CN204497849U - A kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot - Google Patents
A kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot Download PDFInfo
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
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Abstract
The utility model discloses and a kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot, belong to distribution feeder automation technical field.It comprises formula feeder automation unit and centralized feeder automation unit on the spot; Formula feeder automation unit is installed on user branch feeder line on the spot; When the telecommunication of centralized feeder automation unit inside is smooth and easy, under the state of feeder line fault, centralized feeder automation unit is used for, by Long-distance Control isolated fault; Can communicate between formula feeder automation unit with centralized feeder automation unit on the spot; When above-mentioned telecommunication fault, under the state of feeder line fault, centralized feeder automation unit notifies formula feeder automation unit on the spot, and now, formula feeder automation unit is used on the spot, isolated fault.No matter whether this measure and control device communicate unimpeded, all can, when distribution network fault, realize fault location, isolate and restore electricity, and cost be controlled.
Description
Technical Field
The utility model relates to a distribution network feeder automation technical field especially relates to a compromise centralized, on-the-spot formula feeder automation's measurement and control device.
Background
In the distribution network of our country, overhead lines account for a considerable proportion. When a user branch of an overhead distribution line, namely a T connection, namely a power supply department and a responsibility division point of the user have a fault, if the fault is not positioned timely, the accident is often expanded, and further the outgoing line protection action of a transformer substation is caused, so that the whole distribution trunk line is powered off, and the accident is affected. According to statistics at present, the sum of the spread accidents accounts for about 30% of the total number of the accidents of the power distribution network in China, and in some areas, the sum of the spread accidents is even up to 70%.
With the continuous improvement of the requirements of power users on power supply reliability and power quality, the power supply department attaches more and more importance to the automation of the feeder of the power distribution network. Feeder automation refers to the automation of a feeder circuit between a transformer substation outgoing line and user electric equipment, and the content of the feeder circuit can be summarized into two main aspects: firstly, user detection, data measurement and operation optimization under normal conditions; and secondly, automatic positioning, fault isolation and power supply recovery control of the fault are carried out in the fault state.
In the prior art, in order to realize automatic positioning, fault isolation and power restoration of a fault in a fault state and avoid or reduce the influence of a power distribution network fault on power users, the applied power distribution network feeder automation technical scheme includes a simple scheme, namely a fault indicator scheme, an on-site feeder automation scheme, a centralized feeder automation scheme and a distributed intelligent control scheme.
Wherein,
the simple solution, i.e. the fault indicator solution, is low cost.
According to the on-site feeder automation scheme, the transformer substation outlet circuit breaker or recloser is matched with an automatic sectionalizer on a line according to the change of voltage and current of a detection line, and multiple switching-off and switching-on operations are carried out according to a set logic sequence, so that fault isolation and power restoration are completed. The scheme does not need communication support and does not depend on a master station system. For example, chinese utility model patent with grant publication No. CN 202084917U discloses an on-the-spot feeder automation device, which includes a feeder automation unit FTU installed on the feeder circuit, the input of feeder automation unit FTU communicates with the feeder monitoring system DTU through the control communication channel, the input of feeder circuit breaker unit FTU communicates with the adjacent feeder automation unit FTU through the protection communication channel, and the output of feeder circuit breaker unit FTU is connected with the circuit breaker. Through signal exchange, the fault range can be judged, only the circuit breakers on two sides of the fault section are cut off, the fault can be selectively cut off, and the power failure of a circuit in the non-fault section is avoided; within 10-20 ms of fault occurrence, information exchange in the fault power direction is completed, each feeder automation unit FTU works independently, fault analysis is timely, fault removal action is rapid, and action time is less than 25 ms.
The centralized feeder automation scheme is characterized in that a control main station or a sub-station collects fault detection information of each power distribution terminal in a centralized manner through a communication system, wherein the fault detection information comprises a remote terminal control system (RTU), a Feeder Terminal Unit (FTU), a power distribution transformer detection terminal (TTU) and the like, and fault isolation and power restoration are realized according to a system topological structure and a preset algorithm.
