CN215817654U - Fault grading processing system for AC/DC hybrid power distribution network - Google Patents
Fault grading processing system for AC/DC hybrid power distribution network Download PDFInfo
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- CN215817654U CN215817654U CN202121222611.2U CN202121222611U CN215817654U CN 215817654 U CN215817654 U CN 215817654U CN 202121222611 U CN202121222611 U CN 202121222611U CN 215817654 U CN215817654 U CN 215817654U
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Abstract
The utility model discloses a fault grading processing system for an alternating current-direct current hybrid power distribution network, relates to the technical field of power grid fault grading processing, and aims to solve the problems that the existing alternating current-direct current hybrid power distribution network in the prior art is not completely mature in technology, most power grids have certain flaws in the using process, and a large amount of manpower and material resources are required to be invested in a traditional maintenance mode for maintenance, but the processing efficiency cannot be further improved. The alternating current distribution network end and the direct current distribution network end are interacted, the alternating current distribution network end and the direct current distribution network end comprise a bidirectional energy storage module and an interconnection converter, the alternating current distribution network end comprises an alternating current frequency voltage module, the direct current distribution network end comprises a direct current frequency voltage module, the output ends of the alternating current distribution network end and the direct current distribution network end are connected with the input end of a network port distribution terminal, and the interconnection converter is connected with the power generation module in a bidirectional mode.
Description
Technical Field
The utility model relates to the technical field of power grid fault grading processing, in particular to a fault grading processing system for an alternating current-direct current hybrid power distribution network.
Background
The alternating current-direct current hybrid power distribution network refers to a power distribution network in which alternating current and direct current are mixed together, and a traditional alternating current power distribution system has a series of problems of high line loss, power quality disturbance, voltage drop and the like, and is difficult to meet the increasing power requirements of power users. Compared with an alternating-current power distribution network, the direct-current power supply can effectively solve the problems of harmonic waves, unbalanced three phases and other electric energy quality, has obvious advantages in the aspect of improving the power supply quality, and cannot completely replace the alternating-current power distribution network in a short time. Therefore, the alternating current and direct current hybrid power distribution network is a development trend of the future power distribution network on the basis of the alternating current power distribution network.
However, the existing technology of the alternating current-direct current hybrid power distribution network is not completely mature, most of power grids have certain flaws in the using process, a large amount of manpower and material resources are required to be invested in the traditional maintenance mode for maintenance, and the treatment efficiency cannot be further improved; therefore, the existing requirements are not met, and a fault grading processing system for the alternating current-direct current hybrid power distribution network is provided for the existing requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fault grading processing system for an alternating current-direct current hybrid power distribution network, which aims to solve the problems that the existing alternating current-direct current hybrid power distribution network technology proposed in the background technology is not completely mature, most power grids have certain flaws in the using process, and a large amount of manpower and material resources are required to be input for maintenance in the traditional maintenance mode, but the processing efficiency cannot be further improved.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an alternating current-direct current mixes fault stage treatment system for distribution network, includes AC distribution network end, DC distribution network end and overall planning monitor terminal, it is mutual between AC distribution network end and the DC distribution network end, and AC distribution network end and DC distribution network end all include two-way energy storage module and interconnection converter, AC distribution network end includes the AC frequency voltage module, and the DC distribution network end includes the DC frequency voltage module, the output of AC distribution network end and DC distribution network end is connected with the input of net gape distribution terminal, and interconnection converter and power generation module's two-way connection.
Preferably, the power generation module comprises a photovoltaic power generation unit, a wind power generation unit and a hydraulic power generation unit.
Preferably, the overall monitoring terminal comprises a power supply peak value unit, a hybrid testing module and a power self-checking unit.
Preferably, the input end of the hybrid test module is connected with the output ends of the alternating current frequency voltage module and the direct current frequency voltage module.
Preferably, the input end of the power supply peak value unit is connected with the output end of the power comparison module, and the input end of the power self-checking unit is connected with the output end of the energy storage measuring and calculating module.
