CN109698551A - A kind of Intelligent load management system for transformer - Google Patents
A kind of Intelligent load management system for transformer Download PDFInfo
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- CN109698551A CN109698551A CN201710998928.7A CN201710998928A CN109698551A CN 109698551 A CN109698551 A CN 109698551A CN 201710998928 A CN201710998928 A CN 201710998928A CN 109698551 A CN109698551 A CN 109698551A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
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- H02J13/0075—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of Intelligent load management system for transformer, the Intelligent load management system for transformer is formed and is radially distributed by administrative center, communication channel, load management terminal three parts；It further comprise current transformer, intelligent management computer module, alarm module and signal transmitting module, the input terminal of intelligent management computer module is connected with converter transmission line, the other end of the converter transmission line is connected with A/D converter, and the current signal transmission line is connected to current transformer.The present invention passes through the design to intelligent management computer module, the load condition of transformer carries out data acquisition by current transformer, current transformer passes the signal to signal amplifier, signal amplifier passes the signal to time-sharing multiplex signal receiving module, intelligent management computer module carries out a point processing to received signal, the load condition of transformer can be effectively managed automatically, then when there is something special, timely notifies staff.
Description
Technical field
The invention belongs to intelligent management system more particularly to a kind of Intelligent load management system for transformer.
Background technique
Intelligent management system is the use device in transformer load monitoring, traditional transformer management system, Bu Nengtong
The multiple transformers of Shi Guanli are often taken the acquisition of transformer load signal and are manually monitored, and occur in transformer load
It varies widely or when something goes wrong, timely staff cannot be reminded to handle, therefore, it is necessary to a kind of transformer loads
Intelligent management system.
In conclusion existing intelligent management system does not meet the developing direction when Intelligent load management system for transformer, it is full
Intelligent load management system for transformer does not require corresponding require to foot.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of Intelligent load management system for transformer.
The invention is realized in this way a kind of Intelligent load management system for transformer, the transformer load intelligent management
System is formed and is radially distributed by administrative center, communication channel, load management terminal three parts；
Administrative center is the core of system, is the command centre of load management system operation and management, is counted by one
Calculation machine internal lan and corresponding main control software composition；
Communication channel is the communication line of system, for transmitting information between administrative center and load management terminal；?
The selection of communication link pattern in system, can regard concrete condition, to select wireless, microwave channel or carrier channel；
Load management terminal by acquired with data and the microprocessor system sum number of processing capacity pass channel system form,
Power information, power supply situation, information about power, the ammeter continuous data items electricity consumption data of acquisition user in real time, and number can be passed through
It passes channel and is sent to administrative center；
The Intelligent load management system for transformer further comprises: current transformer, time-sharing multiplex signal receiving module,
Intelligent management computer module, alarm module and signal transmitting module；
The input terminal of the intelligent management computer module is connected with converter transmission line, the converter transmission line it is another
One end is connected with A/D converter, and the input terminal of the A/D converter is connect with signal transmssion line to be converted, the letter to be converted
The other end of number transmission line is connect with time-sharing multiplex signal receiving module；
The time-sharing multiplex signal receiving module does about frequency slice wavelet transformation the time-frequency overlapped signal received
Time frequency analysis obtain the time frequency analysis image of time-frequency overlapped signal and carry out as follows:
Frequency slice wavelet transformation definition are as follows:
Wherein p (t) is the time domain table of signal；Vector σ is the scale factor of time frequency analysis and σ ≠ 0, σ are converted by establishing
0 He of corresponding relationship σ=ω/k of the factor and time frequency resolution, k >Come the σ determined；For frequency chip function
The Fourier transformation of h (t), referred to as frequency slice function；
