes the programmable three-phase power source connected to the SCU to be tested through a second wire, the SCU to be tested is connected to the workstation control test unit; and the standard clock and positioning system is connected to the workstation control test unit; the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit are connected to the front-end software through a communication line, and the front-end software is used to collect status data of the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit, and perform detection and analysis on the collected status data.

[0017] Further, preferably, the first wire is used to transmit voltage and current, the second wire is used to transmit voltage, and the third wire is used to transmit current.

[0018] Further, preferably, it also includes a measurement and control equipment cabinet and a measurement and control tool box, and the measurement and control equipment and the measurement and control tool box are both communicatively connected with the front-end software;

[0019] The measurement and control equipment cabinet includes: a purification power supply, a detection device, and a human-computer interaction device; the measurement and control tool box includes: a terminal station control, a virtual module unit, a communication service unit, a virtual terminal unit, and a module adapter unit; the terminal station control, the virtual module unit, and the communication service unit are connected to the SCU to be tested, and the virtual terminal unit and the module adapter unit are connected to the module to be tested;

[0020] The front-end software realizes the load capacity detection, terminal interchangeability detection and module power consumption detection of the SCU to be inspected, the virtual SCU and the module to be inspected by deploying the measurement and control equipment cabinet and the measurement and control tool box.

[0021] Further, preferably, the load capacity detection connection circuit includes the purification power supply being connected to the SCU to be detected, the SCU to be detected being connected to the virtual module unit, the virtual module unit being connected to the DC voltage and current sampling unit and the electronic load; the SCU to be detected, the virtual module, the electronic load, the DC voltage and current sampling unit are connected to the front-end software, and the front-end software is used to collect status data of the SCU to be detected, the virtual module unit, the electronic load, and the DC voltage and current sampling unit, and detect the status data.

[0022] Further, preferably, the terminal interchangeability detection connection circuit includes the load capacity detection connection circuit including the purification power supply connected to the SCU to be inspected, the SCU to be inspected is connected to the virtual module unit, and the virtual module unit is connected to the communication service unit; the front-end software is connected to the SCU to be inspected, the virtual module unit and the communication service unit through the TCP / IP port and collects status data, and the front-end software detects the status data.

[0023] Further, preferably, the module power consumption detection circuit connection diagram includes the purification power supply being connected to the virtual SCU, the virtual SCU being connected to the DC voltage and current sampling unit and the function module to be detected respectively, the DC voltage and current sampling unit being connected to the function module to be detected, and the function module to be detected being connected to the module adapter unit;

[0024] The virtual SCU, the DC voltage and current sampling unit and the module adapter unit are connected to the front-end software, and the front-end software is used to collect status data of the virtual SCU, the DC voltage and current sampling unit and the module adapter unit, and detect the status data.

[0025] Furthermore, preferably, the front-end software is equipped with a software platform for controlling the execution of all test items, automatically processing and recording test data, and generating test reports.

[0026] Compared with the prior art, the present invention provides a multi-protocol supported intelligent fusion terminal detection system for substations, which has the following beneficial effects:

[0027] The present invention can conduct comprehensive detection of the intelligent fusion terminal and its functional modules in the substation area, including power supply adaptability, AC analog quantity processing capability, basic functions and protocol consistency, etc., which not only helps to comprehensively evaluate the performance of the terminal, but also ensures that the terminal can meet the high standard requirements of power system automation;

[0028] The present invention completes the automated operation mode of all test items through one-time wiring, significantly reducing the intervention of testers in the test process and improving the detection efficiency. At the same time, the automated test process also reduces the errors caused by human operation and improves the accuracy of the test results.

[0029] The present invention supports the detection of multiple communication protocols, can adapt to the intelligent fusion terminals of different manufacturers, promotes the interoperability between different systems and devices, and contributes to the overall performance and stability of the power system;

[0030] The present invention performs standardized performance and protocol consistency detection on the intelligent fusion terminal in the substation area, which helps to improve the quality control level of products and promote the standardized development of the power equipment production industry;

[0031] The present invention ensures that the high performance and consistency of the intelligent fusion terminal in the substation area are crucial to maintaining the stable operation of the power system. The present invention helps to eliminate potential equipment failure risks through accurate detection, thereby improving the safety and reliability of the entire power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a composition diagram of the functional and protocol consistency test component system of the present invention;

[0033] Figure 2 It is a power supply change test detection logic diagram of the present invention;

