CN110736890A - distribution network data safety early warning system - Google Patents
distribution network data safety early warning system Download PDFInfo
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- CN110736890A CN110736890A CN201911054274.8A CN201911054274A CN110736890A CN 110736890 A CN110736890 A CN 110736890A CN 201911054274 A CN201911054274 A CN 201911054274A CN 110736890 A CN110736890 A CN 110736890A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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Abstract
The invention discloses an power distribution network data safety early warning system which comprises a voltage acquisition circuit, a second voltage acquisition circuit, a delay comparison circuit and a filtering and transmitting circuit, wherein the voltage acquisition circuit acquires power distribution network main node data signal voltage, the second voltage acquisition circuit acquires power distribution network branch node data signal voltage, a delay circuit consisting of a triode Q5 and a capacitor C4 is used for delaying output signals of the second voltage acquisition circuit, an average value signal is screened out by an average value circuit consisting of an operational amplifier AR3, an operational amplifier AR4, a diode D8 and a diode D9 and is input into an inverse input end of an operational amplifier AR5, the operational amplifier AR5 performs subtraction processing on the signals, and finally the operational amplifier AR6 compares the signals and inputs the signals into the filtering and transmitting circuit which consists of an inductor L1, a capacitor C6 and a capacitor C7 and transmits the signals into a power distribution network early warning module through a signal transmitter E1, so that the effect of improving the data safety early warning is achieved.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to an power distribution network data safety early warning system.
Background
At present, a power distribution network data management system mainly uses data signal security encryption of a main node and subordinate branch nodes to realize data security protection, however, since the subordinate branch nodes are distributed in each county or town and are data processors of the power distribution network of each county or town, the main node receives data of each branch node, the main node is a control management terminal of the power distribution network, and data signals of the branch nodes are guaranteed not to be leaked by external factors, but also are guaranteed to be tampered by internal employees, according to power grid data security protection method and distributed grid data security protection system disclosed by prior art patent No. 201811250464.2, leaves data traces after each data signal tampering, namely, the amount of the data signals is increased, when the amount of the data signals is increased, carrier power of the data signals is correspondingly increased, the prior art discloses a technology for preventing data signals from being leaked by external factors, and does not consider the factor for internal employees to data signals.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide power distribution network data safety early warning systems, which can detect the voltage of the power distribution network master node and the demarcation point data signal in real time, and convert the detection signal into a power distribution network data safety early warning signal after comparing and adjusting the detection signal.
The technical scheme includes that the distribution network data safety early warning system comprises a voltage acquisition circuit, a second voltage acquisition circuit, a delay comparison circuit and a filtering and transmitting circuit, wherein the voltage acquisition circuit acquires distribution network master node data signal voltage, the second voltage acquisition circuit acquires distribution network node data signal voltage, the delay comparison circuit uses an operational amplifier AR1, an operational amplifier AR2 and a diode D5-diode D7 to form a peak detection circuit, a peak signal of an output signal of an voltage acquisition circuit is screened and input into an in-phase input end of an operational amplifier AR5, a time delay circuit is formed by a triode Q5 and a capacitor C5 to delay an output signal of the second voltage acquisition circuit, the operational amplifier AR5, the diode D5 and the diode D5 form an average value circuit, the average value signal is screened and input into an anti-phase input end of the operational amplifier AR5, the operational amplifier AR5 performs subtraction processing on the signal, wherein the operational amplifier AR5 detects an input end of the operational amplifier AR5, the anti-phase signal output end of the operational amplifier AR5, the operational amplifier AR 72 and the potential difference signal is fed back to an in-phase input end of the filter circuit of the AR5, the operational amplifier 5, the potential difference signal is fed back to the in the filter circuit, and the potential difference signal is fed back to the filter circuit, the post-phase signal of the filter 5, the filter circuit, the operational amplifier 5, and the potential difference signal is fed back to the post-phase difference detection.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. a triode Q5 and a capacitor C4 are used for forming a delay circuit to delay the output signal of the second voltage acquisition circuit, the signal is delayed and processed, the signal synchronism is ensured, an average value circuit consisting of an operational amplifier AR3, an operational amplifier AR4, a diode D8 and a diode D9 is used for screening out an average value signal and inputting the average value signal into an inverting input end of an operational amplifier AR5, when the data signal is modified, the data potentials of a main node and a branch node are not very large, so that the potential difference between the main node and the branch node needs to be enlarged, the main node is a peak value signal, the branch node is an average value signal, the potential difference between the main node and the branch node can be enlarged in a step, the safety precision of the judgment;
2. the triode Q6 detects the potential difference of the output signals of the operational amplifier AR4 and the operational amplifier AR1, a feedback signal is fed back into the reverse phase input end of the operational amplifier AR6, the situation that the potential difference of the output signals of the operational amplifier AR6 is too large and the circuit is damaged is prevented, the potential difference of the output signals of the operational amplifier AR5 and the operational amplifier AR4 is detected by the triode Q7, the situation that the potential difference of the two is too small is avoided, and the signal is misjudged, therefore, the feedback signal is fed back into the in-phase input end of the operational amplifier AR2 and plays a role in compensating the signal, finally, the signal is sent to the distribution network early warning module through the signal transmitter E1 after being filtered by the filter circuit formed by the inductor L1, the capacitor C6 and the capacitor C7, when the data signal amount is abnormal, the signal transmitter E1 sends a signal.
