CN116707071A - Communication power supply control system and method - Google Patents
Communication power supply control system and method Download PDFInfo
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- CN116707071A CN116707071A CN202310566606.0A CN202310566606A CN116707071A CN 116707071 A CN116707071 A CN 116707071A CN 202310566606 A CN202310566606 A CN 202310566606A CN 116707071 A CN116707071 A CN 116707071A
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- direct current
- relay
- bus bar
- negative electrode
- duplex
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- 238000004891 communication Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims description 64
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a communication power supply control system and a method, which relate to the technical field of communication power supply control and comprise the following steps: the device comprises a storage battery pack, a direct current bus bar positive electrode, a direct current bus bar negative electrode, a direct current contactor and a duplex relay; the positive electrode of the storage battery is connected with the positive electrode of the direct current bus bar; the movable contact of the direct current contactor is connected with the negative electrode of the direct current bus bar, the static contact is connected with the negative electrode of the storage battery pack, the first end of the control coil of the direct current contactor is connected with the positive electrode of the direct current bus bar, and the second end of the control coil of the direct current contactor is connected with the first static contact and the second static contact of the duplex relay; the first movable contact of the duplex relay is connected with the negative electrode of the storage battery pack, and the second movable contact is connected with the negative electrode of the direct current bus bar; after the control system is electrified and initialized, the duplex relay is closed, so that the negative electrode of the storage battery pack is connected and conducted with the negative electrode of the direct current bus bar. When the battery voltage of the storage battery pack is lower, the main power supply can be recovered to normally control the storage battery pack to be assembled into the communication power supply control system.
Description
Technical Field
The present invention relates to the field of communication power control technologies, and in particular, to a communication power control system and method.
Background
At present, different kinds of active communication equipment are installed in each communication station cabinet, and most of the communication equipment is powered by a unified communication power supply in the cabinet, so that uninterrupted power supply of the communication equipment is ensured, the working reliability of the communication equipment is improved, a main and standby power supply mode is generally adopted for the communication power supply, and a lithium ion battery or a lead-acid battery is adopted for the standby power supply.
The standby power supply is generally divided into cold access and hot access, wherein the cold access is to directly connect the standby battery with the main power supply in a confluence way through a physical switch connected on a circuit path in the communication power supply control system, and the hot access is to realize the confluence access of the standby battery by means of control logic of the power supply system.
The existing communication power supply control system mainly has the following defects:
when no main power is input, the communication device is powered by the standby power supply, when the voltage of the standby battery is low, the standby battery can be disconnected from the control system, and when the main power supply is recovered, the standby battery can not be controlled to normally access the control system.
Disclosure of Invention
The embodiment of the invention provides a communication power supply control system and a communication power supply control method, which are used for solving the technical problems that a standby power supply storage battery of the conventional communication power supply control system in the related art is low in voltage after being used, the standby power supply storage battery can be disconnected from a control circuit, and the standby power supply storage battery can not be normally connected into the communication power supply control system when a main power supply is recovered.
In a first aspect, a communication power supply control system is provided, including: the device comprises a storage battery pack, a direct current bus bar positive electrode, a direct current bus bar negative electrode, a direct current contactor and a duplex relay;
the storage battery positive electrode is connected with the direct current bus bar positive electrode;
the movable contact of the direct current contactor is connected with the negative electrode of the direct current bus bar, the static contact of the direct current contactor is connected with the negative electrode of the storage battery pack, the first end of the control coil of the direct current contactor is connected with the positive electrode of the direct current bus bar, and the second end of the control coil of the direct current contactor is connected with the first static contact and the second static contact of the duplex relay;
the first movable contact of the duplex relay is connected with the negative electrode of the storage battery pack, and the second movable contact of the duplex relay is connected with the negative electrode of the direct current bus bar; and
and after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay are respectively closed with the first static contact and the second static contact, so that the negative electrode of the storage battery pack is connected and conducted with the negative electrode of the direct-current bus bar.
