CN106249107A - A kind of fault detector energy management method - Google Patents

Abstract

The invention discloses a kind of fault detector energy management method, comprise the following steps: on three-phase line, be respectively mounted three fault detectors；Ask for the relative clock drift between fault detector to be synchronized with main synchronization fault detector and initial time offset；Optimize the transmitting power as wireless data sender's fault detector；Choose a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector receives the sample information of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, sampled point markers is carried out time synchronized, utilizes the sample information of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, the sample information of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector and breakdown judge algorithm after synchronizing to judge whether to break down.The present invention improves the accuracy rate of fault detector breakdown judge, is substantially reduced the communication power consumption of fault detector；Solve the problem that existing fault detector fault misdescription rate of failing to report is low, feeder automation level is provided significantly.

Description

A kind of fault detector energy management method

Technical field

The invention belongs to electric power system power distribution electric network fault field of locating technology, particularly relate to a kind of fault detector energy Management method.

Background technology

In distribution network system, lines branch is many, ruuning situation is complicated, be short-circuited, earth fault time, fault section is difficult To determine, bring no small difficulty, especially remote districts to service work, search to get up to waste time and energy especially.Along with China Power distribution automation and the propelling of the upgrading of rural power grids, fault detector, as one of distribution fault location technology means, is thrown the most in a large number Enter to use.Owing to fault detector is arranged on overhead transmission line or in cable duct, repair and replacement are inconvenient, and general employing takes energy CT Power with battery, national Specification: " indicating member (i.e. fault detector) should be able to meet 2000 electrical endurance tests or make Be not less than the requirement of 8 years with the life-span ", so the power consumption of fault detector is had strict demand, national Specification: " to equipped with The standard type indicating member of battery, its quiescent dissipation should be less than 15 μ A, and extended pattern indicating member quiescent dissipation should be less than 40 μ A ". Existing fault detector, for ensureing that power consumption meets standard-required, is all to use one-way communication, increase sampling period and minimizing to report Quantity of information, which results in singlephase earth fault judging nicety rate low, therefore researchs and develops efficient fault detector energy Management system is to ensureing that fault detector is safe and reliable reports complete information and singlephase earth fault reliably to position important reality Meaning.

Summary of the invention

It is an object of the invention to the problems referred to above existed for prior art, it is provided that a kind of fault detector energy management side Method.Technical scheme, utilizes received signal strength to carry out self-adaptative adjustment fault detector transmit power Pt, utilizes fault Indicator supply voltage self adaptation elects the same serial communication of a small bundle of straw, etc. for silkworms to spin cocoons on head, thus solves the limitation of existing scheme existence and lack Point, it is achieved that the effectively management of fault detector energy and the synchronized sampling of fault detector.

The above-mentioned purpose of the present invention is achieved through the following technical solutions:

A kind of fault detector energy management method, comprises the following steps:

Being respectively mounted three fault detectors on step one, three-phase line, respectively A phase fault indicator, B phase fault refer to Showing that device and C phase fault indicator, three fault detectors are periodically exchanged with each other beacon frame, beacon frame contains local when sending Mark, indicator supply voltage, transmitting power are logical between each fault detector and two other fault detector and communication terminal Cross wireless communication module communication；Indicator supply voltage testing circuit it is provided with in each fault detector；Wireless communication module Including rf chip and microprocessor, this locality in beacon frame is designated as wireless communication module during beacon frame information when sending The local clock time of fault detector that beacon frame is submitted to record during physical layer by the MAC layer of wireless communication protocol stack adds Scramble time and interrupt processing that upper rf chip is consumed beacon frame code conversion to be transmitted by radio wave are prolonged Time,

Step 2, set the fault detector of received beacon frame as main synchronization fault detector, set and send beacon frame Fault detector is fault detector to be synchronized, and main synchronization fault detector is according to receiving what fault detector to be synchronized sent Beacon frame, by formula T_j(t)=(1+ α^ij)×T_i(t)+β^ij+ ω sets up the time synchronized mould between fault detector to be synchronized Type,

