CN108445279B - Synchronous sampling method based on short-frequency wireless in transient recording type fault indicator - Google Patents
Synchronous sampling method based on short-frequency wireless in transient recording type fault indicator Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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Abstract
The invention belongs to the field of intelligent power distribution networks, relates to a related communication technology in a wave recording type fault indicator, and particularly relates to a synchronous sampling method based on short-frequency wireless in a transient wave recording type fault indicator, wherein an acquisition unit in a three-phase circuit is started, a collecting unit sends a synchronous time setting command to the acquisition unit, the time setting command contains a time setting label, and the collecting unit can find corresponding absolute time according to the label; and the acquisition unit receives the time setting command, and performs point supplementing and zero clearing treatment according to the value of the timing acquisition counter, so that the error caused by the crystal oscillator is eliminated, and the three-phase synchronous acquisition is kept. The scheme of the invention realizes the interaction between the line collection unit and the acquisition unit by utilizing the wireless communication technology and the synchronous command, thereby not only reducing the power consumption of the equipment, saving the hardware cost, but also relaxing the requirements on the precision and the stability of the crystal oscillator. And ensures synchronous sampling between the line status monitors.
Description
Technical Field
The invention belongs to the field of intelligent power distribution networks, relates to a related communication technology in a wave recording type fault indicator, and particularly relates to a short-frequency wireless-based synchronous sampling method in a transient wave recording type fault indicator.
Background
Along with the development of the intelligent power distribution network, the intelligent power distribution network line state monitoring system can accurately judge and accurately position line faults by effectively monitoring lines, so that the development trend of the intelligent power distribution network is to improve the operation and maintenance efficiency.
At present, a transient recording type fault indicator in an intelligent power distribution network generally requires synchronous real-time monitoring and sampling of three-phase electric quantity, and has important significance on monitoring effectiveness, line fault judgment, line fault positioning and the like. Two schemes are now more common:
the first scheme is as follows: and synchronously collecting the alternating current electric quantity based on the time tag. The scheme is based on serial port time information and synchronous pulses sent by a GPS receiving board, a real-time clock of the whole monitoring system is established in the monitoring system, and the monitoring system can read out the system time of the state monitor at any time. The scheme has the advantages that the sampling in the whole period can be ensured, when the system frequency drifts, the sampling frequency can be automatically changed according to the phase-locked loop, and the same point number is ensured to be averagely collected in each period; the disadvantage is that the amount of information is large, when the information of the sampling point is transmitted, the corresponding time tag needs to be transmitted, which makes the data processing more complex, and when the software clock has larger error, the clock inaccuracy will cause the failure of synchronous sampling, in addition, because each phase line state monitor needs a GPS receiving device, the hardware cost is increased.
Scheme II: and synchronously collecting the alternating current electric quantity based on absolute time. The scheme is based on a GPS time synchronization and high-precision stable oscillating circuit to ensure that all line state monitors start to sample according to the same frequency at the same time. The scheme has the advantages that accumulated errors caused by the crystal oscillator can be eliminated, and compared with the first scheme, the transmitted data volume is relatively small; the GPS time synchronization power consumption is large, each phase circuit state monitor needs a GPS receiving device and a high-precision crystal oscillator, and the hardware cost is increased.
Disclosure of Invention
Aiming at the problems, the invention provides a processing method for realizing time synchronization between line acquisition units by a wireless communication technology in a transient recording type fault indicator in an intelligent power distribution network so as to realize synchronous acquisition of three-phase monitoring current and monitoring voltage information and synchronous recording, namely a short-frequency wireless-based synchronous sampling method in the transient recording type fault indicator.