[0034] Figure 3 It is a detection logic diagram of the anti-ground fault capability test of the present invention;

[0035] Figure 4 A power consumption test detection logic diagram of the present invention;

[0036] Figure 5 It is the AC analog quantity test detection logic diagram of the present invention;

[0037] Figure 6 It is the state quantity test detection logic diagram of the present invention;

[0038] Figure 7It is a data acquisition and processing test detection logic diagram of the present invention;

[0039] Figure 8 It is a detection logic diagram of the loop status inspection test of the present invention;

[0040] Fig. 9 It is the clock and positioning test detection logic diagram of the present invention;

[0041] Fig.10 The interchangeability and modular functionality testing component architecture of the present invention;

[0042] Fig.11 It is a load capacity detection logic diagram of the present invention;

[0043] Fig.12 It is a terminal interchangeability detection logic diagram of the present invention;

[0044] Fig.13 It is a module power consumption detection logic diagram of the present invention; DETAILED DESCRIPTION

[0045] Reference Figures 1 to 13 , the present invention provides a technical solution: a multi-protocol supported intelligent fusion terminal detection system for a substation, used for detecting an intelligent fusion terminal in a substation and its functional modules, characterized in that: it comprises: a front-end processor software, the front-end processor software is connected to a standard source cabinet and a test tool cabinet through a communication service unit, and the standard source cabinet is connected to the test tool cabinet through a two-way communication line;

[0046] The standard source cabinet includes a programmable power source, a three-phase standard meter, a standard clock source and a positioning system; the test tool cabinet includes a communication interface test unit, a whole machine power consumption test unit, a loop inspection test unit, a station test control unit and a station connection unit; and

[0047] The front-end software deploys the standard source cabinet and the test tooling cabinet through the communication service unit to realize power adaptability detection, ground fault resistance detection, power consumption detection, AC analog quantity experiment detection, state quantity test detection, data acquisition and processing experiment detection, loop status inspection experiment detection and clock and positioning experiment detection of the SCU to be tested.

[0048] The specific parameters of the programmable three-phase power source are:

[0049] Output voltage

[0050] a) Voltage range: 3×220V / 380V;

[0051] b) Adjustment range: Each range is continuously adjustable within 0% to 120%, and the adjustment fineness is better than 0.01%;

[0052] c) Waveform distortion: ≤0.3% (non-capacitive load);

[0053] d) Stability: <0.05% (120s);

[0054] e) Maximum output capacity: not less than 35VA / station per phase.

[0055] Output Current

[0056] a) Current range: 15mA-25A;

[0057] b) Adjustment range: adjustable within the range of 0% to 120%, and the adjustment fineness is better than 0.01%;

[0058] c) Waveform distortion: ≤0.3%;

[0059] d) Stability: <0.05% (120s);

[0060] e) Maximum output capacity: not less than 40VA / station per phase.

[0061] Output Phase

[0062] a) Phase shift range: 0-359.99°;

[0063] b) Adjustment fineness: 0.01°.

[0064] Output frequency

[0065] a) Frequency range: (45-55) Hz;

[0066] b) Adjustment fineness: Continuously adjustable within the output range, with an adjustment fineness better than 0.01Hz.

[0067] Harmonic output:

[0068] It can output 2-21 harmonics, with a content of <40%; any 3 harmonics superimposed, with a cumulative content of <40%; it supports voltage and current phase output.

[0069] Output power stability: <0.05% (120s).

[0070] The specific parameters of the three-phase standard meter are:

[0071] (1) Accuracy level: 0.05;

[0072] (2) Can simultaneously measure and display voltage (V), current (A), active power (W), reactive power (Var), frequency (Hz), power factor (PF), phase angle (θ), apparent power (S), etc.

[0073] Specific parameters of standard clock source and positioning system:

[0074] (1) Stability: 5×10-8;

[0075] (2) Accuracy: 2×10-7;

[0076] (3) Maximum allowable error: ±0.05s / d;

[0077] (4) The positioning accuracy should meet the requirements that the horizontal error is no more than 5m and the elevation error is no more than 10m.

[0078] The communication service unit is composed of a switch and a communication unit, providing a communication channel within the device.

[0079] Communication interface test unit:

[0080] (1) M-BUS virtual meter: 2 channels / meter position;

[0081] (2) RS-485 virtual meter: 4 channels / meter position;

[0082] (3) HPLC / dual-mode virtual meter: 1 channel / meter position;

[0083] (4) Remote signal / pulse detection: 4 channels / table;

[0084] (5) Remote control detection: 2 channels / table.

