CN111416434A - Distribution network load online monitoring system and method - Google Patents
Distribution network load online monitoring system and method Download PDFInfo
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- CN111416434A CN111416434A CN202010070848.7A CN202010070848A CN111416434A CN 111416434 A CN111416434 A CN 111416434A CN 202010070848 A CN202010070848 A CN 202010070848A CN 111416434 A CN111416434 A CN 111416434A
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Abstract
The invention discloses a distribution network load online monitoring system and a method, comprising the following steps: the system comprises branch power sensors, a main power sensor, an environment temperature sensor, a distribution network GIS information module, a concentrator, an analysis module and a display module, wherein the branch power sensors are distributed and installed on branch lines and used for collecting power information of the branch lines of a distribution network, the branch power sensors are connected with the concentrator, the main power sensor is installed on the distribution network main line and used for collecting power information of the distribution network main line, the main power sensor is connected with the concentrator, the environment temperature sensor is installed at a junction of the branch lines and used for collecting environment temperature information of the lines, the environment temperature sensor and the concentrator are connected with the analysis module, and the analysis module is respectively connected with the distribution network GIS information module and the display module. The distribution network load condition is comprehensively monitored through the branch power sensor and the main power sensor, and workers can monitor the distribution network load at any time and any place in real time through the APP.
Description
Technical Field
The invention relates to the technical field of distribution network monitoring, in particular to a distribution network load online monitoring system and a distribution network load online monitoring method.
Background
In recent years, although the investment of a power distribution network is gradually increased, the problems of poor foundation, complex topology, roundabout cross power supply and the like of the power distribution network cannot be changed in a short period. Especially, the problems of rural public power distribution areas are more, the quality of electric energy of a resident user side is seriously restricted, and the service level is influenced. At present, a low-voltage transformer area in a power grid company jurisdiction only has data monitoring on a distribution transformer, and monitoring acquisition and asset management on full-state information of low-voltage access equipment in the whole transformer area are lacked. The low-voltage distribution network from the transformer outlet to the user meter is in a monitoring blind area, the management and operation and maintenance unit does not master the operation condition of low-voltage equipment and the distribution and characteristics of low-voltage loads, and once a problem occurs, the low-voltage equipment can only be manually checked, so that time and labor are wasted. Meanwhile, once a branch line of the distribution network fails, troubleshooting is difficult to achieve, the line is easy to damage, emergency treatment cannot be achieved at the first time of failure, and loss caused by the failure is increased. Therefore, a distribution network load online monitoring system is needed to monitor the load state of a distribution network in real time.
For example, a "voltage monitoring data platform" disclosed in chinese patent literature, whose publication number CN106557991A, whose publication date is 2017, 04, 05, includes a voltage monitoring system, a big data platform and a relational database, where the big data platform is used to collect voltage data of a metering automation system, a dispatching automation system and a voltage detector and transmit the voltage data to the voltage monitoring system through corresponding interfaces for processing; the relational database is used for acquiring relational data between the voltage of the power marketing system, the distribution network production system, the distribution network GIS platform and the data resource system and other parameters and transmitting the relational data to the voltage monitoring system through corresponding interfaces; and the voltage monitoring system monitors and evaluates the voltage according to the data transmitted by the big data platform and the relational database. The voltage of the distribution network line is monitored through the voltage monitoring system, but the data platform only monitors the voltage, the line of the distribution network cannot be effectively monitored, meanwhile, emergency measures when the distribution network line breaks down do not exist, the monitoring platform does not have APP, and the monitoring platform is inconvenient for workers to monitor the voltage of the distribution network load state in real time.
Disclosure of Invention
The invention mainly solves the problem that the load state of the distribution network can not be monitored in real time in the prior art; the distribution network load online monitoring system and method are provided, the distribution network load state is monitored in real time, faults occurring in a distribution network are effectively emergent, loss is reduced, and the cost of a power grid is reduced.
