CN117406157A - Detection method and system of broadband measurement system - Google Patents
Detection method and system of broadband measurement system Download PDFInfo
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- CN117406157A CN117406157A CN202311714611.8A CN202311714611A CN117406157A CN 117406157 A CN117406157 A CN 117406157A CN 202311714611 A CN202311714611 A CN 202311714611A CN 117406157 A CN117406157 A CN 117406157A
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Abstract
The invention discloses a detection method and a detection system of a broadband measurement system, relates to the technical field of power detection, and mainly aims to solve the problem of low detection efficiency of the broadband measurement system. The method mainly comprises the steps of obtaining detection parameters for detecting a broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result. The method is mainly used for detecting the broadband measurement system.
Description
Technical Field
The present invention relates to the field of power detection technologies, and in particular, to a detection method and system for a broadband measurement system.
Background
The broadband measuring device is novel measuring equipment for monitoring and controlling the broadband of the power grid. The method has the real-time measurement capability of fundamental waves and inter-harmonics/harmonics of a power grid through a high-frequency sampling technology of more than 12.8kHz and a broadband synchronous phasor measurement algorithm, and realizes the monitoring function of various broadband oscillation signals. Provides technical support for safe, stable and reliable operation of the novel power system. However, the existing wideband measurement equipment manufacturers are numerous, the quality is good and uneven, and the accuracy and reliability of the wideband monitoring of the power grid cannot be ensured.
The existing method for detecting the broadband measurement equipment mainly relies on manpower, and utilizes the universal detection equipment to confirm each function and performance of each equipment in the broadband measurement system one by one.
Disclosure of Invention
In view of the above, the present invention provides a detection method and system for a broadband measurement system, which mainly aims to solve the problem of low detection efficiency of the broadband measurement system.
According to one aspect of the present invention, there is provided a detection method of a broadband measurement system, including:
acquiring detection parameters for detecting a broadband measurement system;
transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation;
and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result.
Further, the detecting includes detecting by a master station and detecting by a slave station, and the obtaining the detection parameters for detecting the broadband measurement system includes:
under the condition of the detection of the master station, acquiring target joint detection parameters of a measurement substation where the target joint detection parameters are located from a multi-substation joint detection parameter set issued by a remote detection control center, wherein the multi-substation joint detection parameter set comprises substation detection parameters and substation signal delay parameters corresponding to different measurement substations;
in case of detection of the substation, an independent detection parameter matching with the measurement device information of the measurement substation is acquired.
Further, the broadband detection device transmits a detection electric signal satisfying the detection parameter to at least one broadband measurement device of the measurement substation, including:
under the condition of detection of the master station, the broadband detection equipment generates a first detection electric signal according to a substation detection parameter in the target joint detection parameters, and sends the first detection electric signal to the broadband measurement equipment according to the substation signal delay parameter;
and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
Further, the broadband detection device generates a second detection electric signal according to the independent detection parameter, including:
generating a clock synchronous digital signal according to the Beidou clock parameter and the independent detection parameter;
generating an alternating current analog initial signal according to the clock synchronous digital signal;
and sequentially performing power amplification and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal, wherein the second detection electric signal comprises a broadband alternating current signal and a broadband alternating voltage signal, and the broadband alternating current signal and the broadband alternating voltage signal are synchronous output signals.
Further, the determining the target detection result according to the obtained measurement result of the broadband measurement system includes:
acquiring a substation measurement result of the broadband measurement device from broadband data processing equipment of the measurement substation;
determining a substation detection result according to the comparison result of the substation measurement result and the detection electric signal, wherein the substation detection result comprises a substation basic function detection result and a substation basic performance detection result; and/or the number of the groups of groups,
and sending the substation measurement result to a remote detection control center, so that the remote detection control center determines a main station detection result according to the substation measurement result of the global measurement substation.
Further, the remote detection control center determines a master station detection result according to the substation measurement result of the global measurement substation, including:
the remote detection control center acquires a main station monitoring result of monitoring the power grid by a measurement main station side;
and determining a main station detection result of the broadband measurement system based on the main station monitoring result and the substation measurement result of the global measurement substation, wherein the main station detection result at least comprises one of detection results of a dynamic monitoring function, a dynamic data acquisition function, an online disturbance recognition function and an analysis function on the power grid operation of the main station.