The intelligent distributed feeder automation scheme is based on the intelligent distributed feeder automation of point-to-point communication, and can quickly perform fault isolation. For example, the chinese utility model patent with the publication number CN 202872465U discloses an intelligent distributed feeder automation control system, which includes a plurality of distribution terminals and a plurality of feeder automation control terminals, each feeder automation control terminal corresponds to a plurality of distribution terminals; each distribution terminal corresponds to each switch on the feeder; the feeder automation control terminal is provided with two Ethernet interfaces and a plurality of serial communication interfaces; the serial communication interface of each power distribution terminal is respectively connected to the serial communication interface of the corresponding feeder automation control terminal; the Ethernet interfaces of the power distribution terminals are respectively connected with the first Ethernet interfaces of the corresponding feeder automation control terminals, and the second Ethernet interfaces of the feeder automation control terminals are connected into the same Ethernet. The feeder automation system can overcome the defect that the existing feeder automation system is not easy to maintain and is easier to maintain.
In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art:
the simple scheme, namely the fault indicator scheme, can only carry out fault positioning, can not effectively isolate faults and can not recover power supply.
The in-situ feeder automation scheme needs to be repeatedly superposed on a fault to cause multiple impacts on the system, so that the in-situ feeder automation scheme is only applied to suburbs and rural overhead distribution lines with low requirements on power supply quality and poor communication conditions under normal conditions. In general, it is difficult to apply the method to areas with high power supply quality requirements, such as high-tech enterprise-intensive cell users.
The centralized feeder automation scheme needs remote communication support, needs to establish a master station system, has high investment cost, is usually only applied to areas with high requirements on power supply quality, and is not practical if applied to suburbs and rural overhead distribution lines with poor traffic conditions. Once the main station is broken down or the remote communication line fails, the feeder automation cannot be automatically realized, and only manual fault isolation and power restoration can be performed manually.
The intelligent distributed feeder automation scheme needs an optical fiber communication network, and once a communication fault occurs, the feeder automation cannot be realized; in addition, the intelligent distributed feeder automation scheme needs to acquire information of downstream node devices, and when the network topology is complex and the upstream and downstream adjacent nodes have multiple devices, the logic processing is very complex.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a compromise centralized, automatic measurement and control device of formula feeder on the spot, main aim at provides one kind no matter whether the inside remote communication of centralized feeder automation unit is unblocked, all can realize fault location, isolation and resume the power supply under the condition of distribution network trouble to the cost is controllable, thereby is suitable for the practicality more.
In order to achieve the above object, the present invention mainly provides the following technical solutions:
the embodiment of the utility model provides a compromise centralized, on-the-spot formula feeder automation's measurement and control device includes: an in-situ feeder automation unit and a centralized feeder automation unit; the local feeder automation unit is arranged on the user branch feeder circuit;
when the remote communication in the centralized feeder automation unit is smooth, the centralized feeder automation unit is used for isolating faults through remote control under the state of feeder circuit faults;
the local feeder automation unit and the centralized feeder automation unit are capable of communicating with each other;
when telecommunication inside the centralized feeder automation unit fails, the centralized feeder automation unit notifies the in-situ feeder automation unit in a feeder line failure state, and at this time, the in-situ feeder automation unit is used for isolating the failure.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
Preferably, the in-place feeder automation unit includes a circuit breaker or a load switch installed on the feeder line, the circuit breaker or the load switch performing a switching-off operation when a fault needs to be isolated, the circuit breaker or the load switch being capable of communicating with the centralized feeder automation unit.
Preferably, the centralized feeder automation unit comprises a measurement and control unit and a remote control terminal,
the measurement and control unit is used for sending a real-time operation condition signal of the feed line to the remote control terminal; the measurement and control unit is also used for isolating the feeder line fault in the state of the feeder line fault;
the measurement and control unit is also used for communicating with the on-site feeder automation unit;
the remote control terminal is used for receiving the signals collected by the measurement and control unit; and under the state of the failure of the feeder line, the remote control terminal sends a control command to the measurement and control unit through remote communication to isolate the failure.
