CN217135226U - Integrated measurement control device and system for distribution line - Google Patents
Integrated measurement control device and system for distribution line Download PDFInfo
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- CN217135226U CN217135226U CN202220733532.6U CN202220733532U CN217135226U CN 217135226 U CN217135226 U CN 217135226U CN 202220733532 U CN202220733532 U CN 202220733532U CN 217135226 U CN217135226 U CN 217135226U
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Abstract
The utility model discloses a distribution line integrated measurement control device, which integrates the functions of a high-voltage capacitor energy-taking power supply, a voltage current transformer and an intelligent measurement and control terminal, can monitor the operation data of the distribution line on line, and calculates and judges the data condition of the current voltage through the signal acquisition of the current voltage; the device is arranged at the positions of a section switch, a boundary switch and a connection switch of an overhead line, namely on a pole tower of a circuit breaker on a pole, and a plurality of devices are arranged on one distribution line, so that the fault location and isolation of the distribution line can be realized, and the implementation requirement of distribution automation is met; no extra wiring work is required in field installation, and the installation and debugging are simple, so that the labor intensity of personnel is reduced, and a large amount of manpower and material resources are saved; the working efficiency is improved, the power supply reliability is improved, and the line loss is reduced; the control cable of secondary connection adopts and prevents the aviation plug of opening a way, can directly change with electricity. The utility model discloses satisfy the lean development requirement of electric power system, intensification.
Description
Technical Field
The application relates to the technical field of power grid distribution line detection, in particular to a distribution line integrated measurement control device and system.
Background
Line loss is the loss of the power grid in the links of transmission, distribution, management and the like of electric energy. The electric energy loss of the power grid is an important economic index for power supply enterprises, and the reduction of the line loss rate is a main work and a long-term task faced by the power supply enterprises. The overhead line is usually long in line and long in operation and maintenance time, and operation and maintenance personnel need to collect line operation data on site if the operation and maintenance personnel want to collect the line operation data. For reducing operation maintenance time, real-time on-line monitoring and uploading distribution lines operating data, newly-built and reform transform the pole-mounted switch and should install distribution terminal (contain two-way measurement function), realize electric quantity data automatic acquisition, distribution automation terminal possesses the ability of uploading distribution automation main website with electric quantity and supporting management data simultaneously.
The pole-mounted circuit breaker is mainly used for sectionalized switching, control and protection of a distribution line interval and can be used for switching on and off a short-circuit power supply. The requirement of distribution automation is met by adopting a mode that a pole-mounted circuit breaker is used for configuring a distribution terminal and a voltage transformer PT at present. The existing method needs to carry out different installation aiming at different overhead line forms, and adopts a double-pole installation method by considering the height of a pole tower at the position of an original switch and the different wire installation methods; guarantee that the circuit breaker possesses under the three phase current transformer CT 'S of precision for 0.5S level the circumstances, still need install the circuit breaker on the post between two cement poles, still need install voltage transformer PT and power distribution terminal additional simultaneously to realize circuit breaker electric operation and data signal' S collection on the post. The mounting means of prior art is too loaded down with trivial details, and the equipment that needs the debugging is more, needs to solve before the installation and marks the problem of taking up an area of to thereby guarantee near original shaft tower new pole tower installation PT and FTU device, installation operation that can not be quick.