Drawings
Fig. 1 is a circuit diagram of a delay comparison circuit of power distribution network data safety early warning systems according to the invention.
Fig. 2 is a circuit diagram of voltage acquisition of power distribution network data safety pre-warning systems according to the present invention.
Fig. 3 is a second voltage acquisition circuit diagram of power distribution network data safety early warning systems according to the present invention.
Fig. 4 is a filter transmission circuit diagram of power distribution network data safety early warning systems according to the invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 4. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
a power distribution network data safety warning system, which includes voltage acquisition circuit, a second voltage acquisition circuit, a delay comparison circuit and a filtering emission circuit, where the voltage acquisition circuit acquires data signal voltage of a power distribution network master node, the second voltage acquisition circuit acquires data signal voltage of power distribution network nodes, the delay comparison circuit uses an operational amplifier AR1, an operational amplifier AR2 and a diode D5-diode D7 to form a peak detection circuit, filters a peak signal of an output signal of the voltage acquisition circuit and inputs the peak signal into an in-phase input terminal of the operational amplifier AR5, and uses a triode Q5 and a capacitor C5 to form a delay circuit to delay an output signal of the second voltage acquisition circuit, and the operational amplifier AR5, the operational amplifier AR D5 and the diode D5 form an average value circuit to filter an average value signal input terminal AR of the operational amplifier AR5, the operational amplifier AR5 performs subtraction processing on the signal, where the triode Q5 detects an input terminal of the operational amplifier AR 72 and an output signal of the operational amplifier AR5, feeds back to the AR5, the in-phase signal, the operational amplifier AR5 and the in-phase difference signal detection circuit feeds back to the in-phase-filtering emission circuit, and the filter 5, and outputs a potential difference signal to the filter 5, and outputs a potential difference signal through the filter circuit after the capacitor C5 and the filter circuit, the filter 5 and the filter 5;
the delay comparison circuit uses an operational amplifier AR1, an operational amplifier AR2 and a diode D5-diode D7 to form a peak detection circuit, a peak signal of an output signal of a screened th voltage acquisition circuit is input into an in-phase input end of an operational amplifier AR5, a time delay circuit formed by a triode Q5 and a capacitor C4 is used for delaying an output signal of a second voltage acquisition circuit, the signal is delayed to ensure the synchronism of the signal, an average value circuit formed by an operational amplifier AR3, an operational amplifier AR4, a diode D8 and a diode D9 is used for screening an average value signal to be input into an anti-phase input end of the operational amplifier AR5, when the data signal is modified, the data potentials of a main node and a branch node are not very large, so that the potential difference between the main node and the operational amplifier AR4 needs to be enlarged, the main node is a peak signal, the branch node is a small average value signal, the potential difference between the main node and the branch node can be enlarged by steps of the AR , so that the safety precision of the judgment signal is improved, the AR5 performs subtraction processing on the signal, wherein a triode Q6 detects the input end of the operational amplifier AR4 input end and the anti-phase difference of the operational amplifier AR2, the anti-phase signal, the operational amplifier outputs a potential difference signal, and the AR 8653, and the auto-phase difference compensation circuit, and the auto-phase difference;
in the specific structure of the time-delay comparison circuit, an inverting input terminal of an operational amplifier AR1 is connected to an anode of a diode D5 and an terminal of a resistor R5, an output terminal of an operational amplifier AR1 is connected to a cathode of a diode D5, an anode of a diode D6 and a collector of a transistor Q6, a cathode of the diode D6 is connected to an anode of the diode D6 and a 6 terminal of the resistor R6, another 6 terminal of the resistor R6 is connected to a further 6 terminal of a resistor R6 and an inverting input terminal of the operational amplifier AR 72, a non-inverting input terminal of the operational amplifier AR6 is connected to a cathode of the diode D6 and a 6 terminal of the resistor R6, a further 6 terminal of the capacitor C6 and a collector of the transistor Q6, a non-inverting input terminal of the diode R6, a non-inverting input terminal of the transistor R6, a resistor R6, a non-inverting input terminal of the transistor R6, a resistor R6, a non-inverting input terminal of the transistor R6, a non-inverting input terminal of the transistor R6, a non-emitter of the transistor R6, a non-emitter terminal of the transistor R6, a non-inverting input terminal of the transistor R6, a non-emitter of a non-emitter 6, a transistor R6, a transistor.