The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a join in marriage net load on-line monitoring system, includes branch power sensor, main power sensor, ambient temperature sensor, joins in marriage net GIS information module, concentrator, analysis module and display module, branch power sensor distributes and installs on each branch line for gather the power information who joins in marriage each branch line of net, branch power sensor is connected with the concentrator, main power sensor installs on joining in marriage net main line for gather the power information who joins in marriage net main line, main power sensor is connected with the concentrator, ambient temperature sensor installs at branch line junction for gather the ambient temperature information of circuit, ambient temperature sensor and concentrator all are connected with analysis module, analysis module is connected with joining in marriage net GIS information module and display module respectively. The load condition of a branch line of a distribution network is collected through a branch sensor, the load condition of a main line collected by a main power sensor is combined, the total load sum of the branch line is compared with the load quantity of the main line, whether the distribution network is in fault or not is judged, the geographical position of the distribution network is inquired through a distribution network GIS information module, a proper distribution power sensor and a proper main power sensor installation node are selected, the installation positions of the distribution power sensor and the main power sensor are clear, the monitoring and the analysis of the distribution network state are convenient, the collected data and the analysis result are sent to a display module after the intelligent analysis is carried out through an analysis module, and a worker can realize the real-time monitoring of the distribution network load condition through the display module.
Preferably, the analysis module further comprises branch line switches and a switch control circuit, wherein the branch line switches are distributed and installed in each branch line, the control ends of the branch line switches are connected with the switch control circuit, and the switch control circuit is connected with the analysis module. When the analysis module analyzes that a certain branch line has a fault, the analysis module sends an instruction to the switch control circuit to enable the switch control circuit to control the switch of the branch line to be switched off, so that the branch line is switched off, the fault is subjected to emergency treatment, the situation that the electric wire is burnt or circuit electric appliances are damaged due to resistance heating after the fault occurs is prevented, the loss is reduced, and the safety of equipment and personnel is effectively protected.
Preferably, the system further comprises a plurality of timers and a wireless communication module, the plurality of timers are respectively installed on the sub-power sensor and the main power sensor, the wireless communication module adopts a BC26 wireless communication module, the plurality of timers are all connected with the analysis module through a BC26 wireless communication module, and the ambient temperature sensor is connected with the analysis module through a BC26 wireless communication module. The communication between the ambient temperature sensor and the timer and the analysis module is carried out through the BC26 wireless communication module, when information transmitted by the sub-power sensor and the main power sensor is normal, the communication of the BC26 communication module is closed, the timer and the ambient temperature sensor do not work, the loss of electric energy is reduced, when load abnormality is received, the communication of the BC26 wireless communication module is opened, the timer and the ambient temperature sensor work, and data are transmitted to the analysis module to carry out comprehensive fault analysis.
Preferably, the display module include remove end display module and PC end display module, remove end display module including removing end carrier and APP, the electric wire netting staff uses to remove end display module control electric wire netting load state through downloading the APP. Through the combination of the mobile terminal display module and the PC terminal display module, the working personnel can conveniently monitor the load condition of the power grid at any time and any place, and the real-time monitoring of the load of the power grid is realized.
Preferably, the sub-power sensor comprises a first signal probe, a second signal probe, a third signal probe and a power indicator, wherein the collection end of the first signal probe is connected to one side of a node of the main line and the branch line, which is close to the branch line, the collection end of the second signal probe is connected to the middle end of the branch line, the collection end of the third signal probe is connected to the tail end of the branch line, the first signal probe, the second signal probe and the third signal probe are all connected with the input end of the power indicator, and the output end of the power indicator is connected with the concentrator. The first signal probe, the second signal probe and the third signal probe are used for detecting different end lines of the branch line, faults can be better checked, and the load monitoring of the distribution network is more comprehensive.
The invention also provides a distribution network load online monitoring method, which comprises the following steps: step s 1: the analysis module acquires distribution network geographic information of the distribution network GIS information module, and a sub-power sensor is installed according to the distribution network geographic information; step s 2: recording the installation position of each sub-power sensor, and numbering each sub-power sensor; step s 3: acquiring power information transmitted by a sub-power sensor and a main power sensor; step s 4: acquiring timing information of a timer and environmental temperature information of an environmental temperature sensor; step s 5: and judging whether to cut off the branch line or not according to the power information, the timing information and the environment temperature information.
