CN105203887A - Prewarning method, device and system for overload of transformer - Google Patents
Prewarning method, device and system for overload of transformer Download PDFInfo
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Abstract
The invention provides a prewarning method, device and system for overload of a transformer, and relates to the technical field of marketing system and distribution network communication for a power grid. The method comprises: monitoring voltage signals and current signals of a distribution network transformer in the power grid in real time, and determining real-time power; monitoring whether the real-time power is larger than a preset safety power threshold value; if so, generating prewarning information, uploading the prewarning information to an electricity consumption information acquisition system server, and enabling the electricity consumption information acquisition system server to transmit the prewarning information to a marketing service application system server and a production PMS2.0 system server; if the overload time is larger than a preset time threshold value, controlling a load protective circuit breaker in a path of the distribution network transformer to break the path of the distribution network transformer. The invention can solve the problems that a production PMS2.0 system is not communicated with a marketing system in the present power grid system, the load information of the distribution network transformer cannot be acquired, and overload prewarning and protection for the distribution network transformer cannot be realized in case of a distribution network failure.
Description
Technical field
The present invention relates to electrical network battalion and join through technical field, particularly relate to a kind of method, Apparatus and system of transformer overload early warning.
Background technology
Current, in order to reallocate resources further, the professional collaborative works such as unimpeded electrical network marketing, maintenance, promote that electrical network marketing, Yun Jiandeng department are formed in lifting customer service quality and make a concerted effort, State Grid Corporation of China is carrying out battalion and is joining connection project construction.It is join based on data acquisition and recording and improvement to carry out battalion that pass-through systems is joined by battalion, by carrying out adaptability reform to systems such as production, marketing, power grid GIS (GeographicInformationSystem), thus the business such as troublshooting/repairing, scheduled outage management can be supported, auxiliary distribution planning, the management of line loss lean, industry expand Integrated predict model such as automatically applying to install.
The systems such as production system, marketing system, power grid GIS through in, by setting up associating of the electrical network facilities information such as marketing account information and transformer station, circuit, transformer, build unified electrical network facilities model, client information model, basic data and topological relation, trans-departmental, multi-disciplinary data sharing and integrated services can be realized.
But; equipment (assets) O&M lean management system (PMS2.0 system) in network system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the protection of overload early-warning to network distribution transformer and network distribution transformer cannot be realized.
Summary of the invention
Embodiments of the invention provide a kind of method, Apparatus and system of transformer overload early warning; also not through with marketing system with equipment (assets) O&M lean management system (PMS2.0 system) solved in current electric grid system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
For achieving the above object, the present invention adopts following technical scheme:
A method for transformer overload early warning, comprising:
The voltage signal of the network distribution transformer in Real-Time Monitoring electrical network and current signal;
According to described voltage signal and current signal, determine the realtime power of described network distribution transformer;
Monitor described realtime power and whether be greater than a firm power threshold value pre-set;
If described realtime power is greater than described firm power threshold value, generate early warning information, and described early warning information is uploaded to power information acquisition system server, to make described power information acquisition system server, described early warning information is transferred to sales service application system server and production PMS2.0 system server;
Judge whether the overload time that described realtime power is greater than described firm power threshold value is greater than a time threshold pre-set;
If the described overload time is greater than described time threshold, network distribution transformer path disconnects by the load protective breaker controlled in described network distribution transformer path.
Further, the method for described transformer overload early warning, also comprises:
Described early warning information is stored in local data base.
Further, the method for described transformer overload early warning, also comprises:
From described early warning information, obtain the history peak power of network distribution transformer, current real power, and described history peak power and current real power are shown by a display circuit.
Concrete, described according to described voltage signal and current signal, determine the realtime power of described network distribution transformer, comprising:
Described voltage signal and described current signal are reduced respectively, a preset multiple of the current signal after being respectively the voltage signal after reducing to make described voltage signal and described current signal and reducing;
According to the voltage signal after reducing and the circuit signal after reducing, determine the realtime power of described network distribution transformer.