In some embodiments, the communication power control system further comprises: the double self-locking switch, the self-retaining relay and the monitoring unit;
the first fixed contact of the duplex self-locking switch is connected with the first end of the control coil of the duplex relay, the first movable contact is connected with the negative electrode of the storage battery pack, and the second end of the control coil of the duplex relay is connected with the positive electrode of the direct-current bus bar;
the second stationary contact of the duplex self-locking switch is grounded, and the second movable contact is connected with the input and output ends of the monitoring unit;
the setting coil and the first end of the reset coil of the self-holding relay are connected with the positive electrode of the direct current bus bar, the second end of the setting coil and the first end of the reset coil of the self-holding relay are connected with the input and output ends of the monitoring unit, the first fixed contact of the self-holding relay is connected with the first end of the control coil of the duplex relay, the first movable contact of the self-holding relay is connected with the negative electrode of the direct current bus bar, the second fixed contact of the self-holding relay is connected with the input and output ends of the monitoring unit, and the second movable contact of the self-holding relay is digitally connected with the monitoring unit.
In some embodiments, the communication power control system further comprises: a protective relay and a protective diode group;
the normally closed movable contact of the protection relay is connected with the second end of the control coil of the duplex relay, and the stationary contact is connected with the positive electrode of the direct current bus bar;
the protection diode group comprises a plurality of first protection diodes which are connected in parallel, wherein the anode of one first protection diode is connected with the cathode of one storage battery of the storage battery group, the cathode is connected with the first end of the control coil of the protection relay, and the second end of the control coil of the protection relay is connected with the positive electrode of the direct current bus bar.
In some embodiments, the communication power control system further comprises:
the circuit breaker group comprises a plurality of circuit breakers, wherein a first end of each circuit breaker is connected with the negative electrode of one storage battery of the storage battery group, the anode of one first protection diode and the input and output ends of the monitoring unit, and all second ends of the circuit breakers are connected with the static contact of the direct current contactor and the negative electrode of the direct current bus bar.
In some embodiments, a second protection diode is disposed between the first stationary contact of the latching relay and the first end of the control coil of the duplex relay.
In some embodiments, a safety element is disposed between the second end of the control coil of the dc contactor and the first and second stationary contacts of the duplex relay.
In some embodiments, a third protection diode is arranged between the first movable contact of the duplex relay and the negative electrode of the storage battery pack, and between the second movable contact of the duplex relay and the negative electrode of the direct current bus bar.
In a second aspect, a communication power supply control method is provided, including the steps of:
after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay are respectively closed with the first fixed contact and the second fixed contact, so that the negative electrode of the storage battery pack is connected and conducted with the negative electrode of the direct current bus bar.
In some embodiments, after the control system is powered on and initialized, the step of closing the first moving contact and the second moving contact of the duplex relay with the first stationary contact and the second stationary contact respectively to connect and conduct the negative electrode of the storage battery with the negative electrode of the dc bus bar includes:
when a monitoring unit of the control system is electrified and initialized, the duplex self-locking switch is closed;
detecting whether the duplex self-locking switch is closed or not by using a monitoring unit;
if the duplex self-locking switch is in a closed state, the self-locking relay is controlled to be closed by the monitoring unit;
judging whether the closing time of the duplex self-locking switch exceeds a preset time by using a monitoring unit;
if yes, the dual self-locking switch is generated to not disconnect the alarm signal.
In some embodiments, after the step of controlling the closing of the latching relay by using the monitoring unit if the duplex self-locking switch is in the closed state, the method further includes:
and acquiring voltage signals of any one of the circuit breakers in the circuit breaker group by using the monitoring unit, judging that the corresponding circuit breaker is disconnected if the absolute value of the voltage difference between the voltage signals and the voltage of the direct current bus bar is larger than a preset voltage difference value, and generating a circuit breaker disconnection alarm signal.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a communication power supply control system and a communication power supply control method, wherein the communication power supply control system is provided with a direct current contactor and a duplex relay, a first end of a control coil of the direct current contactor is connected with a positive electrode of a direct current bus bar, a second end of the control coil of the direct current contactor is connected with a first static contact and a second static contact of the duplex relay, a first movable contact of the duplex relay is connected with a negative electrode of a storage battery pack, a second movable contact of the duplex relay is connected with the negative electrode of the direct current bus bar, and after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay are respectively closed with the first static contact and the second static contact, so that the negative electrode of the storage battery pack is connected and conducted with the negative electrode of the direct current bus bar. The invention adopts the duplex relay to share the standby storage battery negative electrode and the direct current bus bar negative electrode as the common driving source of the direct current contactor coil, and can normally control the standby storage battery to be connected into the communication power supply control system when the battery voltage of the standby storage battery is lower.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a communication power supply control system according to an embodiment of the present invention;
fig. 2 is a flowchart of a communication power supply control method according to an embodiment of the present invention;
in the figure:
101. a battery pack;
102. a direct current bus bar positive electrode;
103. a DC bus bar negative electrode;
104. a DC contactor;
105. a duplex relay;
106. a double self-locking switch;
107. a self-sustaining relay;
108. a monitoring unit;
109. a protective relay;
110. a protective diode group; 1101. a first protection diode;
111. a circuit breaker group; 1111. a circuit breaker;
112. a second protection diode;
113. a safety element;
114. and a third protection diode.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a communication power supply control system, which can solve the technical problems that the voltage of a standby power supply storage battery of the existing communication power supply control system is lower after the standby power supply storage battery is used, the standby power supply storage battery can be disconnected from a control circuit, and the standby power supply storage battery can not be normally connected into the communication power supply control system when a main power supply is recovered.