According to another aspect of the present invention, there is provided a detection system of a broadband measurement system, comprising:
the broadband detection control device is in communication connection with the broadband detection device positioned in the same measurement substation;
the broadband detection control equipment is used for acquiring detection parameters for detecting the broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result.
The broadband detection device is used for sending detection electric signals meeting the detection parameters to at least one broadband measurement device in the measurement substation.
Further, the system also comprises a remote detection control center which is in communication connection with the broadband detection control device;
the broadband detection control device is specifically configured to obtain, under the condition of detection by the master station, a target joint detection parameter of a measurement sub-station where the target joint detection parameter is located from a multi-sub-station joint detection parameter set issued by a remote detection control center, where the multi-sub-station joint detection parameter set includes sub-station detection parameters and sub-station signal delay parameters corresponding to different measurement sub-stations; under the condition of detecting the substation, acquiring independent detection parameters matched with the measurement equipment information of the measurement substation;
the remote detection control center is used for sending the multi-substation joint detection parameter set to the broadband detection control equipment.
Further, the broadband detection device is specifically configured to generate, when the master station detects, a first detection electrical signal according to a substation detection parameter in the target joint detection parameters, and send the first detection electrical signal to the broadband measurement device according to the substation signal delay parameter; and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
Further, the broadband detection device is specifically configured to generate a clock synchronous digital signal according to the beidou clock parameter and the independent detection parameter; generating an alternating current analog initial signal according to the clock synchronous digital signal; and sequentially performing power amplification and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal, wherein the second detection electric signal comprises a broadband alternating current signal and a broadband alternating voltage signal, and the broadband alternating current signal and the broadband alternating voltage signal are synchronous output signals.
Further, the broadband detection control device is further configured to obtain a substation measurement result of the broadband measurement device from a broadband data processing device of the measurement substation;
determining a substation detection result according to the comparison result of the substation measurement result and the detection electric signal, wherein the substation detection result comprises a substation basic function detection result and a substation basic performance detection result; and/or the number of the groups of groups,
and sending the substation measurement result to a remote detection control center, so that the remote detection control center determines a main station detection result according to the substation measurement result of the global measurement substation.
Further, the remote detection control center is also used for acquiring a main station monitoring result of monitoring the power grid by the main measurement station side; and determining a main station detection result of the broadband measurement system based on the main station monitoring result and the substation measurement result of the global measurement substation, wherein the main station detection result at least comprises one of detection results of a dynamic monitoring function, a dynamic data acquisition function, an online disturbance recognition function and an analysis function on the power grid operation of the main station.
By means of the technical scheme, the technical scheme provided by the embodiment of the invention has at least the following advantages:
the embodiment of the invention provides a detection method and a detection system of a broadband measurement system, wherein the detection parameters for detecting the broadband measurement system are obtained; transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a master station detection result, so that the detection time of the broadband measurement system is greatly shortened, the detection complexity is reduced, and meanwhile, the comprehensive detection of the substation and the master station in the broadband measurement system is realized, thereby greatly improving the detection efficiency of the broadband measurement system.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a flowchart of a detection method of a broadband measurement system according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a connection relationship between substation detection devices according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a detection method of another broadband measurement system according to an embodiment of the present invention;
fig. 4 is a schematic diagram showing a composition structure of a broadband detection control device according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a composition structure of a broadband detection apparatus according to an embodiment of the present invention;
fig. 6 shows a schematic diagram of a connection relationship between a master station detection device according to an embodiment of the present invention;
fig. 7 shows a block diagram of a detection system of a broadband measurement system according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The method aims at solving the problems that the detection integrity and accuracy of a broadband measurement system are low, the detection time is long, and the existing detection efficiency requirement for field detection of broadband measurement equipment cannot be met. The embodiment of the invention provides a detection method of a broadband measurement system, as shown in fig. 1, comprising the following steps:
101. and obtaining detection parameters for detecting the broadband measurement system.