According to pa Seville equation, if vector σ is not the function for estimating frequency v, above-mentioned FSWT expression formula be may be expressed as:
It usesTime frequency analysis processing is carried out to time-frequency overlapped signal as FSF, may be expressed as:
The time-sharing multiplex signal receiving module is connected to several and receives signal transmssion line, the reception signal transmssion line
The other end be all connected with signal amplifier；
The signal model of the signal amplifier time-frequency overlapping MASK indicates are as follows:
Wherein, N is the signal component number of time-frequency overlapped signal, and n (t) is additive white Gaussian noise, siIt (t) is time-frequency weight
The signal component of folded signal, is expressed asA in formulaiIndicate signal
The amplitude of component, ai(m) indicate that the symbol of signal component, p (t) indicate molding filter function, TiIndicate the code of signal component
First period, fciIndicate the carrier frequency of signal component,Indicate the phase of signal component；
The input terminal of the signal amplifier is connected with current signal transmission line, the other end of the current signal transmission line
It is connected to current transformer, the output end of the intelligent management computer module is connected to signal transmssion line and alarm signal transmission
Line, the signal transmssion line are connected to signal transmitting module, and the alarm signal transmission line is connected to alarm module；
The multicast association process of the signal transmitting module specifically includes:
Step 1, Hub are corresponding value according to the domain SSS, Asso_ctrl that needs to be arranged of present communications, make broadcast
Wakeup frame, and broadcast T-Poll frame, the first association request frame that the node of communication in need is sent until receiving；
Step 2, after some node i receives Wakeup frame, according to address choice private key SKAi, calculate public key and calculate public key
PKAi=SKAi× G calculates the public key based on password, PKAi'=PKAi-Q(PWi), Q (PWi)=(QX, QY)；QX=232×PWi+MX；
Select random number N once_ai, calculate DHKey=X (SKai×PKb)=X (SKai×SKb× G), Temp_1=RMB_128
(DHKey), node is according to the Wakeup frame information received and the Nonce_a of itself selectioniIt calculates:
KMAC_1A
=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2A
=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The first association request frame of joint structure is simultaneously sent；
Step 3 restores the public key of the i-th node: PK after Hub receives the first association request frame of the i-th node firstai=
PKai'+Q (PW), Q (PWi)=(QX, QY), QX=232×PWi+MX, QYFor positive even numbers；Calculate DHKey=X (SKb×PKai)=X
(SKai×SKb× G), Temp_1=RMB_128 (DHKey) is calculated according to the information received and the information being calculated:
KMAC_1B
=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2B
=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The KMAC_2A received and the KMAC_2B being calculated are compared, if the same continues to construct the second association request
Frame cancels this association request if different, and Hub calculates MK after sending the second association request framei=CMAC (Temp_2,
Nonce_ai| | Nonce_b, 128) be Hub and the i-th node master key；
Step 4, the i-th node receive the second association request frame, compare the KMAC_1A that calculates in step 2 and receive
KMAC_1B cancels this association request if different, if identical calculations MKiMKi=CMAC (Temp_2, Nonce_ai||
Nonce_b, 128) be the i-th node and Hub master key.
Further, the current transformer uses open type current transformer.The depressor load intelligent management system tool
Body implementation method are as follows:
Data acquisition, system survey load data, electric flux by user's on-site terminal, timing automatic collection or random call together
Data, meter reading data, floor data and power quality data generate day, monthly load curve, always added with function and reactive energy amount
Curve；
Load control system, system have the closed-loop control of power definite value, the closed-loop control of electric flux definite value and remote control mode；
Data processing, system have terminal affair reporting functions, and main website receives reported event, issue alarm signal, display
Corresponding event content；System has data calculating, function of statistic analysis, is able to carry out load, electric flux statistical analysis, voltage system
The Data Analysis Services such as meter analysis, Power Factor Analysis and frequency analysis；
Data transmission, main website and terminal are transmitted by < < power load management system data；
Bidirectional data exchange function is realized in load management system and marketing system interconnection, and " system is by collected user's electric energy
Amount information, load control system situation etc. are supplied to customer service system, in case user query；
The alarm event of event handling, main website receiving terminal is reported and is handled, while periodically inquiring the general of terminal
Event or critical event record, and can store and print related statements.
