CN110260970B - Wide-area synchronous measurement method for transformer substation boundary noise and noise monitoring equipment - Google Patents
Wide-area synchronous measurement method for transformer substation boundary noise and noise monitoring equipment Download PDFInfo
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- CN110260970B CN110260970B CN201910575420.5A CN201910575420A CN110260970B CN 110260970 B CN110260970 B CN 110260970B CN 201910575420 A CN201910575420 A CN 201910575420A CN 110260970 B CN110260970 B CN 110260970B
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Abstract
The invention discloses a transformer substation factory boundary noise wide-area synchronous measurement method and noise monitoring equipment. The equipment provided by the invention is wireless and passive, light in weight and convenient, can be widely applied to various noise monitoring environments, and can form a wide-area noise measurement system through combined deployment, so that the noise is automatically and continuously measured synchronously, the noise monitoring period is unattended, the data is automatically transmitted, no secondary input is performed, the reliability of noise measurement data is ensured, the problems of asynchrony and unreliable data of multi-point noise measurement in a transformer substation factory boundary can be effectively solved, and the environmental evaluation efficiency of the noise in the transformer substation factory boundary can be greatly improved. Meanwhile, the wide area synchronous measurement method can be further extended to other systems needing synchronous measurement, and more intelligent wide area synchronous measurement is realized.
Description
Technical Field
The invention relates to the field of noise detection, in particular to a wide-area synchronous measurement method and noise monitoring equipment for transformer substation boundary noise.
Background
The transformer substation belongs to the power transformation link of a power grid and plays an important role in a power system, noise generated during operation of various electrical equipment in the transformer substation inevitably influences workers in the substation, nearby residents and the environment, during a power consumption peak period, high load rate of the transformer substation generates great noise, and the problem of environmental influence on the noise of the transformer substation is paid more and more attention. In 2015, national power grids are organized every year to make scientific and technological, smart power grids and environmental protection working plans, and companies in various provinces are required to strengthen overall process environmental protection technical supervision, for example: and carrying out measures such as noise monitoring and data filling in the operation period of the transformer substation, making a treatment plan for the transformer substation with excessive noise and the like so as to accelerate the implementation of treatment work.
At present, the noise measurement of the transformer substation factory boundary still has a plurality of problems in the actual work: due to background noise interference, the noise measurement of the transformer substation boundary needs to synchronously measure multi-point noise, and the measurement mode not only increases the working intensity of measurement personnel, but also influences the reliability and accuracy of measurement data; the time consumption period of noise rotation measurement is long, the change of testers is frequent, the possibility of artificially editing data exists in noise measurement, and the noise level cannot be objectively reflected; moreover, noise needs to be measured day and night, so that the measurement time and difficulty are increased, and the measurement efficiency is low; and the deviation of the measuring point positions leads to that the noise evaluation history data cannot be longitudinally compared. On the other hand, although the existing noise test equipment is improved, the problems that data does not support on-line transmission, multipoint synchronous monitoring cannot be guaranteed, or standby time is insufficient still exist.
Disclosure of Invention
The invention aims to: in order to solve the problems of asynchronous noise measurement and unreliable noise data of the transformer substation factory boundary, the invention provides a noise wide-area synchronous measurement method and noise monitoring equipment.
The technical scheme adopted by the invention is as follows:
a wide area synchronous measurement method of transformer substation factory boundary noise is used in a wide area synchronous measurement system composed of a plurality of noise monitoring devices, and is divided into periodic and repeated noise measurement sub-steps by decoupling the measurement steps of the factory boundary noise according to measurement time periods, wherein the noise measurement sub-steps comprise a first measurement starting step, a measurement continuing step and a measurement ending step; in the wide-area synchronous measurement system, each noise monitoring device can automatically and synchronously execute each noise measurement sub-step according to the synchronous time.
Further, the synchronization time is the time for keeping the system synchronized, which is generated by an accumulative value with a minimum time unit and by using the accumulative value of the accumulative value; in addition, the synchronous time also periodically acquires wide-area time service information, and calibrates and updates the value of the accumulation counter according to the time value extracted from the time service information.
