CN105868842A - Intelligent substation capable of predicting service life of its own in real time - Google Patents

Abstract

The present invention discloses an intelligent substation capable of predicting a service life of its own in real time. The intelligent substation comprises a substation main body and an intelligent monitoring system disposed on the substation main body. The system comprises a monitoring module, a data processing module, a secure state assessment module, a warning and alarm module, and a simulation display module. The monitoring module comprises a wireless sensor network, a strain sensor assembly, and a displacement sensor; the data processing module comprises a collection center station, a signal conditioner, and a signal transmission apparatus; the secure state assessment module comprises a microprocessor; the warning and alarm module comprises an analysis processor and an alarm; and the simulation display module comprises a three-dimensional GIS simulation platform. The intelligent substation disclosed by the present invention implements real-time monitoring on the health of the substation main body, and is capable of predicting the remaining service life of the substation accurately and intelligently according to the monitoring data.

Description

A kind of can the intelligent substation of real-time estimate its shelf-life

Technical field

The present invention relates to Substation Design field, be specifically related to a kind of can the intelligent substation of real-time estimate its shelf-life.

Background technology

Transformer station's great majority in correlation technique cannot be according to himself residual life of the data prediction of Sensor monitoring.This lacks Falling into causes transformer station attendant to need the correlation experience by oneself to judge the data that sensor is fed back, and reduces transformer station The promptness of monitoring, also considerably increases the workload of transformer station attendant simultaneously.

Summary of the invention

For the problems referred to above, the present invention provide a kind of can the intelligent substation of real-time estimate its shelf-life.

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

A kind of can the intelligent substation of real-time estimate its shelf-life, including transformer substation body and the intelligence prison that is arranged on transformer substation body Examining system, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, institute State the average displacement that the displacement data transmitted by signal transmitting apparatus is carried out being calculated between two time phase t by microprocessor Difference, the most first to compensate displacement difference owing to transformer substation body exists phenomenon of expanding with heat and contract with cold, then by average displacement difference and rule Location is moved difference limen value and is compared, it is judged that described average displacement difference is the most in a safe condition, and according to strain sensor assemblies 24h Monitoring Data calculate, obtain stress amplitude spectrum, according to stress amplitude spectrum calculate transformer substation body remanent fatigue life, and will Described remanent fatigue life compares with structure projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\Δs}}^{\′}=\mathrm{\Δ}s-\frac{{\mathrm{\α}}_1{a}_1+{\mathrm{\α}}_2{a}_2+...+{\mathrm{\α}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\·\underset{i}{\overset{n}{\Σ}}\[\frac{p_i}{{10}^7}\·{\left(\frac{{\mathrm{\σ}}_x\left(i\right)}{{\mathrm{\σ}}_b}\right)}^k\]}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

D, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

E, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by f, result according to safe condition module estimation is in GIS platform Interface on show.

The invention have the benefit that and connected by the structure of modules, it is achieved the full-automatic prison of the dynamical health of transformer station Survey, it is simple to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure with wireless sensor network Monitoring, covers wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve prison The work efficiency of examining system；Propose the computing formula of average displacement, and average displacement is corrected, use average bit Move and compare judgement with displacement threshold value, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, and improve should The certainty of measurement become, and then improve the overall measurement accuracy of system；Utilize the health of GIS emulation platform imitating substation body Situation, has the good effect carrying out interface alternation with user.

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 structured flowchart of the present invention.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1: as shown in Figure 1 a kind of can the intelligent substation of real-time estimate its shelf-life, it include transformer substation body and Being arranged on the intelligent monitor system of transformer substation body, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The average displacement that the displacement data that device transmits carries out being calculated between two time phase t is poor, owing to transformer substation body exists Displacement difference the most first to be compensated by phenomenon of expanding with heat and contract with cold, and then average displacement difference is compared with regulation displacement difference limen value, Judge that described average displacement difference is the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, Obtain stress amplitude spectrum, calculate the remanent fatigue life of transformer substation body according to stress amplitude spectrum, and by described remanent fatigue life and knot Structure compares projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring of the dynamical health of transformer station, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure monitoring with wireless sensor network, Cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve monitoring system Work efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and position Move threshold value and compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the survey of strain Accuracy of measurement, and then improve the overall measurement accuracy of system；Utilize the health status of GIS emulation platform imitating substation body, There is the good effect carrying out interface alternation with user；Time phase t=24h, it is achieved that transformer substation body dynamical health complete Automatic monitoring, the overall measurement accuracy of system improves 15%.

Embodiment 2: as shown in Figure 1 a kind of can the intelligent substation of real-time estimate its shelf-life, it include transformer substation body and Being arranged on the intelligent monitor system of transformer substation body, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The average displacement that the displacement data that device transmits carries out being calculated between two time phase t is poor, owing to transformer substation body exists Displacement difference the most first to be compensated by phenomenon of expanding with heat and contract with cold, and then average displacement difference is compared with regulation displacement difference limen value, Judge that described average displacement difference is the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, Obtain stress amplitude spectrum, calculate the remanent fatigue life of transformer substation body according to stress amplitude spectrum, and by described remanent fatigue life and knot Structure compares projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring of the dynamical health of transformer station, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure monitoring with wireless sensor network, Cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve monitoring system Work efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and position Move threshold value and compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the survey of strain Accuracy of measurement, and then improve the overall measurement accuracy of system；Utilize the health status of GIS emulation platform imitating substation body, There is the good effect carrying out interface alternation with user；Time phase t=28h, it is achieved that transformer substation body dynamical health complete Automatic monitoring, the overall measurement accuracy of system improves 17%.