System administration, system provide classification Rights Management System provide to terminal management include terminal file typing,
The setting and inquiry of terminal configuration parameters, control parameter and threshold parameters；System provides the management to communication equipment, including channel
Management, parameter configuration and relaying station administration；System is able to carry out operation conditions monitoring, the operation to terminal, main website and relay station
State is shown, is statisticallyd analyze, and is automatically recorded to important operation.
Further, the shell of the current transformer is shaped using import polycarbonate injection moulded；Polycarbonate injection moulded forming
The nozzle temperature used is 280 DEG C；Barrel temperature: 285 DEG C of leading portion, 295 DEG C of middle section, 240 DEG C of back segment；Just booting in production
When, 80 DEG C first are heated to mold, rejection rate is lower, and when continuous production no longer needs to heat.
Further, the signal transmitting module and signal receiver matching transmission；The data transmission method of use are as follows: letter
Extended code is added in the data to be transmitted by number sending module, changes the switching frequency of Switching Power Supply according to the signal to pass through
First signal is sent to multiple signal receivers by the output line of the Switching Power Supply, and is changed on the output line
Output-voltage levels are to be sent to the signal receiver for second signal.
Compared with prior art, the beneficial effects of the present invention are: by the design to intelligent management computer module, electric current
Mutual inductor uses open type current transformer, easy for installation, without tearing a bus open, can also hot line job, by intelligent management meter
Calculation machine module controls the reception that time-sharing multiplex signal receiving module carries out signal, can manage multiple acquisition signals simultaneously, and intelligence is managed
Reason computer module is analyzed and processed received signal, compared with the data manually set carry out analysis, then will divide
Analysis result is transmitted to signal transmitting module by signal transmssion line, and signal transmitting module passes the signal to specific signal and receives
Device will pass through letter if intelligent management computer module finds that the deviation of analyzed data and setting value is more than setting value
Number sending module sends standby signal, while intelligent management computer module can also pass through alarm signal and transmit line traffic control and alarms mould
Block carries out warning note and carries out taking effective treatment measures, reduce the generation of accident so as to the discovery of staff earlier.
Power load management system realization provided by the invention completely integrate system to the monitoring of electric load and one of management.It
Load curve shape can effectively be improved, load curve is made to tend to be flat, reduce peak-valley difference, realize electric load in a timing
Empty optimal distribution, improves the rate of load condensate of user and power grid, thus improve hair, confession, electrical equipment utilization rate, reach power grid
Safety and economical operation, increase investment returns, and have very big benefit to power generation, power supply and electricity consumption and entire society.
Detailed description of the invention
Fig. 1 is Intelligent load management system for transformer structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 is Intelligent load management system for transformer functional block diagram provided in an embodiment of the present invention；
In figure: 1, current transformer；2, current signal transmission line；3, signal amplifier；4, signal transmssion line is received；5, divide
When multiplexing signal reception module；6, signal transmssion line to be converted；7, A/D converter；8, converter transmission line；9, intelligent management meter
Calculation machine module；10, signal transmssion line；11, alarm signal transmission line；12, signal transmitting module；13, alarm module.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Intelligent load management system for transformer provided by the invention is by administrative center, communication channel, load management terminal three
Part composition is radially distributed；
Administrative center is the core of system, is the command centre of load management system operation and management, is counted by one
Calculation machine internal lan and corresponding main control software composition；
Communication channel is the communication line of system, for transmitting information between administrative center and load management terminal；?
The selection of communication link pattern in system, can regard concrete condition, to select wireless, microwave channel or carrier channel；
Load management terminal by acquired with data and the microprocessor system sum number of processing capacity pass channel system form,
Power information, power supply situation, information about power, the ammeter continuous data items electricity consumption data of acquisition user in real time, and number can be passed through
It passes channel and is sent to administrative center.