Further, the wide area synchronous measurement method comprises the following steps:
step 1: initializing the synchronization time expressed by a minimum time unit, firstly constructing a timer SysmsTimer and a synchronization time Synctime, and executing a self-increment 1 operation by the synchronization time Synctime after the timing time is up;
step 2: the method comprises the steps of periodically acquiring wide area time service time, and setting a synchronous period SycnPeriod; when the synchronization time Synctime value is an integral multiple of the SycnPeriod value of the synchronization period, reading wide-area time service information, and analyzing the wide-area time service information to obtain the wide-area time service time;
and step 3: calibrating and updating system synchronization time Synctime according to the acquired wide area time service in a synchronization period;
and 4, step 4: and decoupling the continuous noise measurement process into four substeps, and matching the corresponding substeps of noise measurement according to the synchronization time Synctime.
Furthermore, the step 2 of obtaining the wide area time service is to obtain the positioning time service information from the GPS module, and to analyze or extract the wide area GPS time service.
Further, the continuous measurement process of noise is decoupled into four noise measurement sub-steps: starting a measuring step, a measuring continuing step and a measuring task ending step for the first time, and matching according to the synchronization time Synctime, wherein the method specifically comprises the following steps:
step 4.1, a measuring substep is started for the first time, after the synchronization time Synctime finishes the first calibration, whether the synchronization time Synctime is the preset first starting measuring time SyncStartTime is detected, and if yes, the next step is continued;
step 4.2, detecting whether the synchronous time Synctime reaches the period measurement time, if so, starting the measurement substep and carrying out single-time noise continuous measurement according to the preset measurement Duration;
4.3, finishing single noise measurement after the preset measurement Duration is reached, and continuing the next step;
and 4.4, detecting whether the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, if not, repeating the step 4.2 after the current measurement Period is finished, starting new single noise measurement and continuously and periodically executing second noise measurement when the next measurement Period is started, … …, measuring noise for the nth time until the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, and executing the substep of finishing the measurement and exiting the continuous measurement process of the current noise.
Further, the detection of the synchronization time syncime value occurs in the whole measurement process, including during the Duration of measurement for performing a single noise measurement, and if the synchronization time syncime value is an integer multiple of the syncnperiod value of the synchronization period, the steps 2 and 3 are repeated to complete the calibration and updating of the synchronization time syncime.
On the other hand, the invention provides noise monitoring equipment which is used for continuously monitoring noise in a wide-area synchronous measurement system and comprises a noise monitoring host 1, a wireless data transmission antenna 2, a wide-area time service positioning antenna 3, a noise sensor 4, a sensor support rod 5, a first connecting piece 6, a second connecting piece 7, a host installation back plate 8 and a connecting cable 9; the wireless data transmission antenna 2 and the wide area time service positioning antenna 3 are fixedly arranged at the upper end of the noise monitoring host 1, and the noise monitoring host 1 is also provided with a charging and configuration multiplexing interface 10 and a power switch 11; the noise sensor 4 is connected with the top end of a sensor support rod 5, wherein the sensor support rod 5 is of a telescopic structure with adjustable rod length;
the noise monitoring host 1 is fixedly connected with a host installation back plate 8 through a first connecting piece 6; the connecting cable 10 passes through the sensor supporting rod 5 and is connected with the noise sensor 4 and the noise monitoring host 1; the sensor support rod 5 is also connected with the noise monitoring host 1 through a second connecting piece 7.
Further, the sensor support rod 5 is a multi-section conical tube made of insulating materials, and the support rod can be contracted and extended.
Further, the noise monitoring host 1 is fixed on the host mounting backboard 8 through the host hooking nut 13 by using the second connecting member 7, and the host mounting backboard 8 is fixedly mounted on the top side surface of the fixed object by using the backboard mounting nut 12, so that the noise continuous measuring device is fixed at the position for measuring noise.
