CN208835827U - A kind of energy-storage battery based on thermal power plant's AGC frequency modulation makees the spare system of station service - Google Patents
A kind of energy-storage battery based on thermal power plant's AGC frequency modulation makees the spare system of station service Download PDFInfo
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- CN208835827U CN208835827U CN201821794087.4U CN201821794087U CN208835827U CN 208835827 U CN208835827 U CN 208835827U CN 201821794087 U CN201821794087 U CN 201821794087U CN 208835827 U CN208835827 U CN 208835827U
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Abstract
The utility model discloses a kind of energy-storage batteries based on thermal power plant's AGC frequency modulation to make the spare system of station service, including energy-storage system, main building direct current system, unit AC safety watl power-supply system and unit direct current emergency power supply system；Wherein, the utility model utilizes the battery group that fired power generating unit and energy-storage system joint AGC frequency modulation are participated in thermal power plant, according to main building direct current system, the operating condition of unit AC safety watl power-supply system and unit direct current security system, effectively in time provided for it is sufficient spare, to avoid deactivating for because of caused by station service direct current system, unit security system failure important equipment；The utility model is that a kind of energy-storage battery based on thermal power plant's frequency modulation makees the spare technology of station service, can increase substantially Safety of plant's power supply reliability, and then improve power quality.
Description
Technical field
The utility model relates to a kind of Service Power in Thermal Power Plant power of alterating and direct current systems, and in particular to one kind is based on thermal power plant
The energy-storage battery of AGC frequency modulation makees the spare system of station service.
Background technique
Automatic device, emergency lighting, protective relaying device, signal device and electrical equipment in power plant it is remote
Operation is generally powered using DC power supply.This mainly has benefited from battery group independently of alternating current, and event occurs in AC system
It can still operate normally, can not only continue to automatic device, signal, control, relay equipment power supply, but also also ensure when barrier
Emergency lighting electricity consumption.Station service direct current system is often considered as " heart " in power plant, can see that station service direct current system is generating electricity completely
The status to hold the balance in factory.At the same time, with the continuous development of power industry, reliability of the people to power supply, safety
More stringent requirements are proposed, as the last line of defense for protecting unit --- the importance of accident emergency power supply do not say even more and
Analogy.
But in actual production, since battery group charging and discharging capabilities are by power itself, capacity and charging and discharging state
Limitation, also easily occur due to maintenance management it is not in place caused by the practical backup time much smaller than design time the problem of.
Meanwhile diesel generating set is elected to be unit emergency power supply extensively in unit failure security system, but in practical application by
Not in place, the antifreeze problem of cooling water and fuel under cold environment of stationary state and maintenance is chronically in bavin hair
Reason, so that starting success rate of the bavin hair in accident be not high and runing time falls short of, this is when major accident occurs for unit
It is difficult to receive.Therefore, for station service improve it is effective, safe and reliable it is spare be improve power plant power generating quality it is important
It ensures.
Nowadays with the propulsion that deepens continuously of electric system reform, electric power assisted hatching mechanism is gradually at perfect
And maturation, the frequency modulation service that generating set provides can be compensated from power grid, and dynamics constantly enhances.Therefore in economic thick stick
Under the driving of bar, current electricity power enterprise is surging to the enthusiasm for improving unit AGC ability, and fired power generating unit and energy-storage system join
It closes applying for AGC frequency modulation technology and has become new hot spot in China's power industry.And the energy-storage battery of large capacity provides electric power
The ability and effect of system AGC frequency modulation have apparent advantage relative to all conventional electric power generation equipment.
To sum up, the large capacity energy-storage battery for providing AGC frequency modulation for electric system is put on as the spare of station service electrical system
Important schedule.It is rapidly developed in energy storage frequency modulation as novel, advanced technology, domestic and international project project is such as emerged rapidly in large numbersBamboo shoots after a spring rain, engineering
Under effective background, the energy-storage battery of joint frequency modulation will be used for as the standby of main building direct current system and unit emergency power supply
With the effective measures for being undoubtedly guarantee safe and stable operation of power system, guaranteeing power quality.