SUMMERY OF THE UTILITY MODEL
The application provides a distribution lines integration measurement control device and system to it is big to solve traditional measurement control device area, and the problem that installation and debugging are loaded down with trivial details etc
The distribution line integrated measurement control device is characterized by being arranged at the positions of a section switch, a boundary switch and a connection switch of an overhead line, namely on a pole tower of an on-pole circuit breaker and connected with the on-pole circuit breaker through a current transformer; including the box, the box front side is provided with the switch door, and electric capacity, distribution terminal, power management module, dual power supply switching device and voltage transformer are got to installation high pressure in the box, wherein:
the high-voltage electricity taking capacitor is used as a storage working power supply and provides electric energy under the condition of power loss, and the high-voltage electricity taking capacitor is connected with the power supply management module;
the power supply management module is used for detecting the power supply condition and is connected with the dual-power switching device and the power distribution terminal;
the dual-power switching device is simultaneously connected with an alternating current power supply and a power distribution terminal of the power distribution line and is used for switching alternating current and high-voltage power-taking capacitors;
the voltage transformer is connected with the power distribution terminal and is used for acquiring voltage signals of the distribution line in real time;
the current transformer is connected with the power distribution terminal and is used for acquiring current signals of the distribution line in real time;
the power distribution terminal is connected with the power management module and the dual-power switching device and is used for receiving a power detection condition signal and controlling power switching; the voltage transformer and the current transformer are connected, the real-time voltage and current conditions of the distribution line are monitored, and the fault condition is judged and identified; and the device is connected with the pole-mounted circuit breaker, judges fault location and controls the switch of the circuit breaker to complete fault location and isolation and automatic recovery after fault removal.
Preferably, the method further comprises the following steps: a GPRS \ APN private network communication module;
the GPRS \ APN private network communication module is connected with the power distribution terminal, is in communication connection with a remote power distribution station management system and is used for remotely transmitting real-time data.
Preferably, the method further comprises the following steps: a secure cryptographic module interface;
the interface of the safety encryption module is connected with a power distribution terminal, and the GPRS \ APN private network communication module is in communication connection with a remote power distribution station management system through the interface of the safety encryption module.
Preferably, an expansion storage module is further provided;
the expansion storage module is connected with the power distribution terminal and used for storing information, and a field fault tracing function can be achieved.
Preferably, the extended storage module 6 is simultaneously connected with the GPRS \ APN private network communication module (7) and is used for remotely recalling and testing fault information of the power distribution station, remotely transmitting a fault analysis result and fault recall data to a power distribution station management system, and completing remote accident tracing and checking.
Preferably, the control cable of the secondary connection adopts an open-circuit-proof aviation plug and can be directly replaced in a charged mode.
The integrated measurement and control system for the distribution line is characterized by comprising any one of the integrated measuring devices for the spraying point line.
According to the technical scheme, the integrated measurement control device and system for the power distribution line integrate the functions of a high-voltage capacitor energy-taking power supply, a voltage current transformer and an intelligent measurement and control terminal, can monitor the operation data of the power distribution line on line, and calculate and judge the data condition of current and voltage through the signal acquisition of the current and voltage; the device is arranged at the positions of a section switch, a boundary switch and a connection switch of an overhead line, namely on a pole tower of a circuit breaker on a pole, and after a plurality of measurement control devices are arranged on one distribution line, the fault location and isolation of the distribution line can be realized, so that the requirement of automatic implementation of distribution is met; no extra wiring work is required in field installation, and the installation and debugging are simple, so that the labor intensity of personnel is reduced, and a large amount of manpower and material resources are saved; the working efficiency is improved, the power supply reliability is improved, and the line loss is reduced; the control cable for secondary connection adopts an open-circuit-proof aviation plug and can be directly replaced in a charged manner; the measurement accuracy of circuit breaker on the assurance post realizes the real-time collection of electric energy data, conveniently in time effectively carries out data analysis, effectively improves overhead line reliability, reduces the line loss, satisfies the lean of electric power system, intensification's development requirement.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a distribution line integrated measurement control device in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the external structure of FIG. 1;
FIG. 3 is a front view of the case of FIG. 2 with the open and closed doors closed;
FIG. 4 is a front view of the opening and closing door of the case of FIG. 2 in an opened state;
FIG. 5 is a front view of the application scenario of FIG. 1;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is a schematic diagram of the operation of FIG. 1;
FIG. 8 is a schematic diagram of the current collection of the current transformer of FIG. 7;
FIG. 9 is a voltage acquisition schematic diagram of the voltage transformer of FIG. 7;
fig. 10 is a schematic diagram of the operating power supply circuit of fig. 7.