[0085] (6) PT100 detection: 1 channel / epitope;

[0086] (7) Voltage / current analog detection: 1 channel / meter position;

[0087] (8) CAN bus detection: 1 channel / table;

[0088] (9) Loop inspection: 1 loop / station.

[0089] Machine power consumption test unit:

[0090] 1) Automatic measurement of voltage circuit and auxiliary power consumption

[0091] (2) Automatic measurement of current loop apparent power, active power and impedance

[0092] (3) Static power consumption and dynamic power consumption measurement

[0093] (4) Support RS485, carrier, micro-power wireless communication

[0094] (5) Voltage output range: 3X57.7~380V

[0095] (6) Current range: 3X 0.1~25A

[0096] (7) Power consumption measurement range: Measurement range: 0.1VA-20VA

[0097] (8) Voltage loop power consumption measurement accuracy: ±0.5%

[0098] (9) Current loop power consumption measurement accuracy: ±3%.

[0099] Loop inspection test unit:

[0100] It has circuit state simulations such as normal connection of TA secondary circuit, shunt of TA primary circuit, shunt of TA secondary circuit, open circuit of TA secondary circuit, and series connection of rectifier device in TA secondary circuit.

[0101] Workstation docking unit:

[0102] It is equipped with voltage and current connection pins and weak current terminal connection probes. The voltage and current connection pins should meet the safety operation requirements of continuous excessive input test under normal crimping. The weak current terminal connection probe should meet the requirements of completing all functional tests in one crimping.

[0103] Station test control unit:

[0104] (1) It has a remote signal output interface and supports anti-shake function. The anti-shake time can be set from 10 to 6000ms; it supports setting the delay of two-way remote signal output; it supports setting the frequency, which is not less than 1Hz.

[0105] (2) Equipped with a clock pulse input interface.

[0106] (3) It has current loop bypass function.

[0107] (4) It has voltage switching protection function.

[0108] As a preferred embodiment, Figure 2 As shown, the power adaptability detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be detected through a first wire, and the program-controlled three-phase power source and the SCU to be detected being connected to the front-end software through a communication line, the front-end software collecting the state data of the program-controlled three-phase power source and the SCU to be detected through the communication line, and the front-end software performing detection and analysis on the collected test data;

[0109] The power adaptability test includes power phase failure test, power voltage change test, frequency change test, and reverse phase sequence test. According to the requirements of 7.3.1, 7.3.2, 7.3.3, and 7.3.4 of Q / GDW XXXX-2021 Intelligent Fusion Terminal Detection Specification, the control device outputs the corresponding voltage / frequency / phase sequence, etc., to verify whether the terminal meets the requirements under the relevant power supply state.

[0110] The program-controlled three-phase power source provides power input to the SCU to be tested. The front-end software controls the program-controlled three-phase power source to output the corresponding voltage / frequency / phase sequence. The SCU to be tested should work normally.

[0111] The power quality data statistical test is based on the requirements of 7.5.7 of Q / GDW XXXX-2021 Substation Intelligent Fusion Terminal Detection Specifications, and verifies whether the terminal meets the requirements by controlling changes in the output voltage / frequency / phase sequence of the control device.

[0112] The programmable three-phase power source provides power input to the SCU to be inspected. The front-end software controls the changes in the output voltage / frequency / phase sequence of the programmable three-phase power source. After a period of time, the terminal should be able to correctly record the corresponding voltage failure records, power factor over-limit segment intervals, voltage / current imbalance, frequency, and harmonic statistics.

[0113] Data transmission tests include terminal maintenance function test, data transmission channel test, module ID consistency test, and APP ID consistency test. According to the requirements of 7.5.3 and 7.5.4 of Q / GDW XXXX—2021 Intelligent Fusion Terminal Detection Specification, the terminal parameters are read or set by software to verify whether the terminal meets the requirements.

[0114] The program-controlled three-phase power source provides power input to the SCU to be tested, and the software reads or sets the terminal parameters for comparison and verification.