In the embodiment of the invention, the broadband measurement system comprises a measurement master station and a measurement substation. The measurement substations are typically arranged at substations or power stations, i.e. one measurement substation for each power station. The measurement substation comprises at least one broadband measurement device and broadband data processing equipment, wherein the installation positions of the broadband measurement device and the broadband data processing equipment are not in the same screen cabinet, for example, a transformer substation with the voltage of more than 500kV or a large-scale power plant, and the broadband measurement device and the broadband data processing equipment are installed in different compartments. The broadband data processing equipment is used for receiving the broadband data measured by each broadband measuring equipment and processing the broadband data to obtain substation measuring results. The measurement master station does not comprise actual broadband measurement equipment and broadband data processing equipment, and is used for collecting broadband measurement results of all measurement substations, and summarizing and analyzing the measurement results of the global measurement substations so as to realize global monitoring of the power grid.
The detection types of the broadband measurement system comprise substation detection and main station detection. The current execution main body is broadband detection control equipment, is provided with a wireless communication module, a Bluetooth communication module and a wired communication module, can realize data communication with the broadband detection equipment in the same measurement substation based on any one of the modules, and realizes data communication with a master station control center based on the wireless communication module. The acquired detection parameters are used for characterizing the electric signals required to be output by the broadband detection equipment to the broadband measurement equipment. The connection between the broadband detection equipment and the broadband detection control equipment is established according to the field detection condition, and if the two equipment are far apart, the wireless connection of the two equipment is established by setting up a small WIFI base station; if the two devices are closely spaced, they may be directly connected by a network cable.
102. And transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation.
In the embodiment of the present invention, as shown in fig. 2, a device connection relationship diagram for detecting any one broadband measurement substation is shown. The input end of the broadband detection equipment is connected with the output end of the broadband detection control equipment, the output end of the broadband detection equipment is connected with the measurement end of each broadband measurement equipment in the measurement substation, and the output end of the broadband data processing equipment is connected with the measurement result acquisition interface of the broadband detection control equipment. Each broadband measurement device sends the measured broadband data to the broadband data processing device, and the substation measurement result processed by the broadband data processing device is sent back to the broadband detection control device. The broadband detection equipment is used as a broadband alternating current signal source, and outputs detection electric signals meeting the detection parameter requirements to all broadband measurement equipment in the broadband measurement system so as to simulate the characteristics of the detected signals in the power grid line, thereby simulating the process of the broadband measurement equipment for measuring the electric signals in the power grid.
103. And determining a target detection result according to the acquired measurement result of the broadband measurement system.
In the embodiment of the invention, the target detection result at least comprises one of a substation detection result and a main station detection result. The measurement results of the broadband measurement system comprise substation measurement results and/or main station monitoring results, namely when the substation is detected, the substation detection results can be determined only based on the characteristics of the substation measurement results and the electric signals sent by the broadband detection equipment; when the master station detects, comprehensive analysis is needed based on the substation measurement results and the master station monitoring results so as to determine the master station detection results. The primary station detection and the secondary station detection may be performed separately, or the detection results of the corresponding secondary stations may be determined based on the measurement results of the respective secondary stations when the primary station is detected.
It should be noted that, by outputting the detection electric signal meeting the detection parameters to the broadband measurement device of the measurement substation, and determining the detection result of the broadband measurement system according to the measurement result of the broadband measurement device in each measurement substation, the automatic detection of the broadband measurement system is realized, the dependence of the detection process on manpower is greatly reduced, the measurement time is greatly reduced, and meanwhile, the detection accuracy and the comprehensiveness are ensured, so that the detection efficiency of the broadband measurement system is effectively improved.
For further explanation and limitation, in one embodiment of the present invention, as shown in fig. 3, step 101 of obtaining detection parameters for detecting a broadband measurement system includes:
201. under the condition of the detection of the master station, acquiring target joint detection parameters of the measurement sub-station from a multi-sub-station joint detection parameter set issued by a remote detection control center.
202. In case of detection of the substation, an independent detection parameter matching with the measurement device information of the measurement substation is acquired.