The depressor load intelligent management system concrete methods of realizing are as follows:
Data acquisition, system survey load data, electric flux by user's on-site terminal, timing automatic collection or random call together
Data, meter reading data, floor data and power quality data generate day, monthly load curve, always added with function and reactive energy amount
Curve；
Load control system, system have the closed-loop control of power definite value, the closed-loop control of electric flux definite value and remote control mode；
Data processing, system have terminal affair reporting functions, and main website receives reported event, issue alarm signal, display
Corresponding event content；System has data calculating, function of statistic analysis, is able to carry out load, electric flux statistical analysis, voltage system
The Data Analysis Services such as meter analysis, Power Factor Analysis and frequency analysis；
Data transmission, main website and terminal are transmitted by < < power load management system data；
Bidirectional data exchange function is realized in load management system and marketing system interconnection, and " system is by collected user's electric energy
Amount information, load control system situation etc. are supplied to customer service system, in case user query；
The alarm event of event handling, main website receiving terminal is reported and is handled, while periodically inquiring the general of terminal
Event or critical event record, and can store and print related statements.
System administration, system provide classification Rights Management System provide to terminal management include terminal file typing,
The setting and inquiry of terminal configuration parameters, control parameter and threshold parameters；System provides the management to communication equipment, including channel
Management, parameter configuration and relaying station administration；System is able to carry out operation conditions monitoring, the operation to terminal, main website and relay station
State is shown, is statisticallyd analyze, and is automatically recorded to important operation.
Structure of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, Intelligent load management system for transformer provided in an embodiment of the present invention includes: current transformer 1, divides
When multiplexing signal reception module 5, intelligent management computer module 9, alarm module 10 and signal transmitting module 11.
The input terminal of intelligent management computer module 9 is connected with converter transmission line 8, the other end of converter transmission line 8
It is connected with A/D converter 7, the input terminal of A/D converter 7 is connect with signal transmssion line 6 to be converted, signal transmssion line 6 to be converted
The other end connect with time-sharing multiplex signal receiving module 5, time-sharing multiplex signal receiving module 5 be connected to several receive signal
Transmission line 4, the other end for receiving signal transmssion line 4 are all connected with signal amplifier 3, the input terminal and electric current of signal amplifier 3
Signal transmssion line 2 is connected, and the other end of current signal transmission line 2 is connected to current transformer 1, intelligent management computer module 9
Output end be connected to signal transmssion line 10 and alarm signal transmission line 11, signal transmssion line 10 is connected to signal transmitting module
12, alarm signal transmission line 11 is connected to alarm module 13.
Current transformer 1 uses open type current transformer.
The shell of current transformer 1 is shaped using import polycarbonate injection moulded.
Signal transmitting module 12 and signal receiver matching transmission.
The time-sharing multiplex signal receiving module does about frequency slice wavelet transformation the time-frequency overlapped signal received
Time frequency analysis obtain the time frequency analysis image of time-frequency overlapped signal and carry out as follows:
Frequency slice wavelet transformation definition are as follows:
Wherein p (t) is the time domain table of signal；Vector σ is the scale factor of time frequency analysis and σ ≠ 0, σ are converted by establishing
0 He of corresponding relationship σ=ω/k of the factor and time frequency resolution, k >Come the σ determined；For frequency chip function
The Fourier transformation of h (t), referred to as frequency slice function；
According to pa Seville equation, if vector σ is not the function for estimating frequency v, above-mentioned FSWT expression formula be may be expressed as:
It usesTime frequency analysis processing is carried out to time-frequency overlapped signal as FSF, may be expressed as:
The time-sharing multiplex signal receiving module is connected to several and receives signal transmssion line, the reception signal transmssion line
The other end be all connected with signal amplifier；
The signal model of the signal amplifier time-frequency overlapping MASK indicates are as follows:
Wherein, N is the signal component number of time-frequency overlapped signal, and n (t) is additive white Gaussian noise, siIt (t) is time-frequency weight
The signal component of folded signal, is expressed asA in formulaiIndicate signal