[0115] like Figure 2 As shown, the anti-ground fault capability detection circuit diagram includes the program-controlled three-phase power source being connected to the station test control unit through a second wire, the station test control unit outputting a voltage boost of 1.9 and transmitting it to the SCU to be detected, and the program-controlled three-phase power source, the station test control unit and the SCU to be detected being connected to the front-end software communication line, the front-end software collecting the status data of the program-controlled three-phase power source, the station test control unit and the SCU to be detected through the communication line, and performing detection and analysis on the collected status data;

[0116] The ground fault resistance test is carried out in accordance with the requirements of 7.3.5 of Q / GDW XXXX-2021 Area Intelligent Fusion Terminal Detection Specifications. The terminal ground fault is simulated by the workstation test control unit and maintained for 4 hours to verify whether the terminal meets the requirements.

[0117] Power outage tests include backup power supply test, power failure data and clock retention test. According to the requirements of 7.3.6 and 7.3.7 of Q / GDW XXXX-2021 Intelligent Fusion Terminal Detection Specification, the power source is controlled to be cut off to verify whether the terminal and backup power supply meet the requirements.

[0118] The program-controlled three-phase power source provides power input to the SCU to be inspected. When the terminal backup battery is sufficiently charged, the front-end software controls the program-controlled three-phase power source to stop voltage output. The terminal backup power supply should work normally. After power supply is restored, the terminal data and clock should be maintained.

[0119] The programmable three-phase power source provides power input to the SCU to be tested. The front-end software controls the station test control unit to output 1.9 times the voltage, simulating a terminal grounding fault and maintaining it for 4 hours. During and after the test, the terminal should not be damaged and the saved data should not be changed.

[0120] like Figure 4 As shown, the power consumption experiment detection connection circuit diagram includes the programmable three-phase power source being connected to the whole machine power consumption test unit through a second wire, the whole machine power consumption test unit being connected to the SCU to be tested, and the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested being connected to the front-end software communication line, the front-end software collects the status data of the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested through the communication line, and performs detection and analysis on the collected status data.

[0121] The power consumption test verifies whether the terminal power consumption meets the requirements in steady state according to the requirements of 7.3.8 of Q / GDW XXXX-2021 Intelligent Fusion Terminal Detection Specification. Figure 4 shown.

[0122] The program-controlled three-phase power source provides power input to the SCU to be tested. After the terminal is fully equipped with all functional modules (in non-communication state) and enters the steady state, the front-end software controls the whole machine power consumption test unit to test the steady-state power consumption of the terminal.

[0123] As a preferred embodiment, Figure 5 As shown, the AC analog quantity experimental detection circuit diagram includes the program-controlled three-phase power source being connected to the three-phase standard meter through a first wire, the three-phase standard meter being connected to the SCU to be detected, and the program-controlled three-phase power source, the three-phase standard meter and the SCU to be detected being connected to the front-end software communication line, the front-end software collecting the state data of the program-controlled three-phase power source, the three-phase standard meter and the SCU to be detected through the communication line, and detecting and analyzing the collected state data;

[0124] The AC analog quantity test includes the basic error test of AC analog quantity, the input influence test of AC analog quantity, and the continuous over-input test. According to the requirements of 7.4.1 of Q / GDW XXXX-2021 intelligent fusion terminal detection specification for substations, the corresponding voltage / current / power output by the control device is used to verify whether the terminal AC analog quantity error meets the requirements. The detection logic is as follows: Figure 5 shown.

[0125] The corresponding voltage / current / power factor / frequency / unbalance / harmonics, etc. are output through the programmable three-phase power source, the terminal sampling value is read as the measured value, the three-phase standard table sampling value is read as the standard value, and the error is calculated according to the requirements of Q / GDW XXXX—2021 Substation Intelligent Fusion Terminal Detection Specification C.1.

[0126] like Figure 6 As shown, the state quantity test detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be tested through a second wire, the SCU to be tested being connected to the station test control unit, the station test control unit being used to adjust the state of the SCU to be tested, the program-controlled three-phase power source and the station test control unit being connected to the front-end software through a communication line, the front-end software being used to collect state data of the program-controlled three-phase power source and the station test control unit, and to perform detection and analysis on the collected state data;

[0127] The state quantity test includes state quantity input test, remote signal anti-shake test, event sequence recording (SOE) station resolution test, remote signal avalanche test and virtual remote signal test. According to the requirements of Q / GDW XXXX-2021 intelligent fusion terminal detection specification 7.5.1, the state quantity output of the control device changes to verify whether the terminal state quantity meets the requirements. The detection logic is as follows Figure 6 shown.

[0128] The program-controlled three-phase power source provides power input to the SCU to be tested. The front-end software controls the workstation test control unit to output different telesignaling status signals according to the project test requirements. The terminal should be able to correctly detect the corresponding state change and change time.