Further, the noise monitoring host 1 comprises a sound level meter, a wide area positioning time service module, a wireless data transmission module, an embedded control system, an energy storage battery and a power supply control system; the sound level meter is used for receiving and statistically analyzing the noise signals collected by the noise sensor; the wide area positioning time service module is used for acquiring and analyzing wide area positioning and time service information; the wireless data transmission module is used for transmitting noise data and noise monitoring host state data; the embedded control system is used for coordinating and processing all modules in the noise monitoring host machine; the power supply control system is used for converting energy in the energy storage battery and providing the energy to each module in the noise monitoring host; the sound level meter, the wide area positioning time service module, the wireless data transmission module and the energy storage battery are all in communication connection with the embedded control system, and the energy storage battery is further electrically connected with the power supply control system.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the wide area synchronous measurement method capable of applying the transformer substation factory boundary noise and the corresponding noise monitoring equipment provided by the invention have the advantages that the noise measurement device is wireless and passive, light in weight and convenient and can be widely applied to various noise detection environments, the wide area noise measurement system can be formed by combined deployment, so that the noise is automatically and continuously measured synchronously, the noise monitoring period is unattended, the data is automatically transmitted, no secondary recording is performed, the reliability of noise measurement data is ensured, the problems of asynchronization of multi-point noise measurement and unreliable data of the transformer substation factory boundary can be effectively solved, and the environmental evaluation efficiency of the transformer substation factory boundary noise can be greatly improved. Meanwhile, the wide area synchronous measurement method can be further extended to other systems needing synchronous measurement, and more intelligent wide area synchronization is realized.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of decoupling measurement tasks of a noise monitoring device
FIG. 2 is a flowchart of a wide area synchronous measurement method
FIG. 3 is a front view of a noise monitoring device;
FIG. 4 is a side view of a noise monitoring device;
fig. 5 is a schematic diagram of a host module of the noise monitoring apparatus.
In the figure: 1. the noise monitoring system comprises a noise monitoring host 2, a wireless data transmission antenna 3, a wide area time service positioning antenna 4, a noise sensor 5, a sensor support rod 6, a first connecting piece 7, a second connecting piece 8, a host installation back plate 9, a connecting cable 10, a charging and configuration multiplexing interface 11, a power switch 12, a back plate installation nut 13 and a host hanging nut.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example one
The embodiment discloses a method for carrying out wide area synchronous measurement on transformer substation boundary noise, which is applied to a wide area synchronous measurement system consisting of a plurality of noise monitoring devices, and is divided into periodic and repetitive noise measurement sub-steps by decoupling measurement steps of the boundary noise according to measurement time periods, wherein the noise measurement sub-steps comprise a measurement step of starting for the first time, a measurement step, a measurement continuation step and a measurement ending step; in the wide area synchronous measurement system, each noise monitoring device can automatically and synchronously execute each noise measurement sub-step according to a synchronous time.
In one embodiment, the synchronization time is a time provided by the noise monitoring device or the wide area synchronization measurement system for keeping the system synchronized, which is generated by an accumulation value with a minimum time unit and by using the accumulation value of the accumulation value; in addition, the synchronous time also periodically acquires wide-area time service information, and calibrates and updates the value of the accumulation counter according to the time value extracted from the time service information.
As further shown in fig. 2 and 3, the wide area synchronous measurement method includes the following steps:
step 1: a synchronization time expressed in a minimum time unit is initialized. Firstly, a timer SysmsTimer and a synchronous time Synctime are constructed, and when the timing time reaches, the synchronous time Synctime executes a self-increment 1 operation;
the expression of the minimum time unit means that a uniform time unit is used as a minimum unit of time counting, and in one embodiment, the timer sysstmeter and the synchronization time Synctime both use millisecond time units as counting units.
Step 2: and acquiring the wide-area time service time regularly and periodically. Firstly, setting a synchronous period SycnPeriod; when the synchronizing time Synctime value is N times of the SycnPeriod value of the synchronizing period, N is an integer, wide-area time service information is read, and the wide-area time service information is analyzed from the wide-area time service information, namely the time minute second of the current moment: hour, Min, Sec;
in one embodiment, the obtaining of the wide area time service is performed by obtaining positioning time service information from a GPS module and analyzing or extracting the wide area GPS time service.
And step 3: and calibrating and updating the system synchronization time Synctime according to the acquired wide area time service in the synchronization period. Converting the wide-area time service time acquired in the step 2, namely the time minutes and seconds of the current time, into a time unit which is the same as the synchronization time Synctime, and using the time unit to calibrate and update the system synchronization time Synctime;
for example, when the synchronization time synctim value is 0 at initial start, that is, N is 0, and at this time, is equal to a value of an integral multiple of the synchronization period SycnPeriod, the system acquires the current wide-area time service, parses the wide-area time service from the current wide-area time service, and uses the wide-area time service for updating the synchronization time synctim value.
If the unit of the wide area time service time is not consistent with the unit of the system synchronization time Synctime, the two times need to be converted into a unified unit. For example, when the time unit of the synchronization time syncime is millisecond, the time minute of the current time is: hour, Min, Sec convert to a time value in milliseconds, and use the converted time value to update the system synchronization time Synctime.