A device for transformer overload early warning, comprising:
First monitoring means, for voltage signal and the current signal of the network distribution transformer in Real-Time Monitoring electrical network;
Realtime power determining unit, for according to described voltage signal and current signal, determines the realtime power of described network distribution transformer;
Whether the second monitoring means, be greater than a firm power threshold value pre-set for monitoring described realtime power;
Prewarning unit, for when described realtime power is greater than described firm power threshold value, generate early warning information, and described early warning information is uploaded to power information acquisition system server, to make described power information acquisition system server, described early warning information is transferred to sales service application system server and production PMS2.0 system server;
Judging unit, for judging whether the overload time that described realtime power is greater than described firm power threshold value is greater than a time threshold pre-set;
Overload protection unit, for when the described overload time is greater than described time threshold, network distribution transformer path disconnects by the load protective breaker controlled in described network distribution transformer path.
Further, the device of described transformer overload early warning, also comprises:
Storage unit, for being stored in described early warning information in local data base.
Further, the device of described transformer overload early warning, also comprises:
Display unit, for obtaining the history peak power of network distribution transformer, current real power from described early warning information, and is shown described history peak power and current real power by a display circuit.
Concrete, described realtime power determining unit, comprising:
Signal reduces module, for described voltage signal and described current signal are reduced respectively, and a preset multiple of the current signal after being respectively the voltage signal after reducing to make described voltage signal and described current signal and reducing;
Realtime power determination module, the voltage signal after reducing for basis and the circuit signal after reducing, determine the realtime power of described network distribution transformer.
A system for transformer overload early warning, comprises signal acquisition circuit, Arithmetic Processing Chip circuit, power circuit, telecommunication circuit, load control device and power information acquisition system server, sales service application system server and produces PMS2.0 system server;
Described signal acquisition circuit one end is connected with network distribution transformer, the other end of described signal acquisition circuit is connected with Arithmetic Processing Chip circuit, with the voltage signal of the network distribution transformer gathered to Arithmetic Processing Chip circuit transmissioning signal Acquisition Circuit and current signal;
Described Arithmetic Processing Chip circuit is connected with described telecommunication circuit;
Described telecommunication circuit also connects described load control device and power information acquisition system server respectively;
Described power information acquisition system server also connects described load control device and described sales service application system server;
Described sales service application system server is also connected with described PMS2.0 system server of producing;
Described power circuit connects the power supply input interface of described signal acquisition circuit, Arithmetic Processing Chip circuit, telecommunication circuit and described load control device respectively, thinks that described signal acquisition circuit, Arithmetic Processing Chip circuit, telecommunication circuit and described load control device are powered.
Further, the system of described transformer overload early warning also comprises display circuit; Described display circuit is connected with described power circuit and described telecommunication circuit respectively.
The method of a kind of transformer overload early warning that the embodiment of the present invention provides, Apparatus and system, by determining the realtime power of network distribution transformer, thus when realtime power exceeds firm power threshold value, early warning information can be generated, and upload to power information acquisition system server, to make described power information acquisition system server, described early warning information is transferred to sales service application system server and production PMS2.0 system server, thus enable production PMS2.0 system server get the information on load of network distribution transformer in time, be convenient to produce PMS2.0 system server place and can obtain custom power abnormal conditions in time.And when the overload time is greater than the time threshold pre-set; network distribution transformer path disconnects by the load protective breaker controlled in described network distribution transformer path; thus make when distribution is broken down; the present invention can protect in time to network distribution transformer, avoids network distribution transformer overload and damages.Visible; equipment (assets) O&M lean management system (PMS2.0 system) that the present invention can solve in current electric grid system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The process flow diagram one of the method for a kind of transformer overload early warning that Fig. 1 provides for the embodiment of the present invention;
The flowchart 2 of the method for a kind of transformer overload early warning that Fig. 2 provides for the embodiment of the present invention;
The structural representation one of the device of a kind of transformer overload early warning that Fig. 3 provides for the embodiment of the present invention;
The structural representation two of the device of a kind of transformer overload early warning that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the system of a kind of transformer overload early warning that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of method of transformer overload early warning, comprising:
The voltage signal of the network distribution transformer in step 101, Real-Time Monitoring electrical network and current signal.