[0129] like Figure 7 As shown, the data acquisition and processing experimental detection circuit diagram includes the programmable three-phase power source being connected to the SCU to be tested through a first wire, the SCU to be tested being connected to the virtual electric meter through an RS485 communication interface, the programmable three-phase power source and the SCU to be tested being connected to the front-end software through a communication line, and the front-end software being used to collect status data of the programmable three-phase power source and the SCU to be tested, and to perform detection and analysis on the collected status data.

[0130] The data collection and processing test includes data collection test, electric energy data processing test and data collection reliability test. According to the requirements of 7.13.1, 7.5.5 and 7.5.6 of Q / GDW XXXX-2021 intelligent fusion terminal detection specification, the virtual meter is collected through the control terminal to verify whether the terminal data collection and processing function meets the requirements. Figure 7 shown.

[0131] The programmable three-phase power source provides power input to the SCU to be tested. The system test software provides a virtual meter for the terminal to collect downlink data. By reading the terminal's real-time data, daily frozen data, monthly frozen data and other data as the tested data, the data in the virtual meter is obtained as the standard data for comparison and verification.

[0132] The event recording and reporting test is carried out in accordance with the requirements of 7.5.1.3 and 7.5.2 of Q / GDW XXXX-2021 Substation Intelligent Fusion Terminal Detection Specifications. The abnormal state of the circuit output by the control device is controlled to control the virtual meter to generate abnormal state data to verify whether the terminal event recording and reporting functions meet the requirements.

[0133] The programmable three-phase power source provides power input to the SCU to be inspected. The front-end software controls the abnormal state of the output circuit of the programmable three-phase power source (such as phase failure, voltage loss, etc.), and controls the virtual meter to generate abnormal state data (such as flying away, stopping, etc.). The terminal should be able to correctly record and report the corresponding event records.

[0134] As a preferred embodiment, Figure 8 As shown, the circuit diagram of the loop status inspection experiment includes that the program-controlled three-phase power source is connected to the SCU to be inspected through a first wire, and is connected to the loop inspection test unit through a third wire, the loop inspection test unit is connected to the SCU to be inspected through a third wire, and the program-controlled three-phase power source and the loop inspection test unit are connected to the front-end software through a communication line, and the front-end software is used to collect the status data of the program-controlled three-phase power source and the loop inspection test unit, and detect and analyze the collected status data;

[0135] The loop status inspection test is carried out in accordance with the requirements of 7.5.8 of Q / GDW XXXX-2021 Substation Intelligent Fusion Terminal Detection Specifications. The loop status abnormality is simulated by controlling the loop inspection test unit of the device to verify whether the terminal meets the requirements.

[0136] The program-controlled three-phase power source provides power input to the SCU to be tested. The front-end software controls the loop inspection test unit to simulate abnormal loop status. The terminal should be able to correctly identify and record the corresponding events.

[0137] like Fig. 9As shown, the clock and positioning test detection circuit diagram includes the programmable three-phase power source connected to the SCU to be tested through a second wire, the SCU to be tested is connected to the workstation control test unit; and the standard clock and positioning system is connected to the workstation control test unit; the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit are connected to the front-end software through a communication line, and the front-end software is used to collect status data of the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit, and detect and analyze the collected status data.

[0138] The clock and positioning test is carried out in accordance with the requirements of 7.7 of Q / GDW XXXX-2021 Area Intelligent Fusion Terminal Detection Specification, and verifies whether the terminal meets the requirements through the standard clock source and positioning system.

[0139] The program-controlled three-phase power source provides power input to the SCU to be tested. The front-end software controls the standard clock source to output the standard clock signal. The station control test unit collects the second pulse output by the terminal, calculates the error, and verifies whether the terminal clock meets the technical specifications. The front-end software obtains the location information provided by the positioning system, reads the longitude and latitude of the terminal, and compares it to verify whether the terminal positioning meets the technical specifications.

[0140] The first conductor is used to transmit voltage and current, the second conductor is used to transmit voltage, and the third conductor is used to transmit current.