Embodiment 3: as shown in Figure 1 a kind of can the intelligent substation of real-time estimate its shelf-life, it include transformer substation body and Being arranged on the intelligent monitor system of transformer substation body, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The average displacement that the displacement data that device transmits carries out being calculated between two time phase t is poor, owing to transformer substation body exists Displacement difference the most first to be compensated by phenomenon of expanding with heat and contract with cold, and then average displacement difference is compared with regulation displacement difference limen value, Judge that described average displacement difference is the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, Obtain stress amplitude spectrum, calculate the remanent fatigue life of transformer substation body according to stress amplitude spectrum, and by described remanent fatigue life and knot Structure compares projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring of the dynamical health of transformer station, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure monitoring with wireless sensor network, Cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve monitoring system Work efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and position Move threshold value and compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the survey of strain Accuracy of measurement, and then improve the overall measurement accuracy of system；Utilize the health status of GIS emulation platform imitating substation body, There is the good effect carrying out interface alternation with user；Time phase t=32h, it is achieved that transformer substation body dynamical health complete Automatic monitoring, the overall measurement accuracy of system improves 18%.

Embodiment 4: as shown in Figure 1 a kind of can the intelligent substation of real-time estimate its shelf-life, it include transformer substation body and Being arranged on the intelligent monitor system of transformer substation body, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The average displacement that the displacement data that device transmits carries out being calculated between two time phase t is poor, owing to transformer substation body exists Displacement difference the most first to be compensated by phenomenon of expanding with heat and contract with cold, and then average displacement difference is compared with regulation displacement difference limen value, Judge that described average displacement difference is the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, Obtain stress amplitude spectrum, calculate the remanent fatigue life of transformer substation body according to stress amplitude spectrum, and by described remanent fatigue life and knot Structure compares projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring of the dynamical health of transformer station, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure monitoring with wireless sensor network, Cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve monitoring system Work efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and position Move threshold value and compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the survey of strain Accuracy of measurement, and then improve the overall measurement accuracy of system；Utilize the health status of GIS emulation platform imitating substation body, There is the good effect carrying out interface alternation with user；Time phase t=36h, it is achieved that transformer substation body dynamical health complete Automatic monitoring, the overall measurement accuracy of system improves 20%.

Embodiment 5: as shown in Figure 1 a kind of can the intelligent substation of real-time estimate its shelf-life, it include transformer substation body and Being arranged on the intelligent monitor system of transformer substation body, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The average displacement that the displacement data that device transmits carries out being calculated between two time phase t is poor, owing to transformer substation body exists Displacement difference the most first to be compensated by phenomenon of expanding with heat and contract with cold, and then average displacement difference is compared with regulation displacement difference limen value, Judge that described average displacement difference is the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, Obtain stress amplitude spectrum, calculate the remanent fatigue life of transformer substation body according to stress amplitude spectrum, and by described remanent fatigue life and knot Structure compares projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring of the dynamical health of transformer station, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out transformer substation body health structure monitoring with wireless sensor network, Cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve monitoring system Work efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and position Move threshold value and compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the survey of strain Accuracy of measurement, and then improve the overall measurement accuracy of system；Utilize the health status of GIS emulation platform imitating substation body, There is the good effect carrying out interface alternation with user；Time phase t=40h, it is achieved that transformer substation body dynamical health complete Automatic monitoring, the overall measurement accuracy of system improves 21%.

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 (1)

1. can the intelligent substation of real-time estimate its shelf-life, it is characterized in that, including transformer substation body be arranged on transformer substation body Intelligent monitor system, described intelligent monitor system includes:

(1) monitoring modular, including the wireless sensor network that transformer substation body health is monitored, for monitoring substation originally The strain sensor assemblies of each dangerous position of body and displacement transducer, transformer substation body is good for by described wireless sensor network all standing Health structure is monitored, and meanwhile, network uses advanced physical message emerging system, real-time to transformer substation body health structure Perception；Institute's displacement sensors is for monitoring the working base point of dangerous position change in displacement and being used for checking working base point stability Overall datum mark based on carry out three dimensions displacement monitoring, each dangerous position of described transformer substation body, working base point and complete Office's datum mark determines by transformer substation body is carried out FEM Simulation；Described strain sensor assemblies include performance parameters and Completely identical in structure work strain transducer and temperature-compensating strain transducer, described work strain transducer and temperature It is arranged on each dangerous position of transformer substation body after the series connection of compensation strain transducer；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, institute State the average displacement that the displacement data transmitted by signal transmitting apparatus is carried out being calculated between two time phase t by microprocessor Difference, the most first to compensate displacement difference owing to transformer substation body exists phenomenon of expanding with heat and contract with cold, then by average displacement difference and rule Location is moved difference limen value and is compared, it is judged that described average displacement difference is the most in a safe condition, and according to strain sensor assemblies 24h Monitoring Data calculate, obtain stress amplitude spectrum, according to stress amplitude spectrum calculate transformer substation body remanent fatigue life, and will Described remanent fatigue life compares with structure projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T For mean temperature in seclected time section, T₀For transformer substation body location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i) ＜ σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by transformer substation body overload, be therefore dynamically change, and along with the change of overload use natural law be one nonlinear Process,T_AFatigue life, d is designed for initiating structure_zRepresent and become Power station body overall design uses natural law, d_gRepresent that transformer substation body overload uses natural law；When A is more than 0, it is determined that at structural life-time In safe condition, when A is less than or equal to 0, output alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of imitating substation body, and simulation process is:

A, utilize finite element software to carry out after the modeling of transformer substation body to import GIS platform, build transformer substation body tripe systems respectively The model of part, adjusts the locus of each transformer substation body component in GIS platform；

B, by different shape the symbols each dangerous position of analog information transformer substation body, strain sensor assemblies in GIS platform And displacement transducer；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.