Illustration of the drawings:
wherein, 1-a box body; 2, opening and closing the door; 3, taking a capacitor at high voltage; 4-a voltage transformer; 5-a current transformer; 6-expanding the storage module; 7-GPRS \ APN private network communication module; 8-secure cryptographic module interface; 1 n-a power distribution terminal; 11 n-power management module; 12 n-double power supply switching device; 31 n-a first high-voltage power-taking capacitor; 32 n-a second high-voltage power-taking capacitor; an N-distribution line integrated measurement control device; TA-closing button; HA-brake-off button; JK1/JK2/ZK/1K 1-operating the power supply loop switch; JK 3-Voltage Transformer switch; JX 1-row of terminals inside the mechanism; a CZ-26 core aviation plug; CZ1-6 core aviation plug; the CZ2-6 core aviation plug of preventing opening a way; CZ3-14 core aviation plug; CTX 1-aviation plug.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
In the technical scheme provided by the application, a distribution line integrated measurement control device and system are provided. Please refer to fig. 1 to 4, which include: the distribution line integrated measurement control device is connected with the pole-mounted circuit breaker through a current transformer 5; including box 1, the box front side is provided with switch door 2, and electric capacity 3, distribution terminal 1n, power management module 11n, dual power switching device 12n and voltage transformer 4 are got to installation high pressure in the box 1, wherein:
the high-voltage power taking capacitor 3 serves as a reserve working power supply and provides electric energy under the condition of power loss, the backup power supply normally works for not less than 120 hours and meets the requirements that the switch of the on-pole circuit breaker is continuously switched on and off for more than 30 times; in this embodiment, the high-voltage power-taking capacitor 3 is formed by using the first high-voltage power-taking capacitor 31n and the second high-voltage power-taking capacitor 32n together, so that the miniaturization and light weight of the power supply are realized, the weight is less than 2kg, and the output power is not lower than 3W; the first high-voltage power-taking capacitor 31n and the second high-voltage power-taking capacitor 32n are connected with the power management module 11 n;
the power management module 11n is used for detecting the power condition, and the power management module 11n is connected with the dual power supply switching device 12n and the power distribution terminal 1 n; the double-power-supply switching device 12n is simultaneously connected with an alternating-current power supply of the distribution line and a distribution terminal 1n, and the double-power-supply switching device 12n is used for switching alternating current and a high-voltage power-taking capacitor 3;
the power distribution terminal 1n is connected with the power management module 11n and the dual-power switching device 12n, receives a power detection condition signal and controls power switching; connecting a voltage transformer 4 and a current transformer 5, acquiring voltage and current signals of a distribution line in real time by the voltage transformer 4 and the current transformer 5, transmitting the voltage and current signals to a power distribution terminal 1n, and judging and identifying fault conditions by the power distribution terminal 1 n; the power distribution terminal 1n is connected with the pole-mounted circuit breaker, judges fault location and controls the pole-mounted circuit breaker to switch when a fault occurs, and completes the location and isolation of the fault on site and automatic recovery after the fault is removed.
Furthermore, the integrated measurement control device for the distribution line also comprises a GPRS \ APN private network communication module 7, wherein the GPRS \ APN private network communication module 7 is connected with the distribution terminal 1n and is in communication connection with a remote distribution station management system for remote transmission of real-time data;
the distribution line integrated measurement control device further comprises a safety encryption module interface 8, the safety encryption module interface 8 is connected with the power distribution terminal 1n, and the GPRS \ APN private network communication module 7 is in communication connection with a remote power distribution station management system through the safety encryption module interface 8 and is used for remote opening and closing operation and remote setting and maintenance.
