CN1029897C - Power network carrier wave control and management system - Google Patents
Power network carrier wave control and management system Download PDFInfo
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- CN1029897C CN1029897C CN 92112735 CN92112735A CN1029897C CN 1029897 C CN1029897 C CN 1029897C CN 92112735 CN92112735 CN 92112735 CN 92112735 A CN92112735 A CN 92112735A CN 1029897 C CN1029897 C CN 1029897C
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Abstract
The present invention relates to power network carrier wave control and management system which comprises a control and communication network composed of a central control machine (7), relay station (8) and an intelligent user-side carrier wave voltameter (9), wherein carrier communication is carried out by transmission lines; the central control station comprises a carrier wave transceiver, a photoelectric coupler, a display circuit, a single-board computer, a microcomputer and a power supply; the relay station comprises a measuring circuit, a single-board computer, a corresponding carrier transceiver circuit, a corresponding photoelectricity coupling circuit and a corresponding display circuit; the intelligent user-side carrier wave voltameter comprises an A/D conversion circuit, an SCM, a program memory, a display circuit for displaying selected contents, and a power supply.
Description
The present invention relates to the to transmit electricity method and the device of supply and management especially relate to the method and apparatus that adopts computer that power delivery network is controlled and managed.More particularly, the present invention relates to a kind ofly adopt the digital computer control technology and by means of by on existing power transmission network, carrying out and possessing power grid control and the management system that communication intelligent terminal electric quality table carries out the carrier wave digital communication.
In power grid control and management system in the past, console for centralized control adopts the special-purpose circuit for the communication use for the state to users' at different levels power supply and electricity consumption manages.Clearly, it is huge and complicated that this mode makes the circuit of the required setting of whole power supply network.In recent years, people are successful at the communication and the management aspect that the carrier communication technology are applied to power supply network.Computer technology manages, tests and control the parameter of electrical network and also becomes ripe.Some intelligentized kilowatt-hour meters (as the GD-I type intelligent kilowatt-hour meter of Electronic Technology Inst., Guangxi Polytechnic College's development) occurred, it can measure, show, write down and control all kinds of parameters of user's power load thereupon.The material point that adopts carrier Control and management system that power network is managed and controls can be advised to receive and is the following aspects:
1. at the defeated power supply of electric power network; 2. use carrier wave on power network, to transmit binary digital signal; 3. the technology that uses a computer realizes control and management power transmission network; 4. be the autonomous system of whole electrical network being carried out system management and control.
The objective of the invention is to improve the control and the management of present electric power network, new network carrier control and management system are provided and provide new technological means for optimal control.Further purpose of the present invention also is to adopt new-type terminal intelligent formula voltameter, in conjunction with new carrier communication scheme, makes the control of whole electrical network and managerial skills that substantial progress be arranged.
The present invention includes the center control machine (7) that connects into the control net by transmission line as the carrier communication circuit, the relay station that links to each other with power transmission line (8) and the customer meter that links to each other with relay station (9), it is characterized in that, said center control machine (7) is one and sends out, receive the expansion microsystem of control signaling, it comprises carrier transmitting-receiving circuit (11), the photoelectricity coupling circuit, single board computer processor (14) and the microsystem (16) that is attached thereto, and display circuit (13) and ups power (15), the carrier transmitting-receiving circuit is connected with power transmission line and is connected the serial input interface of single board computer processor by the photoelectricity coupling circuit; Said relay station comprises measuring circuit (18), single board computer system (19) and corresponding carrier transmitting-receiving circuit, photoelectricity coupling circuit and display circuit and power supply, measuring circuit is connected with power transmission line and is connected with the interface of single board computer system by a photoelectrical coupler, and the carrier transmitting-receiving circuit is connected with power transmission line and is connected with the interface of single board computer system by another photoelectrical coupler; Said user's electricity instrument is an intelligent terminal formula carrier communication voltameter, it comprises, measuring circuit, photoelectrical coupler, the A/D change-over circuit, Single Chip Microcomputer (SCM) system (23), program storage (24) shows selected circuit (25), the carrier transmitting-receiving circuit, display circuit and dc supply (26), the receiving terminal of measuring circuit is connected with power transmission line, its output is by a photoelectrical coupler, the A/D change-over circuit is connected with the interface of Single Chip Microcomputer (SCM) system (23), the carrier transmitting-receiving circuit is connected with power transmission line, and is connected with the interface of Single Chip Microcomputer (SCM) system (23) by another photoelectrical coupler.