Preferably, the output end of the overall monitoring terminal is connected with the input end of the microcomputer processing module, the microcomputer processing module comprises a first-level fault connection end, a second-level fault connection end and a third-level fault connection end, and the first-level fault connection end, the second-level fault connection end and the third-level fault connection end are connected with the fault isolation module in a two-way mode.
Compared with the prior art, the utility model has the beneficial effects that:
1. the power supply peak value unit judges whether a power distribution system has a fault problem or not by comparing a peak value with a historical peak value in a normal use state according to a power consumption value acquired according to power distribution equipment, the hybrid test module detects the fluctuation frequency of an alternating current and direct current circuit in a time period manner and judges the current state of an alternating current and direct current power grid according to the change of the wave frequency, the input end of the power supply peak value unit is connected with the output end of the power comparison module, and the power self-detection unit monitors different power generation modes in real time through the existing power equipment detection device so as to rapidly perform feedback processing after the power distribution system has a fault;
2. the utility model is judged by a microcomputer processor, wherein a power distribution system is a primary fault connection end, rapid processing is needed after the occurrence of the fault, an alternating current-direct current power grid is a secondary fault connection end, the judgment operation is manually carried out, then the maintenance processing is carried out, and power equipment is a tertiary fault connection end, so that the fault does not directly influence the power distribution operation of the power grid, and the shutdown or temporary shutdown maintenance can be carried out.
Drawings
FIG. 1 is a flow chart of the grid control of the present invention;
FIG. 2 is a flow chart of the fault analysis of the present invention;
FIG. 3 is a flow chart of the present invention for a hierarchical process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, an embodiment of the present invention is shown: a fault grading processing system for an alternating current and direct current hybrid power distribution network comprises an alternating current power distribution network end, a direct current power distribution network end and an overall monitoring terminal, an overall monitoring terminal is added on the terminal processing of the traditional alternating current and direct current power grid, the overall monitoring terminal is matched with various detection devices and processes to visually acquire data information of power generation, power grid and power distribution stages, an alternating current power distribution network end and a direct current power distribution network end are interacted, the alternating current distribution network end and the direct current distribution network end both comprise a bidirectional energy storage module and an interconnection converter, the alternating current distribution network end comprises an alternating current frequency voltage module, the direct current distribution network end comprises a direct current frequency voltage module, the output ends of the alternating current distribution network end and the direct current distribution network end are connected with the input end of the network port distribution terminal, and the interconnection converter is connected with the power generation module in a bidirectional way, and the power generation module comprises a photovoltaic power generation unit, a wind power generation unit and a hydroelectric power generation unit.
Referring to fig. 2, the overall monitoring terminal includes a power supply peak unit, a hybrid test module, and a power self-check unit, where the power supply peak unit is used to detect the power consumption value obtained according to the power distribution equipment, an input end of the hybrid test module is connected to output ends of the ac voltage module and the dc voltage module, the hybrid test module is used to perform periodic detection on the fluctuation frequency of the ac/dc circuit, and determine the current state of the ac/dc power grid according to the change of the wave frequency, an input end of the power supply peak unit is connected to an output end of the power comparison module, and determine whether the power distribution system has a fault problem by comparing the peak value with a historical peak value in a normal use state, and an input end of the power self-check unit is connected to an output end of the energy storage measurement module, and the power self-check unit is used to perform real-time monitoring on different power generation modes through an existing power equipment detection device, so that the feedback process can be performed quickly after a failure occurs.
Please refer to fig. 3, the output end of the overall monitoring terminal is connected to the input end of the microcomputer processing module, and the microcomputer processing module includes a first-level fault connection end, a second-level fault connection end and a third-level fault connection end, the first-level fault connection end, the second-level fault connection end and the third-level fault connection end are connected to the fault isolation module in a bidirectional manner, the power distribution system is the first-level fault connection end, after the occurrence, rapid processing needs to be performed, the alternating current/direct current power grid is the second-level fault connection end, the manual work carries out judgment operation and then carries out maintenance processing, the power equipment is the third-level fault connection end, the fault does not directly affect the power distribution operation of the power grid, and the power distribution operation can be stopped or temporarily closed for maintenance.