On the basis of the scheme, the filtering and transmitting circuit utilizes an inductor L1, a capacitor C6 and a capacitor C7 to form a filtering circuit, the filtering circuit is filtered by a signal transmitter E1 and then is sent to the power distribution network early warning module, when the data signal amount is abnormal, the signal transmitter E1 sends a signal to trigger the power distribution network early warning module to alarm, otherwise, the power distribution network early warning module does not work, the end of the inductor L1 is connected with the end of the resistor R18 and the capacitor C6, the other end of the resistor R18 is connected with the output end of the operational amplifier AR6, the other end of the inductor L1 is connected with the end of the capacitor C7 and the end of the resistor R19 and the negative electrode of the voltage regulator D , the other ends of the capacitor C and the capacitor C are grounded, the positive electrode of the voltage regulator D is grounded.
On the basis of the scheme, the first voltage acquisition circuit acquires the data signal voltage of a main node of a power distribution network by using a voltage collector J with the model of PIM600, and simultaneously uses a triode Q and a triode Q to form a signal enhancement circuit to enhance signals, the second voltage acquisition circuit selects the voltage collector J with the model of PIM600 to acquire the data signal voltage of the branch nodes of the power distribution network, and simultaneously uses the triode Q and the triode Q to form a signal enhancement circuit to enhance signals, the grounding end of the voltage collector J is connected with +5V, the grounding end of the voltage collector J is grounded, the output end of the voltage collector J is connected with the end of a resistor R, the other 0 end of the resistor R is connected with the 1 end of a resistor R and the negative end of a stabilivolt D, the positive electrode of the stabilivolt D is grounded, the other 2 end of the resistor R is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with the base electrode of the triode Q and the positive electrode of a diode D, the emitter electrode of the triode Q is connected with the collector electrode of the triode Q and the emitter electrode of a resistor R, the collector electrode of the resistor R is connected with the non-emitter electrode of the triode Q, the collector electrode of the collector Q is connected with the non-phase input end of the triode Q, the collector of the triode Q, the collector electrode of the collector of the triode Q is connected with the emitter of the triode Q, the collector of the collector.
When the system is used specifically, distribution network data safety early warning systems comprise a voltage acquisition circuit, a second voltage acquisition circuit, a delay comparison circuit and a filtering and transmitting circuit, wherein the voltage acquisition circuit acquires distribution network main node data signal voltage, the second voltage acquisition circuit acquires distribution network branch node data signal voltage, the delay comparison circuit uses an operational amplifier AR1, an operational amplifier AR1 and a diode D1-diode D1 to form a peak detection circuit, a peak signal of an output signal of the 1 voltage acquisition circuit is screened and input into a non-inverting input end of the operational amplifier AR1, a time delay circuit formed by a triode Q1 and a capacitor C1 is used for delaying an output signal of the second voltage acquisition circuit, the signal is delayed and processed to ensure signal synchronism, the operational amplifier AR1, the operational amplifier AR 72, the diode AR D1 and the mean value signal of the mean value signal input into the operational amplifier AR 72, when the data signal is modified, data potentials of the main node and the branch node are very large, therefore the potential difference between the selected and the mean value of the mean value signal input into the operational amplifier AR 72 and the potential difference of the filtered signal input end of the operational amplifier AR 72 is prevented from the electrical potential difference detection amplifier 1 and the potential difference detection circuit from the electrical potential difference detection amplifier 1, the potential difference detection circuit 1, the potential difference of the electrical potential difference detection amplifier 1, the electrical potential difference detection circuit is prevented from being processed by the electrical potential difference detection amplifier 1 and the electrical potential difference detection amplifier 1, the electrical potential difference detection circuit from the electrical potential difference detection amplifier 1, the electrical potential difference of the electrical potential difference detection amplifier 1, the electrical potential difference detection circuit, the electrical potential difference of the electrical potential difference detection amplifier 1, the electrical potential difference of the electrical potential difference detection circuit, the electrical potential difference detection circuit is prevented from the electrical potential.
The above is a detailed description of the present invention with reference to the step , and it should not be understood that the present invention is limited to the specific embodiments, and it should be understood that the extension, operation method and data replacement of the present invention shall fall within the protection scope of the present invention for those skilled in the relevant art and the related technical field.