What Fig. 1 provided is existing electric power network power supply basic structure schematic diagram;
What Fig. 2 provided is the schematic diagram of electric power network carrier Control of the present invention and management system;
Fig. 3 is the schematic diagram according to center control machine structure of the present invention;
Fig. 4 is the structural representation according to relay station of the present invention;
Fig. 5 is the schematic diagram according to customer meter of the present invention.
In prior art scheme shown in Figure 1, (1) is transformer station, and (2) are electric substations, and (3) are customer substations, and (4) are user's power distribution cabinets, and (5) are the users.As can be seen from Figure 1, the most tangible characteristics are to experiencing some step voltage conversion the user power utilization device, by transmission of electricity branch road transmission of electric energy from original transmission line (as high-voltage line) in the electrical power trans mission/distribution system of existing prior art scheme.In other words, be not directly to give the user to use with the electric energy of transformer station output, but at each branch road, through progressively classification, deliver to the user along separate routes, promptly adopt transmission of electricity branch road grading control and management.Specifically, export from the electric energy on the high voltage transmission line through transformer station, be distributed to the branch road of respectively powering after the transformation, the power supply branch road to electric substation of subordinate, is distributed to electric energy again through each bar power supply branch road the customer substation of next stage with power delivery again after electric substation's transformation.Customer substation is delivered to electric energy through each bar power supply branch road each user's power distribution cabinet again.User's power distribution cabinet provides required electric power for each different particular user and electrical appliance through separately branch road again.
The grid power transmission scheme of this prior art by stagewise shown in Figure 1 has obvious defects in control and management.
At first, because therefore the user powers according to the electricity consumption rank, the number of branches of power supply network circuit increases.For each user is differentiated, just special-purpose supply lines must be set.Secondly, for adjusting the needs of supply load, number of users on the same branch road and load will be placed restrictions on to some extent, and new electrical network user can only the power supply of upright in addition transmission of electricity branch road.The increase of branch road certainly will make the power transmission facility investment increase.
In addition, the power supply grid system of this stagewise is difficult to realize the balance of loading.This is owing to supply load is to adjust by branch road.The whole piece branch road have to be cut off during the peak, and make whole user's all effecteds of this branch road.Branch road deficiency still appears cutting off in Shi Changhui, shows too much contradiction and cut off two roads.
Again it, the Monitoring and Controlling of this stagewise power transmission mode is not nimble.In such cases, power supply department can only be monitored total transmission of electricity situation of each branch road of being administered, and the electricity consumption situation of various users on the branch road can't be grasped in detail, more can't direct intervention, the concrete a certain user of control.Slow to the fault reaction speed that is taken place on the transmission line, because in confused situation to the branch road each point.
Again it, this stagewise power transmission mode can not carry out electrical network analysis (as load analysis, ground connection analysis, quality analysis etc.) effectively, apace, owing to can't directly gather, gather, analyze to user's data, thereby existing control system can only adopt step by step the pooled analysis method of inquiring about, reporting step by step, thereby reaction speed is slow, and efficient is low.
According to the top not enough aspect of mentioning each about existing stagewise power transmission network, the invention discloses a kind of new carrier Control that is used for electric power network and management system.This system directly is controlled to be the basis with center transformer station to each user, thereby make and adopt circuit to descend significantly, conveniently, promptly each user's electricity consumption situation is monitored and control, simultaneously all data analyses that directly obtain are handled, and whole power supply network is controlled and managed according to institute's phase scheme.