The working principle is as follows: when the device is used, an overall monitoring terminal is additionally arranged on the terminal processing of the traditional alternating current and direct current power grid and is matched with various detection devices and processes to visually acquire data information of power generation, power grid and power distribution stages, the overall monitoring terminal comprises a power supply peak value unit, a hybrid test module and a power self-checking unit, the power supply peak value unit is used for comparing a peak value with a historical peak value in a normal use state to judge whether a power distribution system has a fault problem, the hybrid test module is used for detecting the fluctuation frequency of an alternating current and direct current circuit in a time-interval manner, the current state of the alternating current and direct current power grid is judged according to the change of the wave frequency, the input end of the power supply peak value unit is connected with the output end of the power comparison module, and the power self-checking unit is used for monitoring different power generation modes in real time through the existing power equipment detection device, so that quick feedback processing that carries on after breaking down, at last hand the computer processor judges, wherein distribution system is one-level trouble and allies oneself with the end, need carry out quick processing after appearing, and the alternating current-direct current electric wire netting is second grade trouble allies oneself with the end, carries out maintenance processing again after judging the operation by the manual work, and power equipment is tertiary trouble allies oneself with the end, and here trouble can not directly influence the distribution operation of electric wire netting, can stop or temporarily close the maintenance.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an alternating current-direct current mixes fault stage treatment system for distribution network, includes alternating current distribution network end, direct current distribution network end and overall control monitor terminal, its characterized in that: the alternating current distribution network end and the direct current distribution network end are interacted, the alternating current distribution network end and the direct current distribution network end comprise a bidirectional energy storage module and an interconnection converter, the alternating current distribution network end comprises an alternating current frequency voltage module, the direct current distribution network end comprises a direct current frequency voltage module, the output ends of the alternating current distribution network end and the direct current distribution network end are connected with the input end of a network port distribution terminal, and the interconnection converter is connected with the power generation module in a bidirectional mode.
2. The fault grading processing system for the alternating current-direct current hybrid power distribution network according to claim 1, characterized in that: the power generation module comprises a photovoltaic power generation unit, a wind power generation unit and a hydraulic power generation unit.
3. The fault grading processing system for the alternating current-direct current hybrid power distribution network according to claim 1, characterized in that: the overall monitoring terminal comprises a power supply peak value unit, a hybrid testing module and an electric power self-checking unit.
4. The fault grading processing system for the AC-DC hybrid power distribution network according to claim 3, wherein: and the input end of the hybrid test module is connected with the output ends of the alternating current frequency voltage module and the direct current frequency voltage module.
5. The fault grading processing system for the AC-DC hybrid power distribution network according to claim 3, wherein: the input end of the power supply peak value unit is connected with the output end of the power comparison module, and the input end of the power self-checking unit is connected with the output end of the energy storage measuring and calculating module.
6. The fault grading processing system for the alternating current-direct current hybrid power distribution network according to claim 1, characterized in that: the output end of the overall monitoring terminal is connected with the input end of the microcomputer processing module, the microcomputer processing module comprises a primary fault connection end, a secondary fault connection end and a tertiary fault connection end, and the primary fault connection end, the secondary fault connection end and the tertiary fault connection end are connected with the fault isolation module in a two-way mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121222611.2U CN215817654U (en) | 2021-06-02 | 2021-06-02 | Fault grading processing system for AC/DC hybrid power distribution network |
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| CN202121222611.2U CN215817654U (en) | 2021-06-02 | 2021-06-02 | Fault grading processing system for AC/DC hybrid power distribution network |
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2021
- 2021-06-02 CN CN202121222611.2U patent/CN215817654U/en active Active
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