In order to achieve the aim, the invention adopts the technical proposal that,
a synchronous sampling method based on short-frequency wireless in a transient recording type fault indicator is characterized in that an acquisition unit in a three-phase line is started, a collection unit sends a synchronous time setting command to the acquisition unit, the time setting command contains a time setting label, and the collection unit can find corresponding absolute time according to the label;
the acquisition unit receives the time setting command, and performs point supplementing and zero clearing treatment according to the counter value of the timing acquisition unit, so that the error caused by the crystal oscillator is eliminated, and three-phase synchronous acquisition is kept; meanwhile, the acquisition point numbers of the three-phase acquisition units are in one-to-one correspondence, and any two-phase acquisition unit can find the acquisition point at the corresponding moment in a time interval according to the acquisition point number of the other phase;
the absolute time processing is as follows:
the collecting unit records the absolute time T1 of the time of sending the time tick mark command while sending the time tick mark;
because of the framing and de-framing and the transceiving characteristics of the short-frequency wireless, there is a time delay Δ t1 from the time when the time tick command is sent to the time when the time tick command is actually sent out through the short-frequency wireless; the absolute time required by the acquisition unit can be any time, so that the absolute time recorded by the collection unit can not meet the requirement on the absolute time only, and the coordination of relative time in the acquisition unit is required;
the time T2 of the acquisition unit timer is the recorded time delay Δ T2 from the time when the acquisition unit actually receives the time synchronization command sent by the aggregation unit to the time when the acquisition unit actually receives the time synchronization command sent by the aggregation unit due to the process of air transmission and frame receiving and decoding; the acquisition unit receives the time setting command of the collection unit, and a timer of the acquisition unit is reset and stores the time setting label at the time; when the acquisition unit needs the absolute time of a certain moment, the acquisition unit transmits the time setting mark, the timer value T2 and the time delay error delta T2 of the moment to the collecting unit, and the collecting unit can calculate the absolute time of the moment as follows through the information:
T＝T1+Δt1+T2+Δt2。
preferably, the point-filling and zero-clearing processes are respectively as follows:
zero clearing, namely defining the absolute time of the time setting label command sending time which is recorded when the collecting unit sends the time setting label as T1, zero clearing the counter of the timing collector when the collecting unit receives the synchronous time setting command, and defining the timer time of the collecting unit when the synchronous time setting command is not received as T2;
the point is complemented, the maximum time error which can be kept under the equal time interval pair is defined as t1, the counter value of the timing collector when the synchronous pair command is received is defined as t2, when t2> t1, the time of the collecting timer is delayed, if the timer is cleared, the collecting unit collects one less point, we need to complement it, the complemented point is calculated as follows,
setting the point acquired during zero clearing as sin (theta), the point acquired before zero clearing as sin (theta-delta theta), and setting the point to be compensated after zero clearing as sin (theta + delta theta), wherein delta theta is equal-angle sampling interval, and setting the point to be compensated as sin (theta + delta theta)
sin(θ-Δθ)+sin(θ+Δθ)
＝sin(θ)cos(Δθ)+cos(Δθ)sin(θ)+sin(θ)cos(Δθ)-cos(Δθ)sin(θ)
＝2*sin(θ)cos(Δθ)
sin(θ+Δθ)＝2*sin(θ)cos(Δθ)-sin(θ-Δθ)
The size of the supplementary point value is obtained.
Preferably, the three-phase acquisition point numbers correspond to each other one by one, the acquisition units acquire data at regular time in the timed interruption, when the acquisition units receive the time setting command, the corresponding acquisition point numbers are subjected to zero clearing treatment, the priority problem of the time setting interruption and the sampling interruption is considered, the consistency of the time setting labels cannot be ensured by simple zero clearing treatment, and whether the value recorded by the acquisition point numbers at the next moment is in the time period after the time setting or in the time period before the time setting which is not processed because the time setting interruption is interrupted is determined according to the count value t2 of the acquisition timer when the time setting command is received; the process is as follows:
when the count value of the acquisition unit when the time tick command is received is set as t2, and the count value of the acquisition unit when the acquisition point number value in the timed acquisition interruption is calculated is set as t3, the acquisition label at the next moment is not processed when t2 is less than t 3.
Preferably, in the process of clearing, because the plurality of acquisition units receive the time setting command at the same time and clear the collector at the same time, the information time collected by the acquisition units is synchronous.