Below with reference to Fig. 2 the formation of the present invention and the course of work are described.In Fig. 2, (7) are center control machines, and (8) are relay stations, and (9) are customer meters.This three part has constituted electric power network carrier Control of the present invention and management system together with the power transmission line as carrier channel.Wherein, the center control machine of (7) is the computer system of the raising expansion of a special use, and the transformer station, power transformation that it can place each different stage is in one's power in the switchgear house, as the Region control and the administrative center of this rank network.Relay station (8) is connected on the transmission line, undertaking the task of managing a group customer meter nearby, and various electrical quantitys such as the working condition of these customer meters, power supply situation are fed to center control machine (7), also the downlink command of center control machine (7) is sent to the controlled users instrument of appointment simultaneously, thereby realizes the direct control of center control machine (7) the user power utilization state.Each relay station all has independently geocoding, to realize independent inquiry and the control of center control machine to each relay station.
One of key takeaway of the present invention is to be the custom-designed carrier intelligent voltameter of native system (9).It can be measured user's all kinds of electric parameters and show its reading of surveying, and the instruction of receiving center controller and produce control signal corresponding, and by command request institute's test data is sent to relay station (8) with carrier signal.In order to realize the independent direct control of center control machine to each user's intelligence instrument, carrier intelligent voltameter of the present invention all can possess independently geocoding, thereby realizes that desired center control machine (7) is through the carrier Control of relay station (8) to user's (terminal) intelligent power meter.The transmission lines of these carrier wave instructions and the transmission line that is electrical network are utilized existing electrical grid move instruction and data, thereby have been omitted the dedicated telephone line road of loaded down with trivial details high price.
Below by for example, further set forth the course of work of the present invention.When utilizing power transmission network as the carrier communication circuit, what its carrier communication adopted is the method for frequency modulation.Utilize two different frequencies to represent " 0 " and " 1 " of binary number.Can formulate a cover carrier frequency between relay station (8) and the user's intelligence instrument (9), adopt a cover carrier frequency between relay station (8) and the center control machine (7) in addition.Can use specific carrier frequency between the different center control machines and between each different relay station and the user's intelligence instrument had jurisdiction over.But generally can unify the formulation standard for standardization.
In the present invention, a frame data sign indicating number is made of 11 codes, in these 11 codes, includes 1 start bit, 9 bit data positions (wherein the 9th is address and data differentiation bits) and 1 position of rest.On the instruction load mode, adopt asynchronous serial communication.Carrier frequency is no more than 200KHz.The carrier wave output voltage is lower than the transmission line voltage 1% that is connected.The frequency of modulation signal is no more than 1/3rd of carrier frequency.User's intelligence instrument number that each relay station is administered is wanted suitably, and guaranteeing within a second, relay station is wanted can be to its whole intelligent subscriber instrument of administering inquiry scan one time at least.In the concrete division of frequency range, the present invention uses the communication that the carrier wave frequency range below the 50KHz is distributed between center control machine (7) and relay station (8), and the frequency range to 200KHz more than the 50KHz is used as the communication between relay station and the user's intelligent terminal instrument.
Because be to adopt the transmission line of existing power transmission line as carrier communication, Gu and, should arrange in advance is by the usefulness of which two line as the carrier wave transmission, for example adopts a phase line and zero line, or two phase lines.For the sake of security, whole transmission line should have good lightning arrester.