Utility model content
The purpose of this utility model is small for existing thermal power plant's DC battery group capacity and unit failure is ensured public security
Bavin hair starting success rate is not high in system, runing time is short and energy storage frequency modulation shows as what novel, advanced technology rapidly developed
Shape provides a kind of energy-storage battery based on thermal power plant's AGC frequency modulation and makees the spare system of station service, and high safety and reliability connects
Line mode is simple, can provide in time for station service safely and effectively spare.
In order to achieve the above objectives, the utility model adopts the following technical scheme to realize:
A kind of energy-storage battery based on thermal power plant's AGC frequency modulation makees the spare system of station service, including energy-storage system, main building
Direct current system, unit AC safety watl power-supply system and unit direct current emergency power supply system；Wherein,
Energy-storage system is connected directly on high-voltage auxiliary bus；Main building direct current system is connected on energy-storage system；Unit
AC safety watl power-supply system is connected on energy-storage system；Unit direct current emergency power supply system is connected on energy-storage system.
The utility model, which further improves, to be, energy-storage system includes the first breaker, dry-type transformer, bidirectional power
Conversion equipment, the second breaker, energy storage battery group, third breaker, the first cable, the 4th breaker, the first chopper,
Two cables, the 5th breaker, inverter, third cable, the 6th breaker and the second chopper；Wherein,
Energy storage battery group passes sequentially through the second breaker, bidirectional power conversion equipment, dry-type transformer, the first breaker
It is connected to high-voltage auxiliary bus.
The utility model, which further improves, to be, main building direct current system includes monitoring system, microcomputer direct current system prison
Control device, direct current system battery group, the first dc circuit breaker, the second dc circuit breaker, third dc circuit breaker, the 4th direct current
Breaker, positive interbus, cathode interbus, the 5th dc circuit breaker, the 6th dc circuit breaker, direct current system inversion
Device, the 4th cable, the 5th cable, positive DC disconnecting switch, negative DC disconnecting switch, positive outlet bus, cathode outlet
Bus, arrester, busbar voltage and insulation detection device, positive wire-outgoing breaker, cathode wire-outgoing breaker and outlet are kept apart
It closes；Wherein,
It is female that direct current system battery component does not pass through the first dc circuit breaker, the second dc circuit breaker is connected to anode contact
On line and cathode interbus, microcomputer direct current system monitoring device is in addition to for monitoring the simultaneously information of transmission monitor system, also
The order for being sent to it for executing monitoring system, so that the microcomputer direct current system monitoring device is able to carry out corresponding information
Mould enter, open into, output and communicate, direct current system inverter passes through the 5th dc circuit breaker respectively and the 6th dc circuit breaker connects
It is straight by anode respectively on positive interbus and cathode interbus on being connected on positive interbus and cathode interbus
Stream disconnecting switch and negative DC disconnecting switch are connected on positive outlet bus and cathode outlet bus, while respectively by the
On four cables and the 5th cable connection to positive outlet bus and cathode outlet bus, DC feeder, which passes sequentially through outlet, keeps apart
It closes, positive wire-outgoing breaker and cathode wire-outgoing breaker are respectively connected on positive outlet bus and cathode outlet bus, bus
Voltage and insulation monitoring device are connected on positive outlet bus and cathode outlet bus by arrester；
Energy storage battery group passes sequentially through third breaker, the first cable, the 4th breaker, the first chopper and main building
Third dc circuit breaker, the 4th dc circuit breaker of direct current system are respectively connected to positive interbus, on cathode interbus
Make backup power source.