Referring to fig. 1, an embodiment of the present invention provides a communication power supply control system, including: battery pack 101, dc bus positive electrode 102, dc bus negative electrode 103, dc contactor 104, and duplex relay 105.
The positive electrode of the storage battery pack 101 is connected with the positive electrode 102 of the direct current bus bar. The movable contact of the dc contactor 104 is connected to the negative electrode 103 of the dc bus bar, the stationary contact is connected to the negative electrode of the battery pack 101, the first end of the control coil of the dc contactor 104 is connected to the positive electrode 102 of the dc bus bar, and the second end is connected to the first stationary contact and the second stationary contact of the duplex relay 105. The first movable contact of the duplex relay 105 is connected to the negative electrode of the battery pack 101, and the second movable contact is connected to the negative electrode 103 of the dc bus bar.
After the control system is powered on and initialized, the first movable contact and the second movable contact of the duplex relay 105 are respectively closed with the first stationary contact and the second stationary contact, so that the negative electrode of the storage battery pack 101 is connected and conducted with the negative electrode 103 of the direct-current bus bar.
The communication power supply control system is provided with a direct current contactor and a duplex relay, wherein a first end of a control coil of the direct current contactor is connected with an anode of a direct current bus bar, a second end of the control coil of the direct current contactor is connected with a first static contact and a second static contact of the duplex relay, a first movable contact of the duplex relay is connected with a cathode of a storage battery pack, a second movable contact of the duplex relay is connected with a cathode of the direct current bus bar, and after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay are respectively closed with the first static contact and the second static contact, so that the cathode of the storage battery pack is connected and conducted with the cathode of the direct current bus bar. The invention adopts the duplex relay to share the standby storage battery negative electrode and the direct current bus bar negative electrode as the common driving source of the direct current contactor coil, and can normally control the standby storage battery to be connected into the communication power supply control system when the battery voltage of the standby storage battery is lower.
As an optional implementation manner, in an embodiment of the present invention, the communication power supply control system further includes: a duplex self-locking switch 106, a self-locking relay 107 and a monitoring unit 108.
The first stationary contact of the duplex self-locking switch 106 is connected with the first end of the control coil of the duplex relay 105, the first movable contact is connected with the negative electrode of the storage battery pack 101, and the second end of the control coil of the duplex relay 105 is connected with the positive electrode of the direct current bus bar. The second stationary contact of the duplex self-locking switch 106 is grounded, and the second movable contact is connected to the input/output end of the monitoring unit 108.
The first end and the second end of the setting coil and the resetting coil of the self-holding relay 107 are connected with the two input and output ends of the monitoring unit 108, the first fixed contact of the self-holding relay 107 is connected with the first end of the control coil of the duplex relay 105, the first movable contact is connected with the cathode 103 of the direct current bus bar, the second fixed contact of the self-holding relay 107 is connected with one input and output end of the monitoring unit 108, and the second movable contact is digitally connected with the monitoring unit 108.