In the embodiment of the invention, a part of the measurement results of the measurement master station are obtained by comprehensive analysis based on the results of all the measurement substations, so that under the condition of master station detection, the broadband detection equipment of all the measurement substations under the measurement master station is required to be uniformly and cooperatively controlled, so that the measurement results of all the measurement substations meet the overall electric signal distribution characteristics of a power grid, and the comprehensive analysis capability of the measurement master station is detected. The broadband detection control equipment of each measurement sub-station acquires target joint detection parameters matched with the measurement sub-station in a multi-sub-station joint detection parameter set from a remote detection control center. The matching process may be performed based on the number of the measurement substation, the station name, and other attribute information, which is not specifically limited in the embodiment of the present invention. The multi-substation joint detection parameters include substation detection parameters corresponding to different measurement substations and substation signal delay parameters.
The substation signal delay parameter is determined by performing oscillation simulation processing according to the detection item information and the layout information of the global measurement substation. Because different measurement substations are distributed at different positions of the power grid, the same characteristic electrical signals have certain time delay in the occurrence time of each measurement substation, and the time for outputting the electrical signals by the wide-frequency detection equipment in the different measurement substations is different, namely the detection parameters of each measurement substation are different, so that the requirement of the measurement master station on analysis of the measurement results of the measurement substations can be met. Therefore, before the detection, an oscillation simulation test is required to be performed according to layout information of the global measurement sub-stations (for measuring transmission distance or time of a power grid between the sub-stations, etc.), so as to determine signal delay of each measurement sub-station, namely, sub-station signal delay parameters. The substation signal delay parameters of each measurement substation are based on the Beidou clock, so that each broadband detection device cooperatively outputs an electric signal, the accuracy and reliability of a signal source are ensured, and the accurate detection of the analysis function of the master station is realized.
In the case of substation detection, the independent detection parameters of each measurement substation may be issued by the remote detection control center, or may be configured by the user based on the detection conditions and detection requirements of the current measurement substation. As shown in fig. 4, the broadband detection control device includes an external input interface and a display output interface in addition to a WIFI wireless communication module, a bluetooth communication module, a wired communication module, and a measurement result acquisition interface, and may be used to receive a test parameter input by a user through the input device, and also may display all detection items, so that the user configures the detection parameter for the measurement substation through a visual selection manner. The independent detection parameters of each measurement substation can be the same or different, and can be customized according to specific application scenes, and the embodiment of the invention is not particularly limited.
In one embodiment of the present invention, for further explanation and limitation, the broadband detection apparatus transmits a detection electrical signal satisfying the detection parameter to at least one broadband measurement apparatus of the measurement substation, including:
under the condition of detection of the master station, the broadband detection equipment generates a first detection electric signal according to a substation detection parameter in the target joint detection parameters, and sends the first detection electric signal to the broadband measurement equipment according to the substation signal delay parameter;
and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
In the embodiment of the invention, under the condition of detection of the master station, the broadband measurement equipment of each measurement substation can output electric signals to the broadband measurement equipment in the substation according to different signal delays based on the target joint detection parameters issued by the remote broadband control equipment, so that cooperative control of the broadband detection equipment among the substations is realized, and the overall data analysis requirement of the master station detection on each measurement substation in a power grid is met.
It should be noted that the broadband detection device is constructed based on a clock synchronous broadband signal source, a broadband current and voltage amplifying device and an analog and digital two-stage feedback mechanism, and can realize the clock synchronous output function of broadband analog signals. The detection electric signal which can be generated by the broadband detection equipment at least comprises one of a three-phase alternating current signal, a voltage signal, an analog low-frequency oscillation signal, a subsynchronous oscillation signal, a supersynchronous oscillation signal and a broadband oscillation signal which are synchronous with the second pulse of the positioning system, and the detection electric signal can fully cover the possible abnormal signal condition in the power grid, so that the omnibearing detection requirement of the broadband measurement equipment is met.
In an embodiment of the present invention, for further explanation and limitation, the broadband detection apparatus generates a second detection electrical signal according to the independent detection parameter, including:
generating a clock synchronous digital signal according to the Beidou clock parameter and the independent detection parameter;
generating an alternating current analog initial signal according to the clock synchronous digital signal;
and sequentially performing power amplification processing and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal.