The utility model, which further improves, to be, unit AC safety watl power-supply system includes desulfurization security personnel MCC, the first pumping
Drawer formula breaker, the second open frame circuit breaker, steam turbine security personnel MCC, third open frame circuit breaker, the 4th open frame circuit breaker, pot
Furnace is ensured public security MCC, the 5th open frame circuit breaker, the 6th open frame circuit breaker, PC sections of AC safety watl, the 7th open frame circuit breaker, the
Eight open frame circuit breakers, Bao Anbian, the 9th open frame circuit breaker, the tenth open frame circuit breaker and diesel generating set；Wherein,
Flexible the 8th open frame circuit breaker of crossing of security personnel is connected to PC sections of AC safety watl, and diesel generating set passes sequentially through the tenth
Open frame circuit breaker, the 9th open frame circuit breaker are connected to PC sections of AC safety watl, and desulfurization security personnel MCC passes through the open circuit of the second drawer type
Device is connected to PC sections of common power supply desulfurization, while being connected to PC sections of backup power source AC safety watl by the first open frame circuit breaker,
Steam turbine security personnel MCC is connected to PC sections of common power supply steam turbine by the 4th open frame circuit breaker, while passing through the open circuit of third drawer type
Device is connected to PC sections of backup power source AC safety watl, and boiler security personnel MCC is connected to common power supply pot by the 6th open frame circuit breaker
PC sections of furnace, while PC sections of backup power source AC safety watl are connected to by the 5th open frame circuit breaker；
Energy storage battery group passes sequentially through third breaker, the second cable, the 5th breaker, inverter and exchanges guarantor with unit
7th open frame circuit breaker of peace power-supply system is connected to AC safety watl PC Duan Shangzuo backup power source.
The utility model, which further improves, to be, unit direct current emergency power supply system includes security personnel's battery group, the 7th
Breaker, the 8th breaker, direct current security personnel PC sections and disconnecting switch；Wherein,
Security personnel's battery group passes sequentially through the 7th breaker, PC sections of direct current security personnel and disconnecting switch and supplies to direct current protective load
Electricity；
It is straight that energy storage battery group passes sequentially through third breaker, third cable, the 6th breaker, the second chopper and unit
8th breaker of stream emergency power supply system is connected to direct current security personnel's PC Duan Shangzuo backup power source.
Compared with prior art, the utility model has the advantage that
1, the utility model energy-storage system, main building direct current system, unit AC safety watl power-supply system and unit direct current are protected
Pacify that the most of independence of power-supply system four is strong, avoids wherein a certain section failure and influence the safety and stability of other parts
Operation, improves the reliability of power supply；
2, Tthe utility model system is clear in structure, and wiring is simple, be especially embodied in energy-storage battery make main Plant Direct Current System,
When unit emergency power supply system reserve, the station service electrical system of different thermal power plants can be suitable for；
3, the utility model energy storage battery pool-size is big, can be station service electrical system when being not involved in AGC joint frequency modulation
The spare capacity of abundance is provided, effectively the practical spare capacity deficiency of solution conventional battery group and bavin hair starting are unsuccessful, run
The problem of time is short, and security personnel become power-off, and then strive for the longer time to avoid serious thing for the solution of station service electrical system failure
Therefore the generation of consequence；
4, it is easy to operate using energy-storage battery to make switching when standby for the utility model, can solve rapidly, in time
Backup power source insufficient the problems such as even losing, avoid in time when main building direct current system, unit emergency power supply system break down
The danger that electrical secondary system device, unit because of caused by direct current system and the unit emergency power supply system failure stop working；
5, the utility model either makees the spare of main Plant Direct Current System, still makees the standby of unit emergency power supply system
With, the switching of entire energy-storage battery can be realized by a set of switching device, reduce the quantity and cable dosage of switch, raising
Power supply economics.
In conclusion the utility model has O&M expense low, safe and reliable, practical and convenient for popularization and use
Advantage.
Detailed description of the invention
Fig. 1 is the utility model structure principle chart.
Fig. 2 is that energy-storage battery makees the spare structure principle chart of main Plant Direct Current System.
Fig. 3 is that energy-storage battery makees the spare structure schematic diagram of unit AC safety watl power-supply system.
Fig. 4 is the structure schematic diagram that energy-storage battery makees unit direct current emergency power supply system reserve.