The amplitude of component, ai(m) indicate that the symbol of signal component, p (t) indicate molding filter function, TiIndicate the code of signal component
First period, fciIndicate the carrier frequency of signal component,Indicate the phase of signal component；
The multicast association process of the signal transmitting module specifically includes:
Step 1, Hub are corresponding value according to the domain SSS, Asso_ctrl that needs to be arranged of present communications, make broadcast
Wakeup frame, and broadcast T-Poll frame, the first association request frame that the node of communication in need is sent until receiving；
Step 2, after some node i receives Wakeup frame, according to address choice private key SKAi, calculate public key and calculate public key
PKAi=SKAi× G calculates the public key based on password, PKAi'=PKAi-Q(PWi), Q (PWi)=(QX, QY)；QX=232×PWi+MX；
Select random number N once_ai, calculate DHKey=X (SKai×PKb)=X (SKai×SKb× G), Temp_1=RMB_128
(DHKey), node is according to the Wakeup frame information received and the Nonce_a of itself selectioniIt calculates:
KMAC_1A
=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2A
=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The first association request frame of joint structure is simultaneously sent；
Step 3 restores the public key of the i-th node: PK after Hub receives the first association request frame of the i-th node firstai=
PKai'+Q (PW), Q (PWi)=(QX, QY), QX=232×PWi+MX, QYFor positive even numbers；Calculate DHKey=X (SKb×PKai)=X
(SKai×SKb× G), Temp_1=RMB_128 (DHKey) is calculated according to the information received and the information being calculated:
KMAC_1B
=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2B
=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The KMAC_2A received and the KMAC_2B being calculated are compared, if the same continues to construct the second association request
Frame cancels this association request if different, and Hub calculates MK after sending the second association request framei=CMAC (Temp_2,
Nonce_ai| | Nonce_b, 128) be Hub and the i-th node master key；
Step 4, the i-th node receive the second association request frame, compare the KMAC_1A that calculates in step 2 and receive
KMAC_1B cancels this association request if different, if identical calculations MKiMKi=CMAC (Temp_2, Nonce_ai||
Nonce_b, 128) be the i-th node and Hub master key.
The working principle of the invention:
In the use of the present invention, current transformer is using open type electricity by the design to intelligent management computer module
Current transformer, it is easy for installation, without tearing a bus open, can also hot line job, the load condition of transformer by current transformer into
Signal is transmitted to signal amplifier by current signal transmission line by the acquisition of row data, current transformer, and signal amplifier will be believed
Number amplification after by reception signal transmssion line be transmitted to time-sharing multiplex signal receiving module, controlled by intelligent management computer module
Time-sharing multiplex signal receiving module carries out the reception of signal, and time-sharing multiplex signal receiving module will by signal transmssion line to be converted
Signal is transmitted to A/D converter, converts digital signal for analog signal by A/D converter, will be believed by converter transmission line
Number it is transmitted to intelligent management computer module, intelligent management computer module is analyzed and processed received signal, and artificial
The data of setting carry out analysis comparison, and analyzed result is then transmitted to signal transmitting module, signal by signal transmssion line
Sending module passes the signal to specific signal receiving device, if intelligent management computer module find analyzed data and
The deviation of setting value is more than certain value, and standby signal, while intelligent management computer mould will be sent by signal transmitting module
Block also can transmit line traffic control alarm module by alarm signal and carry out warning note, so as to the discovery of staff early, carry out
Effective treatment measures are taken, the generation of accident is reduced.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of Intelligent load management system for transformer, which is characterized in that the Intelligent load management system for transformer is by managing
Center, communication channel, load management terminal three parts composition are radially distributed；
Administrative center is the core of system, is the command centre of load management system operation and management, by a computer
Internal lan and corresponding main control software composition；
Communication channel is the communication line of system, for transmitting information between administrative center and load management terminal；In system
The selection of middle communication link pattern, can regard concrete condition, to select wireless, microwave channel or carrier channel；
Load management terminal by acquired with data and the microprocessor system sum number of processing capacity pass channel system form, in real time