In the embodiment of the invention, the second detection electric signal includes a broadband ac current signal and a broadband ac voltage signal, and the broadband ac current signal and the broadband ac voltage signal are synchronous output signals. The broadband detection equipment is used as a signal source for providing detection signals, can output broadband alternating current signals in the range of 0-4 KHz, 0-100V and 0-5A of output current according to the requirements of detection parameters, so as to provide accurate electric signals for the detection of a broadband measurement system, and solve the problem of the lack of the broadband alternating current signal source in the prior art. Fig. 5 is a schematic diagram of a broadband detection device, which includes a master control system, a beidou clock synchronization module, a clock synchronization broadband signal source generation module, a voltage feedback loop, a broadband voltage high-speed power amplification module, a voltage output loop, a clock synchronization voltage acquisition module, a current feedback loop, a broadband current high-speed power amplification module, a current output loop, and a clock synchronization current acquisition module. The main control system is mainly used for the functions of instruction setting, function control, output digital feedback control, external input and output control and communication control of the equipment. The clock synchronous broadband signal source generation module is mainly used for generating clock synchronous digital signals and converting and outputting alternating current analog small signals (alternating current analog initial signals) in various frequency ranges. The broadband voltage high-speed power amplification module is mainly used for realizing the rapid power amplification of alternating-current analog small signals and amplifying the small voltage to an alternating-current voltage signal in the range of 0-100V; the broadband current high-speed power amplification module is mainly used for realizing the rapid power amplification of alternating-current analog small signals and amplifying the small current to an alternating-current voltage signal in the range of 0-5A. In order to ensure accuracy and stability of outputting large current and large voltage, feedback processing is required for signals. The voltage feedback loop and the current feedback loop are mainly used as the primary feedback of the broadband current and voltage high-speed power amplification module, so that the problems of accuracy and stability of output current and voltage are solved, and the output current and voltage are ensured to meet the measurement requirements of a broadband measurement system. The clock synchronous voltage and current acquisition module is used for sampling, the problem of synchronous accuracy of broadband current and voltage is mainly solved, the rapid and accurate feedback measurement of the current and the voltage is realized through the high-precision sampling resistor and the A/D sampling module, and the result is fed back to the main control system to regulate the amplitude value and the synchronous phase of the output voltage and the current. The current and voltage output loop is mainly used for increasing the safety protection output function and ensuring the safety of the main circuit of the equipment under the scenes of current open circuit, voltage short circuit and the like. The clock synchronous broadband signal source generates current and voltage digital signals with specified frequency according to a main control system instruction (generated based on detection parameters), the current and voltage digital signals are converted into analog voltage and current small signals through D/A (digital-to-analog) conversion, the analog voltage and current small signals are amplified by the broadband current and voltage high-speed power amplification module, and then sampling, analog and digital secondary feedback are carried out through the clock synchronous voltage and current acquisition module, so that synchronous output of broadband alternating current signals and broadband alternating voltage signals is realized.
It should be noted that, the generating process of the first detection electric signal by the broadband detection device according to the substation detection parameter in the target joint detection parameter is the same as the generating process of the second detection electric signal, which is not described herein.
In an embodiment of the present invention, for further explanation and limitation, determining a target detection result according to the obtained measurement result of the broadband measurement system includes:
acquiring a substation measurement result of the broadband measurement device from broadband data processing equipment of the measurement substation;
determining a substation detection result according to the comparison result of the substation measurement result and the detection electric signal, wherein the substation detection result comprises a substation basic function detection result and a substation basic performance detection result; and/or the number of the groups of groups,
and sending the substation measurement result to a remote detection control center, so that the remote detection control center determines a main station detection result according to the substation measurement result of the global measurement substation.
