CN217956702U - Novel reactive power compensation device for compensating two sections of buses by one set of high-voltage reactive power compensation device - Google Patents
Novel reactive power compensation device for compensating two sections of buses by one set of high-voltage reactive power compensation device Download PDFInfo
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- CN217956702U CN217956702U CN202221995645.XU CN202221995645U CN217956702U CN 217956702 U CN217956702 U CN 217956702U CN 202221995645 U CN202221995645 U CN 202221995645U CN 217956702 U CN217956702 U CN 217956702U
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- Y02E40/30—Reactive power compensation
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Abstract
The novel reactive power compensation device for compensating the two sections of buses comprises a control power supply, wherein a switching component is electrically connected to the control power supply through a miniature circuit breaker, and the switching component is used for stopping and starting the control power supply; the control power supply is connected with a switching-on and switching-off assembly, and the switching-on and switching-off assembly comprises a switching-on and switching-off loop and a switching-on and switching-off indicating loop; the control power supply is also connected with a protection tripping alarm component and a locking component, the protection tripping alarm component is used for sending out a tripping alarm signal, and the locking component is used for realizing locking isolation by using an electromagnetic door lock; the device is characterized by further comprising a sampling loop, a protection loop and a display loop, wherein the sampling loop comprises a sampling current loop and a sampling voltage loop, and the protection loop comprises a current protection loop, a discharge indication loop and an unbalanced voltage protection loop.
Description
The technical field is as follows:
the utility model relates to a novel reactive power compensator of two sections generating lines of one set of high-pressure reactive power compensator compensation.
Background art:
the transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system, and the transformer substation in a power plant is a boosting transformer substation which is used for boosting the electric energy generated by a generator and then feeding the electric energy into a high-voltage power grid.
The transformer station mainly comprises a first-class transformer station, a second-class transformer station, a third-class transformer station and a fourth-class transformer station, wherein electrical equipment in the transformer station is divided into primary equipment and secondary equipment, the primary equipment mainly comprises a transformer, a high-voltage circuit breaker, an isolating switch, a bus, a lightning arrester, a capacitor, a reactor and the like, and the secondary equipment mainly comprises a relay protection device, an automatic device, a measurement and control device, a metering device, an automatic system and direct-current equipment for providing power for the secondary equipment.
The existing power grid system is usually used by matching one section of bus with one reactive power compensation device, when one section of bus is standby, the matched reactive power compensation device is also in a standby state, when two sections of buses are used, two sets of devices are required to be matched, so that the investment cost is increased, and the workload of later maintenance is large; therefore, the novel reactive power compensation device for compensating the two sections of buses by using the high-voltage reactive power compensation device reduces the investment cost and the maintenance cost, and has higher economical efficiency and practicability compared with the prior art.
The utility model has the following contents:
the embodiment of the utility model provides a novel reactive power compensator of two sections generating lines of a set of high-pressure reactive power compensator compensation, structural design is reasonable, based on polymorphic type electrical component, can form effective linkage cooperation between a plurality of functional block in the control system, make two sections generating lines in the transformer substation can share one set of reactive power compensator, reduce cost and later maintenance work load, richened control system's functionality to can automatic identification and automatic each electrical equipment who is applicable to in the transformer substation, guarantee the steady accurate operation of transformer substation; meanwhile, in the actual use process, different switching operation mode control strategies can be adopted according to multiple electrical parameters to meet multiple requirements of users, and the automatic control device is used as a reactive compensation automatic control device of a power capacitor bank, has complete functions, has the functions of protection, measurement, control and networking communication of capacitors, and solves the problems in the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the novel reactive power compensation device for compensating the two sections of buses comprises a control power supply, wherein a switching component is electrically connected to the control power supply through a miniature circuit breaker, and the switching component is used for stopping and starting the control power supply; the control power supply is connected with a switching-on and switching-off assembly, and the switching-on and switching-off assembly comprises a switching-on and switching-off loop and a switching-on and switching-off indicating loop; the control power supply is also connected with a protection tripping alarm component and a locking component, the protection tripping alarm component is used for sending out a tripping alarm signal, and the locking component is used for realizing locking isolation by using an electromagnetic door lock;
the device is characterized by further comprising a sampling loop, a protection loop and a display loop, wherein the sampling loop comprises a sampling current loop and a sampling voltage loop, and the protection loop comprises a current protection loop, a discharge indication loop and an unbalanced voltage protection loop.
The switching component comprises a manual switching loop and an automatic switching loop, and a manual gear, a stop gear and an automatic gear are arranged on the switching component.