Specifically, the duplex self-locking switch 106 is generally disposed at a panel of the monitoring unit 108, the duplex self-locking switch 106 is closed, the control system is powered on, the first moving contact and the second moving contact of the duplex relay 105 are respectively closed with the first stationary contact and the second stationary contact, the moving contact and the stationary contact of the direct current contactor 104 are closed, the negative electrode of the storage battery 101 is connected and conducted with the negative electrode 103 of the direct current bus bar, and the standby storage battery 101 is forcedly connected with the direct current bus bar. Meanwhile, the input/output end of the monitoring unit 108 detects a low level signal of the duplex self-locking switch 106, and the monitoring unit 108 controls the self-locking relay 107 to be attracted after detecting the low level, so as to keep the movable contact and the stationary contact of the dc contactor 104 closed. In addition, the monitoring unit 108 records the continuous on time of the double self-locking switch 106, if the continuous on time is longer than the preset time (for example, 10 s), it indicates that the double self-locking switch 106 is not turned off in time, and generates a double self-locking switch non-off alarm signal, and notifies the field personnel to turn off the double self-locking switch, and the monitoring unit 108 clears the double self-locking switch non-off alarm signal once detecting that the double self-locking switch is turned off. According to the invention, strong and weak current isolation control and detection are realized through the duplex self-locking switch, on one hand, the duplex self-locking switch 106 can directly control the storage battery pack 101 to be forcibly connected into the direct current bus bar, and on the other hand, the monitoring unit can detect the state of the duplex self-locking switch 106, so that timely action and alarm can be performed.
In addition, the lvd1_on signal and the lvd1_off driving output signal of the monitoring unit 108 are connected with the first ends of the set coil and the reset coil of the self-holding relay 107 through the two input and output ends of the monitoring unit 108, so as to control the setting and resetting of the first movable contact and the second movable contact of the self-holding relay 107, and the self-holding relay 107 can keep the movable contact and the static contact of the dc contactor 104 closed when the monitoring unit 108 is not in place or fails, so that the state that the standby storage battery pack 101 is connected with the dc bus bar is kept unchanged. The second stationary contact of the self-holding relay 107 is connected with one input/output end of the monitoring unit 108, the second movable contact is digitally connected with the monitoring unit 108, when the on-off state of the self-holding relay 107 changes, the input/output end of the monitoring unit 108 detects the change of the digital input detection port, and when the control state and the detection state of the self-holding relay 107 are inconsistent, an alarm signal of the fault of the self-holding relay 107 is generated.
As an optional implementation manner, in an embodiment of the present invention, the communication power supply control system further includes: a protective relay 109 and a protective diode group 110.
The normally closed movable contact of the protection relay 109 is connected to the second end of the control coil of the duplex relay 105, and the stationary contact is connected to the positive electrode 102 of the dc bus bar. The protection diode group 110 includes a plurality of first protection diodes 1101 connected in parallel, an anode of one first protection diode 1101 is connected to a cathode of one battery of the battery pack 101, a cathode is connected to a first end of a control coil of the protection relay 109, and a second end of the control coil of the protection relay 109 is connected to the positive electrode 102 of the dc bus bar.
When the polarity of a storage battery in the storage battery pack 101 is reversely connected, the corresponding diode is conducted, the coil of the protection relay 109 is electrified, the normally closed contact of the protection relay 109 is disconnected, the coil of the duplex relay 105 cannot be electrified, the duplex relay 105 cannot control the direct current contactor 104 to be attracted, so that the connection between the standby storage battery pack 101 and the direct current bus bar is disconnected, the instant or long-term reverse connection of the battery is prevented, and the storage battery pack 101 is protected.
As an optional implementation manner, in an embodiment of the present invention, the communication power supply control system further includes: the circuit breaker group 111, the circuit breaker group 111 includes a plurality of circuit breakers 1111, a first end of one circuit breaker 1111 is connected with a negative electrode of one battery of the battery pack 101, an anode of one first protection diode 1101, and one input/output end of the monitoring unit 108, and a second end of all circuit breakers 1111 are connected with a stationary contact of the dc contactor and the dc bus bar negative electrode 103. The breaker group 111 is used for connecting all the storage batteries of the storage battery group 101 in parallel to a direct current bus bar.