And 4, step 4: and decoupling the complete continuous noise measurement process into four substeps, and matching the corresponding noise measurement substeps according to the synchronization time Synctime. Specifically, the method comprises the steps of converting the time sequence of the decoupled noise measurement sub-step, and matching the corresponding noise measurement sub-task process according to the synchronization time Synctime.
As shown in fig. 1, after the initialization and the calibration and update of the primary synchronization time syncime are completed, the complete continuous noise measurement process is decoupled into four noise measurement sub-steps: starting a measuring step, a measuring continuing step and a measuring task ending step for the first time, and matching according to the synchronization time Synctime.
Step 4.1, a measuring substep is started for the first time, after the synchronization time Synctime finishes the first calibration, whether the synchronization time Synctime is the preset first starting measuring time SyncStartTime is detected, and if yes, the next step is continued;
when the system is preset or initialized, a first starting measurement time SyncStartTime is preset, which indicates that the complete continuous noise measurement is started at the time. In one embodiment, it is therefore only necessary to detect whether the system synchronization time Synctime is greater than or equal to the time value of the first-time-to-start measurement time SyncStartTime, and start to start specific noise measurement when the system synchronization time Synctime is greater than or equal to the time value of the first-time-to-start measurement time SyncStartTime.
And 4.2, detecting whether the synchronous time Synctime reaches the period measurement time, if so, starting the measurement substep and carrying out single-time noise continuous measurement according to the preset measurement Duration.
4.3, finishing single noise measurement after the preset measurement Duration is reached, and continuing to detect the synchronization time Synctime in the next step;
and simultaneously, the system automatically repeats the step 2-the step 3, and the method comprises the steps of periodically detecting the synchronization time Synctime according to the wide-area time service, and judging and finishing the calibration and the updating of the synchronization time Synctime value according to the proportional relation between the synchronization time Synctime value and the SycnPeriod value of the synchronization period.
It should be noted that the detection of the synchronization time syncrime value occurs in the whole measurement process, even during the Duration of measurement for noise measurement, if the synchronization time syncrime value is N times of the syncnperiod value of the synchronization period, where N is an integer, then step 2 and step 3 need to be repeated to complete the calibration and update of the synchronization time syncrime.
And 4.4, detecting whether the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, if not, starting new single noise measurement and continuously and periodically executing second noise measurement after the current measurement Period is finished and when the next measurement Period is started, … …, measuring noise for the nth time until the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, and executing a substep for finishing the measurement and exiting the current continuous noise measurement process.
During the presetting or initialization of the system, a measurement task ending time SyncStopTime needs to be preset, which indicates that a complete noise continuous measurement process is stopped and ended at the time. In one embodiment, it is therefore only necessary to check whether the system synchronization time syncrime is greater than or equal to the time value of the moment SyncStopTime at which the measurement task is ended, and to stop the complete continuous measurement of the noise if the system synchronization time syncrime is greater than or equal to the time value of the moment SyncStopTime at which the measurement task is ended.
Further, the time point setting of each task time in the wide area synchronous measurement method is explained by means of pseudo codes:
inputting Input:
{[sStartTime_d,sStartTime_h,sStartTime_m,sStartTime_s]
[sStopTime_d,sStopTime_h,sStopTime_m,sStopTime_s]
[Duration_h,Duration_m,Duration_s]
[Period_h,Period_m,Period_s]}；
defining Parameters Parameters { [ Hour, Min, Sec ], sStartTime, sStopTime, Duration, Period } INTN, INTM;
the partially executed pseudo-code is as follows:
sStartTime＝cacul[sStartTime_d,sStartTime_h,sStartTime_m,sStartTime_s]
sStopTime＝cacul[sStopTime_d,sStopTime_h,sStopTime_m,sStopTime_s]
some of the parameters are described and illustrated as follows:
the specific parameters of the first start measurement time SyncStartTime are ststarttime _ d, ststarttime _ h, ststarttime _ m, ststarttime _ s, which indicate that the noise monitoring device corresponding to the current day of startup is used as the starting time, the periodic noise measurement function is not started until ststarttime _ h, ststarttime _ m minutes and ststarttime _ s seconds on the ststarttime _ d day of startup, and the first noise measurement is started;
the parameters of the finishing measurement task time SyncStopTime are sStopTime _ d, sStopTime _ h, sStopTime _ m and sStopTime _ s, and represent sStopTime _ h, sStopTime _ m and sStopTime _ s seconds until the second sStopTime _ d day, the periodic noise measurement function of the noise monitoring device is effective all the time, and once the system clock of the noise monitoring device exceeds the synchronous finishing time, the noise measurement activity is stopped immediately;
the parameters of the noise Duration measurement time Duration are Duration _ h, Duration _ m and Duration _ s, which indicate that the Duration _ h, Duration _ m and Duration _ s seconds are required for single noise measurement;
the parameters of the noise measurement Period are Period _ h, Period _ m and Period _ s, and the time interval representing the starting time of two consecutive noise measurements is Period _ h, Period _ m minutes and Period _ s seconds.