Preferably, based on the synchronous information acquisition time, the acquisition point numbers are correspondingly processed at the time synchronization moment, so that the acquisition point numbers of the three-phase acquisition units at the same moment are in one-to-one correspondence, and any two-phase acquisition unit can find data at the corresponding moment according to the point number of the sampling point recorded by the other phase acquisition unit.
Preferably, the collecting unit in the transient recording type fault indicator can acquire the absolute time required by the acquisition unit according to the time tick and the relative time recorded by the acquisition unit, and the absolute time precision can reach us level.
Preferably, the transient recording type fault indicator is composed of a collecting unit and three collecting units, and the devices are communicated with each other based on a wireless communication technology.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the invention mainly solves the problem that in the prior art (a second scheme in the background art), a stable oscillation circuit formed by GPS time synchronization and a high-precision crystal oscillator is utilized to ensure that all line state acquisition units start to sample at the same time according to the same frequency to ensure that the power consumption of a data synchronization scheme is larger. The invention provides a synchronization scheme based on short-frequency wireless interaction, which is not completely based on GPS time synchronization, has low requirements on the precision and stability of a crystal oscillator, and not only enlarges the range of the crystal oscillator, but also reduces the power consumption of equipment;
2. the synchronization process of the invention is based on wireless communication technology and synchronization command, a large amount of data does not need to be sent in the interaction process, the wireless power consumption is much smaller than that of the GPS on the premise of eliminating the accumulated error brought by the crystal oscillator, in addition, the time of timing sending in the interaction process can be set according to the precision and stability of the crystal oscillator, thus eliminating the limitation on the selection of the crystal oscillator;
3. the scheme of the invention realizes the interaction between the line collection unit and the acquisition unit by utilizing the wireless communication technology and the synchronous command, thereby not only reducing the power consumption of the equipment, saving the hardware cost, but also relaxing the requirements on the precision and the stability of the crystal oscillator. And the synchronous sampling among the line state acquisition units is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic diagram of the working principle of the interaction process of the short-frequency wireless-based synchronous sampling method in the transient recording type fault indicator;
FIG. 2 is a schematic diagram of a transient recording fault indicator;
fig. 3 is a schematic diagram of the working principle of the transient recording type fault indicator.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Embodiment 1, as shown in fig. 1, fig. 2, and fig. 3, the present invention provides a short-frequency wireless-based synchronous sampling method in a transient recording-type fault indicator, that is, a short-frequency wireless interaction-based synchronization scheme, which is not based on GPS time synchronization completely, and has low requirements on accuracy and stability of a crystal oscillator, and the scheme not only expands a range of the crystal oscillator, but also reduces power consumption of a device.
In the transient recording type fault indicator, 3 acquisition units are required to synchronously sample the electric quantity in order to obtain accurate zero sequence current.
In order to ensure the acquisition time synchronization among the acquisition units, the collecting unit periodically sends a synchronous time synchronization command with a time synchronization label to the acquisition units by utilizing a wireless communication technology, and when the monitor receives the time synchronization command, the monitor correspondingly adjusts the acquisition time of the monitor and stores the received time synchronization label. When the collecting unit calls the collecting unit to collect information, the absolute time of the collecting unit to collect information can be obtained according to the time setting labels and the communication time stored by the collecting unit. The interaction process is shown in FIG. 1
Wherein T1 represents the interval for sending the synchronous pair time command, the specific size of which is related to the precision of the device timer, and when the monitor receives the synchronous pair time command, the counter of the timing collector is cleared. Because a plurality of monitors receive the time setting command at the same time and clear the collector at the same time, the information time collected by the monitors is synchronous; t2 shows that the monitor reports abnormal time setting of the monitor terminal when the synchronous time setting command is not received in the time.