Specifically, assuming that the breaker group 111 includes six breakers 1111, one ends of the six breakers 1111 respectively draw out voltage signals bp_b_qk1 to bp_b_qk6, and 6 voltage signals are connected to 6 input/output ends of the monitoring unit 108, the monitoring unit 108 is configured to detect on/off states of the respective breakers 1111. The monitoring unit 108 collects 6 voltage signals and compares the collected voltage signals with the collected voltage of the dc bus bar to determine, when the absolute value of the voltage difference between the voltage signals and the voltage of the dc bus bar is greater than 500mV, the corresponding circuit breaker 1111 is determined to be opened, and at this time, the monitoring unit 108 will generate an alarm signal.
As an alternative embodiment, in an embodiment of the invention, a second protection diode 112 is provided between the first stationary contact of the latching relay 107 and the first end of the control coil of the duplex relay. The second protection diode 112 can ensure the current flow direction when the circuit works normally.
As an alternative embodiment, in an embodiment of the invention, a safety element 113 is arranged between the second end of the control coil of the dc contactor and the first and second stationary contacts of the duplex relay. Optionally, the fuse element 113 is a fuse, which mainly plays an overload protection role, and the fuse blows and cuts off the current when the current abnormally rises to a certain height and heat, so as to protect the safe operation of the circuit.
As an alternative implementation manner, in an embodiment of the present invention, a third protection diode 114 is disposed between the first moving contact of the duplex relay 105 and the negative electrode of the storage battery pack 101, and between the second moving contact of the duplex relay and the negative electrode 103 of the dc bus bar, and the third protection diode 114 may ensure a current flow direction when the circuit is in normal operation.
The embodiment of the invention provides a communication power supply control method, which comprises the following steps:
after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay 105 are respectively closed with the first static contact and the second static contact, so that the negative electrode of the storage battery pack 101 is connected and conducted with the negative electrode 103 of the direct-current bus bar.
According to the communication power supply control method, the standby storage battery negative electrode and the direct current bus bar negative electrode are shared as a common driving source of the direct current contactor coil by adopting the duplex relay, and when the battery voltage of the standby storage battery is low, the standby storage battery can still be normally controlled to be connected into the communication power supply control system.
As an alternative embodiment, referring to fig. 2, after the control system is powered on and initialized, the steps of closing the first moving contact and the second moving contact of the duplex relay 105 with the first stationary contact and the second stationary contact, respectively, so as to connect and conduct the negative electrode of the battery pack 101 with the negative electrode 103 of the dc bus bar include:
after the monitoring unit 108 of the control system is powered on and initialized, the duplex self-locking switch 106 is closed;
the use of the monitoring unit 108 detects whether the double self-locking switch 106 is closed;
if the duplex self-locking switch 106 is in a closed state, the self-locking relay 107 is controlled to be closed by the monitoring unit 108;
the use monitoring unit 108 judges whether the closing time of the duplex self-locking switch 106 exceeds a preset time;
if so, a double self-locking switch 106 is generated to not open the alarm signal.
Further, after the step of controlling the closing of the latching relay 107 by the monitoring unit 108 if the duplex self-locking switch 106 is in the closed state, the method further includes:
the monitoring unit 108 is used to collect voltage signals of any one of the circuit breakers 1111 in the circuit breaker group 111, and if the absolute value of the voltage difference between the voltage signals and the voltage of the dc bus bar is greater than a preset voltage difference value, the corresponding circuit breaker 1111 is determined to be opened, and an opening alarm signal of the circuit breaker 1111 is generated.