Example two
The second embodiment provides a noise monitoring device, as shown in fig. 3 and 4, the noise monitoring device includes a noise monitoring host 1, a wireless data transmission antenna 2, a wide area time service positioning antenna 3, a noise sensor 4, a sensor support rod 5, a first connecting piece 6, a second connecting piece 7, a host installation back plate 8 and a connecting cable 9; the wireless data transmission antenna 2 and the wide area time service positioning antenna 3 are fixedly arranged at the upper end of the noise monitoring host 1. The noise monitoring host 1 is further provided with a charging and configuration multiplexing interface 10 and a power switch 11.
The noise monitoring host 1 is fixedly connected with a host installation back plate 8 through a first connecting piece 6; the connecting cable 10 passes through the sensor supporting rod 5 and is connected with the noise sensor 4 and the noise monitoring host 1; the sensor support rod 5 is also connected with the noise monitoring host 1 through a second connecting piece 7.
As shown in fig. 4, the noise monitoring host 1 is fixed on the host mounting backboard 8 by the second connecting member 7 through the host hooking nut 13, and the host mounting backboard 8 is fixedly mounted on the top pressing side surface of the enclosure of the substation boundary by the backboard mounting nut 12, so that the continuous noise measuring device is fixed at the position where noise measurement is performed.
EXAMPLE III
The third embodiment provides a module composition structure of a noise monitoring host 1, as shown in fig. 5, the noise monitoring host 1 includes a sound level meter, a wide area positioning time service module, a wireless data transmission module, an embedded control system, an energy storage battery and a power supply control system; the sound level meter is used for receiving and statistically analyzing the noise signals collected by the noise sensor; the wide area positioning time service module is used for acquiring and analyzing wide area positioning and time service information; the wireless data transmission module is used for transmitting noise data and noise monitoring host state data; the embedded control system is used for coordinating and processing all modules in the noise monitoring host machine; and the power supply control system is used for converting the energy in the energy storage battery and providing the energy to each module in the noise monitoring host. The sound level meter, the wide area positioning time service module, the wireless data transmission module and the energy storage battery are all in communication connection with the embedded control system, and the energy storage battery is further electrically connected with the power supply control system.
In one embodiment, the key module models of the noise monitoring host 1 are used as follows:
(1) the sound level meter is rated at 1-level precision, the model is AWA6228+, and the 1/3OCT frequency doubling analysis function is started;
(2) the wide area time service positioning module is a GPS module with the model of NEO-7N-0-002;
(3) the wireless data transmission module is an NBIoT module, and the model is M5310-A;
(4) the noise sensor is a free sound field microphone with the model of AWA 14424B;
(5) the main control chip of the embedded control system is STM32F103RBT 6;
(6) the energy storage battery is a lithium ion rechargeable battery with the capacity of 3.7V/11200 mAH.
The selection of the model of the module is only a specific selection description in the preferred embodiment, and in other embodiments, a suitable model may be selected according to an actual application scenario and a collection requirement to implement the corresponding function of the embodiment of the present invention, which is not limited in the present invention.
Example four
The embodiment provides a specific measurement method for performing wide-area synchronous measurement on the transformer substation boundary noise by adopting a wide-area synchronous measurement system composed of a plurality of any one of the noise monitoring devices.
And S1, before the noise monitoring equipment is installed, configuring the same parameters such as the first starting measurement time, the ending task measurement time, the continuous measurement time, the measurement period and the like for each noise monitoring equipment by using a configuration tool.