[0141] As shown in the figure, as a preferred embodiment, it also includes a measurement and control equipment cabinet and a measurement and control tool box, and the measurement and control equipment and the measurement and control tool box are both connected to the front-end software for communication;

[0142] The measurement and control equipment cabinet includes: a purification power supply, a detection device, and a human-computer interaction device; the measurement and control tool box includes: a terminal station control, a virtual module unit, a communication service unit, a virtual terminal unit, and a module adapter unit; the terminal station control, the virtual module unit, and the communication service unit are connected to the SCU to be tested, and the virtual terminal unit and the module adapter unit are connected to the module to be tested;

[0143] The front-end software realizes the load capacity detection, terminal interchangeability detection and module power consumption detection of the SCU to be inspected, the virtual SCU and the module to be inspected by deploying the measurement and control equipment cabinet and the measurement and control tool box.

[0144] The virtual terminal / module unit mainly includes the local communication module interface, remote communication module interface, expansion module interface, etc. The size and interface definition of the module interface shall meet the type specification requirements of the relevant terminals and modules:

[0145] (1) Communication mode: Supports USB3.0 (backward compatible with USB2.0) and Ethernet communication modes;

[0146] (2) Ethernet transmission rate: 10 / 100Mbps full-duplex.

[0147] The communication service unit is composed of a switch and a communication unit, providing a communication channel within the device.

[0148] The module adaptation unit provides the auxiliary test signals required by the functional modules, and provides auxiliary measurement signals such as entity STA, Beidou, and expansion module adaptation signals.

[0149] Terminal station control mainly realizes functions such as terminal crimping and power supply control.

[0150] As a preferred embodiment, Fig.11 As shown, the load capacity detection connection circuit includes the connection between the purification power supply and the SCU to be detected, the SCU to be detected is connected to the virtual module unit, and the virtual module unit is connected to the DC voltage and current sampling unit and the electronic load; the SCU to be detected, the virtual module, the electronic load, the voltage and current sampling unit are connected to the front-end software, and the front-end software is used to collect the status data of the SCU to be detected, the virtual module unit, the electronic load, and the DC voltage and current sampling unit, and detect the status data.

[0151] The SCU load capacity test is mainly based on 7.5.4.2 and 7.5.4.3 in the Q / GDW XXXX-2021 Substation Intelligent Fusion Terminal Detection Specification, to test whether the power quality and load capacity of the SCU functional module interface meet the technical specification requirements.

[0152] The purified power supply provides power input to the SCU to be inspected. The virtual module realizes pure resistive load switching in / out, short circuit, and voltage sampling, receives the front-end software status control instructions, and uploads voltage sampling data at the same time. The electronic load carries out transient peak current detection. The DC voltage and current sampling unit realizes ripple signal detection and discrete noise detection.

[0153] The module interface of the SCU to be tested is connected to the virtual module to realize the connection of power supply, USB, network and other signals. The virtual module receives the instructions of the front-end software to realize load switching, power short circuit and other actions. The virtual module sends the power sampling signal to the DC voltage and current sampling unit to realize ripple and spurious analysis, and the results are uploaded to the front-end software. The virtual module sends the power signal to the electronic load for transient current capability detection.

[0154] As a preferred embodiment, Fig.12As shown, the terminal interchangeability detection connection circuit includes the load capacity detection connection circuit including the purification power supply connected to the SCU to be tested, the SCU to be tested is connected to the virtual module unit, and the virtual module unit is connected to the communication service unit; the front-end software is connected to the SCU to be tested, the virtual module unit and the communication service unit through the TCP / IP port and collects status data, and the front-end software detects the status data.

[0155] The CU interchangeability test is mainly based on 7.5.4.1 of the Q / GDW XXXX-2021 Intelligent Fusion Terminal Detection Specification to test whether the process, protocol, timing and other aspects of the functional module interface part of the SCU meet the technical specification requirements.

[0156] The purified power supply provides power input to the SCU to be tested. The virtual module implements the construction and data forwarding of the management channel and the data channel. The virtual module sets the module status through the front-end software. The communication service unit is responsible for the logical control of data packaging and distribution between the virtual module and the front-end software. The test software implements the detection of relevant protocols, processes, and timings such as management channels and data channels.

[0157] The module interface of the SCU to be tested is connected to the virtual module to realize the connection of power, USB, network and other signals. The virtual module receives the instructions of the front-end software to realize channel virtualization. The virtual channel data is sent to the communication service unit for processing and then sent to the front-end software. The test software sends a test message to the SCU to be tested and generates an interchangeability test action.