In the embodiment of the invention, the measurement substation or the measurement master station can be independently detected according to different detection requirements, and the substation detection can be carried out at the same time of the master station detection, so that the substation measurement result obtained by the broadband detection control equipment can be used for judging the substation detection result and can also be used for judging the master station detection result, namely, the substation measurement result is required to be obtained in both the substation detection and the master station detection. Before the substation measurement result is obtained, current and voltage input of the broadband measurement device is required to be disconnected, and current and voltage output of the broadband detection device is connected to current and voltage input ends (voltage parallel connection and current series connection) of the broadband measurement device, so that the broadband measurement device takes the broadband detection device as a signal source. Communication connection between the broadband detection equipment and the broadband detection control equipment and between the broadband detection control equipment and the broadband data processing equipment are established, and the broadband detection control equipment is additionally arranged as a simulation master station of the broadband data processing equipment, so that the broadband detection control equipment can receive the substation measurement result while the broadband data processing equipment sends the substation measurement result to the measurement master station, and the detection result of the current substation is determined based on the comparison result of the substation measurement result and the detection electric signal (determined according to the detection parameter). For example, whether the broadband measurement device has a function of testing the inter-harmonic signal is determined according to whether the inter-harmonic signal in the detection electric signal is included in the measurement result of the substation, or the performance of the broadband measurement device is judged by calculating a relative error based on the measurement result of the substation and the detection electric signal. The substation detection results comprise substation basic function detection results and substation basic performance detection results. Specifically, the substation basic function detection includes harmonic wave and inter-harmonic wave function detection, data recording function detection, wave recording function detection, communication function detection and the like. The substation basic performance detection comprises measurement accuracy detection, dynamic and static performance detection, low-frequency oscillation monitoring performance detection, subsynchronous oscillation monitoring performance detection, 100-300Hz broadband oscillation monitoring performance detection, time synchronization performance detection, dynamic and static performance detection and the like.
In one embodiment of the present invention, for further explanation and limitation, the remote detection control center determines a master station detection result according to the substation measurement result of the global measurement substation, including:
the remote detection control center acquires a main station monitoring result of monitoring the power grid by a measurement main station side;
and determining a master station detection result of the broadband measurement system based on the master station monitoring result and the substation measurement result of the global measurement substation.
In the embodiment of the invention, in the detection process of the master station, as shown in fig. 6, wireless connection between the broadband detection control device and the remote detection control center in each measurement substation is established, so as to ensure that the broadband detection control device can receive a control instruction (carrying detection parameters) of the remote detection control center. After the fact that the detection of the function of the measuring main station can be started is confirmed, each broadband detection device generates detection electric signals according to corresponding substation detection parameters, and the detection electric signals are sent to the broadband measurement device according to signal delay parameters so as to simulate the transmission state of signals in a power grid. The broadband data processing equipment of each measurement substation feeds back the substation measurement results to the master station side for analysis by the master station side to obtain the master station measurement monitoring results. For example, comparing the dynamic data acquisition data in the measurement monitoring result of the master station with the measurement result of the substation to detect the dynamic data acquisition function of the master station side; or comparing the power grid operation dynamic monitoring result, analysis result, on-line disturbance recognition result and the like with substation detection signals of all the measurement substations so as to detect whether corresponding functions of the main station side are effective or not, and the like. The monitoring results of the main station comprise power grid operation dynamic monitoring results, dynamic data acquisition function monitoring results, analysis results obtained by analysis based on substation measurement results and the like.
The detection results of the master station comprise detection results of a power grid operation dynamic monitoring function, a dynamic data acquisition function, an online disturbance recognition function and an analysis function of the master station. The broadband main station power grid operation dynamic monitoring function and the dynamic data acquisition function are realized by controlling each broadband detection device to output clock synchronous steady-state three-phase current and three-phase voltage signals. The line disturbance recognition result is realized by controlling each broadband detection device to simulate the power grid disturbance conditions such as line short circuit, open circuit and the like. The detection of the analysis function is realized by controlling each broadband detection device to output low-frequency oscillation, subsynchronous oscillation and supersynchronous oscillation and broadband oscillation signals.
The embodiment of the invention provides a detection method of a broadband measurement system, which comprises the steps of obtaining detection parameters for detecting the broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a master station detection result, so that the detection time of the broadband measurement system is greatly shortened, the detection complexity is reduced, and meanwhile, the comprehensive detection of the substation and the master station in the broadband measurement system is realized, thereby greatly improving the detection efficiency of the broadband measurement system.