Specifically, the configuration tool is control software operated at a computer end, a USB interface of a computer and a configuration interface of the noise continuous monitoring device are connected through a USB-to-RS 232 serial port cable, and the measurement time parameter is set as follows:
-first start measurement moment: 24 minutes and 30 seconds at 16 days 0
-end task measurement time: 1 day 06 hours 00 minutes 00 seconds
-noise measurement duration: 0 hour, 1 minute and 0 second
-noise measurement period: 0 hour, 10 minutes and 0 second
S2, after configuration is completed, each noise detection device is started, a set synchronization period is assumed to be 300000 (namely 5min), the initialized synchronization time Synctime is 0, at the moment, the Synctime is an integral multiple (namely 0 time) of the synchronization period SyncPeriod, GPS time service information is read and the current time is analyzed, at the moment, the obtained current time is 16 hours, 22 minutes and 19 seconds, the current time is converted into 58939000 and updated to the synchronization time Synctime, the Synctime is automatically maintained by a millisecond timer SysmsTimer of the system within the following 5min, and after the device terminal runs for 5min, the current updated GPS time is obtained again and the synchronization time Synctime is updated.
S3, because the synchronous start time is converted into the millisecond value of 59070000, when the synchronous time Synctime is increased to 59070000, the noise continuous monitoring device immediately starts single noise measurement, the noise measurement process lasts for 1 minute according to the configured measurement time, the first measurement is completed, the related measurement data are sent, and the measurement of the next period is waited.
And S4, according to the configured noise measurement period, the next period is 16 hours, 34 minutes and 30 seconds, namely 59670000, when the synchronization time Synctime is increased to 59670000, the noise continuous monitoring equipment immediately starts the second single noise measurement, and the measurement process is the same as the previous process.
And S5, converting the task ending measurement time into a millisecond value of 108000000, ending the measurement task when the synchronization time Synctime is increased to 108000000, and exiting all measurements of all noise detection devices.
The present invention is not limited to the foregoing specific embodiments, and is not limited to the foregoing application scenarios of substation boundary noise measurement, and may be applied to any wide area noise detection scenario, which is not limited in the present invention. And the invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of steps disclosed.
Claims (8)
1. A wide area synchronous measurement method of transformer substation factory boundary noise is used in a wide area synchronous measurement system composed of a plurality of noise monitoring devices and is characterized in that the measurement step of the factory boundary noise is decoupled according to a measurement time period, so that the measurement is divided into periodic and repeated noise measurement sub-steps, and the noise measurement sub-steps comprise a first starting measurement step, a measurement continuation step and an ending measurement step; each noise monitoring device in the wide area synchronous measurement system sequentially and automatically synchronously executes each noise measurement sub-step according to the synchronous time;
the wide area synchronous measurement method comprises the following steps:
step 1: initializing the synchronization time expressed by a minimum time unit, firstly constructing a timer SysmsTimer and a synchronization time Synctime, and executing a self-increment 1 operation by the synchronization time Synctime after the timing time is up;
step 2: the method comprises the steps of periodically acquiring wide area time service time, and setting a synchronous period SycnPeriod; when the synchronization time Synctime value is an integral multiple of the SycnPeriod value of the synchronization period, reading wide-area time service information, and analyzing the wide-area time service information to obtain the wide-area time service time;
and step 3: calibrating and updating system synchronization time Synctime according to the acquired wide area time service in a synchronization period;
and 4, step 4: decoupling the continuous noise measurement process into four substeps, and matching the corresponding noise measurement substeps according to the synchronization time Synctime;
further, the continuous noise measurement process in step 4 is decoupled into four noise measurement sub-steps: starting a measuring step, a measuring continuing step and a measuring task ending step for the first time, and matching according to the synchronization time Synctime, wherein the method specifically comprises the following steps:
step 4.1, a measuring substep is started for the first time, after the synchronization time Synctime finishes the first calibration, whether the synchronization time Synctime is the preset first starting measuring time SyncStartTime is detected, and if yes, the next step is continued;
step 4.2, detecting whether the synchronous time Synctime reaches the period measurement time, if so, starting the measurement substep and carrying out single-time noise continuous measurement according to the preset measurement Duration;
4.3, finishing single noise measurement after the preset measurement Duration is reached, and continuing the next step;
and 4.4, detecting whether the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, if not, repeating the step 4.2 after the current measurement Period is finished, starting new single noise measurement and continuously and periodically executing second noise measurement when the next measurement Period is started, … …, measuring noise for the nth time until the synchronous time Synctime is the preset time SyncStopTime for finishing the measurement task, and executing the substep of finishing the measurement and exiting the continuous measurement process of the current noise.