Preferably, in step s4, before the timing information and the ambient temperature information are acquired, a branch line power threshold is set, the power information collected by the branch power sensor is compared with the set power threshold, if the power information is between the power thresholds, the BC26 wireless communication module is not activated, the power information is displayed by the display module, if the power information exceeds the power threshold, it is determined which branch line power information exceeds the power threshold based on the number information, the BC26 wireless communication module of the branch line is activated, communication is generated between the timer and the ambient temperature sensor and the analysis module, and the analysis module receives the timing information of the timer and the ambient temperature information of the ambient temperature sensor.
Preferably, in step s5, a time threshold and a temperature threshold are set, the acquired timing information is compared with the time threshold, the acquired environmental temperature information is compared with the temperature threshold, if the timing information does not exceed the time threshold and the environmental temperature information does not exceed the temperature threshold, no command is sent to the switch control circuit, otherwise, a command is sent to the switch control circuit to switch off the branch line switch, so that the branch line with the fault is switched off, and the fault information is displayed in real time through the display module.
The invention has the beneficial effects that: (1) the distribution network load condition is comprehensively monitored through the branch power sensor and the main power sensor, and workers can monitor the distribution network load at any time and any place in real time through the APP; (2) through the BC26 wireless communication module, the energy loss is reduced, and the cost is effectively saved; (3) through branch line switch, make emergent reaction to the trouble of branch line, reduce the loss that the trouble caused, effective protection equipment and personnel's safety.
Drawings
Fig. 1 is a schematic structural diagram of a distribution network load online monitoring system according to a first embodiment.
Fig. 2 is a flow chart of a distribution network load online monitoring method according to the first embodiment.
In the figure, 1 is an analysis module, 2 is a concentrator, 3 is a main power sensor, 4 is a branch power sensor, 5 is a distribution network GIS information module, 6 is a timer, and 7 is an environmental temperature sensor.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The first embodiment is as follows: a distribution network load on-line monitoring system is shown in figure 1 and comprises a branch power sensor 4, a main power sensor 3, an ambient temperature sensor 7, a distribution network GIS information module 5, a concentrator 2, an analysis module 1, a display module, branch line switches, a switch control circuit, a plurality of timers 6 and a wireless communication module, wherein the branch power sensor 4 is distributed and installed on each branch line and used for collecting power information of each branch line of a distribution network, the branch power sensor 4 is connected with the concentrator 2, the main power sensor 3 is installed on a distribution network main line and used for collecting power information of the distribution network main line, the main power sensor 3 is connected with the concentrator 2, the ambient temperature sensor 7 is installed at a junction of the branch lines and used for collecting ambient temperature information of the branch lines, and the ambient temperature sensor 7 and the concentrator 2 are both connected with the analysis module 1, the analysis module 1 is connected with distribution network GIS information module 5 and display module respectively, branch line switch distribution is installed in each branch line, branch line switch's control end and switch control circuit are connected, switch control circuit is connected with analysis module 1, a plurality of time-recorder 6 is installed respectively on branch power sensor 4 and main power sensor 3, wireless communication module adopts BC26 wireless communication module, a plurality of time-recorder 6 all is connected with analysis module 1 through BC26 wireless communication module, ambient temperature sensor 7 is connected with analysis module 1 through BC26 wireless communication module.
The display module is including removing end display module and PC end display module, removes end display module and includes removing end carrier and APP, and the electric wire netting staff uses to remove end display module control electric wire netting load state through downloading the APP.
The sub-power sensor 4 comprises a first signal probe, a second signal probe, a third signal probe and a power indicator, wherein the acquisition end of the first signal probe is connected to one side, close to the branch line, of a node of the main line and the branch line, the acquisition end of the second signal probe is connected to the middle end of the branch line, the acquisition end of the third signal probe is connected to the tail end of the branch line, the first signal probe, the second signal probe and the third signal probe are all connected with the input end of the power indicator, and the output end of the power indicator is connected with the concentrator 2.