Distribution lines integration measurement control device is provided with extension storage module 6, extension storage module 6 connect distribution terminal 1n with, GPRS APN private network communication module 7, extension storage module 6 is used for information storage, can realize the on-the-spot trouble and trace back the function to carry out long-range transmission with trouble analysis result, trouble and remember data and look over for power distribution station management system, accomplish long-range accident and trace back and look over.
Furthermore, the control cable of the secondary connection adopts an open-circuit-proof aviation plug and can be directly replaced in a charged mode.
As shown in figure 5 and figure 6, distribution lines integration measurement control device installs in lower part in position cement poles such as 10kV overhead line contact switch, section switch, boundary switch, on former post circuit breaker shaft tower installation can, apart from ground 2500mm, through the switch and the integration measurement control device of a plurality of position locations, whether realize judging a certain section circuit and have a trouble, seek the trouble position fast, can directly realize the healing of circuit trouble after handling.
As shown in fig. 7, the working principle of the integrated measurement and control device for distribution lines is as follows: the first high-voltage power-taking capacitor 31n and the second high-voltage power-taking capacitor 32n are used as reserve working power supplies to store energy, so that under the condition that the power management module 11n monitors that the distribution line loses power, namely the voltage transformer P loses power, the power distribution terminal 1n is switched to the high-voltage power-taking capacitor 3 through the dual-power-supply switching device 12n to supply power, normal operation is guaranteed, and the principle of a power supply loop is shown in fig. 10; the power distribution terminal 1n is connected with the circuit breaker through the current transformer 5, the power distribution terminal 1n is connected with the voltage transformer 4, three-phase current, three-phase voltage and the state of the circuit breaker of the distribution line can be acquired in real time and monitored on line through the current transformer 5 and the voltage transformer 4, and the acquisition schematic diagrams of the current transformer 5 and the voltage transformer 4 are respectively shown in fig. 8 and 9; the power distribution terminal 1n has a local analysis function of a line running state, can analyze and compare current, voltage and zero-sequence current data in real time, and identifies three-phase imbalance and overload running working conditions; adopt the special net of removal APN GPRS communication, to monitor the long-range distribution station management system of uploading of data, realize distribution lines running state monitoring and protection, set up circuit breaker closing button TA in box 1 through intelligent control, circuit breaker separating brake button HA, voltage transformer switch JK3 and power switch JK1, JK2, ZK, 1K1, realize intelligent reclosing protection, once coincide and accomplish the location of trouble on the spot, the automatic recovery after isolation and the trouble is relieved, satisfy the requirement that distribution automation implemented. Distribution terminal 1n possesses intelligent on-the-spot protection mode, realizes the difference in level cooperation through syllogic overcurrent direction protect function and transformer substation's protection definite value.
The control cable of distribution lines integration measurement control device secondary connection adopts and prevents open circuit aviation plug, and JX1 is terminal row in the mechanism, and CZ is 26 core aviation plugs, and CZ1 is 6 core aviation plugs, and CZ2 is 6 core and prevents open circuit aviation plugs, and CZ3 is 14 core aviation plugs, and CTX1 is aviation plugs, can directly change with electricity.
And the extended storage module 6 is connected with the power distribution terminal 1n and the APN GPRS communication private network communication module 7 and has the functions of on-site analysis of line fault states and fault recall. Through a main control unit in the integrated measuring device, the acquisition device records three sections of overcurrent fault short-circuit current values and voltage values and records a ground fault zero-sequence current value and a ground fault zero-sequence voltage value, and the number of circularly recorded faults is not less than 256; the fault analysis system has a fault analysis result remote transmission function, supports the master station to recall and measure fault information, remotely transmits fault recall data, and is matched with the master station to finish accident recall. The GPRS \ APN private network communication module 7 is provided with a safety encryption module interface 8, and supports remote setting and remote maintenance of protection setting values and remote opening and closing operations under the safety protection condition.