The on-off circuit is provided with alternating current contactors connected in parallel, and an on-off coil is connected to the alternating current contactor; and an opening indicator lamp and a closing indicator lamp are arranged on the opening and closing indicating loop.
The locking assembly comprises a locking isolation electromagnetic door lock, four locking passages are arranged on the locking isolation electromagnetic door lock, and a knife switch is arranged on the locking isolation electromagnetic door lock.
An automatic protection switch is arranged on the current protection loop; the discharge indicating circuit is provided with discharge indicating lamps connected in parallel; and a voltage transformer is arranged on the unbalanced voltage protection loop.
And a plurality of capacitors are connected in parallel on the high-voltage charged display to correspondingly light a display lamp on the high-voltage charged display.
A current transformer is arranged on the sampling current loop, and an automatic switch is arranged on the current transformer; and voltage transformers connected in parallel are arranged on the sampling voltage loop, and automatic switches are arranged on the voltage transformers.
By adopting the structure, the utility model provides stable power supply for a plurality of electrical devices in the control system through the control power supply; the control of stopping, starting and gear shifting of a power supply is realized through the switching assembly, and accurate and quick switching can be realized; switching-on and switching-off actions and switching-on and switching-off prompts are carried out through the switching-on and switching-off assembly so as to visually display the working state of the control system; the trip alarm component is protected to send out a trip alarm signal under abnormal conditions, and the locking component is used for realizing locking isolation, so that the safety, practicability, stability and high efficiency are realized.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an electrical schematic diagram of the switching assembly of the present invention.
Fig. 3 is an electrical schematic diagram of the opening/closing assembly of the present invention.
Fig. 4 is an electrical schematic diagram of the trip protection alarm assembly of the present invention.
Fig. 5 is an electrical schematic of the latch assembly of the present invention.
Fig. 6 is an electrical schematic diagram of the sampling circuit of the present invention.
Fig. 7 is an electrical schematic diagram of the protection circuit of the present invention.
Fig. 8 is an electrical schematic diagram of a display circuit according to the present invention.
Fig. 9 is a schematic view of the usage state of the present invention.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the present invention will be explained in detail by the following embodiments and the accompanying drawings.
As shown in fig. 1 to 9, a novel reactive power compensation device for compensating two-section buses by using a set of high-voltage reactive power compensation device comprises a control power supply, wherein a switching component is electrically connected to the control power supply through a miniature circuit breaker, and the switching component is used for stopping and starting the control power supply; the control power supply is connected with a switching-on and switching-off assembly, and the switching-on and switching-off assembly comprises a switching-on and switching-off loop and a switching-on and switching-off indicating loop; the control power supply is also connected with a protection tripping alarm component and a locking component, the protection tripping alarm component is used for sending out a tripping alarm signal, and the locking component is used for realizing locking isolation by using an electromagnetic door lock;
the device is characterized by further comprising a sampling loop, a protection loop and a display loop, wherein the sampling loop comprises a sampling current loop and a sampling voltage loop, and the protection loop comprises a current protection loop, a discharge indication loop and an unbalanced voltage protection loop.
The switching component comprises a manual switching loop and an automatic switching loop, and a manual gear, a stop gear and an automatic gear are arranged on the switching component.
The switching-on and switching-off loop is provided with an alternating current contactor which is connected in parallel, and the alternating current contactor is connected with a switching-on and switching-off coil; and an opening indicating lamp and a closing indicating lamp are arranged on the opening and closing indicating loop.
The locking assembly comprises a locking isolation electromagnetic door lock, four locking passages are arranged on the locking isolation electromagnetic door lock, and a knife switch is arranged on the locking isolation electromagnetic door lock.
An automatic protection switch is arranged on the current protection loop; the discharge indicating circuit is provided with discharge indicating lamps connected in parallel; and a voltage transformer is arranged on the unbalanced voltage protection loop.
And a plurality of capacitors are connected in parallel on the high-voltage charged display to correspondingly light a display lamp on the high-voltage charged display.
A current transformer is arranged on the sampling current loop, and an automatic switch is arranged on the current transformer; and voltage transformers connected in parallel are arranged on the sampling voltage loop, and automatic switches are arranged on the voltage transformers.
The embodiment of the utility model provides an in the embodiment novel reactive power compensator of one set of high-pressure reactive power compensator compensation two sections generating lines's theory of operation do: based on various types of electrical elements, effective linkage coordination can be formed among a plurality of functional components in the control system, so that two sections of buses in the transformer substation can share one reactive compensation device, the cost and the later maintenance workload are reduced, and the functionality of the control system is enriched, so that the control system can be automatically identified and automatically applied to each electrical device in the transformer substation, and the stable and accurate operation of the transformer substation is ensured; meanwhile, in the actual use process, different switching operation mode control strategies can be adopted according to multiple electrical parameters to meet multiple requirements of users, and the device serving as a reactive compensation automatic control device of a power capacitor bank is complete in function and has the functions of protection, measurement, control and networking communication of capacitors.