Step 102, according to voltage signal and current signal, determine the realtime power of network distribution transformer.
Whether step 103, monitoring realtime power are greater than a firm power threshold value pre-set.
If step 104 realtime power is greater than firm power threshold value, generate early warning information, and early warning information is uploaded to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server.
After production PMS2.0 system server acquires early warning information, alarm can be sent by production PMS2.0 system, thus carry out distribution repairing management and control for producing PMS2.0 system, and carry out breakdown judge, location, auxiliary PMS2.0 analyzes distribution transforming and analyzes user's abnormal conditions, supports production PMS2.0 system and carries out line loss analyzing calculating etc.
Step 105, judge whether the overload time that realtime power is greater than firm power threshold value is greater than a time threshold pre-set.
If the step 106 overload time is greater than time threshold, network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path.
The method of a kind of transformer overload early warning that the embodiment of the present invention provides, by determining the realtime power of network distribution transformer, thus when realtime power exceeds firm power threshold value, early warning information can be generated, and upload to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server, thus enable production PMS2.0 system server get the information on load of network distribution transformer in time, be convenient to produce PMS2.0 system server place and can obtain custom power abnormal conditions in time.And when the overload time is greater than the time threshold pre-set; network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path; thus make when distribution is broken down; the present invention can protect in time to network distribution transformer, avoids network distribution transformer overload and damages.Visible; equipment (assets) O&M lean management system (PMS2.0 system) that the present invention can solve in current electric grid system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
In order to make those skilled in the art better understand the present invention, enumerate an embodiment specifically below so that the present invention to be described, as shown in Figure 2, the embodiment of the present invention provides a kind of method of transformer overload early warning to comprise:
The voltage signal of the network distribution transformer in step 201, Real-Time Monitoring electrical network and current signal.
Step 202, voltage signal and current signal to be reduced respectively, with a preset multiple of the voltage signal after making voltage signal and current signal be respectively to reduce and the current signal after reducing.
Voltage signal and current signal are reduced respectively is in order to avoid large voltage and big current are to the infringement of whole load prior-warning device.
Voltage signal after step 203, basis reduce and the circuit signal after reducing, determine the realtime power of network distribution transformer.
Whether step 204, monitoring realtime power are greater than a firm power threshold value pre-set.
If realtime power is greater than firm power threshold value, perform step 205; If realtime power is less than or equal to firm power threshold value, returns and perform step 201.
Step 205, generation early warning information, early warning information is stored in local data base, and early warning information is uploaded to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server.
Step 206, the history peak power obtaining network distribution transformer from early warning information, current real power, and history peak power and current real power are shown by a display circuit.
Concrete, this display circuit can history run operating load record, such as history peak power, average power, historical low power etc., but be not only confined to this.
Step 207, judge whether the overload time that realtime power is greater than firm power threshold value is greater than a time threshold pre-set.
If the overload time is greater than time threshold, perform step 208; Otherwise, if the overload time is less than or equal to time threshold, return step 207 reclocking, to judge whether the overload time is greater than a time threshold pre-set.
Network distribution transformer path disconnects by step 208, the load protective breaker controlled in network distribution transformer path.