Assuming that t1 represents the maximum time error that can be maintained during the equal time interval pairs, and t2 represents the counter value of the timing acquisition unit when the synchronous pair command is received, based on the above condition, the time of the acquisition timer must be delayed when t2> t1, if the timer is cleared, the monitor will acquire one less point and we need to add one point to it, and the added point calculation process is as follows:
setting the point acquired during zero clearing as sin (theta), the point acquired before zero clearing as sin (theta-delta theta), and setting the point to be compensated after zero clearing as sin (theta + delta theta), wherein delta theta is equal-angle sampling interval, and setting the point to be compensated as sin (theta + delta theta)
sin(θ-Δθ)+sin(θ+Δθ)
＝sin(θ)cos(Δθ)+cos(Δθ)sin(θ)+sin(θ)cos(Δθ)-cos(Δθ)sin(θ)
＝2*sin(θ)cos(Δθ)
sin(θ+Δθ)＝2*sin(θ)cos(Δθ)-sin(θ-Δθ)
By the formula, the magnitude of the supplementary point value can be obtained.
The three-phase acquisition point numbers correspond to each other one by one, the acquisition units acquire data at fixed time in the timed interruption, when the acquisition units receive the time setting command, the corresponding acquisition point numbers are subjected to zero clearing treatment, the priority problem of the time setting interruption and the sampling interruption is considered, the consistency of the time setting labels cannot be ensured through simple zero clearing treatment, and whether the value recorded by the acquisition point numbers at the next moment is in the time period after the time setting or in the time period before the time setting which is not processed because the time setting interruption is performed needs to be determined according to the count value t2 of the acquisition timer when the time setting command is received. The process is as follows:
when the count value of the acquisition unit when the time tick command is received is set as t2, and the count value of the acquisition unit when the acquisition point number value in the timed acquisition interruption is calculated is set as t3, the acquisition label at the next moment is not processed when t2 is less than t 3.
The invention is described below in connection with fig. 2 and 3.
Fig. 2 shows that the transient recording type fault indicator is composed of a collecting unit and three collecting units, and all devices communicate with each other based on a wireless communication technology. The starting time of the three-phase line acquisition unit is difficult to ensure to be the same, so the acquisition time cannot ensure to be synchronous acquisition; secondly, an oscillation circuit formed by the crystal oscillator has errors, if the oscillation circuit is not processed in time, the errors can be accumulated, and synchronous acquisition of a three-phase line state monitor cannot be guaranteed. After the three-phase line acquisition unit is started, the collecting unit sends a synchronous time setting command to the acquisition unit, and meanwhile, the time setting command comprises a time setting label, and the collecting unit can find corresponding absolute time according to the label. And the acquisition unit receives the time setting command, and performs point supplementing and zero clearing treatment according to the counter value of the timing acquisition unit, so that the error caused by the crystal oscillator is eliminated, and the three-phase synchronous acquisition is kept. Based on this background, suppose phase a is anomalous, which informs B, C both phases while recording is initiated. When B, C two phases receive the synchronous start recording command and calculate the a-phase start recording time according to the synchronous start recording point sent by the a-phase, it can avoid B, C phase start delay caused by communication and other reasons, and ensure three-phase synchronous start recording, as shown in fig. 3. The collecting unit can calculate the absolute time of the wave recording starting time according to the time setting labels of the wave recording starting time.
The main focus of this patent is the processing of absolute time, that is, the collecting unit will record the absolute time T1 when the time tick command is sent while sending the time tick. Because of the framing, deframing and the inherent transmit-receive characteristics of the short-frequency radio, there is a time delay Δ t1 from the time when the tick command is sent to the time when the tick command is actually sent out over the short-frequency radio. The absolute time required by the acquisition unit can be any time, so that the absolute time recorded by the collecting unit alone cannot meet the requirement on the absolute time, which requires the coordination of the relative time in the acquisition unit. The time T2 of the acquisition unit timer is the recorded time delay Δ T2 from the time when the acquisition unit actually receives the time synchronization command sent by the aggregation unit to the time when the acquisition unit actually receives the time synchronization command sent by the aggregation unit due to the process of over-the-air transmission and frame receiving and decoding. The acquisition unit receives the time setting command of the collection unit, and the timer of the acquisition unit is reset and stores the time setting label at this time. When the acquisition unit needs the absolute time of a certain moment, the acquisition unit transmits the time setting mark, the timer value T2 and the time delay error delta T2 of the moment to the collecting unit, and the collecting unit can calculate the absolute time of the moment as follows through the information:
t1+ Δ T1+ T2+ Δ T2 where Δ T1 may be obtained by the time difference between the time when the tick command is sent and the time when the transmission completion flag is received; at 2 may be calculated based on the length of data sent, the over-the-air transmission rate of the radio, and the time of reception of the deframing.