Preferably, the centralized feeder automation unit comprises a measurement and control unit and a remote control terminal,
the measurement and control unit is used for sending a real-time operation condition signal of the feed line to the remote control terminal; the measurement and control unit is also used for isolating the feeder line fault in the state of the feeder line fault;
the measurement and control unit is also used for communicating with the circuit breaker or the load switch;
the remote control terminal is used for receiving the signals collected by the measurement and control unit; and under the state of the failure of the feeder line, the remote control terminal sends a control command to the measurement and control unit through remote communication to isolate the failure.
Preferably, the measurement and control device considering centralized and in-situ feeder automation further comprises a signal acquisition device, the signal acquisition device is integrated on the circuit breaker or the load switch, and the signal acquisition device is used for acquiring the real-time operation working condition of the feeder circuit and sending the real-time operation working condition signal of the feeder circuit to the measurement and control unit.
Preferably, the communication between the local feeder automation unit and the centralized feeder automation unit is wired communication or wireless communication.
Preferably, the remote control terminal is implemented based on a DEP-900 series feeder terminal device or an east electronic DF9311 series feeder terminal device.
Preferably, in the case where the fault generated on the power feeding line is a transient fault, the circuit breaker or the load switch can also perform a closing operation again when the transient fault is removed.
Preferably, the measurement and control unit sends a real-time operation condition signal of the feeder line to the remote control terminal, the remote control terminal feeds back a calculation result in real time after calculating according to a protection logic arranged in the remote control terminal, and when the remote control terminal or the measurement and control unit has no response, response messy codes or response delay, the centralized feeder automation unit reports a remote communication obstacle in the centralized feeder automation unit to the in-situ feeder automation unit.
Preferably, the measurement and control unit and the remote control terminal carry self-checking systems respectively, and when the measurement and control unit or the self-checking system carried by the remote control terminal reports an obstacle, the centralized feeder automation unit also reports a remote communication obstacle inside the centralized feeder automation unit to the on-site feeder automation unit.
The embodiment of the utility model provides a compromise centralized, on-the-spot formula feeder automation's measurement and control device includes on-the-spot formula feeder automation unit and centralized feeder automation unit, when the inside remote communication of centralized feeder automation unit is smooth and easy, can use centralized feeder automation unit to keep apart the trouble, when the inside remote communication trouble of centralized feeder automation unit, can use on-the-spot formula feeder automation unit to keep apart the trouble, therefore, no matter whether the inside communication of centralized feeder automation unit is unblocked, all can be under the condition of distribution network trouble, realize fault location, keep apart and resume the power supply. In addition, because the local feeder automation unit and the centralized feeder automation unit are applied only on the basis of the existing local feeder automation unit and the centralized feeder automation unit, the close-range communication module is additionally arranged between the local feeder automation unit and the centralized feeder automation unit, so that the close-range communication between the local feeder automation unit and the centralized feeder automation unit can be realized, and the cost is controllable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of a measurement and control device that combines centralized and in-situ feeder automation according to an embodiment of the present invention;
fig. 2 is a schematic view of a measurement and control device that combines centralized feeder automation in a local manner according to a second embodiment of the present invention;
fig. 3 is the embodiment of the utility model provides an arbitrary each functional module's of measurement and control unit who takes into account application among centralized, the automatic measurement and control device of on-the-spot feeder signal flow direction schematic diagram that provides in four.
Detailed Description
The utility model discloses a solve the problem that exists among the prior art feeder automation scheme, provide a take into account centralized, the automatic measurement and control device of formula feeder on the spot to no matter whether the inside communication of centralized feeder automation unit is unblocked, the homoenergetic is under the condition of distribution network trouble, realizes fault location, isolation and recovery power supply, and the cost is controllable.