Wherein, t is with reference to length of a game, T_jT () is the radio communication of the wireless communication module of main synchronization fault detector The local clock time of the main synchronization fault detector that the MAC layer of protocol stack is recorded when receiving the beacon frame of physical layer deducts The radio wave message received is converted to decoding time that Bit data spent to rf chip and interrupt processing is prolonged Time, T_iT () is the local transmission markers in the beacon frame that fault detector to be synchronized sends, α^ijFor fault detector to be synchronized with Relative clock drift between main synchronization fault detector, β^ijFor between fault detector to be synchronized with main synchronization fault detector Initial time offset, ω is random error.Method of least square is utilized to calculate α^ij、β^ijValue,

Step 3, set in A phase fault indicator or B phase fault indicator or C phase fault indicator or communication terminal The both sides of row wireless data transceiving are wireless data recipient and wireless data sender, according to the radio frequency of wireless data recipient The reception power P of transceiving chip_r, the reception power of reliable reception signal of rf chip of wireless data recipient And the transmitting power P in the beacon frame of wireless data sender_t, by formulaCalculating wireless data is sent out Transmitting power after the side's of sending optimizationWireless data recipient will optimize after transmitting powerIt is sent to wireless data Sender, wireless data sender uses the transmitting power after optimizationCarry out wireless with corresponding wireless data recipient Data transmit-receive.

Any one fault detector in step 4, A phase fault indicator, B phase fault indicator, C phase fault indicator All receive the indicator supply voltage in the beacon frame in two other fault detector, choose the highest indicator supply voltage Corresponding fault detector as a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector,

The sample information of each sampled point is sent to a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, sample information bag by non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Vinculum road current information, electric field strength information, temperature and sampled point markers, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is according to formula T_j" (t)=(1 +α^ij)×T_i'(t)+β^ijThe sampled point markers that the sampled point of+ω non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector to receiving is corresponding carries out the time Synchronize.

Wherein, t is with reference to length of a game, T_j" (t) be the sampled point pair of the non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after time synchronized The sampled point markers answered, T_i' (t) be the sampled point markers that the sampled point of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is corresponding, α^ijFor event to be synchronized Relative clock drift between barrier indicator and main synchronization fault detector, wherein, non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as to be synchronized Fault detector, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as main synchronization fault detector, β^ijFor fault detector to be synchronized and main Tong Bu event Initial time offset between barrier indicator, wherein, non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as fault detector to be synchronized, a small bundle of straw, etc. for silkworms to spin cocoons on head fault Indicator is as main synchronization fault detector, and ω is random error.

A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector utilizes the sample information of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after synchronizing, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Sample information and breakdown judge algorithm judge whether to break down.

A kind of fault detector energy management method, also includes a small bundle of straw, etc. for silkworms to spin cocoons on head switch process, particularly as follows:

A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector compares the size of the indicator supply voltage with non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, if there being instruction Device supply voltage is higher than non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector of the indicator supply voltage of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector New a small bundle of straw, etc. for silkworms to spin cocoons on header is also broadcast to other two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors by amendment a small bundle of straw, etc. for silkworms to spin cocoons on header, elects indicator supply voltage A highest fault detector is new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, and remaining two fault detectors are new non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault Indicator.

Described a small bundle of straw, etc. for silkworms to spin cocoons on head switch process is further comprising the steps of: when two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector supply voltages are above The indicator supply voltage of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, and when the indicator supply voltage of two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors is identical, In two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors, new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is selected according to ABC phase sequence.

A kind of fault detector energy management method, also includes sampled data transmitting step: a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector judges When fault-free occurs, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector periodically sends sample information to communication terminal；A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector judges there is event When barrier occurs, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is immediately to communication terminal generation collection information and fault message, and instruction fault of glistening.