In the whole scheme, the system mainly comprises a control power supply, wherein a switching component is electrically connected to the control power supply through a miniature circuit breaker and is used for stopping and starting the control power supply; the control power supply is connected with a switching-on and switching-off assembly, and the switching-on and switching-off assembly comprises a switching-on and switching-off loop and a switching-on and switching-off indicating loop; the control power supply is also connected with a protection tripping alarm component and a locking component, the protection tripping alarm component is used for sending out a tripping alarm signal, and the locking component is used for realizing locking isolation by using an electromagnetic door lock;
the device is characterized by further comprising a sampling loop, a protection loop and a display loop, wherein the sampling loop comprises a sampling current loop and a sampling voltage loop, and the protection loop comprises a current protection loop, a discharge indication loop and an unbalanced voltage protection loop.
Under above-mentioned hardware equipment and connecting circuit's mutually supporting effect, realize the control drive to transformer substation's electrical equipment, compare in prior art in the controller of function singleness, the control system in this application integrates the degree higher, and the function is complete.
Preferably, the switching component comprises a manual switching loop and an automatic switching loop, and a manual gear, a stop gear and an automatic gear are arranged on the switching component, so that selection and setting can be performed according to actual application scenes, and rapid and accurate control is realized.
Preferably, the switching-on and switching-off loop is provided with alternating current contactors connected in parallel, and the alternating current contactor is connected with a switching-on and switching-off coil; the opening and closing indicating circuit is provided with an opening indicating lamp and a closing indicating lamp, so that accurate prompt can be provided for users according to opening and closing actions.
Preferably, the shutting subassembly keeps apart the electromagnetism lock including shutting, is equipped with four ways shutting passageway on the electromagnetism lock is kept apart in shutting, keeps apart the electromagnetism lock in shutting and is equipped with the knife switch, can realize the isolation and the break-make of a plurality of passageways according to the practical application demand, and response speed is fast, and the action triggers accurately.
Preferably, an automatic protection switch is arranged on the current protection loop; the discharge indicating circuit is provided with discharge indicating lamps connected in parallel; the voltage transformer is arranged on the unbalanced voltage protection loop, so that the use condition of the transformer substation can be visually observed, and effective protection is provided.
Particularly, for the reactive compensation and harmonic suppression links, the control system in the application can be completely applicable, corresponding parameters can be adjusted and set according to instructions and actual requirements of users under the matched action of a plurality of functional components or electrical equipment, and the control system can be flexibly applied to various different transformer substation working environments; in addition, the control system can also visually feed back the real-time use state to the user, and can take corresponding treatment measures when a fault or abnormal state occurs, so that the two sections of buses can share one reactive power compensation device and the control system, thereby reducing the cost and the later maintenance workload.
The control strategy mainly comprises voltage reactive comprehensive switching, voltage switching, reactive switching and voltage time switching; specifically, in the voltage reactive comprehensive switching function strategy, on the premise of qualified voltage, when the reactive power is less, the capacitor is switched on, and when the reactive power is more, the capacitor is switched off; on the premise of high voltage, in order to prevent switching oscillation and lock the input, the capacitor can be switched when the reactive power is too much, and the capacitor can be switched forcibly to regulate the voltage; on the premise of low voltage, in order to prevent switching oscillation and block and cut off, when the idle work is low, the capacitor is thrown, and the capacitor can be thrown forcibly to regulate the voltage; when the system voltage is too low or too high, the capacitor can be switched off, and the blocking capacitor is switched in to realize undervoltage protection or overvoltage protection.
In the voltage switching function strategy, when the voltage is lower than the voltage lower limit value and higher than the undervoltage value, a capacitor is put into use; when the voltage is higher than the upper voltage limit value and lower than the overvoltage value, the capacitor is cut off; meanwhile, the overvoltage protection circuit also has an undervoltage protection function and an overvoltage protection function.
In the reactive switching function strategy, when the reactive vacancy is larger than the switching threshold, a capacitor is switched, and in order to prevent switching oscillation, the switching is locked when the reactive vacancy is close to an overvoltage value; when the reactive power shortage is less than the cut-off threshold, the capacitor is cut off to prevent switching oscillation and to close the cut-off when the under-voltage value is approached.