The method of a kind of transformer overload early warning that the embodiment of the present invention provides, by determining the realtime power of network distribution transformer, thus when realtime power exceeds firm power threshold value, early warning information can be generated, and upload to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server, thus enable production PMS2.0 system server get the information on load of network distribution transformer in time, be convenient to produce PMS2.0 system server place and can obtain custom power abnormal conditions in time.And when the overload time is greater than the time threshold pre-set; network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path; thus make when distribution is broken down; the present invention can protect in time to network distribution transformer, avoids network distribution transformer overload and damages.Visible; equipment (assets) O&M lean management system (PMS2.0 system) that the present invention can solve in current electric grid system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
Corresponding to the embodiment of the method for above-mentioned Fig. 1 and Fig. 2, as shown in Figure 3, the embodiment of the present invention also provides a kind of device of transformer overload early warning, comprising:
First monitoring means 31, can the voltage signal of network distribution transformer in Real-Time Monitoring electrical network and current signal.
Realtime power determining unit 32, the voltage signal can monitored according to the first monitoring means 31 and current signal, determine the realtime power of network distribution transformer.
Second monitoring means 33, can monitor the realtime power that realtime power determining unit 32 determines and whether be greater than a firm power threshold value pre-set.
Prewarning unit 34, can the second monitoring means 33 monitor realtime power be greater than firm power threshold value time, generate early warning information, and early warning information is uploaded to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server.
Judging unit 35, can judge whether the overload time that realtime power that the second monitoring means 33 monitors is greater than firm power threshold value is greater than a time threshold pre-set.
Overload protection unit 36, can judging unit 35 determine the overload time be greater than time threshold time, network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path.
Further, as shown in Figure 4, the device of this transformer overload early warning, also comprises:
Storage unit 37, can be stored in the early warning information that prewarning unit 34 generates in local data base.
Further, as shown in Figure 4, the device of this transformer overload early warning, also comprises:
Display unit 38, is obtained the history peak power of network distribution transformer, current real power the early warning information that can generate from prewarning unit 34, and history peak power and current real power is shown by a display circuit.
Concrete, as shown in Figure 4, this realtime power determining unit 32, can comprise:
Signal reduces module 321, voltage signal and current signal can be reduced respectively, with a preset multiple of the voltage signal after making voltage signal and current signal be respectively to reduce and the current signal after reducing.
Realtime power determination module 322, according to the voltage signal after reducing and the circuit signal after reducing, can determine the realtime power of network distribution transformer.
The device of a kind of transformer overload early warning that the embodiment of the present invention provides, by determining the realtime power of network distribution transformer, thus when realtime power exceeds firm power threshold value, early warning information can be generated, and upload to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server, thus enable production PMS2.0 system server get the information on load of network distribution transformer in time, be convenient to produce PMS2.0 system server place and can obtain custom power abnormal conditions in time.And when the overload time is greater than the time threshold pre-set; network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path; thus make when distribution is broken down; the present invention can protect in time to network distribution transformer, avoids network distribution transformer overload and damages.Visible; equipment (assets) O&M lean management system (PMS2.0 system) that the present invention can solve in current electric grid system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
Corresponding to above-mentioned embodiment of the method, the embodiment of the present invention also provides a kind of system of transformer overload early warning, as shown in Figure 5, comprise signal acquisition circuit 41, Arithmetic Processing Chip circuit 42, power circuit 43, telecommunication circuit 44, load control device 45 and power information acquisition system server 46, sales service application system server 47 and produce PMS2.0 system server 48.
Signal acquisition circuit 41 one end is connected with network distribution transformer 40, the other end of signal acquisition circuit 41 is connected with Arithmetic Processing Chip circuit 42, with the voltage signal of the network distribution transformer 40 gathered to Arithmetic Processing Chip circuit 42 signal transmission Acquisition Circuit 41 and current signal.Arithmetic Processing Chip circuit 42 is connected with telecommunication circuit 44.Telecommunication circuit 44 also distinguishes connected load control circuit 45 and power information acquisition system server 46.Power information acquisition system server 46 goes back connected load control circuit 45 and sales service application system server 47.Sales service application system server 47 is also connected with production PMS2.0 system server 48.