Power information, power supply situation, information about power, the ammeter continuous data items electricity consumption data of user are acquired, and can be passed by number logical
Road is sent to administrative center；
The Intelligent load management system for transformer further comprises:
The Intelligent load management system for transformer is provided with current transformer, time-sharing multiplex signal receiving module, intelligent management
Computer module, alarm module and signal transmitting module；
The input terminal of the intelligent management computer module is connected with converter transmission line, the other end of the converter transmission line
It is connected with A/D converter, the input terminal of the A/D converter is connect with signal transmssion line to be converted, and the signal to be converted passes
The other end of defeated line is connect with time-sharing multiplex signal receiving module；
The time-sharing multiplex signal receiving module to the time-frequency overlapped signal received do about frequency slice wavelet transformation when
The time frequency analysis image that frequency analysis obtains time-frequency overlapped signal carries out as follows:
Frequency slice wavelet transformation definition are as follows:
Wherein p (t) is the time domain table of signal；Vector σ be time frequency analysis scale factor and σ ≠ 0, σ by establishing transformation factor
With corresponding relationship σ=ω/k of time frequency resolution, 0 He of k >Come the σ determined；For frequency chip function h (t)
Fourier transformation, referred to as frequency slice function；
According to pa Seville equation, if vector σ is not the function for estimating frequency v, above-mentioned FSWT expression formula be may be expressed as:
It usesTime frequency analysis processing is carried out to time-frequency overlapped signal as FSF, may be expressed as:
The time-sharing multiplex signal receiving module is connected to several and receives signal transmssion line, described to receive the another of signal transmssion line
One end is all connected with signal amplifier；
The signal model of the signal amplifier time-frequency overlapping MASK indicates are as follows:
Wherein, N is the signal component number of time-frequency overlapped signal, and n (t) is additive white Gaussian noise, siIt (t) is time-frequency overlapping letter
Number signal component, be expressed asA in formulaiIndicate signal component
Amplitude, ai(m) indicate that the symbol of signal component, p (t) indicate molding filter function, TiIndicate the symbol week of signal component
Phase, fciIndicate the carrier frequency of signal component,Indicate the phase of signal component；
The input terminal of the signal amplifier is connected with current signal transmission line, the other end connection of the current signal transmission line
Current transformer, the output end of the intelligent management computer module be connected to signal transmssion line and alarm signal transmission line,
The signal transmssion line is connected to signal transmitting module, and the alarm signal transmission line is connected to alarm module；
The multicast association process of the signal transmitting module specifically includes:
Step 1, Hub are corresponding value according to the domain SSS, Asso_ctrl that needs to be arranged of present communications, make the Wakeup of broadcast
Frame, and broadcast T-Poll frame, the first association request frame that the node of communication in need is sent until receiving；
Step 2, after some node i receives Wakeup frame, according to address choice private key SKAi, calculate public key and calculate public key PKAi=
SKAi× G calculates the public key based on password, PKAi'=PKAi-Q(PWi), Q (PWi)=(QX, QY)；QX=232×PWi+MX；Selection
Random number N once_ai, calculate DHKey=X (SKai×PKb)=X (SKai×SKb× G), Temp_1=RMB_128 (DHKey),
Node is according to the Wakeup frame information received and the Nonce_a of itself selectioniIt calculates:
KMAC_1A=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2A=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The first association request frame of joint structure is simultaneously sent；
Step 3 restores the public key of the i-th node: PK after Hub receives the first association request frame of the i-th node firstai=PKai′+Q
(PW), Q (PWi)=(QX, QY), QX=232×PWi+MX, QYFor positive even numbers；Calculate DHKey=X (SKb×PKai)=X (SKai×
SKb× G), Temp_1=RMB_128 (DHKey) is calculated according to the information received and the information being calculated:
KMAC_1B=CMAC (Temp_1, Add_ai||Add_b||Nonce_ai| | Nonce_b | | SSS, 64)
KMAC_2B=CMAC (Temp_1, Add_b | | Add_ai||Nonce_b||Nonce_ai| | SSS, 64)
The KMAC_2A received and the KMAC_2B being calculated are compared, if the same continues to construct the second association request frame, such as
Fruit difference then cancels this association request, and Hub calculates MK after sending the second association request framei=CMAC (Temp_2, Nonce_ai|
| Nonce_b, 128) be Hub and the i-th node master key；
Step 4, the i-th node receive the second association request frame, compare the KMAC_1A calculated in step 2 and the KMAC_ received
1B cancels this association request if different, if identical calculations MKiMKi=CMAC (Temp_2, Nonce_ai||Nonce_
B, 128) be the i-th node and Hub master key.