In figure: 1- energy-storage system；2- main building direct current system；3- unit AC safety watl power-supply system；4- unit direct current is protected
Pacify power-supply system；The first breaker of 1-1-；1-2-dry-type transformer；1-3-bidirectional power conversion equipment (PCS, Power
Conversion System)；The second breaker of 1-4-；1-5-energy storage battery group；1-6-third breaker；1-7-
One cable；The 4th breaker of 1-8-；The first chopper of 1-9-；The second cable of 1-10-；The 5th breaker of 1-11-；1-12—
Inverter；1-13-third cable；The 6th breaker of 1-14-；1-15-and the second chopper；2-1-monitoring system；2-2—
Microcomputer direct current system monitoring device；2-3-direct current system battery group；The first dc circuit breaker of 2-4-；The second direct current of 2-5-
Breaker；2-6-third dc circuit breaker；The 4th dc circuit breaker of 2-7-；2-8-anode interbus；2-9-cathode connection
Network bus；The 5th dc circuit breaker of 2-10-；The 6th dc circuit breaker of 2-11-；2-12-direct current system inverter；2-13—
4th cable；The 5th cable of 2-14-；2-15-positive DC disconnecting switch；2-16-negative DC disconnecting switch；2-17—
Positive outlet bus；2-18-cathode outlet bus；2-19-arrester；2-20-busbar voltage and insulation detection device； 2-
21-positive wire-outgoing breakers；2-22-cathode wire-outgoing breaker；2-23-outlet disconnecting switch；3-1-desulfurization security personnel MCC；
The first open frame circuit breaker of 3-2-；The second open frame circuit breaker of 3-3-；3-4-steam turbine security personnel MCC；3-5-third drawer type
Breaker；The 4th open frame circuit breaker of 3-6-；3-7-boiler security personnel MCC；The 5th open frame circuit breaker of 3-8-；3-9-the 6th
Open frame circuit breaker；3-10-PC sections of AC safety watl；The 7th open frame circuit breaker of 3-11-；3-12-the 8th drawer type open circuit
Device；3-13-security personnel become；The 9th open frame circuit breaker of 3-14-；The tenth open frame circuit breaker of 3-15-；3-16-diesel generation
Unit；4-1-security personnel's battery group；The 7th breaker of 4-2-；The 8th breaker of 4-3-；4-4-direct current is ensured public security PC sections；4-
5-disconnecting switch.
Specific embodiment
Below by drawings and examples, the technical solution of the utility model is described in further detail.
As shown in Figure 1, to make station service spare for a kind of energy-storage battery based on thermal power plant's AGC frequency modulation provided by the utility model
System, including energy-storage system 1, main building direct current system 2, unit AC safety watl power-supply system 3 and unit direct current emergency power supply
System 4；
The energy-storage system 1 include the first breaker 1-1, dry-type transformer 1-2, bidirectional power conversion equipment (PCS,
Power Conversion System) 1-3, the second breaker 1-4, energy storage battery group 1-5, third breaker 1-6, first
Cable 1-7, the 4th breaker 1-8, the first chopper 1-9, the second cable 1-10, the 5th breaker 1-11, inverter 1-12,
Three cable 1-13, the 6th breaker 1-14 and the second chopper 1-15；The main building direct current system 2 includes monitoring system 2-
1, microcomputer direct current system monitoring device 2-2, direct current system battery group 2-3, the first dc circuit breaker 2-4, the second direct current interruption
Device 2-5, third dc circuit breaker 2-6, the 4th dc circuit breaker 2-7, positive interbus 2-8, cathode interbus 2-9, the
Five dc circuit breaker 2-10, the 6th dc circuit breaker 2-11, direct current system inverter 2-12, the 4th cable 2-13, the 5th cable
2-14, positive DC disconnecting switch 2-15, negative DC disconnecting switch 2-16, positive outlet bus 2-17, cathode outlet bus
2-18, arrester 2-19, busbar voltage and insulation detection device 2-20, positive wire-outgoing breaker 2-21, cathode wire-outgoing breaker
2-22 and outlet disconnecting switch 2-23；The unit AC safety watl power-supply system 3 includes desulfurization security personnel MCC3-1, the first drawer
Formula breaker 3-2, the second open frame circuit breaker 3-3, steam turbine security personnel MCC3-4, third open frame circuit breaker 3-5, the 4th drawer type
Breaker 3-6, boiler security personnel MCC3-7, the 5th open frame circuit breaker 3-8, the 6th open frame circuit breaker 3-9, AC safety watl PC
Section 3-10, the 7th open frame circuit breaker 3-11, the 8th open frame circuit breaker 3-12, security personnel become 3-13, the 9th open frame circuit breaker
3-14, the tenth open frame circuit breaker 3-15 and diesel generating set 3-16；The unit direct current emergency power supply system 4 includes security personnel
Battery group 4-1, the 7th breaker 4-2, the 8th breaker 4-3, direct current security personnel PC sections of 4-4 and disconnecting switch 4-5.