In the voltage switching function strategy, when the voltage is lower than the voltage lower limit value and higher than the undervoltage value, a capacitor is put into use; when the voltage is higher than the upper voltage limit value and lower than the overvoltage value, the capacitor is switched in the switching time period, and the capacitor is switched in the switching time period.
Furthermore, an under-voltage protection function and an over-voltage protection function are arranged in the function strategies, so that the overall operation safety of the device is improved.
To sum up, the novel reactive power compensation device for compensating two sections of busbars by one set of high-voltage reactive power compensation device in the embodiment of the invention can form effective linkage coordination among a plurality of functional components in a control system based on a plurality of types of electric elements, so that two sections of busbars in a transformer substation can share one set of reactive power compensation device, the cost and the workload of later maintenance are reduced, and the functionality of the control system is enriched, thereby being capable of automatically identifying and automatically adapting to each electric device in the transformer substation, and ensuring the stable and accurate operation of the transformer substation; meanwhile, in the actual use process, different switching operation mode control strategies can be adopted according to multiple electrical parameters to meet multiple requirements of users, the automatic control device is used as a reactive compensation automatic control device of a power capacitor bank, the automatic control device is complete in function, has the functions of protection, measurement, control and networking communication of capacitors, is convenient to popularize and popularize, can be used for drive control of most secondary equipment of a transformer substation, and provides a foundation for standard safe use of transformer substation equipment.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. A novel reactive power compensator of one set of high pressure reactive power compensator compensation two sections generating lines, its characterized in that: the control power supply is electrically connected with a switching component through a miniature circuit breaker, and the switching component is used for stopping and starting the control power supply; the control power supply is connected with a switching-on and switching-off assembly, and the switching-on and switching-off assembly comprises a switching-on and switching-off loop and a switching-on and switching-off indicating loop; the control power supply is also connected with a protection tripping alarm component and a locking component, the protection tripping alarm component is used for sending out a tripping alarm signal, and the locking component is used for realizing locking isolation by using an electromagnetic door lock;
the device is characterized by further comprising a sampling loop, a protection loop and a display loop, wherein the sampling loop comprises a sampling current loop and a sampling voltage loop, and the protection loop comprises a current protection loop, a discharge indication loop and an unbalanced voltage protection loop.
2. The novel reactive power compensation device for compensating two sections of buses of the high-voltage reactive power compensation device according to claim 1, is characterized in that: the switching assembly comprises a manual switching loop and an automatic switching loop, and a manual gear, a stop gear and an automatic gear are arranged on the switching assembly.
3. The novel reactive power compensation device for compensating two sections of buses of the set of high-voltage reactive power compensation device according to claim 1, characterized in that: the switching-on and switching-off loop is provided with an alternating current contactor which is connected in parallel, and the alternating current contactor is connected with a switching-on and switching-off coil; and an opening indicating lamp and a closing indicating lamp are arranged on the opening and closing indicating loop.
4. The novel reactive power compensation device for compensating two sections of buses of the high-voltage reactive power compensation device according to claim 1, is characterized in that: the locking assembly comprises a locking isolation electromagnetic door lock, four locking passages are arranged on the locking isolation electromagnetic door lock, and a knife switch is arranged on the locking isolation electromagnetic door lock.
5. The novel reactive power compensation device for compensating two sections of buses of the high-voltage reactive power compensation device according to claim 1, is characterized in that: an automatic protection switch is arranged on the current protection loop; the discharge indicating circuit is provided with discharge indicating lamps connected in parallel; and a voltage transformer is arranged on the unbalanced voltage protection loop.
6. The novel reactive power compensation device for compensating two sections of buses of the high-voltage reactive power compensation device according to claim 1, is characterized in that: and a plurality of capacitors are connected in parallel on the high-voltage charged display to correspondingly light a display lamp on the high-voltage charged display.
7. The novel reactive power compensation device for compensating two sections of buses of the high-voltage reactive power compensation device according to claim 1, is characterized in that: a current transformer is arranged on the sampling current loop, and an automatic switch is arranged on the current transformer; and voltage transformers connected in parallel are arranged on the sampling voltage loop, and automatic switches are arranged on the voltage transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221995645.XU CN217956702U (en) | 2022-07-29 | 2022-07-29 | Novel reactive power compensation device for compensating two sections of buses by one set of high-voltage reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221995645.XU CN217956702U (en) | 2022-07-29 | 2022-07-29 | Novel reactive power compensation device for compensating two sections of buses by one set of high-voltage reactive power compensation device |
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| CN217956702U true CN217956702U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221995645.XU Active CN217956702U (en) | 2022-07-29 | 2022-07-29 | Novel reactive power compensation device for compensating two sections of buses by one set of high-voltage reactive power compensation device |
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