In described step 4 when the highest indicator supply voltage has two or three, then select according to ABC phase sequence Go out a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, remaining for non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector,

In described step 1, the cycle being exchanged with each other beacon frame sets according to fault detector clock accuracy and synchronization accuracy Fixed or be predetermined value.

The present invention has the advantages that relative to prior art

Utilize received signal strength (RSSI) to come Automatic adjusument signal transmitting power and fault detector to supply according to it Piezoelectric voltage self adaptation elects a small bundle of straw, etc. for silkworms to spin cocoons on head with serial communication to carry out fault detector energy management, thus solves indicating fault Device energy management problem, realizes three-phase synchronous sampling simultaneously and substantially increases the accuracy rate of fault detector breakdown judge,

Existing fault detector breakdown judge alignment system all use three-phase fault indicator respectively with serial communication, Each fault detector signal transmitting power is fixed, due to fault detector and communication terminal distance, fault detector communication Power consumption is high, it is difficult to ensure that 10 year service life of fault detector；Every phase fault indicator, according to single-phase information failure judgement, causes Existing fault detector fault misdescription rate of failing to report is the highest.The present invention just becomes with 2～4 powers of communication distance according to communication power consumption The feature of ratio, neighbouring three-phase fault indicator first elects a small bundle of straw, etc. for silkworms to spin cocoons on head, the event of non-a small bundle of straw, etc. for silkworms to spin cocoons on head according to fault detector supply voltage self adaptation Sample information is sent to a small bundle of straw, etc. for silkworms to spin cocoons on head by barrier indicator, a small bundle of straw, etc. for silkworms to spin cocoons on head carry out breakdown judge, three-phase sample information and fault message is sent To distant communication terminal, be equivalent to three-phase fault indicator and take on the same serial communication of a small bundle of straw, etc. for silkworms to spin cocoons on head in turn, can be significantly Reduce the communication power consumption of fault detector；Fault detector according to received signal strength (RSSI) self-adaptative adjustment transmit power, Fault detector communication power consumption can be reduced well；Three-phase fault indicator is exchanged with each other local time information, can be fine Realize the synchronized sampling of three-phase fault indicator；A small bundle of straw, etc. for silkworms to spin cocoons on head utilizes three-phase fault indicator synchronized sampling information to sentence to carry out fault Disconnected, fault detector breakdown judge accuracy rate can be provided significantly, solve existing fault detector fault misdescription rate of failing to report high Problem, provides feeder automation level significantly.

Accompanying drawing explanation

Fig. 1 fault detector clock models；

Fig. 2 uses the fault detector each several part energy expenditure ratio chart of communication；

Fig. 3 implementing procedure figure.

Detailed description of the invention

Below in conjunction with the accompanying drawings and technical scheme is described in further detail by specific embodiment.

On A, B, C three-phase in the same place of overhead transmission line, be respectively mounted A phase fault indicator, B phase fault indicator and C phase fault indicator, is installing communication terminal on the electric tower of fault detector, and communication terminal, A phase fault indicate Being respectively provided with 433MHz or 2.4GHz wireless communication module in device, B phase fault indicator and C phase fault indicator, each fault refers to Show and communicated by wireless communication module between device with two other fault detector and communication terminal；Each fault detector has finger Show device supply voltage testing circuit, monitor the supply voltage of fault detector in real time；The rf chip of wireless communication module There is received signal strength indicator (RSSI) function.

Step one, A phase fault indicator, B phase fault indicator and C phase fault indicator are installed on circuit start working Time, A phase fault indicator, B phase fault indicator and C phase fault indicator are periodically exchanged with each other beacon frame (Beacon), believe Mark frame contains local transmission markers, indicator supply voltage, launches power (unit is dbm), is exchanged with each other the week of beacon frame Phase sets according to fault detector clock accuracy and synchronization accuracy or is predetermined value.This locality in beacon frame is designated as letter when sending When mark frame sends, beacon frame is submitted to the fault recorded during physical layer by the MAC layer of wireless communication module wireless communication protocol stack The local clock time of indicator is consumed beacon frame code conversion to be transmitted plus rf chip by radio wave Scramble time and interrupt processing time delay, interrupt processing time delay is that rf chip initiates interrupt signal and wireless communication module Microprocessor responds this interrupt needed for time.MAC layer beats markers and interrupt processing Delay Estima-tion at wireless communication field Belong to prior art.