The power supply input interface of power circuit 43 difference connection signal Acquisition Circuit 41, Arithmetic Processing Chip circuit 42, telecommunication circuit 44 and load control device 45, thinks that signal acquisition circuit 41, Arithmetic Processing Chip circuit 42, telecommunication circuit 44 and load control device 45 are powered.
Further, as shown in Figure 5, the system of transformer overload early warning also comprises display circuit 49.Display circuit 49 is connected with power circuit 43 and telecommunication circuit 44 respectively.
What deserves to be explained is, signal acquisition circuit 41 comprises voltage transformer (VT) summation current transformer, can gather above-mentioned voltage signal and current signal respectively, and voltage signal and current signal are reduced respectively by voltage transformer (VT) summation current transformer.
Voltage signal and current signal can be converted to digital signal by inner A/D converter by this Arithmetic Processing Chip circuit 42, then carry out power calculation by inner digital multiplier.Digital multiplier is the accuracy that can ensure to measure in the gamut that power factor is 0 ~ 1 compared to the advantage of analog multiplier.Select high-precision A/D converter, sampling time interval is less, and the accuracy of voltage, current measurement is higher, and power computation is also more accurate.In addition, according to digital multiplier principle of work, can also measuring voltage, electric current, phase place, frequency, forward and reverse active power and four-quadrant reactive power etc.
In addition, telecommunication circuit 44 can be configured with storer, and this locality completing the contents such as transformer load data, overload early-warning information, tripping operation information stores.In addition, this telecommunication circuit 44 can configure conventional communication interface, comprise optical fiber interface, network interface, RS-485 interface, RS-232 interface, expanding USB interface etc., completed uploading of the contents such as transformer load data, overload early-warning information, tripping operation information by communication interface.
In addition, load control device 45 can be made up of the proterctive equipment such as switch, isolating switch.
The system of a kind of transformer overload early warning that the embodiment of the present invention provides, by determining the realtime power of network distribution transformer, thus when realtime power exceeds firm power threshold value, early warning information can be generated, and upload to power information acquisition system server, to make power information acquisition system server, early warning information is transferred to sales service application system server and production PMS2.0 system server, thus enable production PMS2.0 system server get the information on load of network distribution transformer in time, be convenient to produce PMS2.0 system server place and can obtain custom power abnormal conditions in time.And when the overload time is greater than the time threshold pre-set; network distribution transformer path disconnects by the load protective breaker controlled in network distribution transformer path; thus make when distribution is broken down; the present invention can protect in time to network distribution transformer, avoids network distribution transformer overload and damages.Visible; equipment (assets) O&M lean management system (PMS2.0 system) that the present invention can solve in current electric grid system is also not through with marketing system; the information on load of network distribution transformer can not be got; when distribution is broken down, the problem to the overload early-warning of network distribution transformer and the protection of network distribution transformer cannot be realized.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a method for transformer overload early warning, is characterized in that, comprising:
The voltage signal of the network distribution transformer in Real-Time Monitoring electrical network and current signal;
According to described voltage signal and current signal, determine the realtime power of described network distribution transformer;
Monitor described realtime power and whether be greater than a firm power threshold value pre-set;
If described realtime power is greater than described firm power threshold value, generate early warning information, and described early warning information is uploaded to power information acquisition system server, to make described power information acquisition system server, described early warning information is transferred to sales service application system server and production PMS2.0 system server;
Judge whether the overload time that described realtime power is greater than described firm power threshold value is greater than a time threshold pre-set;
If the described overload time is greater than described time threshold, network distribution transformer path disconnects by the load protective breaker controlled in described network distribution transformer path.
2. the method for transformer overload early warning according to claim 1, is characterized in that, the method for described transformer overload early warning, also comprises:
Described early warning information is stored in local data base.
3. the method for transformer overload early warning according to claim 2, is characterized in that, the method for described transformer overload early warning, also comprises:
From described early warning information, obtain the history peak power of network distribution transformer, current real power, and described history peak power and current real power are shown by a display circuit.