2. The wide-area synchronous measurement method of substation boundary noise according to claim 1, wherein the synchronization time is a time for keeping the system synchronized, which is generated by an accumulative value with a minimum time unit and using the accumulative value of the accumulative value; in addition, the synchronous time also periodically acquires wide-area time service information, and calibrates and updates the value of the accumulation counter according to the time value extracted from the time service information.
3. The wide-area synchronous measurement method for the noise in the transformer substation factory boundary, according to claim 1, wherein the obtaining of the wide-area time service in the step 2 is performed by obtaining positioning time service information from a GPS module, and is used for analyzing or extracting the wide-area GPS time service.
4. The wide-area synchronous measurement method of substation boundary noise according to claim 1, wherein the detection of the synchronization time Synctime value occurs during the whole measurement process, including during the measurement Duration period of a single noise measurement, if the synchronization time Synctime value is an integer multiple of the SycnPeriod value of the synchronization period, the steps 2 and 3 are repeated to complete the calibration and updating of the synchronization time Synctime.
5. A noise monitoring device, which is used in a wide-area synchronous measurement system and adopts any one of the wide-area synchronous measurement methods of claims 1 to 4 to continuously monitor noise, and is characterized in that the noise monitoring device comprises a noise monitoring host (1), a wireless data transmission antenna (2), a wide-area time service positioning antenna (3), a noise sensor (4), a sensor support rod (5), a first connecting piece (6), a second connecting piece (7), a host installation back plate (8) and a connecting cable (9); the wireless data transmission antenna (2) and the wide area time service positioning antenna (3) are fixedly arranged at the upper end of the noise monitoring host (1), and a charging and configuration multiplexing interface (10) and a power switch (11) are further arranged on the noise monitoring host (1); the noise sensor (4) is connected with the top end of the sensor supporting rod (5), wherein the sensor supporting rod (5) is of a telescopic structure with adjustable rod length;
the noise monitoring host (1) is fixedly connected with a host mounting back plate (8) through a first connecting piece (6); the connecting cable (9) penetrates through the sensor supporting rod (5) and is connected with the noise sensor (4) and the noise monitoring host (1); the sensor support rod (5) is further connected with the noise monitoring host (1) through a second connecting piece (7).
6. A noise monitoring device according to claim 5, characterized in that the sensor support rod (5) is a conical tube of several lengths of insulating material, which rod can be retracted and extended.
7. A noise monitoring device according to claim 5, wherein the noise monitoring host (1) is fixed to the host mounting backplate (8) by a host hooking nut (13) using the second connector (7), and the host mounting backplate (8) is fixedly mounted to the top side of the fixture by a backplate mounting nut (12), thereby fixing the noise monitoring device at the location where the noise measurement is to be performed.
8. The noise monitoring device according to claim 7, wherein the noise monitoring host (1) comprises a sound level meter, a wide area positioning time service module, a wireless data transmission module, an embedded control system, an energy storage battery and a power supply control system; the sound level meter is used for receiving and statistically analyzing the noise signals collected by the noise sensor; the wide area positioning time service module is used for acquiring and analyzing wide area positioning and time service information; the wireless data transmission module is used for transmitting noise data and noise monitoring host state data; the embedded control system is used for coordinating and processing all modules in the noise monitoring host machine; the power supply control system is used for converting energy in the energy storage battery and providing the energy to each module in the noise monitoring host; the sound level meter, the wide area positioning time service module, the wireless data transmission module and the energy storage battery are all in communication connection with the embedded control system, and the energy storage battery is further electrically connected with the power supply control system.
Priority Applications (1)
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| CN111458018B (en) * | 2020-04-21 | 2021-04-06 | 国网四川省电力公司电力科学研究院 | Multi-criterion startup logic factory boundary noise continuous monitoring device |
| CN111426377B (en) * | 2020-04-21 | 2021-01-22 | 国网四川省电力公司电力科学研究院 | Layout measurement system for multi-factory-boundary noise continuous monitoring device |
| CN112260892B (en) * | 2020-10-14 | 2023-04-25 | 国网山东省电力公司临朐县供电公司 | Management method, system, terminal and storage medium for dispatching nodes of power distribution system |
| CN112347705B (en) * | 2021-01-07 | 2021-04-02 | 中国电力科学研究院有限公司 | Method and system for establishing transformer substation factory boundary noise model |
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