The utility model discloses technical scheme for solving above-mentioned technical problem, the general thinking is as follows:
the embodiment of the utility model provides a compromise centralized, on-the-spot formula feeder automation's measurement and control device includes: an in-situ feeder automation unit and a centralized feeder automation unit;
the local feeder automation unit is arranged on the user branch feeder circuit;
when the remote communication in the centralized feeder automation unit is smooth, the centralized feeder automation unit is used for isolating faults through remote control under the state of feeder circuit faults; the local feeder automation unit and the centralized feeder automation unit can communicate with each other;
when telecommunication inside the centralized feeder automation unit fails, the centralized feeder automation unit notifies the in-place feeder automation unit in a feeder line failure state, and at this time, the in-place feeder automation unit is used to isolate the failure.
The embodiment of the utility model provides a compromise centralized, on-the-spot formula feeder automation's measurement and control device includes on-the-spot formula feeder automation unit and centralized feeder automation unit, when the inside remote communication of centralized feeder automation unit is smooth and easy, can use centralized feeder automation unit to keep apart the trouble, when the inside remote communication trouble of centralized feeder automation unit, can use on-the-spot formula feeder automation unit to keep apart the trouble, therefore, no matter whether the inside communication of centralized feeder automation unit is unblocked, all can be under the condition of distribution network trouble, realize fault location, keep apart and resume the power supply. In addition, because the local feeder automation unit and the centralized feeder automation unit are applied only on the basis of the existing local feeder automation unit and the centralized feeder automation unit, the close-range communication module is additionally arranged between the local feeder automation unit and the centralized feeder automation unit, so that the close-range communication between the local feeder automation unit and the centralized feeder automation unit can be realized, and the cost is controllable.
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be given, in conjunction with the accompanying drawings and preferred embodiments, to the specific embodiments, structures, features and effects of the measurement and control device according to the present invention, which combines the centralized and in-situ feeder automation. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Example one
Referring to fig. 1, a measurement and control device for centralized and on-site feeder automation provided by an embodiment of the present invention is implemented based on the structure shown in fig. 1, wherein a plurality of section switches 3a, 3b and 3c … are arranged on a main line 4 of the substation 1 after passing through the outlet breaker 2, wherein, a user branch feeder circuit 5 is led out from between the section switches 3a and 3b on the main line 4, the local feeder automation unit 6 is arranged on the user branch feeder circuit 5, an arrow 7 pointing to the local feeder automation unit 6 from the measurement and control unit 9 indicates that a signal is sent from the measurement and control unit 9 to the local feeder automation unit 6, that is, the communication between the on-site feeder automation unit 6 and the measurement and control unit 9 is unidirectional, and a component indicated by reference numeral 10 is used for a communication line between the measurement and control unit 9 and a remote control terminal.
In this embodiment, the local feeder automation unit 6 includes a breaker, the breaker is installed on the feeder line 5, and when a fault needs to be isolated, the breaker performs a switching-off operation, and the breaker can communicate with the centralized feeder automation unit.
In this embodiment, the centralized feeder automation unit includes a measurement and control unit 9 and a remote control terminal, where the measurement and control unit 9 is configured to send real-time operating condition signals (in this embodiment, the real-time operating condition signals include electric quantities such as voltage, current, frequency, and phase angle) of the feeder line to the remote control terminal (in this embodiment, the internal logic of the remote control terminal performs protection logic calculations such as overcurrent, zero-sequence overcurrent, inverse time-limited overcurrent, and the like); in the state of feeder circuit fault, the measurement and control unit 9 is also used for isolating the feeder circuit fault; the measurement and control unit 9 is also used for communicating with the on-site feeder automation unit; the remote control terminal is used for receiving signals from the measurement and control unit 9; and under the state of the fault of the feeder line, the remote control terminal isolates the fault through remote control.
In this embodiment, the measurement and control unit 9 is used for communicating with the circuit breaker. Under the condition, the embodiment of the utility model provides a compromise centralized, on-the-spot formula feeder automation's measurement and control device can automatic excision district interior single-phase earth fault to and alternate trouble.
In this embodiment, the circuit breaker is selected from the group consisting of FZW28-12/630-20 watchdog demarcation circuit breakers. The functions mainly comprise:
1) automatically removing the single-phase earth fault: when the branch line of the user has single-phase earth fault, the boundary switch automatically opens, the fault branch line is thrown away, and the safe operation of other branch users on the transformer substation and the feeder line is ensured.