Wherein, the energy-storage system 1 is connected directly on high-voltage auxiliary bus；The main building direct current system 2 passes through the
Three dc circuit breaker 2-6 and the 4th dc circuit breaker 2-7 are connected on energy-storage system 1；The unit AC safety watl power-supply system 3
It is connected on energy-storage system 1 by the 7th open frame circuit breaker 3-11；The unit direct current emergency power supply system 4 is disconnected by the 8th
Road device 4-3 is connected on energy-storage system 1；Wherein, the energy storage battery group 1-5 passes sequentially through the second breaker 1-4, two-way function
Rate conversion equipment (PCS, Power Conversion System) 1-3, dry-type transformer 1-2 and the first breaker 1-1 is connected to
High-voltage auxiliary bus, while the energy storage battery group 1-5 passes sequentially through third breaker 1-6, the first cable 1-7, the 4th disconnected
The third dc circuit breaker 2-6 and the 4th dc circuit breaker 2-7 of road device 1-8, the first chopper 1-9 and main building direct current system 2
It is respectively connected to make backup power source on positive interbus 2-8 and cathode interbus 2-9, while the energy storage battery group 1-
5 pass sequentially through third breaker 1-6, the second cable 1-10, the 5th breaker 1-11, inverter 1-12 and unit AC safety watl
7th open frame circuit breaker 3-11 of power-supply system 3, which is connected on PC sections of 3-10 of AC safety watl, makees backup power source, the secondly storage
Energy storage device group 1-5 passes sequentially through third breaker 1-6, third cable 1-13, the 6th breaker 1-14, the second chopper 1-15
It is connected on PC sections of 4-4 of direct current security personnel with the 8th breaker 4-3 of unit direct current emergency power supply system 4 and makees backup power source.
The direct current system battery group 2-3 passes through the first dc circuit breaker 2-4, the second dc circuit breaker 2-5 company respectively
It is connected on positive interbus 2-8, cathode interbus 2-9, the microcomputer direct current system monitoring device 2-2 is except monitoring and transmits
Other than the information of monitoring system 2-1, the order that monitoring system 2-1 is sent to it can also be performed, so that the microcomputer direct current
The mould that system monitoring device 2-2 can carry out corresponding information enters, open into, output and communicate, the direct current system inverter 2-12
Positive interbus 2-8 is connected to by the 5th dc circuit breaker 2-10, the 6th dc circuit breaker 2-11 respectively and cathode is got in touch with
On bus on 2-9,2-9 passes through positive DC disconnecting switch 2- respectively on the anode interbus 2-8, cathode interbus
15, negative DC disconnecting switch 2-16 is connected on positive outlet bus 2-17, cathode outlet bus 2-18, while being passed through respectively
4th cable 2-13, the 5th cable 2-14 are connected on positive outlet bus 2-17, cathode outlet bus 2-18, the direct current feedback
Line passes sequentially through outlet disconnecting switch 2-23, positive wire-outgoing breaker 2-21, cathode wire-outgoing breaker 2-22 and is respectively connected to just
On pole outlet bus 2-17 and cathode outlet bus 2-18, the busbar voltage and insulation detection device 2-20 pass through arrester
2-19 is connected on positive outlet bus 2-17 and cathode outlet bus 2-18.