Step 2, set received beacon frame in A phase fault indicator, B phase fault indicator and the C phase fault indicator Fault detector is main synchronization fault detector, sets the fault detector of transmission beacon frame as fault detector to be synchronized, master Synchronization fault detector, according to receiving the beacon frame that fault detector to be synchronized sends, is set up and event to be synchronized by formula (1) Time synchronized model between barrier indicator.Fault detector to be synchronized is obtained same with main according to beacon frame and time synchronized model Relative clock drift between step fault detector and initial time offset.

Time synchronized model is T_j(t)=(1+ α^ij)×T_i(t)+β^ij+ω (1)

Wherein, t is with reference to length of a game, T_jT () is the wireless communication module radio communication association of main synchronization fault detector The local clock time of the main synchronization fault detector that the MAC layer of view stack is recorded when receiving the beacon frame of physical layer deducts to be penetrated Frequently transceiving chip is converted to decoding time spent of Bit data the radio wave message received and interrupt processing is prolonged Time, interrupt processing time delay is this interruption of microprocessor responds that rf chip initiates interrupt signal and wireless communication module The required time, T_iT () is the local transmission markers in the beacon frame that fault detector to be synchronized sends, α^ijFor fault to be synchronized Relative clock drift between indicator with main synchronization fault detector, β^ijRefer to main synchronization fault for fault detector to be synchronized Show the initial time offset between device, ω～N (0, σ_ω ²), for random error.Method of least square is utilized to calculate α^ij、β^ijValue, i, J ∈ { A, B, C}, i ≠ j.

In the technical program, ignore the message of nanosecond between fault detector to be synchronized with main synchronization fault detector The bag propagation time.

As a example by the time synchronized between A phase fault indicator and B phase fault indicator: B phase fault indicator is as master Synchronizing fault detector, A phase fault indicator is as fault detector to be synchronized.

According to formula (1), obtain formula (2):

T_B(t)=(1+ α^AB)×T_A(t)+β^AB+ω (2)

Wherein, t is with reference to length of a game, T_BT () is the wireless communication module wireless communication protocol stack of B phase fault indicator The local clock time of B phase fault indicator recorded when receiving the beacon frame message of physical layer of MAC layer deduct radio frequency Transceiving chip is converted to the decoding time spent and the interrupt processing time delay of Bit data the radio wave message received, Interrupt processing time delay is that rf chip initiates this interruption of the microprocessor responds in interrupt signal and B phase fault indicator The required time, T_AT () is the local transmission markers in the beacon frame that A phase fault indicator sends, α^ABFor A phase fault indicator And the relative clock drift between B phase fault indicator, β^ABInitial between A phase fault indicator and B phase fault indicator Time migration, ω～N (0, σ_ω ²), for random error.

Step 3, set in A phase fault indicator or B phase fault indicator or C phase fault indicator or communication terminal The both sides of row wireless data transceiving are wireless data recipient and wireless data sender, according to the radio frequency of wireless data recipient The received signal strength indicator (RSSI) (being reception power, unit is dbm) of transceiving chip, the radio frequency of wireless data recipient The reception power of the reliable reception signal of transceiving chip(setting according to receiving sensitivity, unit is dbm), and wireless number According to the transmitting power P in the beacon frame of sender_t(unit is dbm), is calculated wireless data sender by below equation (3) and optimizes After transmitting powerAnd the transmitting power after optimizingBeing sent to wireless data sender, wireless data sends Transmitting power after Fang Caiyong optimizationCarry out wireless data transceiving with corresponding wireless data recipient, so ensure logical Power consumption during receiving and transmitting signal is reduced while letter quality.