In the specific application, before installing the branch power sensors 4 and the main power sensors 3, the analysis module 1 inquires the distribution network geographic information through the distribution network GIS information module 5, marks the installation positions of the branch power sensors 4 and the main power sensors 3, numbers the branch power sensors 4 and the main power sensors 3, corresponds the numbers and the marks one by one, then correspondingly installs the branch power sensors 4 and the main power sensors 3 at the marked positions according to the marks, simultaneously installs the first signal probe, the second signal probe and the third signal probe of the branch power sensors 4, enables the branch power sensors 4 to detect distribution network load information of different positions of branch lines, transmits the detected information to the concentrator 2, and transmits the information transmitted by the branch power sensors 4 and the main power sensors 3 to the analysis module 1 after the information is uniformly arranged, the analysis module 1 carries out intelligent analysis according to the received information and judges whether the load of the distribution network fluctuates, if the abnormal fluctuation occurs, the BC26 wireless communication module is started, the information from the timer 6 and the ambient temperature sensor 7 is received, the information of the timer 6 and the ambient temperature sensor 7 is combined to further judge whether the branch line has a fault, if the branch line has the fault, the switch control circuit controls the switch of the branch line to be switched off by sending an instruction to the switch control circuit, the branch line is switched off, the equipment of the fault circuit and the personnel safety near the equipment are protected, and effective emergency measures are taken for the fault.
As shown in fig. 2, a distribution network load online monitoring method includes the following steps: step s 1: the analysis module 1 acquires distribution network geographic information of the distribution network GIS information module 5, and a sub-power sensor 4 is installed according to the distribution network geographic information; step s 2: recording the installation position of each sub-power sensor 4, and numbering each sub-power sensor 4; step s 3: the power information delivered by the branch power sensor 4 and the main power sensor 3 is acquired.
Step s 4: acquiring timing information of a timer 6 and environmental temperature information of an environmental temperature sensor 7; before acquiring the timing information and the environment temperature information, a branch line power threshold value is set, the power information acquired by the branch power sensor 4 is compared with the set power threshold value, if the power information is between the power threshold values, the BC26 wireless communication module is not started, the power information is displayed through the display module, if the power information exceeds the power threshold value, the power information of which branch line exceeds the power threshold value is judged according to the number information, the BC26 wireless communication module of the branch line is started, communication is generated between the timer 6 and the environment temperature sensor 7 and the analysis module 1, and the analysis module 1 receives the timing information of the timer 6 and the environment temperature information of the environment temperature sensor 7.
Step s 5: judging whether to cut off the branch line or not according to the power information, the timing information and the environment temperature information; setting a time threshold and a temperature threshold, comparing the acquired timing information with the time threshold, comparing the acquired environment temperature information with the temperature threshold, if the timing information does not exceed the time threshold and the environment temperature information does not exceed the temperature threshold, not sending an instruction to the switch control circuit, otherwise, sending an instruction to the switch control circuit, disconnecting the branch line switch, disconnecting the branch line with the fault, and displaying the fault information in real time through the display module.
The distribution network load condition is comprehensively monitored through the branch power sensor 4 and the main power sensor 3, and workers can monitor the distribution network load at any time and any place through APP; through the BC26 wireless communication module, the energy loss is reduced, and the cost is effectively saved; through branch line switch, make emergent reaction to the trouble of branch line, reduce the loss that the trouble caused, effective protection equipment and personnel's safety.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (8)
1. A distribution network load on-line monitoring system comprises
The power distribution network GIS information module comprises branch power sensors, a main power sensor, an environment temperature sensor, a distribution network GIS information module, a concentrator, an analysis module and a display module, wherein the branch power sensors are distributed and installed on branch lines and used for collecting power information of the distribution network branch lines, the branch power sensors are connected with the concentrator, the main power sensor is installed on the distribution network main line and used for collecting power information of the distribution network main line, the main power sensor is connected with the concentrator, the environment temperature sensor is installed at a junction of the branch lines and used for collecting environment temperature information of the lines, the environment temperature sensor and the concentrator are connected with the analysis module, and the analysis module is respectively connected with the distribution network GIS information module and the display module.