The security personnel become 3-13 and are connected to PC sections of 3-10 of AC safety watl, the diesel oil by the 8th open frame circuit breaker 3-12
Generating set 3-16 passes sequentially through the tenth open frame circuit breaker 3-15, the 9th open frame circuit breaker 3-16 is connected to AC safety watl PC
Section 3-10, the desulfurization security personnel MCC3-1 are connected to PC sections of common power supply desulfurization by the second open frame circuit breaker 3-3, simultaneously
PC sections of 3-10 of backup power source AC safety watl are connected to by the first open frame circuit breaker 3-2, the steam turbine security personnel MCC3-4 passes through
4th open frame circuit breaker 3-6 is connected to PC sections of common power supply steam turbine, while being connected to by third open frame circuit breaker 3-5 standby
Common electricity is connected to by the 6th open frame circuit breaker 3-9 with PC sections of 3-10 of power supply AC safety watl, the boiler security personnel MCC3-7
PC sections of source boiler, while PC sections of 3-10 of backup power source AC safety watl are connected to by the 5th open frame circuit breaker 3-8.
Security personnel's battery group 4-1 passes sequentially through the 7th breaker 4-2, direct current security personnel PC sections of 4-4 and disconnecting switch 4-5
It powers to direct current protective load.
As shown in Fig. 2, in the present embodiment, at the positive DC disconnecting switch 2-15, negative DC disconnecting switch 2-16
In closed state, busbar voltage and insulation detection device 2-20 detect positive outlet bus 2-17, cathode outlet bus 2-18
Upper equal no-voltage, i.e. the first dc circuit breaker 2-4, the second dc circuit breaker 2-5, the 5th dc circuit breaker 2-10 and the 6th direct current
Breaker 2-11 is in off-state, at this time puts into the energy storage battery group 1-5 in energy-storage system 1, straight as main building
The backup power source of streaming system 2, i.e. third breaker 1-6, the 4th breaker 1-8, third dc circuit breaker 2-6 and the 4th direct current are disconnected
Road device 2-7 is in closed state, the busbar voltage and insulation detection device 2-20 can detect positive outlet bus 2-17,
Voltage restores on cathode outlet bus 2-18.In actual use, when occurring, direct current system battery group 2-3 is standby for the utility model
It, can be by being closed third breaker 1-6, the 4th breaker 1-8, third dc circuit breaker 2-6 when with the problem of off-capacity
With the operation of the 4th dc circuit breaker 2-7, using energy storage battery group 1-5 as the spare investment of direct current system battery group 2-3,
To restore the power supply to main building direct current system 2.
As shown in figure 3, in the present embodiment, by taking the steam turbine ensures public security MCC3-4 as an example, the third open frame circuit breaker 3-5
And corresponding disconnecting switch be in closed state and steam turbine ensure public security MCC 3-4 decompression when, i.e. the 4th open frame circuit breaker 3-6, the 8th
Open frame circuit breaker 3-12, the 9th open frame circuit breaker 3-14 (or the tenth open frame circuit breaker 3-15) are in off-state；
Energy storage battery group 1-5 investment in the energy-storage system 1, as the backup power source of unit AC safety watl power-supply system 3, i.e., the
Three breaker 1-6, the 5th breaker 1-11 and the 7th open frame circuit breaker 3-11 are in closed state, and steam turbine is ensured public security at this time
MCC3-4 voltage restores.The utility model becomes 3-13 power-off and diesel generating set 3- in use, when occurring ensuring public security
16 startings are unsuccessful, problem that runing time is insufficient when, can by closure third breaker 1-6, the 5th breaker 1-11 and
Energy storage battery group 1-5 is become 3-13 and diesel generating set 3-16 by the operation of 7th open frame circuit breaker 3-11
Spare investment, to restore power supply to unit AC safety watl power-supply system 3.
As shown in figure 4, in the present embodiment, the direct current ensure public security PC section 4-4 decompressions when, i.e. the 7th breaker 4-2, which is in, to break
Open state；Energy storage battery group 1-5 investment in the energy-storage system 1, the standby electricity as unit direct current emergency power supply system 4
Source, i.e. third breaker 1-6, the 6th breaker 1-14 and the 8th breaker 4-3 are in closed state, and direct current is ensured public security at this time
PC sections of 4-4 voltages restore.The utility model in use, when occur ensure public security battery group 4-1 off-capacity the problem of when,
It can be by the operation of closure third breaker 1-6, the 6th breaker 1-14 and the 8th breaker 4-3, by energy storage battery group
Spare investment of the 1-5 as security personnel battery group 4-1, to restore the power supply to unit direct current emergency power supply system 4.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong to the protection scope of technical solutions of the utility model.