In the technical scheme provided by the application, a distribution line integrated measurement control system is further provided, and the connection between a remote distribution station management system and a measurement control device is established through a distribution communication network by relying on the distribution line integrated measurement control device, so that real-time online monitoring and uploading of distribution line operation data can be realized.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (6)
1. The distribution line integrated measurement control device is characterized by being arranged at the positions of a section switch, a boundary switch and a connection switch of an overhead line, namely on a pole tower of an on-pole circuit breaker, and connected with the on-pole circuit breaker through a current transformer (5); including box (1), the box front side is provided with switch door (2), and installation high pressure is got electric capacity (3), distribution terminal (1n), power management module (11n), dual supply auto-change over device (12n) and voltage transformer (4) in box (1), wherein:
the high-voltage electricity-taking capacitor (3) is used as a reserve working power supply and provides electric energy under the condition of power loss, and the high-voltage electricity-taking capacitor (3) is connected with the power management module (11 n);
the power supply management module (11n) is used for detecting the power supply condition, and the power supply management module (11n) is connected with the double-power-supply switching device (12n) and the power distribution terminal (1 n);
the double-power-source switching device (12n) is simultaneously connected with an alternating-current power source of a distribution line and a distribution terminal (1n), and the double-power-source switching device (12n) is used for switching alternating current and a high-voltage power-taking capacitor (3);
the voltage transformer (4) is connected with the power distribution terminal (1n) and is used for acquiring voltage signals of a power distribution line in real time;
the current transformer (5) is connected with the power distribution terminal (1n) and is used for acquiring current signals of a distribution line in real time;
the power distribution terminal (1n) is connected with the power management module (11n) and the dual-power switching device (12n) and is used for receiving a power detection condition signal and controlling power switching; the voltage transformer (4) and the current transformer (5) are connected, the real-time voltage and current conditions of the distribution line are monitored, and the fault condition is judged and identified; and the device is connected with the pole-mounted circuit breaker, judges fault location and controls the switch of the circuit breaker to complete fault location and isolation and automatic recovery after fault removal.
2. The integrated measurement and control device for distribution lines according to claim 1, further comprising: a GPRS \ APN private network communication module (7);
the GPRS \ APN private network communication module (7) is connected with the power distribution terminal (1n), is in communication connection with a remote power distribution station management system and is used for remotely transmitting real-time data.
3. The integrated measurement and control device for distribution lines according to claim 2, further comprising: a secure cryptographic module interface (8);
the safety encryption module interface (8) is connected with a power distribution terminal (1n), and the GPRS \ APN private network communication module (7) is in communication connection with a remote power distribution station management system through the safety encryption module interface (8).
4. The integrated measurement and control device of the distribution line according to claim 3, characterized in that an expansion storage module (6) is further provided;
the expansion storage module (6) is connected with the power distribution terminal (1n), and the expansion storage module (6) is used for storing information and can realize a field fault tracing function.
5. The integrated measurement and control device for the distribution line according to claim 4, wherein the extended storage module (6) is simultaneously connected with the GPRS \ APN private network communication module (7) and is used for remotely recalling and testing fault information of a distribution substation, remotely transmitting a fault analysis result and fault recall data to a distribution substation management system, and completing remote fault tracing and checking.
6. An integrated measurement and control system for distribution lines, characterized in that the measurement and control system comprises the integrated measurement and control device for distribution lines according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733532.6U CN217135226U (en) | 2022-03-30 | 2022-03-30 | Integrated measurement control device and system for distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733532.6U CN217135226U (en) | 2022-03-30 | 2022-03-30 | Integrated measurement control device and system for distribution line |
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| Publication Number | Publication Date |
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| CN217135226U true CN217135226U (en) | 2022-08-05 |
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| CN202220733532.6U Active CN217135226U (en) | 2022-03-30 | 2022-03-30 | Integrated measurement control device and system for distribution line |
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- 2022-03-30 CN CN202220733532.6U patent/CN217135226U/en active Active
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