Further, as an implementation of the method shown in fig. 1, an embodiment of the present invention provides a detection system of a broadband measurement system, as shown in fig. 7, where the system includes:
the broadband detection control device 31 and the broadband detection device 32, wherein the broadband detection control device 31 is in communication connection with the broadband detection device 32 positioned at the same measurement sub-station;
the broadband detection control equipment is used for acquiring detection parameters for detecting the broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result.
The broadband detection device is used for sending detection electric signals meeting the detection parameters to at least one broadband measurement device in the measurement substation.
Further, the system also comprises a remote detection control center which is in communication connection with the broadband detection control device;
the broadband detection control device is specifically configured to obtain, under the condition of detection by the master station, a target joint detection parameter of a measurement sub-station where the target joint detection parameter is located from a multi-sub-station joint detection parameter set issued by a remote detection control center, where the multi-sub-station joint detection parameter set includes sub-station detection parameters and sub-station signal delay parameters corresponding to different measurement sub-stations; under the condition of detecting the substation, acquiring independent detection parameters matched with the measurement equipment information of the measurement substation;
the remote detection control center is used for sending the multi-substation joint detection parameter set to the broadband detection control equipment.
Further, the broadband detection device is specifically configured to generate, when the master station detects, a first detection electrical signal according to a substation detection parameter in the target joint detection parameters, and send the first detection electrical signal to the broadband measurement device according to the substation signal delay parameter; and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
Further, the broadband detection device is specifically configured to generate a clock synchronous digital signal according to the beidou clock parameter and the independent detection parameter; generating an alternating current analog initial signal according to the clock synchronous digital signal; and sequentially performing power amplification and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal, wherein the second detection electric signal comprises a broadband alternating current signal and a broadband alternating voltage signal, and the broadband alternating current signal and the broadband alternating voltage signal are synchronous output signals.
Further, the broadband detection control device is further configured to obtain a substation measurement result of the broadband measurement device from a broadband data processing device of the measurement substation;
determining a substation detection result according to the comparison result of the substation measurement result and the detection electric signal, wherein the substation detection result comprises a substation basic function detection result and a substation basic performance detection result; and/or the number of the groups of groups,
and sending the substation measurement result to a remote detection control center, so that the remote detection control center determines a main station detection result according to the substation measurement result of the global measurement substation.
Further, the remote detection control center is also used for acquiring a main station monitoring result of monitoring the power grid by the main measurement station side; and determining a main station detection result of the broadband measurement system based on the main station monitoring result and the substation measurement result of the global measurement substation, wherein the main station detection result at least comprises one of detection results of a dynamic monitoring function, a dynamic data acquisition function, an online disturbance recognition function and an analysis function on the power grid operation of the main station.
The embodiment of the invention provides a detection system of a broadband measurement system, which is implemented by acquiring detection parameters for detecting the broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation; and determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a master station detection result, so that the detection time of the broadband measurement system is greatly shortened, the detection complexity is reduced, and meanwhile, the comprehensive detection of the substation and the master station in the broadband measurement system is realized, thereby greatly improving the detection efficiency of the broadband measurement system.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for detecting a broadband measurement system, comprising:
acquiring detection parameters for detecting a broadband measurement system;
transmitting the detection parameters to broadband detection equipment of the measurement substation, so that the broadband detection equipment transmits detection electric signals meeting the detection parameters to at least one broadband measurement equipment of the measurement substation;
determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result;
the detection comprises main station detection and sub-station detection, the acquisition of detection parameters for detecting the broadband measurement system comprises the following steps:
under the condition of the detection of the master station, acquiring target joint detection parameters of a measurement substation where the target joint detection parameters are located from a multi-substation joint detection parameter set issued by a remote detection control center, wherein the multi-substation joint detection parameter set comprises substation detection parameters and substation signal delay parameters corresponding to different measurement substations;
in case of detection of the substation, an independent detection parameter matching with the measurement device information of the measurement substation is acquired.