Claims (5)
1. a kind of energy-storage battery based on thermal power plant's AGC frequency modulation makees the spare system of station service, which is characterized in that including energy storage system
System (1), main building direct current system (2), unit AC safety watl power-supply system (3) and unit direct current emergency power supply system (4)；Its
In,
Energy-storage system (1) is connected directly on high-voltage auxiliary bus；Main building direct current system (2) is connected on energy-storage system (1)；
Unit AC safety watl power-supply system (3) is connected on energy-storage system (1)；Unit direct current emergency power supply system (4) is connected to energy storage
In system (1).
2. a kind of energy-storage battery based on thermal power plant's AGC frequency modulation according to claim 1 makees the spare system of station service,
It is characterized in that, energy-storage system (1) includes the first breaker (1-1), dry-type transformer (1-2), bidirectional power conversion equipment (1-
3), the second breaker (1-4), energy storage battery group (1-5), third breaker (1-6), the first cable (1-7), the 4th breaker
(1-8), the first chopper (1-9), the second cable (1-10), the 5th breaker (1-11), inverter (1-12), third cable
(1-13), the 6th breaker (1-14) and the second chopper (1-15)；Wherein,
Energy storage battery group (1-5) passes sequentially through the second breaker (1-4), bidirectional power conversion equipment (1-3), dry-type transformer
(1-2), the first breaker (1-1) are connected to high-voltage auxiliary bus.
3. a kind of energy-storage battery based on thermal power plant's AGC frequency modulation according to claim 2 makees the spare system of station service,
It is characterized in that, main building direct current system (2) includes monitoring system (2-1), microcomputer direct current system monitoring device (2-2), direct current system
Unite battery group (2-3), the first dc circuit breaker (2-4), the second dc circuit breaker (2-5), third dc circuit breaker (2-6),
4th dc circuit breaker (2-7), positive interbus (2-8), cathode interbus (2-9), the 5th dc circuit breaker (2-10),
6th dc circuit breaker (2-11), direct current system inverter (2-12), the 4th cable (2-13), the 5th cable (2-14), anode
Direct-current isolating switch (2-15), negative DC disconnecting switch (2-16), positive outlet bus (2-17), cathode outlet bus (2-
18), arrester (2-19), busbar voltage and insulation detection device (2-20), positive wire-outgoing breaker (2-21), cathode outlet are disconnected
Road device (2-22) and outlet disconnecting switch (2-23)；Wherein,
Direct current system battery group (2-3) is connected by the first dc circuit breaker (2-4), the second dc circuit breaker (2-5) respectively
To positive interbus (2-8) and cathode interbus (2-9), microcomputer direct current system monitoring device (2-2) is removed for monitoring
And other than the information of transmission monitor system (2-1), it is also used to execute the order that monitoring system (2-1) is sent to it, so that
The mould that the microcomputer direct current system monitoring device (2-2) is able to carry out corresponding information enters, open into, output and communicate, direct current system is inverse
Become device (2-12) and anode contact mother is connected to by the 5th dc circuit breaker (2-10) and the 6th dc circuit breaker (2-11) respectively
On line (2-8) and cathode interbus (2-9), positive interbus (2-8) and cathode interbus (2-9) pass through anode respectively
Direct-current isolating switch (2-15) and negative DC disconnecting switch (2-16) are connected to positive outlet bus (2-17) and cathode outlet
On bus (2-18), while positive outlet bus (2- is connected to by the 4th cable (2-13) and the 5th cable (2-14) respectively
17) and on cathode outlet bus (2-18), DC feeder passes sequentially through outlet disconnecting switch (2-23), positive wire-outgoing breaker
(2-21) and cathode wire-outgoing breaker (2-22) are respectively connected to positive outlet bus (2-17) and cathode outlet bus (2-18)
On, busbar voltage and insulation detection device (2-20) pass through arrester (2-19) and are connected to positive outlet bus (2-17) and cathode
On outlet bus (2-18)；
Energy storage battery group (1-5) passes sequentially through third breaker (1-6), the first cable (1-7), the 4th breaker (1-8),
One chopper (1-9) and the third dc circuit breaker (2-6) of main building direct current system (2), the 4th dc circuit breaker (2-7) are respectively
It is connected to positive interbus (2-8), makees backup power source on cathode interbus (2-9).