In Fig. 3, provided the structure chart of center control machine of the present invention.It is a microsystem of having expanded, comprising: carrier transmitting-receiving circuit (11), photoelectricity coupling circuit (12), display circuit (13), single board computer treatment system (14), ups power (15), microsystem (16).Carrier transmitting-receiving circuit (11) is used for carrier signal is carried out modulation and demodulation, sends and received.This transmission is connected with the serial input interface of reception process photoelectricity coupling circuit (12) and single board computer treatment system (14) and realizes.Display circuit (13) is used for display system operating state and important parameters value.Single board computer treatment system (14) manages for the data of the capital equipment of center control machine system and reception and data is carried out preliminary treatment, and pretreated data are sent to microsystem (16), so that there these data are further analyzed and calculated.Microsystem (16) is analyzed and is handled data, thereby obtain the data to the electrical network integrality, analyze the data that obtain according to these, microsystem (16) reaches exporting corresponding figure and form, and figure, form shown on display, send control command.Ups power (15) is used for providing uninterrupted power supply to whole system.
Figure 4 illustrates the structure chart of the relay station in the system of the present invention.Comprising measuring circuit (18) is arranged, single board computer system (19), lightning arrester (20) and at formation and function the carrier transmitting-receiving circuit (11) identical, photoelectricity coupling circuit (12) display circuit (13) and ups power (15) with the center control machine shown in Fig. 3.
Measuring circuit (18) is used for parameters such as the voltage of transmission line, electric current, electric degree number, power factor, cycle and power are measured.Behind the conversion range, behind photoelectrical coupler (12), send into single board computer system (19) by the measured data of measuring circuit (18).The effect of single board computer system (19) is customer meter is stored and gathered, store to the various data of measuring gained parameter among the figure.In addition; this single board computer system also will and carry out this order through the order of carrier transmitting-receiving circuit (11) and photoelectrical coupler (12) receiving center controller, and according to control logic customer meter is sent instruction, exports control signal and the electric equipment of being correlated with (such as circuit breaker, relay protector, warning device etc.) is sent control signal and operates accordingly.
As previously mentioned, constituted specially in order to realize whole design of the present invention and be used to realize carrier wave communication intelligent voltameter of the present invention.In Fig. 5, provided the block diagram that this intelligence instrument constitutes.At this, the applicant is only for this figure and get in touch system of the present invention and do a preliminary explanation, and the more detailed introduction that relates to this intelligence instrument sees also the patent application of submitting to simultaneously with the application that is entitled as " carrier intelligent voltameter ".
In Fig. 5, (22) are A/D conversion chip circuit, and (23) are Single Chip Microcomputer (SCM) system, and (24) are program storage (EPROM), and (25) are to show selected circuit, and (26) are dc supplies.The merit figure of number in the figure (11), (12), (13) and (18) has done introduction in Fig. 3 and Fig. 4.
In the drawings, the data parameter that measuring circuit records from electrical network is sent the parameter of being surveyed into A/D change-over circuit (22) through photoelectricity coupling circuit (12) and is converted digital parameter to, and these data are input to Single Chip Microcomputer (SCM) system (23).Single Chip Microcomputer (SCM) system (23) is calculated, is stored and convert thereof into decimal system number and delivers to display circuit (13) and show to data.Single Chip Microcomputer (SCM) system (23) is also being undertaken the task of communication and data interaction, and the carrier signal serial that is come by carrier transmitting-receiving circuit (11) and photoelectrical coupler (12) is input to Single Chip Microcomputer (SCM) system or outputs to transmission line as the usefulness of carrier communication from this Single Chip Microcomputer (SCM) system.Single Chip Microcomputer (SCM) system (23) is also handled command signal and the data-signal received, and according to the difference of the kind of the signal of being received, Single Chip Microcomputer (SCM) system is carried out different functions, and these functions comprise that execution command, data computation, output order refer to report to the police or the like.Single Chip Microcomputer (SCM) system (23) at first will be carried out the address and differentiate when acknowledge(ment) signal, if not execution is not then accepted in the address under this instrument.Memory (24) is the EPROM chip.Be used to store working procedure, data form, communication program and this address coding etc. of customer meter.Show that selected circuit (25) is made of monopulse generator.This circuit is connected to the outer interrupting input end of Single Chip Microcomputer (SCM) system (23).Whenever click the conversion button and send a pulse signal, single-chip microcomputer is then changed the type of a show value successively.Direct current (26) then provides required electric energy for whole instrument.