Specifically, referring to fig. 2, step S101 is performed, the monitoring unit 108 is initialized by power-up, starts to operate, and step S102 is performed;
step S102, the monitoring unit 108 checks whether the duplex self-locking switch 106 is closed: if yes, go to step S103; if not, executing step S104;
step S103, the monitoring unit 108 controls the self-holding relay 107 to be closed, so that a first movable contact and a second movable contact of the duplex relay 105 are respectively closed with a first static contact and a second static contact, and the movable contact and the static contact of the direct current contactor 104 are closed, and the negative electrode of the storage battery pack 101 is connected and conducted with the negative electrode 103 of the direct current bus bar;
in step S104, the monitoring unit 108 determines whether the closing duration of the duplex self-locking switch 106 exceeds a preset duration: if yes, go to step S105; if not, executing step S106;
step S105, the monitoring unit 108 generates a non-disconnection alarm signal of the duplex self-locking switch 106;
in step S106, the monitoring unit 108 collects the voltage signal of any one of the circuit breakers 1111 in the circuit breaker group 111, and determines whether the absolute value of the voltage difference between the voltage signal and the dc bus bar is greater than the preset voltage difference value: if yes, go to step S107; if not, executing step S108;
step S107, the monitoring unit 108 generates a breaker 1111 open alarm signal;
in step S108, the monitoring unit 108 detects whether the state of the latching relay 107 coincides with the logic control in the monitoring unit 108: if not, go to step S109; if yes, go to step S110;
step S109, the monitoring unit 108 generates a hardware fault alarm signal of the latching relay 107;
in step S110, the monitoring unit 108 detects whether there is an external power-down request instruction: if yes, go to step S111; if not, executing step S102;
in step S111, the monitoring unit 108 controls the latching relay 107 to be opened, so that the first moving contact and the second moving contact of the duplex relay 105 are respectively opened to the first stationary contact and the second stationary contact, the moving contact of the dc contactor 104 is opened to the stationary contact, and the negative electrode of the battery pack 101 is opened to the negative electrode 103 of the dc bus bar.
The invention needs to be opened in time after the double self-locking switch is closed, if the double self-locking switch is closed for a long time, the system can generate a non-opening alarm signal of the double self-locking switch, remind a user of opening in time, and improve the safety of the system. The invention can monitor the voltage signal of the breaker in real time, and can give an alarm in real time when the breaker breaks down and is disconnected, thereby improving the safety of the system.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present invention, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.
Claims (10)
1. A communication power supply control system, comprising: the device comprises a storage battery pack (101), a direct current bus bar positive electrode (102), a direct current bus bar negative electrode (103), a direct current contactor (104) and a duplex relay (105);
the positive electrode of the storage battery pack (101) is connected with the positive electrode (102) of the direct current bus bar;
a movable contact of the direct current contactor (104) is connected with a negative electrode of the direct current bus bar, a static contact of the direct current contactor (104) is connected with a negative electrode of the storage battery pack (101), a first end of a control coil of the direct current contactor (104) is connected with a positive electrode (102) of the direct current bus bar, and a second end of the control coil of the direct current contactor is connected with a first static contact and a second static contact of the duplex relay (105);
a first movable contact of the duplex relay (105) is connected with the negative electrode of the storage battery pack (101), and a second movable contact of the duplex relay is connected with the negative electrode (103) of the direct current bus bar; and
after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay (105) are respectively closed with the first fixed contact and the second fixed contact, so that the negative electrode of the storage battery pack (101) is connected and conducted with the negative electrode (103) of the direct current bus bar.
2. The communication power control system of claim 1, further comprising: the double self-locking switch (106), the self-locking relay (107) and the monitoring unit (108);
a first fixed contact of the duplex self-locking switch (106) is connected with a first end of a control coil of the duplex relay (105), a first movable contact is connected with a negative electrode of the storage battery pack (101), and a second end of the control coil of the duplex relay (105) is connected with a positive electrode (102) of the direct-current bus bar;
the second fixed contact of the duplex self-locking switch (106) is grounded, and the second movable contact is connected with the input and output ends of the monitoring unit (108);
the setting coil and the first end of the reset coil of the self-holding relay (107) are connected with the positive electrode (102) of the direct current bus bar, the second end of the self-holding relay is connected with the input and output end of the monitoring unit (108), the first fixed contact of the self-holding relay (107) is connected with the first end of the control coil of the duplex relay (105), the first movable contact of the self-holding relay is connected with the negative electrode (103) of the direct current bus bar, the second fixed contact of the self-holding relay (107) is connected with the input and output end of the monitoring unit (108), and the second movable contact of the self-holding relay is digitally connected with the monitoring unit (108).
3. The communication power control system of claim 2, further comprising: a protective relay (109) and a protective diode group (110);
the normally closed movable contact of the protection relay (109) is connected with the second end of the control coil of the duplex relay (105), and the stationary contact is connected with the positive pole (102) of the direct current bus bar;
the protection diode group (110) comprises a plurality of first protection diodes (1101) which are connected in parallel, wherein the anode of one first protection diode (1101) is connected with the cathode of one storage battery of the storage battery group (101), the cathode of the first protection diode group is connected with the first end of the control coil of the protection relay (109), and the second end of the control coil of the protection relay (109) is connected with the positive electrode (102) of the direct current bus bar.