2) Automatically disconnecting interphase short circuit fault: when the user branch line has an interphase short circuit fault, the demarcation circuit breaker immediately opens and throws away the fault line. The faulty line is isolated, so that other branch users on the feeder can quickly recover power supply.
3) And (3) rapidly positioning a fault point: after the user branch line fault causes the action of the demarcation switch, the user is only responsible for power failure, and the fault information can be actively reported, so that an electric power company can quickly determine the accident point and timely carry out field treatment, and the power supply of a fault line is recovered as early as possible.
4) Monitoring the user load: the demarcation circuit breaker can transmit the detection data to the power management center, realizes the real time monitoring to the load of remote place.
FZW28-12/630-20 watchdog boundary circuit breaker failure handling mode is shown in the following table
In this embodiment, the remote control terminal is implemented based on a DEP-900 series feeder terminal unit FTU or an eastern electronic DF9311 series feeder terminal unit. Wherein, the capacity of DEP-900 series FTU is 8 paths of telemetering (YC) quantity, 16 paths of remote signaling (YX) quantity, 2 paths of remote signaling (YK) quantity and 4 paths of RS-232/485 interfaces. The main functions are as follows: the system comprises a data acquisition unit, a feeder line monitoring unit, a fault detection unit, a switch on-off control unit, a fault automatic isolation unit, a fault line power supply self-recovery unit, an automatic load transfer unit, a load storage unit, a load reporting unit, a remote operation instruction receiving unit, a data and information transmission unit, a communication interface, a sampling interface and an output interface which are suitable for the indoor and outdoor environment requirements. The DEP-900 series FTU also has the function of fault current state differential protection. The differential protection circuit breaker is based on the fault current state differential principle and can be used as a feeder line protection of each circuit breaker. The feeder line breaker is not provided with backup protection, when the main protection fails, the outgoing switch of the transformer substation jumps, and then is judged by the power distribution network management software to isolate faults in a remote control mode. The power distribution network in the area adopts a ring network structure, and a power supply is taken from different buses on the 10kV side of a 110kV transformer substation and operates in a closed loop mode. When a system has faults, the faults can be removed instantly, and uninterrupted power supply in a fault-free area is ensured, so that higher requirements are provided for electrical equipment and a protection mode of a power distribution network, and only DEP-900 series FTUs with strong performance can be selected.
Referring to fig. 3, in this embodiment, the measurement and control unit 9 is composed of a CPU board, a power board, a human-computer interaction board, a communication module, a power management module, and a storage battery, and is disposed in the stainless steel box type cabinet. The cabinet body is usually installed in switch body below, through aviation cable connector, connects switch body, PT, CT etc. to obtain working power supply, electric quantity such as voltage, electric current, and status information such as switch position, energy storage state. When the device operates, the device collects 2 paths of voltage (Uab, Ucb), 4 paths of current (Ia, Ib, Ic and I0), switch positions, energy storage states and the like in real time, and realizes functions of overcurrent one section, overcurrent two sections, overcurrent three sections, zero sequence overcurrent, overvoltage protection, reclosing, post acceleration and the like, so that a local feeder line protection function is formed. When a fault occurs, the measurement and control unit 9 can identify the fault in the area (the fault outside the area does not respond), and isolate the fault, so that the fault cannot be spread to the main line 4, and the normal power supply of the main line 4 cannot be influenced; if the instantaneous fault occurs, the power supply can be recovered through the reclosing function, so that the on-site feeder automation function is realized. The function does not need the support of a network, a main station or a sub-station system, has low cost, is simple and reliable, and is particularly suitable for the operation monitoring of T-connection users. The measurement and control unit 9 has a measurement and control function, the current and voltage telemetering measurement precision can reach 5 per thousand, and the active power, reactive power and power factor telemetering measurement precision can reach 1 percent; 2-13 harmonic waves of line current can be detected; the 4-way switching value can be monitored and the remote signaling can be carried out. The automatic maintenance of the storage battery and the seamless switching of the main power supply and the standby power supply can be realized, and the normal work of the device is not less than 12 hours after the main power supply is powered off. Regarding the centralized feeder automation unit, the measurement and control unit 9 is connected to the distribution automation main station or sub-station system through communication modules such as GPRS and ethernet, transmits the electrical quantities (voltage, current, frequency, active, reactive, and power factors) and state quantities (switching on/off position and energy storage state) to the main station or sub-station system through a standard IEC101 protocol or IEC104 protocol, receives control commands (switching on/off command, reset command, setting fixed value, etc.) from the main station or sub-station system, and performs remote control operation on the feeder switch, thereby implementing real-time monitoring, fault identification, fault isolation, network reconfiguration, etc. of the distribution network. The function needs the cooperation of a main station or sub-station system and a network, although the overall cost is slightly high, the main station or sub-station system can monitor the running condition of important users in real time, can adjust the fixed value to adjust the running mode of the device, and is more beneficial to ensuring the fault isolation, power restoration, reliable power utilization and the overall running of a power grid of the important users.