2. The method of claim 1, wherein the broadband detection device transmits detection electrical signals satisfying the detection parameters to at least one broadband measurement device of the measurement substation, comprising:
under the condition of detection of the master station, the broadband detection equipment generates a first detection electric signal according to a substation detection parameter in the target joint detection parameters, and sends the first detection electric signal to the broadband measurement equipment according to the substation signal delay parameter;
and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
3. The method of claim 2, wherein the second detection electrical signal comprises a broadband ac current signal, a broadband ac voltage signal, and wherein the broadband detection device generates the second detection electrical signal based on the independent detection parameters, comprising:
generating a clock synchronous digital signal according to the Beidou clock parameter and the independent detection parameter;
generating an alternating current analog initial signal according to the clock synchronous digital signal;
and sequentially performing power amplification processing and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal, wherein the broadband alternating current signal and the broadband alternating current voltage signal are synchronous output signals.
4. The method of claim 1, wherein determining the target detection result based on the obtained measurement result of the broadband measurement system comprises:
acquiring a substation measurement result of the broadband measurement device from broadband data processing equipment of the measurement substation;
determining a substation detection result according to the comparison result of the substation measurement result and the detection electric signal, wherein the substation detection result comprises a substation basic function detection result and a substation basic performance detection result; and/or the number of the groups of groups,
and sending the substation measurement result to a remote detection control center, so that the remote detection control center determines a main station detection result according to the substation measurement result of the global measurement substation.
5. The method of claim 4, wherein the master station detection results include at least one of detection results of a dynamic monitoring function, a dynamic data acquisition function, an online disturbance recognition function, and an analysis function for a grid operation of a master station, wherein the remote detection control center determining master station detection results based on the substation measurement results of a global measurement substation comprises:
the remote detection control center acquires a main station monitoring result of monitoring the power grid by a measurement main station side;
and determining a master station detection result of the broadband measurement system based on the master station monitoring result and the substation measurement result of the global measurement substation.
6. A detection system for a broadband measurement system, comprising: the broadband detection control device is in communication connection with the broadband detection device positioned in the same measurement substation;
the broadband detection control equipment is used for acquiring detection parameters for detecting the broadband measurement system; transmitting the detection parameters to broadband detection equipment of the measurement substation; determining a target detection result according to the acquired measurement result of the broadband measurement system, wherein the target detection result at least comprises one of a substation detection result and a main station detection result;
the broadband detection equipment is used for sending detection electric signals meeting the detection parameters to at least one broadband measurement equipment in the measurement substation;
the system also comprises a remote detection control center which is in communication connection with the broadband detection control equipment;
the broadband detection control device is specifically configured to obtain, under the condition of detection by the master station, a target joint detection parameter of a measurement sub-station where the target joint detection parameter is located from a multi-sub-station joint detection parameter set issued by a remote detection control center, where the multi-sub-station joint detection parameter set includes sub-station detection parameters and sub-station signal delay parameters corresponding to different measurement sub-stations; under the condition of detecting the substation, acquiring independent detection parameters matched with the measurement equipment information of the measurement substation;
the remote detection control center is used for sending the multi-substation joint detection parameter set to the broadband detection control equipment.
7. The system according to claim 6, wherein the broadband detection device is specifically configured to, in a case of detection by the master station, generate a first detection electrical signal according to a substation detection parameter of the target joint detection parameters, and send the first detection electrical signal to the broadband measurement device according to the substation signal delay parameter; and under the condition of substation detection, the broadband detection equipment generates a second detection electric signal according to the independent detection parameters and sends the second detection electric signal to the broadband measurement equipment.
8. The system of claim 7, wherein the broadband detection device is specifically configured to generate a clock synchronous digital signal according to the beidou clock parameter and the independent detection parameter; generating an alternating current analog initial signal according to the clock synchronous digital signal; and sequentially performing power amplification and signal feedback processing on the alternating current analog initial signal to obtain a second detection electric signal, wherein the second detection electric signal comprises a broadband alternating current signal and a broadband alternating voltage signal, and the broadband alternating current signal and the broadband alternating voltage signal are synchronous output signals.
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