[0158] As a preferred embodiment, Fig.13 As shown, the module power consumption detection circuit connection diagram includes the purification power supply being connected to the virtual SCU, the virtual SCU being connected to the DC voltage and current sampling unit and the function module to be detected respectively, the DC voltage and current sampling unit being connected to the function module to be detected, and the function module to be detected being connected to the module adapter unit;

[0159] The virtual SCU, the DC voltage and current sampling unit and the module adapter unit are connected to the front-end software, and the front-end software is used to collect status data of the virtual SCU, the DC voltage and current sampling unit and the module adapter unit, and detect the status data.

[0160] The power consumption test of the SCU supporting modules is mainly based on 6.8 of Q / GDW XXXX-2021 Intelligent Fusion Terminal Test Specification to test whether the static and dynamic power consumption of the functional modules meet the technical specification requirements. The test logic is as follows: Fig.13 shown.

[0161] The virtual SCU unit supplies power to the functional module to be tested and realizes the connection between the functional module to be tested and the USB port and network port of the measurement and control system; the DC voltage and current sampling unit realizes the power consumption detection of the module to be tested and uploads the front-end software; the module adaptation unit provides auxiliary test signals such as communication response and matching load required by the functional module, and the adaptation network of the HPLC module is a 1uF capacitor connected in series with a 1Ω resistor; the test software controls the test process, reads the voltage / current / power data, and realizes the dynamic and static power consumption detection of the functional module.

[0162] The virtual SCU establishes power, USB, network and other signal connections with the functional module to be tested, realizes voltage and current sampling of the power supply, and sends the sampled data to the front-end software. The test software sends test messages to the functional module to be tested through the virtual SCU, initiates communication actions, and tests the dynamic and static power consumption of the module.

[0163] As a preferred embodiment, the front-end software is equipped with a software platform for controlling the execution of all test items, automatically processing and recording test data, and generating test reports.

[0164] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-protocol supported intelligent fusion terminal detection system for a substation, used to detect an intelligent fusion terminal and its functional modules in a substation, characterized by: include: Front-end processor software, the front-end processor software is connected to the standard source cabinet and the test tool cabinet through a communication service unit, and the standard source cabinet and the test tool cabinet are connected through a two-way communication line; The standard source cabinet includes a programmable power source, a three-phase standard meter, a standard clock source and a positioning system; the test tool cabinet includes a communication interface test unit, a whole machine power consumption test unit, a loop inspection test unit, a station test control unit and a station connection unit; and The front-end software deploys the standard source cabinet and the test tooling cabinet through the communication service unit to realize power adaptability detection, ground fault resistance detection, power consumption detection, AC analog quantity experiment detection, state quantity test detection, data acquisition and processing experiment detection, loop status inspection experiment detection and clock and positioning experiment detection of the SCU to be tested.

2. According to the multi-protocol supported intelligent fusion terminal detection system of claim 1, it is characterized by: The power adaptability detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be detected through a first wire, and the program-controlled three-phase power source and the SCU to be detected being connected to the front-end software through a communication line, the front-end software collecting state data of the program-controlled three-phase power source and the SCU to be detected through the communication line, and the front-end software performing detection and analysis on the collected test data; The anti-ground fault capability detection circuit diagram includes the program-controlled three-phase power source being connected to the station test control unit via a second wire, the station test control unit outputting a voltage increase of 1.9 and transmitting it to the SCU to be detected, and the program-controlled three-phase power source, the station test control unit and the SCU to be detected being connected to the front-end software communication line, the front-end software collecting the status data of the program-controlled three-phase power source, the station test control unit and the SCU to be detected via the communication line, and performing detection and analysis on the collected status data; The power consumption detection connection circuit diagram includes the programmable three-phase power source being connected to the whole machine power consumption test unit via a second wire, the whole machine power consumption test unit being connected to the SCU to be tested, and the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested being connected to the front-end software communication line, the front-end software collecting status data of the programmable three-phase power source, the whole machine power consumption test unit and the SCU to be tested via the communication line, and performing detection and analysis on the collected status data.