The embodiment of the utility model provides a take into account centralized, under the automatic measurement and control device's of formula feeder on the spot condition that provides, measurement and control unit 9 needs gather real-time operation operating mode signal, carry out data control and realize the communication through distribution transformer monitor terminal (TTU).
The measurement and control unit 9 sends a real-time operation condition signal of the feeder line to the remote control terminal, the remote control terminal feeds back a calculation result in real time after calculating according to a protection logic arranged in the remote control terminal, when the remote control terminal is used for a communication line 10 obstacle between the measurement and control unit 9 and the remote control terminal, the presented result is that the remote control terminal or the measurement and control unit 9 has no response, has a response messy code or has a response delay, and the centralized feeder automation unit reports the remote communication obstacle in the centralized feeder automation unit to the local feeder automation unit. In this embodiment, the measurement and control unit 9 reports the remote communication obstacles inside the centralized feeder automation unit to the circuit breaker, so as to start the on-site feeder automation unit, the single-phase ground fault in the isolation region, and the inter-phase fault.
In addition, as the remote communication obstacle inside the centralized feeder automation unit is caused by the communication line 10 used between the measurement and control unit 9 and the remote control terminal, and may also be caused by the failure of the measurement and control unit 9 itself or the remote control terminal itself, the measurement and control unit 9 and the remote control terminal themselves respectively carry self-checking systems, and when the self-checking system carried by the measurement and control unit 9 or the remote control terminal itself reports an obstacle, the centralized feeder automation unit also reports the remote communication obstacle inside the centralized feeder automation unit to the local feeder automation unit. In this embodiment, the measurement and control unit 9 reports the remote communication obstacles inside the centralized feeder automation unit to the circuit breaker, so as to start the on-site feeder automation unit, the single-phase ground fault in the isolation region, and the inter-phase fault.
Example two
With the embodiment of the utility model provides a compromise centralized, on the spot formula feeder automation's measuring and control device's difference lies in, the embodiment two provides compromise centralized, on the spot formula feeder automation's measuring and control device, on the spot formula feeder automation unit 6 chooses for use load switch to replace, single-phase earth fault in it can the excision district to keep apart alternate trouble through the 2 cooperations of transformer substation's export circuit breaker.
EXAMPLE III
Refer to fig. 2, the utility model provides a take into account centralized, the automatic measurement and control device of formula feeder on the spot that embodiment one or embodiment two provided improves on the basis, the utility model provides a take into account centralized, the automatic measurement and control device of formula feeder on the spot that embodiment three provided still includes signal acquisition device (not shown in fig. 2), and signal acquisition device is integrated on circuit breaker or load switch, and signal acquisition device is used for gathering feeder circuit's real-time operation operating mode to give the measurement and control unit with feeder circuit real-time operation operating mode signal. At this time, the communication between the on-site feeder automation unit 6 and the measurement and control unit 9 is bidirectional, an arrow 7 directed from the measurement and control unit 9 to the on-site feeder automation unit 6 indicates that a signal is transmitted from the measurement and control unit 9 to the on-site feeder automation unit 6, and an arrow 8 directed from the on-site feeder automation unit 6 to the measurement and control unit 9 indicates that a signal is transmitted from the on-site feeder automation unit 6 to the measurement and control unit 9. In this case, the acquisition module is directly integrated into the local feeder automation unit 6, and the local feeder automation unit 6 is given a communication function, so that the local feeder automation unit 6 itself can have a more powerful function.