Claims (5)
- The power distribution network data safety early warning system is characterized in that a voltage acquisition circuit acquires power distribution network main node data signal voltage, a second voltage acquisition circuit acquires power distribution network node data signal voltage, the delay comparison circuit uses an operational amplifier AR1, an operational amplifier AR2 and a diode D5-a diode D7 to form a peak detection circuit, a peak signal of an output signal of an voltage acquisition circuit is screened and input into an in-phase input end of an operational amplifier AR5, a time delay circuit formed by a triode Q5 and a capacitor C5 is used for delaying the output signal of the second voltage acquisition circuit, the operational amplifier AR5, the diode D5 and the average circuit are used for screening an average signal and inputting into an anti-phase input end of the operational amplifier AR5, the operational amplifier AR5 performs subtraction processing on the signal, wherein the operational amplifier AR5 detects the input end of the operational amplifier AR5, the anti-phase signal output by the operational amplifier AR5, the operational amplifier AR5 and the potential difference signal is fed back to the in-phase input end of the AR5, the operational amplifier AR5, the post-phase signal detection circuit, the potential difference signal is fed back to the filter 5, and the post-phase difference detection circuit, the post-phase signal is fed back to the post-phase signal detection circuit of the operational amplifier 5, the post-phase signal of the operational amplifier 5, the electrical potential difference detection circuit.
- 2. A power distribution network data safety precaution system as claimed in claim as claimed in claim 1, wherein said delay comparison circuit includes an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to an anode of a diode D5 and a terminal of a resistor R5, an output terminal of the operational amplifier AR is connected to a cathode of the diode D , an anode of the diode D and a collector of a transistor Q , a cathode of the diode D is connected to an anode of the diode D and a 360 terminal of the resistor R , another terminal of the resistor R is connected to an another terminal of the operational amplifier R and an inverting input terminal of the operational amplifier Q , a non-inverting input terminal of the operational amplifier D is connected to a cathode of the diode D and a 360 terminal of the resistor R , another terminal of the resistor R is connected to a non-inverting input terminal of the transistor R and a non-inverting input terminal of the transistor R , a resistor R , a non-inverting input terminal of the transistor R , a non-inverting input terminal of the transistor R , a non-inverting input terminal of the transistor R , a non-inverting input terminal , a transistor R , a non-inverting input terminal , a non-emitter of the transistor R , a non-emitter of the transistor.
- 3. The kind of power distribution network data security early warning system of claim 2, wherein the filtering and transmitting circuit includes an inductor L1, of the inductor L1 is connected with the ends of a resistor R18 and of a capacitor C6, the other of the resistor R18 is connected with the output end of the operational amplifier AR6, the other of the inductor L1 is connected with the of the capacitor C7, the of the resistor R19 and the cathode of a voltage regulator tube D10, the other of the capacitor C6 and the capacitor C7 are connected with ground, the anode of the voltage regulator tube D10 is connected with ground, and the other of the resistor R19 is connected with the signal transmitter E1.
- 4. kinds of distribution network data security early warning system as claimed in claim 1 or 2, wherein the th voltage acquisition circuit includes voltage collector J1 model PIM600MC, power supply terminal of voltage collector J1 is connected with +5V, ground terminal of voltage collector J1 is connected with ground, output terminal of voltage collector J1 is connected with terminal of resistor R1, another terminal of resistor R1 is connected with terminal of resistor R2 and cathode of diode D1, anode of diode D1 is connected with ground, another terminal of resistor R2 is connected with base of transistor Q1, collector of transistor Q1 is connected with base of transistor Q2 and anode of diode D2, emitter of transistor Q2 is connected with emitter of transistor Q1, cathode of diode D2 is connected with terminal of capacitor C1, another terminal of capacitor C1 is connected with collector of transistor Q2 and non-inverting input terminal of AR 1.
- 5. The distribution network data safety precaution system of claim 2, wherein the second voltage collection circuit includes a voltage collector J2 of type PIM600MC, a power supply terminal of the voltage collector J2 is connected to +5V, a ground terminal of the voltage collector J2 is connected to ground, an output terminal of the voltage collector J2 is connected to the terminal of the resistor R3, another of the resistor R3 is connected to the terminal of the resistor R4 and the negative terminal of the diode D3, the positive terminal of the diode D3 is connected to ground, another 3 of the resistor R3 is connected to the base of the transistor Q3, the collector of the transistor Q3 is connected to the base of the transistor Q3 and the positive terminal of the diode D3, the emitter of the transistor Q3 is connected to the emitter of the transistor Q3, the negative terminal of the diode D3 is connected to the terminal 3 of the capacitor C3, and the collector of the transistor Q3.
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