$P_t^{adapt}=\frac{P_r^{set}}{P_r}\·P_t---\left(3\right)$

Using A phase fault indicator as wireless data sender, B phase fault indicator as wireless data recipient it is Example:

The rf chip of the communication module of B phase fault indicator can be received signal intensity instruction (RSSI), I.e. B phase fault indicator receives the reception power P of the beacon frame that A phase fault indicator sends_r.A2B.B phase fault indicator by The beacon frame receiving A phase fault indicator can obtain A phase fault indicator transmission beacon frame sending out to B phase fault indicator Send power P_t,A2B。

The reception power P of the beacon frame that A phase fault indicator sends is received according to B phase fault indicator_r.A2B, A phase therefore Barrier indicator sends beacon frame transmit power P to B phase fault indicator_t,A2BWith B phase fault indicator energy reliable reception signal Reception powerA phase fault indicator after calculating A phase fault indicator optimization according to formula (4) send information to B phase The transmitting power of fault detector

$P_{t,A2B}^{adapt}=\frac{P_{r,B}^{set}}{P_{r,A2B}}\·P_{t,A2B}---\left(4\right)$

Any one fault detector in step 4, A phase fault indicator, B phase fault indicator, C phase fault indicator All receive the indicator supply voltage in the beacon frame in two other fault detector, choose the highest indicator supply voltage Corresponding fault detector is as a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, when the highest indicator supply voltage has two or three, then A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is selected according to ABC phase sequence, remaining for non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector,

The sample information of each sampled point is sent to a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, sample information bag by non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Vinculum road current information, electric field strength information, temperature and sampled point markers, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector refers to according to non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault Show the sampled point that the sampled point of the mutual time synchronized model formation (5) of device non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector to receiving is corresponding Markers carries out time synchronized.Fault corresponding when gathering line road current information, electric field strength information, temperature it is designated as during sampled point The local clock time of indicator.

T_j" (t)=(1+ α^ij)×T_i'(t)+β^ij+ω (5)

Wherein, t is with reference to length of a game, T_j" (t) be the sampled point pair of the non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after time synchronized The sampled point markers answered, T_i' (t) be the sampled point markers that the sampled point of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is corresponding, α^ijFor the event of non-a small bundle of straw, etc. for silkworms to spin cocoons on head Barrier indicator refers to as main synchronization fault detector, fault to be synchronized as fault detector to be synchronized, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Show the relative clock drift between device with main synchronization fault detector, β^ijRefer to as fault to be synchronized for non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Show device, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector as main synchronization fault detector, fault detector to be synchronized and main synchronization fault detector it Between initial time offset, ω～N (0, σ_ω ²), for random error.I, j ∈ { A, B, C}, i ≠ j.

With B phase fault indicator for a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, the sampling of A phase fault indicator is believed by B phase fault indicator As a example by sampled point markers in breath carries out time synchronized:

Assume that the sampling period is 12 points of every cycle, be designated as when the sampled data of one cycle of A phase is with corresponding sampled point [(D_A,1,T'_A,1), (D_A,2,T'_A,2) ..., (D_A,11,T'_A,11), (D_A,12,T'_A,12)], ignore white noise, formula (5) set up Time synchronized model can be in the hope of the corresponding local sampling time sequence being synchronized to a small bundle of straw, etc. for silkworms to spin cocoons on head:

T”_B,k=(1+ α^AB)T'_A,k+β^ABK=1,2 ..., 12 (6)

The A phase fault indicator of sampling a small bundle of straw, etc. for silkworms to spin cocoons on head local zone time labelling uses data sequence to be just (D_A,k,T”_B,k), k=1, 2,…,12.Then utilize the interpolation method can be in the hope of the three-phase sample data sequence of a cycle synchronization.