Wherein the communication between the local feeder automation unit 6 and the centralized feeder automation unit is wired communication or wireless communication. For the present embodiment, the communication between the circuit breaker or the load switch and the measurement and control unit 9 is wired communication or wireless communication, wherein the wired communication may be communication through a communication data line with a double-ended USB interface or communication through an ethernet network; the wireless communication may be implemented based on bluetooth technology or via Wi-Fi technology. Wherein, the communication data line with double-end USB interface, the signal transmission distance of Bluetooth technology or Wi-Fi technology is shorter, and if the communication is through the Ethernet, not only can realize the short-range communication, but also can realize the long-range communication.
Example four
The embodiment of the utility model provides an arbitrary centralized, the automatic measurement and control device of formula feeder on the spot that compromise that provides in one ~ the third embodiment improves on the basis, the embodiment of the utility model provides an among the four measurement and control device of giving consideration to centralized, the automatic formula feeder on the spot, the trouble that produces on the feed line is under the condition of instantaneous trouble, when instantaneous trouble elimination, circuit breaker or load switch can also carry out the combined floodgate operation once more. Therefore, the embodiment of the utility model provides a take into account centralized, on-the-spot formula feeder automation's measurement and control device can realize the automatic function of getting rid of to instantaneous trouble that four provide.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. A measurement and control device giving consideration to centralized and on-site feeder automation is characterized by comprising an on-site feeder automation unit and a centralized feeder automation unit; the local feeder automation unit is arranged on the user branch feeder circuit;
when the remote communication in the centralized feeder automation unit is smooth, the centralized feeder automation unit is used for isolating faults through remote control under the state of feeder circuit faults;
the local feeder automation unit and the centralized feeder automation unit are capable of communicating with each other;
when telecommunication inside the centralized feeder automation unit fails, the centralized feeder automation unit notifies the local feeder automation unit in a feeder line failure state, and at this time, the local feeder automation unit is used for isolating the failure.
2. The measurement and control device for centralized and in-situ feeder automation as claimed in claim 1, wherein the in-situ feeder automation unit comprises a circuit breaker or a load switch, the circuit breaker or the load switch is installed on a feeder circuit, when fault isolation is required, the circuit breaker or the load switch performs a switching-off operation, and the circuit breaker or the load switch can communicate with the centralized feeder automation unit.
3. The measurement and control device compatible with centralized and in-situ feeder automation as claimed in claim 1, wherein the centralized feeder automation unit comprises a measurement and control unit and a remote control terminal,
the measurement and control unit is used for sending a real-time operation condition signal of the feed line to the remote control terminal; the measurement and control unit is also used for isolating the feeder line fault in the state of the feeder line fault;
the measurement and control unit is also used for communicating with the on-site feeder automation unit;
the remote control terminal is used for receiving the signals collected by the measurement and control unit; and under the state of the failure of the feeder line, the remote control terminal sends a control command to the measurement and control unit through remote communication to isolate the failure.
4. The measurement and control device compatible with centralized and in-situ feeder automation as claimed in claim 2, wherein the centralized feeder automation unit comprises a measurement and control unit and a remote control terminal,
the measurement and control unit is used for sending a real-time operation condition signal of the feed line to the remote control terminal; the measurement and control unit is also used for isolating the feeder line fault in the state of the feeder line fault;
the measurement and control unit is also used for communicating with the circuit breaker or the load switch;
the remote control terminal is used for receiving the signals collected by the measurement and control unit; and under the state of the failure of the feeder line, the remote control terminal sends a control command to the measurement and control unit through remote communication to isolate the failure.