Based on synchronous information acquisition time, corresponding processing is carried out on the acquisition point numbers at the time synchronization moment, so that the acquisition point numbers of the three-phase acquisition units at the same moment are in one-to-one correspondence, and any two-phase acquisition unit can find data at the corresponding moment according to the point number of the sampling point recorded by the other phase acquisition unit.
The collecting unit in the transient recording type fault indicator can acquire the absolute time required by the acquisition unit according to the time setting labels and the relative time recorded by the acquisition unit, and the absolute time precision can reach us level.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (4)
1. A synchronous sampling method based on short-frequency wireless in a transient recording type fault indicator is characterized in that,
starting a collecting unit in a three-phase line, sending a synchronous time setting command to the collecting unit by a collecting unit, wherein the time setting command comprises a time setting label, and the collecting unit can find corresponding absolute time according to the label;
the acquisition unit receives the time setting command, and performs point supplementing and zero clearing treatment according to the counter value of the timing acquisition unit, so that the error caused by the crystal oscillator is eliminated, and three-phase synchronous acquisition is kept; meanwhile, the acquisition point numbers of the three-phase acquisition units are in one-to-one correspondence, and any two-phase acquisition unit can find the acquisition point at the corresponding moment in a time interval according to the acquisition point number of the other phase;
the absolute time processing is as follows:
the collecting unit records the absolute time T1 of the time of sending the time tick mark command while sending the time tick mark; because of the framing and de-framing and the transceiving characteristics of the short-frequency wireless, there is a time delay Δ t1 from the time when the time tick command is sent to the time when the time tick command is actually sent out through the short-frequency wireless;
the time T2 of the acquisition unit timer is the recorded relative time, and the time delay delta T2 exists between the time when the acquisition unit really receives the time setting command sent by the collection unit and the time when the acquisition unit really receives the time setting command sent by the collection unit because of the process of air transmission and frame receiving and decoding; the acquisition unit receives the time setting command of the collection unit, and a timer of the acquisition unit is reset and stores the time setting label at the time; when the acquisition unit needs the absolute time of a certain moment, the acquisition unit transmits the time setting mark, the timer value T2 and the time delay error delta T2 of the moment to the collecting unit, and the collecting unit can calculate the absolute time of the moment as follows through the information:
T=T1+Δt1+T2+Δt2；
the point supplementing and zero clearing treatment is respectively as follows:
resetting, namely resetting the counter of the timing collector when the collection unit receives the synchronous time setting command, and defining the timer time of the collection unit when the synchronous time setting command is not received as T2;
the point is complemented, the maximum time error which can be kept under the equal time interval pair is defined as t1, the counter value of the timing collector when the synchronous pair command is received is defined as t2, when t2> t1, the time of the collecting timer is delayed, if the timer is cleared, the collecting unit collects one less point, we need to complement it, the complemented point is calculated as follows,
and setting the collected points during zero clearing as the points collected before zero clearing, and setting the points to be compensated after zero clearing as the points to be compensated, wherein the sampling intervals are equal angles, and the magnitude of the value of the compensated point is obtained.
2. The short-frequency wireless-based synchronous sampling method in the transient recording type fault indicator according to claim 1, wherein three-phase collection point numbers correspond one to one, when a time setting command is received by a collection unit, the corresponding collection point numbers are subjected to zero clearing processing, the consistency of the time setting labels cannot be guaranteed through simple zero clearing processing, and whether the value recorded by the collection point number at the next moment is in a time period after the time setting or in a time period before the time setting which is not processed because of time setting interruption is determined according to a count value t2 of a collection timer when the time setting command is received.