A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector utilizes the sample information of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after synchronizing, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Sample information and breakdown judge algorithm judge whether to break down, and breakdown judge algorithm can use existing fault detector Criterion (such as: current break method differentiate short trouble, quintuple harmonics method uprush method differentiate singlephase earth fault), it is also possible to use Zero sequence current criterion, provides singlephase earth fault judging nicety rate significantly.

Step 5, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector compare the size of the indicator supply voltage with non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, as Fruit has the indicator supply voltage non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector higher than the indicator supply voltage of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, the event of a small bundle of straw, etc. for silkworms to spin cocoons on head Barrier indicator is revised a small bundle of straw, etc. for silkworms to spin cocoons on header and new a small bundle of straw, etc. for silkworms to spin cocoons on header is broadcast to other two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors, elects indicator The fault detector that supply voltage is the highest is new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, and remaining two fault detectors are new non- A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector,

When two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector supply voltages are above the indicator supply voltage of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, and When the indicator supply voltage of two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors is identical, according to ABC phase sequence at two non-a small bundle of straw, etc. for silkworms to spin cocoons on head indicating fault Device selects new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector.

When step 6, fault-free occur, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector periodically sends sample information to communication terminal；Faulty Time raw, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is immediately to communication terminal generation collection information and fault message, and instruction fault of glistening.

Owing to A, B, C three-phase fault indicator spacing is far smaller than the distance of communication terminal, three-phase fault indicator Between communication power consumption well below the communication power consumption with communication terminal.Therefore, the communication cycle between A, B, C three-phase fault indicator Can set shorter, thus be greatly improved the synchronization accuracy of three-phase signal sampling, utilize three-phase information comprehensive analysis permissible simultaneously Judge line fault more accurately.

Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.

Claims (6)

1. a fault detector energy management method, it is characterised in that comprise the following steps:

Three fault detectors, respectively A phase fault indicator, B phase fault indicator it is respectively mounted on step one, three-phase line With C phase fault indicator, three fault detectors are periodically exchanged with each other beacon frame, beacon frame contain local send markers, Indicator supply voltage, transmitting power, pass through between each fault detector and two other fault detector and communication terminal Wireless communication module communicates；Indicator supply voltage testing circuit it is provided with in each fault detector；Wireless communication module bag Including rf chip and microprocessor, this locality in beacon frame is designated as the nothing of wireless communication module during beacon frame information when sending The local clock time of fault detector that beacon frame is submitted to record during physical layer by the MAC layer of line communication protocol stack adds Scramble time that rf chip is consumed beacon frame code conversion to be transmitted by radio wave and interrupt processing time delay,

Step 2, set the fault detector of received beacon frame as main synchronization fault detector, set the fault sending beacon frame Indicator is fault detector to be synchronized, and main synchronization fault detector is according to receiving the beacon that fault detector to be synchronized sends Frame, by formula T_j(t)=(1+ α^ij)×T_i(t)+β^ij+ ω sets up the time synchronized model between fault detector to be synchronized,

Wherein, t is with reference to length of a game, T_jT () is the wireless communication protocol stack of the wireless communication module of main synchronization fault detector The local clock time of main synchronization fault detector recorded when receiving the beacon frame of physical layer of MAC layer deduct radio frequency and receive Send out chip and the radio wave message received is converted to decoding time and interrupt processing time delay, the T that Bit data is spent_i T () is the local transmission markers in the beacon frame that fault detector to be synchronized sends, α^ijSame with main for fault detector to be synchronized Relative clock drift between step fault detector, β^ijAt the beginning of between fault detector to be synchronized with main synchronization fault detector Beginning time migration, ω is random error.Method of least square is utilized to calculate α^ij、β^ijValue,

Step 3, set in A phase fault indicator or B phase fault indicator or C phase fault indicator or communication terminal and carry out nothing The both sides of line data transmit-receive are wireless data recipient and wireless data sender, according to the radio-frequency receiving-transmitting of wireless data recipient The reception power P of chip_r, the reception power of reliable reception signal of rf chip of wireless data recipientAnd Transmitting power P in the beacon frame of wireless data sender_t, by formulaCalculate wireless data sender Transmitting power after optimizationWireless data recipient will optimize after transmitting powerIt is sent to wireless data send Side, wireless data sender uses the transmitting power after optimizationWireless data is carried out with corresponding wireless data recipient Transmitting-receiving.