3. According to the multi-protocol supported intelligent fusion terminal detection system of claim 1, it is characterized by: The AC analog quantity experimental detection circuit diagram includes the program-controlled three-phase power source being connected to the three-phase standard meter through a first conductor, the three-phase standard meter being connected to the SCU to be detected, and the program-controlled three-phase power source, the three-phase standard meter and the SCU to be detected being connected to the front-end software communication line, the front-end software collecting the state data of the program-controlled three-phase power source, the three-phase standard meter and the SCU to be detected through the communication line, and performing detection and analysis on the collected state data; The state quantity test detection circuit diagram includes the program-controlled three-phase power source being connected to the SCU to be tested through a second wire, the SCU to be tested being connected to the station test control unit, the station test control unit being used to adjust the state of the SCU to be tested, the program-controlled three-phase power source and the station test control unit being connected to the front-end software through a communication line, the front-end software being used to collect state data of the program-controlled three-phase power source and the station test control unit, and to perform detection and analysis on the collected state data; The data acquisition and processing experimental detection circuit diagram includes the programmable three-phase power source being connected to the SCU to be tested via a first wire, the SCU to be tested being connected to the virtual electric meter via an RS485 communication interface, the programmable three-phase power source and the SCU to be tested being connected to the front-end software via a communication line, and the front-end software being used to collect status data of the programmable three-phase power source and the SCU to be tested, and to perform detection and analysis on the collected status data.

4. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 3 is characterized in that: The circuit diagram of the loop status inspection experiment includes that the program-controlled three-phase power source is connected to the SCU to be inspected through a first wire, and is connected to the loop inspection test unit through a third wire, the loop inspection test unit is connected to the SCU to be inspected through the third wire, and the program-controlled three-phase power source and the loop inspection test unit are connected to the front-end software through a communication line, and the front-end software is used to collect the status data of the program-controlled three-phase power source and the loop inspection test unit, and detect and analyze the collected status data; The clock and positioning test detection circuit diagram includes the programmable three-phase power source connected to the SCU to be tested through a second wire, the SCU to be tested is connected to the workstation control test unit; and the standard clock and positioning system is connected to the workstation control test unit; the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit are connected to the front-end software through a communication line, and the front-end software is used to collect status data of the programmable three-phase power source, the standard clock and positioning system and the workstation control test unit, and perform detection and analysis on the collected status data.

5. A multi-protocol supported intelligent fusion terminal detection system for a substation according to claims 2-4, characterized in that: The first conductor is used to transmit voltage and current, the second conductor is used to transmit voltage, and the third conductor is used to transmit current.

6. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 1, characterized in that: It also includes a measurement and control equipment cabinet and a measurement and control tool box, wherein the measurement and control equipment and the measurement and control tool box are both connected to the front-end software for communication; The measurement and control equipment cabinet includes: a purification power supply, a detection device, and a human-computer interaction device; the measurement and control tool box includes: a terminal station control, a virtual module unit, a communication service unit, a virtual terminal unit, and a module adapter unit; the terminal station control, the virtual module unit, and the communication service unit are connected to the SCU to be tested, and the virtual terminal unit and the module adapter unit are connected to the module to be tested; The front-end software realizes the load capacity detection, terminal interchangeability detection and module power consumption detection of the SCU to be inspected, the virtual SCU and the module to be inspected by deploying the measurement and control equipment cabinet and the measurement and control tool box.

7. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 6, characterized in that: The load capacity detection connection circuit includes the connection between the purification power supply and the SCU to be detected, the SCU to be detected is connected to the virtual module unit, the virtual module unit is connected to the DC voltage and current sampling unit and the electronic load; the SCU to be detected, the virtual module, the electronic load, the DC voltage and current sampling unit are connected to the front-end software, and the front-end software is used to collect status data of the SCU to be detected, the virtual module unit, the electronic load, and the DC voltage and current sampling unit, and detect the status data.

8. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 6, characterized in that: The terminal interchangeability detection connection circuit includes the load capacity detection connection circuit including the purification power supply connected to the SCU to be tested, the SCU to be tested is connected to the virtual module unit, and the virtual module unit is connected to the communication service unit; the front-end software is connected to the SCU to be tested, the virtual module unit and the communication service unit through the TCP / IP port and collects status data, and the front-end software detects the status data.

9. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 6, characterized in that: The module power consumption detection circuit connection diagram includes the purification power supply being connected to the virtual SCU, the virtual SCU being connected to the DC voltage and current sampling unit and the function module to be detected respectively, the DC voltage and current sampling unit being connected to the function module to be detected, and the function module to be detected being connected to the module adapter unit; The virtual SCU, the DC voltage and current sampling unit and the module adapter unit are connected to the front-end software, and the front-end software is used to collect status data of the virtual SCU, the DC voltage and current sampling unit and the module adapter unit, and detect the status data.

10. The multi-protocol supported intelligent fusion terminal detection system for substations according to claim 1, characterized in that: The front-end software is equipped with a software platform for controlling the execution of all test items, automatically processing and recording test data, and generating test reports.

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