2. The online monitoring system for the load of the distribution network according to claim 1, further comprising branch line switches and a switch control circuit, wherein the branch line switches are distributed and installed in each branch line, the control ends of the branch line switches are connected with the switch control circuit, and the switch control circuit is connected with the analysis module.
3. The on-line monitoring system for the distribution network load according to claim 1, further comprising a plurality of timers and a wireless communication module, wherein the plurality of timers are respectively installed on the branch power sensor and the main power sensor, the wireless communication module adopts a BC26 wireless communication module, the plurality of timers are all connected with the analysis module through a BC26 wireless communication module, and the ambient temperature sensor is connected with the analysis module through a BC26 wireless communication module.
4. The distribution network load online monitoring system of claim 1, wherein the display module comprises a mobile terminal display module and a PC terminal display module, the mobile terminal display module comprises a mobile terminal carrier and an APP, and a power grid worker monitors the load state of the power grid by downloading the APP through the mobile terminal display module.
5. The online monitoring system for the load of the distribution network according to claim 1, wherein the branch power sensor comprises a first signal probe, a second signal probe, a third signal probe and a power indicator, wherein a collection end of the first signal probe is connected to a side of a node of the main line and the branch line, which is close to the branch line, a collection end of the second signal probe is connected to a middle end of the branch line, a collection end of the third signal probe is connected to a tail end of the branch line, the first signal probe, the second signal probe and the third signal probe are all connected to an input end of the power indicator, and an output end of the power indicator is connected to the concentrator.
6. A distribution network load online monitoring method, which is applied to the distribution network load online monitoring system according to any one of claims 1 to 5, and comprises the following steps:
step s 1: the analysis module acquires distribution network geographic information of the distribution network GIS information module, and a sub-power sensor is installed according to the distribution network geographic information;
step s 2: recording the installation position of each sub-power sensor, and numbering each sub-power sensor;
step s 3: acquiring power information transmitted by a sub-power sensor and a main power sensor;
step s 4: acquiring timing information of a timer and environmental temperature information of an environmental temperature sensor;
step s 5: and judging whether to cut off the branch line or not according to the power information, the timing information and the environment temperature information.
7. The method for online monitoring of distribution network load according to claim 6, wherein in step s4, before obtaining the timing information and the ambient temperature information, a power threshold of a branch line is set, the power information collected by the branch power sensor is compared with the set power threshold, if the power information is between the power thresholds, the BC26 wireless communication module is not started, the power information is displayed by the display module, if the power information exceeds the power threshold, it is determined according to the number information which power information of the branch line exceeds the power threshold, the BC26 wireless communication module of the branch line is started, communication is generated between the timer and the ambient temperature sensor as well as the analysis module, and the analysis module receives the timing information of the timer and the ambient temperature information of the ambient temperature sensor.
8. The method according to claim 6, wherein in step s5, a time threshold and a temperature threshold are set, the acquired timing information is compared with the time threshold, the acquired environmental temperature information is compared with the temperature threshold, if the timing information does not exceed the time threshold and the environmental temperature information does not exceed the temperature threshold, no command is sent to the switch control circuit, otherwise, a command is sent to the switch control circuit to switch off the branch line switch, so that the branch line with the fault is switched off, and the fault information is displayed in real time through the display module.
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| CN202010070848.7A CN111416434A (en) | 2020-01-21 | 2020-01-21 | Distribution network load online monitoring system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865306A (en) * | 2021-01-12 | 2021-05-28 | 浙江华云信息科技有限公司 | Electric power monitored control system based on thing networking |
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| CN109242213A (en) * | 2018-10-18 | 2019-01-18 | 国网山东省电力公司应急管理中心 | A kind of fine early warning system of GIS power grid based on rate of load condensate statistics |
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- 2020-01-21 CN CN202010070848.7A patent/CN111416434A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103904918A (en) * | 2014-03-05 | 2014-07-02 | 象山元明光电科技有限公司 | Multi-channel self-adaptive power balance output 50 V direct current power source and power control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112865306A (en) * | 2021-01-12 | 2021-05-28 | 浙江华云信息科技有限公司 | Electric power monitored control system based on thing networking |
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