3. The short-frequency wireless-based synchronous sampling method in the transient recording type fault indicator according to claim 2, wherein the acquisition point numbers are correspondingly processed at the time of synchronization based on the synchronous acquisition information time, so that the acquisition point numbers of the three-phase acquisition units at the same time are in one-to-one correspondence, and any two-phase acquisition unit can find data at the corresponding time according to the point number of the sampling point recorded by the other phase acquisition unit.
4. The method for short-frequency wireless-based synchronous sampling in a transient waveform recording type fault indicator according to claim 1, wherein the transient waveform recording type fault indicator is composed of a collecting unit and three collecting units, and each device communicates based on a wireless communication technology.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047434A (en) * | 2007-04-10 | 2007-10-03 | 华为技术有限公司 | Time tag synchronous method, system and device |
| JP2009027358A (en) * | 2007-07-18 | 2009-02-05 | Nissan Motor Co Ltd | Data repeater, data relaying method, and communication network system |
| CN103279650A (en) * | 2013-05-10 | 2013-09-04 | 国家电网公司 | Sampling value synchronization interpolation algorithm with data delay jitter or loss compatible |
| EP2725728A1 (en) * | 2012-10-29 | 2014-04-30 | ADVA AG Optical Networking | Method and device for assessing the performance of one or more packet synchronization services in a packet data transmission network |
| CN104683057A (en) * | 2015-02-15 | 2015-06-03 | 大唐联仪科技有限公司 | Method and system of time synchronization among multiple instruments |
| CN105338613A (en) * | 2015-11-02 | 2016-02-17 | 珠海许继电气有限公司 | System and method for time setting synchronization of scattered nodes by use of wireless communication |
| CN106455039A (en) * | 2016-11-08 | 2017-02-22 | 石家庄科林电气股份有限公司 | Communication terminal, network and method for improving time synchronization accuracy in power distribution network |
| CN106932632A (en) * | 2017-05-08 | 2017-07-07 | 江苏轶电力科技有限公司 | The system that Multipoint synchronous measure micro-current |
| CN107453405A (en) * | 2017-08-14 | 2017-12-08 | 光科技股份有限公司 | A kind of Fault Locating Method and system based on transient state recording fault detector |
-
2018
- 2018-02-12 CN CN201810144061.3A patent/CN108445279B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047434A (en) * | 2007-04-10 | 2007-10-03 | 华为技术有限公司 | Time tag synchronous method, system and device |
| JP2009027358A (en) * | 2007-07-18 | 2009-02-05 | Nissan Motor Co Ltd | Data repeater, data relaying method, and communication network system |
| EP2725728A1 (en) * | 2012-10-29 | 2014-04-30 | ADVA AG Optical Networking | Method and device for assessing the performance of one or more packet synchronization services in a packet data transmission network |
| CN103279650A (en) * | 2013-05-10 | 2013-09-04 | 国家电网公司 | Sampling value synchronization interpolation algorithm with data delay jitter or loss compatible |
| CN104683057A (en) * | 2015-02-15 | 2015-06-03 | 大唐联仪科技有限公司 | Method and system of time synchronization among multiple instruments |
| CN105338613A (en) * | 2015-11-02 | 2016-02-17 | 珠海许继电气有限公司 | System and method for time setting synchronization of scattered nodes by use of wireless communication |
| CN106455039A (en) * | 2016-11-08 | 2017-02-22 | 石家庄科林电气股份有限公司 | Communication terminal, network and method for improving time synchronization accuracy in power distribution network |
| CN106932632A (en) * | 2017-05-08 | 2017-07-07 | 江苏轶电力科技有限公司 | The system that Multipoint synchronous measure micro-current |
| CN107453405A (en) * | 2017-08-14 | 2017-12-08 | 光科技股份有限公司 | A kind of Fault Locating Method and system based on transient state recording fault detector |
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