4. A communication power supply control system according to claim 3, further comprising:
the circuit breaker group (111), circuit breaker group (111) include a plurality of circuit breakers (1111), and one circuit breaker (1111) first end with the negative pole of a battery of storage battery group (101), one the positive pole of first protection diode (1101) and the input/output end of monitor unit (108) are connected, all circuit breaker (1111) second ends connect and with the stationary contact of direct current contactor (104) with direct current busbar negative pole (103).
5. The communication power control system according to claim 2, wherein:
a second protection diode (112) is arranged between the first fixed contact of the self-holding relay (107) and the first end of the control coil of the duplex relay (105).
6. The communication power control system according to claim 1, wherein:
and a safety element (113) is arranged between the second end of the control coil of the direct current contactor (104) and the first and second fixed contacts of the duplex relay (105).
7. The communication power control system according to claim 1, wherein:
and a third protection diode (114) is arranged between the first movable contact of the duplex relay (105) and the negative electrode of the storage battery pack (101) and between the second movable contact of the duplex relay (105) and the negative electrode (103) of the direct current bus bar.
8. A communication power supply control method using the communication power supply control system according to claim 1, characterized by comprising the steps of:
after the control system is electrified and initialized, the first movable contact and the second movable contact of the duplex relay (105) are respectively closed with the first static contact and the second static contact, so that the negative electrode of the storage battery pack (101) is connected and conducted with the negative electrode (103) of the direct current bus bar.
9. The method for controlling a communication power supply according to claim 8, wherein the step of closing the first movable contact and the second movable contact of the duplex relay (105) with the first stationary contact and the second stationary contact, respectively, to connect and conduct the negative electrode of the battery pack (101) with the negative electrode (103) of the dc bus bar after the control system is powered on and initialized, comprises:
after a monitoring unit (108) of the control system is electrified and initialized, the duplex self-locking switch (106) is closed;
detecting whether the duplex self-locking switch (106) is closed or not by using a monitoring unit (108);
if the duplex self-locking switch (106) is in a closed state, the self-locking relay (107) is controlled to be closed by the monitoring unit (108);
judging whether the closing time of the duplex self-locking switch (106) exceeds a preset time by using a monitoring unit (108);
if yes, a double self-locking switch (106) is generated to not disconnect the alarm signal.
10. The method according to claim 9, wherein after the step of controlling the closing of the latching relay (107) with the monitoring unit (108) if the duplex self-locking switch (106) is in the closed state, further comprising:
and a monitoring unit (108) is used for collecting voltage signals of any circuit breaker (1111) in the circuit breaker group (111), if the absolute value of the voltage difference between the voltage signals and the voltage of the direct current bus bar is larger than a preset voltage difference value, the corresponding circuit breaker (1111) is judged to be opened, and a circuit breaker (1111) opening alarm signal is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566606.0A CN116707071A (en) | 2023-05-18 | 2023-05-18 | Communication power supply control system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566606.0A CN116707071A (en) | 2023-05-18 | 2023-05-18 | Communication power supply control system and method |
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| Publication Number | Publication Date |
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| CN116707071A true CN116707071A (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310566606.0A Pending CN116707071A (en) | 2023-05-18 | 2023-05-18 | Communication power supply control system and method |
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| CN (1) | CN116707071A (en) |
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2023
- 2023-05-18 CN CN202310566606.0A patent/CN116707071A/en active Pending
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Effective date of registration: 20240612 Address after: 430000 No. 6, High-tech Fourth Road, Donghu High-tech Development Zone, Wuhan City, Hubei Province Applicant after: FIBERHOME TELECOMMUNICATION TECHNOLOGIES Co.,Ltd. Country or region after: China Address before: Floor 11, building 1, no.6, Gaoxin 4th Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province 430205 Applicant before: WUHAN FIBERHOME TECHNICAL SERVICES Co.,Ltd. Country or region before: China Applicant before: FIBERHOME TELECOMMUNICATION TECHNOLOGIES Co.,Ltd. |