5. The measurement and control device considering centralized and in-place feeder automation as claimed in claim 4, further comprising a signal acquisition device integrated on the circuit breaker or the load switch, wherein the signal acquisition device is configured to acquire real-time operating conditions of the feeder line and send signals of the real-time operating conditions of the feeder line to the measurement and control unit.
6. The centralized, in-place, feeder automation enabled measurement and control device of claim 1 or 5, wherein the communication between the in-place feeder automation unit and the centralized feeder automation unit is wired communication or wireless communication.
7. The measurement and control device for centralized and in-situ feeder automation as recited in any one of claims 3 to 5, wherein the remote control terminal is implemented based on a DEP-900 series feeder terminal device or an east electronic DF9311 series feeder terminal device.
8. The measurement and control device compatible with centralized, in-situ feeder automation according to claim 2 or 5, characterized in that in case the fault generated on the feeder line is a transient fault, when said transient fault is eliminated, said circuit breaker or load switch can also perform the closing operation again.
9. The measurement and control device according to any one of claims 3 to 5, wherein the measurement and control unit sends a real-time operating condition signal of a feeder line to the remote control terminal, the remote control terminal feeds back a calculation result in real time after calculating according to a protection logic arranged in the remote control terminal, and when the remote control terminal or the measurement and control unit has no response, response messy codes or response delay, the centralized feeder automation unit reports a remote communication obstacle inside the centralized feeder automation unit to the local feeder automation unit.
10. The measurement and control device according to any one of claims 3 to 5, wherein the measurement and control unit and the remote control terminal each carry a self-checking system, and when the self-checking system carried by the measurement and control unit or the remote control terminal reports a failure, the centralized feeder automation unit also reports a remote communication failure inside the centralized feeder automation unit to the local feeder automation unit.
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| CN201520221665.5U CN204497849U (en) | 2015-04-13 | 2015-04-13 | A kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot |
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| CN201520221665.5U CN204497849U (en) | 2015-04-13 | 2015-04-13 | A kind ofly take into account measure and control device that is centralized, formula feeder automation on the spot |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025107A (en) * | 2015-07-28 | 2015-11-04 | 国网北京市电力公司 | Power failure information processing method, client and server |
| CN105137184A (en) * | 2015-09-21 | 2015-12-09 | 广东电网有限责任公司东莞供电局 | 10kV bus harmonic wave monitoring method based on feeder protection |
| CN108347032A (en) * | 2018-03-08 | 2018-07-31 | 山东山矿测控技术有限公司 | A method of preventing protective relaying maloperation work |
| CN109444671A (en) * | 2018-12-21 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of type feeder automation remote test system on the spot |
| CN110912075A (en) * | 2019-11-15 | 2020-03-24 | 国网浙江省电力有限公司 | Integrated feeder terminal and distributed feeder automation method thereof |
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2015
- 2015-04-13 CN CN201520221665.5U patent/CN204497849U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025107A (en) * | 2015-07-28 | 2015-11-04 | 国网北京市电力公司 | Power failure information processing method, client and server |
| CN105137184A (en) * | 2015-09-21 | 2015-12-09 | 广东电网有限责任公司东莞供电局 | 10kV bus harmonic wave monitoring method based on feeder protection |
| CN105137184B (en) * | 2015-09-21 | 2018-01-30 | 广东电网有限责任公司东莞供电局 | 10kV bus harmonic wave monitoring method based on feeder protection |
| CN108347032A (en) * | 2018-03-08 | 2018-07-31 | 山东山矿测控技术有限公司 | A method of preventing protective relaying maloperation work |
| CN109444671A (en) * | 2018-12-21 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of type feeder automation remote test system on the spot |
| CN109444671B (en) * | 2018-12-21 | 2021-08-24 | 云南电网有限责任公司电力科学研究院 | On-site feeder automation remote test system |
| CN110912075A (en) * | 2019-11-15 | 2020-03-24 | 国网浙江省电力有限公司 | Integrated feeder terminal and distributed feeder automation method thereof |
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