In step 4, A phase fault indicator, B phase fault indicator, C phase fault indicator, any one fault detector all connects Receive the indicator supply voltage in the beacon frame in two other fault detector, choose the highest indicator supply voltage corresponding Fault detector as a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector,

The sample information of each sampled point is sent to a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector by non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, and sample information includes line Road current information, electric field strength information, temperature and sampled point markers, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is according to formula T_j" (t)=(1+ α^ij) ×T_i'(t)+β^ijThe sampled point markers that the sampled point of+ω non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector to receiving is corresponding carries out time synchronized.

Wherein, t is with reference to length of a game, T_j" (t) be that the sampled point of the non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after time synchronized is corresponding Sampled point markers, T_i' (t) be the sampled point markers that the sampled point of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is corresponding, α^ijRefer to for fault to be synchronized Showing the relative clock drift between device with main synchronization fault detector, wherein, non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as fault to be synchronized Indicator, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as main synchronization fault detector, β^ijRefer to main synchronization fault for fault detector to be synchronized Showing the initial time offset between device, wherein, non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is as fault detector to be synchronized, a small bundle of straw, etc. for silkworms to spin cocoons on head indicating fault Device is as main synchronization fault detector, and ω is random error.

A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector utilizes the sample information of non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector after synchronizing, the sampling of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Information and breakdown judge algorithm judge whether to break down.

A kind of fault detector energy management method the most according to claim 1, it is characterised in that also include that a small bundle of straw, etc. for silkworms to spin cocoons on head is changed Step, particularly as follows:

A small bundle of straw, etc. for silkworms to spin cocoons on head fault detector compares the size of the indicator supply voltage with non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, if there being indicator to supply Piezoelectric voltage is revised higher than non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector of the indicator supply voltage of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector New a small bundle of straw, etc. for silkworms to spin cocoons on header is also broadcast to other two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors by a small bundle of straw, etc. for silkworms to spin cocoons on header, and election indicator supply voltage is the highest A fault detector be new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector, remaining two fault detectors are new non-a small bundle of straw, etc. for silkworms to spin cocoons on head indicating fault Device.

A kind of fault detector energy management method the most according to claim 2, it is characterised in that described a small bundle of straw, etc. for silkworms to spin cocoons on head conversion Step is further comprising the steps of: when two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector supply voltages are above the indicator of a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector Supply voltage, and when the indicator supply voltage of two non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detectors is identical, according to ABC phase sequence at two non-a small bundle of straw, etc. for silkworms to spin cocoons ons Head fault detector selects new a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector.

A kind of fault detector energy management method the most according to claim 1, it is characterised in that also include sampled data Transmitting step: a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector judges when fault-free occurs, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector periodically sends sampling to communication terminal Information；When a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector judges faulty generation, a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector is immediately to communication terminal generation collection information And fault message, and instruction fault of glistening.

A kind of fault detector energy management method the most according to claim 1, it is characterised in that in described step 4 When the highest indicator supply voltage has two or three, then select a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector according to ABC phase sequence, remaining For non-a small bundle of straw, etc. for silkworms to spin cocoons on head fault detector.

A kind of fault detector energy management method the most according to claim 1, it is characterised in that in described step 1, The cycle being exchanged with each other beacon frame according to fault detector clock accuracy and synchronization accuracy setting or is predetermined value.