4. the method for transformer overload early warning according to claim 1, is characterized in that, described according to described voltage signal and current signal, determines the realtime power of described network distribution transformer, comprising:
Described voltage signal and described current signal are reduced respectively, a preset multiple of the current signal after being respectively the voltage signal after reducing to make described voltage signal and described current signal and reducing;
According to the voltage signal after reducing and the circuit signal after reducing, determine the realtime power of described network distribution transformer.
5. a device for transformer overload early warning, is characterized in that, comprising:
First monitoring means, for voltage signal and the current signal of the network distribution transformer in Real-Time Monitoring electrical network;
Realtime power determining unit, for according to described voltage signal and current signal, determines the realtime power of described network distribution transformer;
Whether the second monitoring means, be greater than a firm power threshold value pre-set for monitoring described realtime power;
Prewarning unit, for when described realtime power is greater than described firm power threshold value, generate early warning information, and described early warning information is uploaded to power information acquisition system server, to make described power information acquisition system server, described early warning information is transferred to sales service application system server and production PMS2.0 system server;
Judging unit, for judging whether the overload time that described realtime power is greater than described firm power threshold value is greater than a time threshold pre-set;
Overload protection unit, for when the described overload time is greater than described time threshold, network distribution transformer path disconnects by the load protective breaker controlled in described network distribution transformer path.
6. the device of transformer overload early warning according to claim 5, is characterized in that, the device of described transformer overload early warning, also comprises:
Storage unit, for being stored in described early warning information in local data base.
7. the device of transformer overload early warning according to claim 6, is characterized in that, the device of described transformer overload early warning, also comprises:
Display unit, for obtaining the history peak power of network distribution transformer, current real power from described early warning information, and is shown described history peak power and current real power by a display circuit.
8. the device of transformer overload early warning according to claim 5, is characterized in that, described realtime power determining unit, comprising:
Signal reduces module, for described voltage signal and described current signal are reduced respectively, and a preset multiple of the current signal after being respectively the voltage signal after reducing to make described voltage signal and described current signal and reducing;
Realtime power determination module, the voltage signal after reducing for basis and the circuit signal after reducing, determine the realtime power of described network distribution transformer.
9. the system of a transformer overload early warning, it is characterized in that, comprise signal acquisition circuit, Arithmetic Processing Chip circuit, power circuit, telecommunication circuit, load control device and power information acquisition system server, sales service application system server and produce PMS2.0 system server;
Described signal acquisition circuit one end is connected with network distribution transformer, the other end of described signal acquisition circuit is connected with Arithmetic Processing Chip circuit, with the voltage signal of the network distribution transformer gathered to Arithmetic Processing Chip circuit transmissioning signal Acquisition Circuit and current signal;
Described Arithmetic Processing Chip circuit is connected with described telecommunication circuit;
Described telecommunication circuit also connects described load control device and power information acquisition system server respectively;
Described power information acquisition system server also connects described load control device and described sales service application system server;
Described sales service application system server is also connected with described PMS2.0 system server of producing;
Described power circuit connects the power supply input interface of described signal acquisition circuit, Arithmetic Processing Chip circuit, telecommunication circuit and described load control device respectively, thinks that described signal acquisition circuit, Arithmetic Processing Chip circuit, telecommunication circuit and described load control device are powered.
10. the system of transformer overload early warning according to claim 9, is characterized in that, the system of described transformer overload early warning also comprises display circuit; Described display circuit is connected with described power circuit and described telecommunication circuit respectively.
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| CN201510683334.8A CN105203887A (en) | 2015-10-20 | 2015-10-20 | Prewarning method, device and system for overload of transformer |
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| CN201510683334.8A CN105203887A (en) | 2015-10-20 | 2015-10-20 | Prewarning method, device and system for overload of transformer |
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| CN109444576A (en) * | 2018-10-24 | 2019-03-08 | 国网河南省电力公司濮阳供电公司 | A kind of more transformer operation state monitoring devices |
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