2. Intelligent load management system for transformer as described in claim 1, which is characterized in that the current transformer is used and opened
Mouth formula current transformer becomes；The depressor load intelligent management system concrete methods of realizing are as follows:
Data acquisition, system survey load data, electric flux number by user's on-site terminal, timing automatic collection or random call together
According to, meter reading data, floor data and power quality data generate day, monthly load curve, it is always bent added with function and reactive energy amount
Line；
Load control system, system have the closed-loop control of power definite value, the closed-loop control of electric flux definite value and remote control mode；
Data processing, system have terminal affair reporting functions, and main website receives reported event, issue alarm signal, and display is corresponding
Event content；System has data calculating, function of statistic analysis, is able to carry out load, electric flux statistical analysis, voltage statistic point
The Data Analysis Services such as analysis, Power Factor Analysis and frequency analysis；
Data transmission, main website and terminal are by < < power load management system data transmission；
Load management system and marketing system interconnection realize that " system believes collected user's electric flux to bidirectional data exchange function
Breath, load control system situation etc. are supplied to customer service system, in case user query；
The alarm event of event handling, main website receiving terminal is reported and is handled, while the periodically the common event of inquiry terminal
Or critical event record, and can store and print related statements.
System administration, it includes the typing of terminal file, terminal that system, which provides classification Rights Management System and provides to the management of terminal,
The setting and inquiry of configuration parameter, control parameter and threshold parameters；System provides the management to communication equipment, including channel pipe
Reason, parameter configuration and relaying station administration；System is able to carry out operation conditions monitoring, to the operation shape of terminal, main website and relay station
State is shown, is statisticallyd analyze, and is automatically recorded to important operation.
3. Intelligent load management system for transformer as described in claim 1, which is characterized in that the shell of the current transformer
It is shaped using import polycarbonate injection moulded；The nozzle temperature that polycarbonate injection moulded forming uses is 280 DEG C；Barrel temperature: leading portion
285 DEG C, 295 DEG C of middle section, 240 DEG C of back segment；In production when just booting, 80 DEG C first are heated to mold, rejection rate is lower, continuously
It no longer needs to heat when production.
4. Intelligent load management system for transformer as described in claim 1, which is characterized in that the signal transmitting module and letter
Number receiving device matching transmission；The data transmission method of use are as follows: extended code is added to the data to be transmitted by signal transmitting module
On, according to the signal change the switching frequency of Switching Power Supply with by the output line of the Switching Power Supply by first signal
Multiple signal receivers are sent to, and it is described second signal to be sent to change the output-voltage levels on the output line
Signal receiver.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114113860A (en) * | 2021-11-30 | 2022-03-01 | 国网黑龙江省电力有限公司黑河供电公司 | Method for detecting fault of functional module of power load management terminal |
| CN115237179A (en) * | 2022-09-22 | 2022-10-25 | 之江实验室 | Intelligent temperature control management circuit based on machine learning |
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| US5572438A (en) * | 1995-01-05 | 1996-11-05 | Teco Energy Management Services | Engery management and building automation system |
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| CN115237179A (en) * | 2022-09-22 | 2022-10-25 | 之江实验室 | Intelligent temperature control management circuit based on machine learning |
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