Comprehensive above-mentioned elaboration to each components of system as directed as can be seen, because electric power network carrier Control of the present invention and management system have adopted immediate data interactively control and the management of center control machine to the terminal intelligent voltameter that addressed, thereby realized the direct communication of control end to user terminal, compare with the management control mode of the stagewise power transmission network of prior art, the mode of this direct communication and control will be significantly rapidly, accurately and efficient.It can carry out network analysis to power supply network in time, for the economical operation of electrical network, accident detect and handle, improve power supply quality decision-making foundation efficiently is provided.Make the management and the distribution of electrical power of power supply more scientific.
Claims (4)
1, the carrier Control and the management system that are used for electric power network, it comprises the center control machine (7) that is connected into the control net by the transmission line as the carrier communication circuit, the relay station that links to each other with power transmission line (8) and the customer meter that links to each other with relay station (9), it is characterized in that, said center control machine (7) is one and sends out, receive the expansion microsystem of control signaling, it comprises carrier transmitting-receiving circuit (11), the photoelectricity coupling circuit, single board computer processor (14) and the microsystem (16) that is attached thereto, and display circuit (13) and ups power (15), the carrier transmitting-receiving circuit is connected with power transmission line and is connected the serial input interface of single board computer processor by the photoelectricity coupling circuit; Said relay station comprises measuring circuit (18), single board computer system (19) and corresponding carrier transmitting-receiving circuit, photoelectricity coupling circuit and display circuit and power supply, measuring circuit is connected with power transmission line and is connected with the interface of single board computer system by a photoelectrical coupler, and the carrier transmitting-receiving circuit is connected with power transmission line and is connected with the interface of single board computer system by another photoelectrical coupler; Said user's electricity instrument is an intelligent terminal formula carrier communication voltameter, it comprises, measuring circuit, photoelectrical coupler, the A/D change-over circuit, Single Chip Microcomputer (SCM) system (23), program storage (24) shows selected circuit (25), the carrier transmitting-receiving circuit, display circuit and dc supply (26), the receiving terminal of measuring circuit is connected with power transmission line, its output is by a photoelectrical coupler, the A/D change-over circuit is connected with the interface of Single Chip Microcomputer (SCM) system (23), the carrier transmitting-receiving circuit is connected with power transmission line, and is connected with the interface of Single Chip Microcomputer (SCM) system (23) by another photoelectrical coupler.
As said electric power network carrier Control of claim 1 and management system, it is characterized in that 2, said relay station (8) and user's voltameter (9) all are unified addressing.
As said electric power network carrier Control of claim 1 and management system, it is characterized in that 3, said communication data and the every frame of instruction are one 11 binary numbers.
As said electric power network carrier Control of claim 1 and management system, it is characterized in that 4, the frequency of said carrier wave is the following frequency of 200KHz.The carrier voltage amplitude of output is below 1% of transmission line magnitude of voltage that is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112735 CN1029897C (en) | 1992-11-10 | 1992-11-10 | Power network carrier wave control and management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112735 CN1029897C (en) | 1992-11-10 | 1992-11-10 | Power network carrier wave control and management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072539A CN1072539A (en) | 1993-05-26 |
| CN1029897C true CN1029897C (en) | 1995-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92112735 Expired - Fee Related CN1029897C (en) | 1992-11-10 | 1992-11-10 | Power network carrier wave control and management system |
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| Country | Link |
|---|---|
| CN (1) | CN1029897C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490382B (en) * | 2015-11-25 | 2018-04-20 | 国网辽宁省电力有限公司大连供电公司 | A kind of uplink signal processing method |
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1992
- 1992-11-10 CN CN 92112735 patent/CN1029897C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1072539A (en) | 1993-05-26 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |