CN105929301A - Intelligent monitoring device of substation grounding grid corrosion failure points - Google Patents

Abstract

The invention provides an intelligent monitoring device of substation grounding grid corrosion failure points. The intelligent monitoring device includes a sensor network node and a monitoring center server; the sensor network node is arranged at a measured position and is connected with the monitoring center server through a local area network; the monitoring center server provides data services or sends early warning information to remote users through a network; and the sensor network node includes a sensor network positioning module which carries out positioning through adopting an ellipse localization method, a sensor constraining module used for constraining the cost and energy of the sensor, a self power supply module which supplies energy through adopting a dye-sensitized photovoltaic cell, and a data correction module. The intelligent monitoring device of the invention has the advantages of long service life and high monitoring precision. According to the intelligent monitoring device, the positioning speed of the sensor network node is increased, and the cost and energy of the sensor are constrained, and monitoring cost can be saved to the greatest extent.

Description

A kind of grounding net of transformer substation corrosion failure point intelligent monitoring device

Technical field

The present invention relates to electric power monitoring application, be specifically related to a kind of grounding net of transformer substation corrosion failure point intelligent monitoring device.

Background technology

In power system security is monitored, sensor is often distributed in the key point in power system or weak spot.These measuring point cloth Office is relatively decentralized, and owing to the type difference of grounding net of transformer substation also tends to be positioned at different positions.Along with monitoring the time passage with And the growth of sensing data volume, there is bigger difficulty, and for sensor in management, the tissue of sensing data at sensor The data that network node is collected must be the most meaningful in conjunction with its positional information in measuring coordinate system.

Additionally, the working sensor energy consumption that used of monitoring is big and is easily subject to the impact of the environment such as temperature, sensor is caused to be surveyed The data precision obtained reduces, and have impact on precision and the cost of monitoring further.

Summary of the invention

For the problems referred to above, the present invention provide a kind of can quickly alignment sensor network node, simultaneously to the expense of sensor and Energy carries out the grounding net of transformer substation corrosion failure point intelligent monitoring device retrained, degree of accuracy is higher.

The purpose of the present invention realizes by the following technical solutions:

A kind of grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center Server and short message alarm module, described sensor network nodes is arranged in tested position and passes through local with monitoring center server Net is connected, and monitoring center's server provides data, services by network to long-distance user or sends early warning information, it is possible to by short Letter alarm module sends early warning note, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_n∈NP (n)] it is energy constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The invention have the benefit that

1, positioning sensor network nodes is the premise of accurate measurements, arranges and uses the sensor network of oval positioning mode fixed Position module, simplifies location Calculation, accelerates the locating speed of sensor network nodes, set up rapidly grounding net of transformer substation The monitoring system of corrosion failure point；

2, by setting sensor constraints module, for expense and the energy of sensor are retrained, it is possible to transformer station is being connect Monitoring cost is saved on the premise of effectively monitoring to greatest extent in Grounding Grid trouble point；

3, after general sensor node uses a period of time, self-contained power depletion and lost efficacy, be arranged under illumination condition to Sensor continues the coloring matter sensitization type light cell of energy supply, extends the service life of grounding net of transformer substation corrosion failure point monitoring device；

4, it is provided for the data correction module that the data of sensor acquisition are corrected, improves grounding net of transformer substation corrosion event The monitoring accuracy of barrier point intelligent monitoring device.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings Figure.

Fig. 1 is the connection diagram of each intermodule of the present invention.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1

See Fig. 1, the present embodiment one grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring in Central server is connected by LAN, and monitoring center's server provides data, services by network to long-distance user or sends early warning Information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_n∈NP (n)] it is energy constraint_；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition the color continuing energy supply to sensor Element sensitizing type light cell extends the service life of monitoring device；Sensor network route meet bandwidth, time delay, delay jitter, Packet loss constraints, f_b、f_d、f_dj、f_plValue be all 1, monitoring cost relative reduction 10%；According to sensor The correction factor m value of type selecting is 0.01, and monitoring accuracy improves 2% relatively.

Embodiment 2

See Fig. 1, the present embodiment one grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring in Central server is connected by LAN, and monitoring center's server provides data, services by network to long-distance user or sends early warning Information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_n∈NP (n)] it is energy constraint_；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition the color continuing energy supply to sensor Element sensitizing type light cell extends the service life of monitoring device；Sensor network route be unsatisfactory for bandwidth, time delay, delay jitter, Packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.2, monitoring cost relative reduction 15%；According to sensing The correction factor m value of device type selecting is 0.02, and monitoring accuracy improves 3% relatively.

Embodiment 3

See Fig. 1, the present embodiment one grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring in Central server is connected by LAN, and monitoring center's server provides data, services by network to long-distance user or sends early warning Information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_n∈NP (n)] it is energy constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition the color continuing energy supply to sensor Element sensitizing type light cell extends the service life of monitoring device；Sensor network route be unsatisfactory for bandwidth, time delay, delay jitter, Packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.4, monitoring cost relative reduction 8%；According to sensor The correction factor m value of type selecting is 0.03, and monitoring accuracy improves 5% relatively.

Embodiment 4

See Fig. 1, the present embodiment one grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring in Central server is connected by LAN, and monitoring center's server provides data, services by network to long-distance user or sends early warning Information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_n∈NP (n)] it is energy constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition the color continuing energy supply to sensor Element sensitizing type light cell extends the service life of monitoring device；Sensor network route be unsatisfactory for bandwidth, time delay, delay jitter, Packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.6, monitoring cost relative reduction 15%；According to sensing The correction factor m value of device type selecting is 0.04, and monitoring accuracy improves 4% relatively.

Embodiment 5

See Fig. 1, the present embodiment one grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring in Central server is connected by LAN, and monitoring center's server provides data, services by network to long-distance user or sends early warning Information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and arranges sensor network nodes during location Coordinate be that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference mode Coordinate, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)⁺Σ_n∈Np(n)] it is energy constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell；

Further, described grounding net of transformer substation corrosion failure point intelligent monitoring device also include data correction module and with signal at The power detecting module that reason submodule connects；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially Local clock at node to be synchronized adds clock jitter, and the clock completing node synchronizes.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition the color continuing energy supply to sensor Element sensitizing type light cell extends the service life of monitoring device；Sensor network route be unsatisfactory for bandwidth, time delay, delay jitter, Packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.9, monitoring cost relative reduction 12%；According to sensing The correction factor m value of device type selecting is 0.04, and monitoring accuracy improves 4% relatively.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims (3)

1. a grounding net of transformer substation corrosion failure point intelligent monitoring device, including sensor network nodes, LAN, monitoring center's clothes Business device and short message alarm module, described sensor network nodes is arranged in tested position and passes through LAN with monitoring center server Being connected, monitoring center's server provides data, services by network to long-distance user or sends early warning information, it is possible to pass through note Alarm module sends early warning note, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule is by LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the own location information of ad-hoc network of sensors node, After the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading, own location information is delivered to institute State monitoring center's server；Described locator module uses oval positioning mode to position, and sets sensor network nodes during location Coordinate is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the seat of the first reference mode Mark, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, ask Solve equation the position obtaining sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBe respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D is respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl Value be all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy are about Bundle should take minima under conditions of meeting bandwidth, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell.

A kind of grounding net of transformer substation corrosion failure point intelligent monitoring device the most according to claim 1, is characterized in that, also include number According to correcting module and the power detecting module that is connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's service Device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will sensing The power information of device network node sends to described monitoring center server.

A kind of grounding net of transformer substation corrosion failure point intelligent monitoring device the most according to claim 1, is characterized in that, is gathering number According to front, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially the local clock at node to be synchronized Plus clock jitter, the clock completing node synchronizes.