4. a kind of energy-storage battery based on thermal power plant's AGC frequency modulation according to claim 2 makees the spare system of station service,
It is characterized in that, unit AC safety watl power-supply system (3) includes desulfurization security personnel MCC (3-1), the first open frame circuit breaker (3-2), the
Two open frame circuit breakers (3-3), steam turbine security personnel MCC (3-4), third open frame circuit breaker (3-5), the 4th open frame circuit breaker
(3-6), boiler security personnel MCC (3-7), the 5th open frame circuit breaker (3-8), the 6th open frame circuit breaker (3-9), AC safety watl PC
Section (3-10), the 7th open frame circuit breaker (3-11), the 8th open frame circuit breaker (3-12), security personnel become (3-13), the 9th drawer
Formula breaker (3-14), the tenth open frame circuit breaker (3-15) and diesel generating set (3-16)；Wherein,
Security personnel become (3-13) and are connected to PC sections of AC safety watl (3-10) by the 8th open frame circuit breaker (3-12), diesel-driven generator
Group (3-16) passes sequentially through the tenth open frame circuit breaker (3-15), the 9th open frame circuit breaker (3-14) is connected to AC safety watl PC
Section (3-10), desulfurization security personnel MCC (3-1) are connected to PC sections of common power supply desulfurization by the second open frame circuit breaker (3-3), simultaneously
PC sections of backup power source AC safety watl (3-10) are connected to by the first open frame circuit breaker (3-2), steam turbine security personnel MCC (3-4) are logical
It crosses the 4th open frame circuit breaker (3-6) and is connected to PC sections of common power supply steam turbine, while even by third open frame circuit breaker (3-5)
PC sections of backup power source AC safety watl (3-10) are connected to, boiler security personnel MCC (3-7) pass through the 6th open frame circuit breaker (3-9) and connect
Extremely common PC sections of power supply boiler, while PC sections of (3- of backup power source AC safety watl are connected to by the 5th open frame circuit breaker (3-8)
10)；
Energy storage battery group (1-5) pass sequentially through third breaker (1-6), the second cable (1-10), the 5th breaker (1-11),
Inverter (1-12) and the 7th open frame circuit breaker (3-11) of unit AC safety watl power-supply system (3) are connected to AC safety watl PC
Make backup power source in section (3-10).
5. a kind of energy-storage battery based on thermal power plant's AGC frequency modulation according to claim 2 makees the spare system of station service,
It is characterized in that, unit direct current emergency power supply system (4) is broken including security personnel battery group (4-1), the 7th breaker (4-2), the 8th
Road device (4-3), direct current security personnel PC sections (4-4) and disconnecting switch (4-5)；Wherein,
Security personnel battery group (4-1) pass sequentially through the 7th breaker (4-2), direct current security personnel PC sections (4-4) and disconnecting switch (4-5)
It powers to direct current protective load；
Energy storage battery group (1-5) pass sequentially through third breaker (1-6), third cable (1-13), the 6th breaker (1-14),
Second chopper (1-15) and the 8th breaker (4-3) of unit direct current emergency power supply system (4) are connected to direct current and ensure public security PC sections
Make backup power source on (4-4).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825483A (en) * | 2022-06-29 | 2022-07-29 | 西安热工研究院有限公司 | Thermal power generating unit frequency modulation system, method and device |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825483A (en) * | 2022-06-29 | 2022-07-29 | 西安热工研究院有限公司 | Thermal power generating unit frequency modulation system, method and device |
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