A kind of electric heat-storage device configures system
Technical field
The utility model is related to electric power depth peak regulation design field, more particularly to the electric accumulation of heat peak adjusting device of cogeneration power plant
Arrangements design field.
Background technology
Cogeneration units " electricity determining by heat " mode is run, and peak modulation capacity is only 10% or so.Peak regulation difficulty has become electricity
Distinct issues the most in network operation.Contradiction processing between peak load regulation network and fired power generating unit heat supply is bad, may influence resident
Heat supply in winter safety, the relation people's livelihood.Cogeneration power plant is mainly 2 × 300MW grades of units at this stage, is adjusted to adapt to power network depth
Peak requirement, can configure the solid electric heat-storage device that multigroup 240 ~ 320MW of total capacity do not wait and completes peak load regulation.Solid electricity accumulation of heat
Peak adjusting device have high voltage, it is high-power, can accumulation of heat the characteristics of, but power is unadjustable.High-power electrode hot water boiler device sheet
Body does not possess heat accumulation function, but power can step-less adjustment.Due to the continuous real-time change of peak load regulation network load, it is therefore desirable to Neng Goulian
Send out load in continuous smooth, stable adjustment power plant.If simple use solid electric heat-storage device, because power bracket is non-adjustable
Section, it is impossible to which depth excavates the peak load regulation ability in power plant, influences peak regulation overall economy quality;It is simple to use electrode hot water boiler device
Although flexible operation, facilitate depth peak regulation, due to not possessing heat accumulation function, it is impossible to adapt to the need of resident's winter continuous heating
Ask, although some project configuration hot-water cylinder storages, but because hot-water cylinder heat storage capacity is limited, it is difficult to adapt to big district heating demand.
Utility model content
In order to overcome problems of the prior art, the utility model proposes the comparatively safe reliable, flexible operation of one kind
And to configuration system of the power plant construction condition without the electric accumulation of heat peak adjusting device excessively limited, realize that the intelligent depth of smoothness of power network is adjusted
Peak, reduces the impact to power network, had not only met the guarantee of the heat supply people's livelihood but also met peaking demand of power grid.
The utility model solves the technical scheme that is used of aforementioned technical problem:A kind of electric heat-storage device configures system,
Including peak regulation system, potential device and power network, the peak regulation system sets many sleeve solid electric heat-storage devices, at the same set it is a set of or
Many set liquid electric heat-storage devices, the solid electric heat-storage device and the liquid electric heat-storage device are connected by power network.
Preferably, it is overall using whole power plant as unit, an inlet wire interval is increased newly on the original bus of power plant, with drop
Pressure transformer is connected, and the step-down transformer other end is connected with peak regulation system bus, solid electric heat-storage device and liquid electric accumulation of heat dress
Put and be connected on peak regulation system bus.
Any of the above-described scheme is preferably, can be according to actual need between the liquid electric heat-storage device and peak regulation system bus
The step-down transformer matched with liquid electric heat-storage device supply voltage is set.
Any of the above-described scheme is preferably, and overall using every unit as unit, peak regulation system bus is through outlet breaker T
It is connected on the main enclosed busbar of generator outlet.
Any of the above-described scheme is preferably, and peak regulation system bus includes phaseisolated bus.
Any of the above-described scheme is preferably, through cable connection between each feeder cabinet to solid, liquid electric heat-storage device.
Any of the above-described scheme is preferably, and the solid electric heat-storage device is switched according to the supporting setting GIS of actual requirement of engineering
Equipment or bus switchgear.
Any of the above-described scheme is preferably, and increases inlet wire interval, transformer, GIS device, solid electric heat-storage device, liquid newly
Between electric heat-storage device steel-cored aluminium strand or cable connection are used according to actual requirement of engineering.
Any of the above-described scheme is preferably, 10 ~ 66kV of the solid electric heat-storage device voltage class ranges.
Any of the above-described scheme is preferably, 10 ~ 100MW of the solid electric heat-storage device power bracket.
Any of the above-described scheme is preferably, and the liquid electric heat-storage device includes high-power electrode water heater.
Any of the above-described scheme is preferably, 6 ~ 20kV of the liquid electric heat-storage device voltage class ranges.
Any of the above-described scheme is preferably, 0 ~ 50MW of the liquid electric heat-storage device power bracket.
Any of the above-described scheme is preferably, the liquid electric heat-storage device power can in the range of 0% ~ 100% step-less adjustment.
Electric heat-storage device of the present utility model configures system, configures many sleeve solid electric heat-storage devices as peak regulation main body, together
When configure one or more sets power bracket infinitely variable liquid electric heat-storage devices as the infinitely variable means of supplementing out economy,
On the premise of not increasing too many floor space, steam power plant's depth peak modulation capacity is improved, steam power plant's intelligence is added smooth deep
Spend the flexibility of peak regulation.
Solid, liquid electric heat-storage device in the utility model have may be selected for multiple voltage grade, adjust steam power plant
Peak device power supply (DPS) is a variety of to draw the scheme of connecing with a variety of, to power plant construction condition without excessive limitation, is conducive to more making full use of now
Have ready conditions and carry out peak regulation construction.
Electrical heating group is constituted using series-parallel system by multigroup resistance wire inside every sleeve solid electric heat-storage device at present, should
Electrical heating group is as start and stop unit Qi Tongting simultaneously, and start and stop capacity maximum can reach 100MW, and very big rush is caused to power network
Hit, influence the safe operation of power network.In view of this situation, this problem is solved using following several ways in the utility model.
1st, using slope boosting soft starter.The main composition of the soft starter be serially connected with power supply and electric heat-storage device it
Between three-phase inverse parallel high-pressure thyristor and its electronic control circuit.By controlling leading for its internal IGCT of soft-starter control
Current flow angle, makes electric heat-storage device input voltage be gradually increasing from zero with preset function relation, is started until being increased to after rated voltage
Terminate.The impact that electric heat-storage device accesses power network is reduced by the progressively pressure regulation of soft initiator.
2nd, using concatenation variable resistor reduced-voltage starting mode.Concatenated between power supply and solid electric heat-storage device a set of variable
Resistance starting cabinet, the variable resistor cabinet can be thermistor or liquid resistance.When solid electric heat-storage device accesses power network, press
Predetermined set resistance, the resistance of stepless control variable resistor, the proceed-to-send after resistance is close to 0, so that solid
The input voltage of electric heat-storage device is continuously increased, until rated voltage is reached, so as to avoid impact of the full voltage starting to power network.
Brief description of the drawings
Fig. 1 is one preferred for the of the present utility model electric heat-storage device configuration system overall using whole power plant as unit
The schematic diagram of embodiment.
Fig. 2 is another excellent for the of the present utility model electric heat-storage device configuration system overall using whole power plant as unit
Select the schematic diagram of embodiment.
Fig. 3 is one preferred for the of the present utility model electric heat-storage device configuration system overall using every unit as unit
The schematic diagram of embodiment.
Fig. 4 is another excellent for the of the present utility model electric heat-storage device configuration system overall using every unit as unit
Select the schematic diagram of embodiment.
Fig. 5 is that the slope for configuring system according to electric heat-storage device of the present utility model is boosted the one excellent of soft starter major loop
Select the structure chart of embodiment.
Fig. 6 is that the variable resistor for configuring system according to electric heat-storage device of the present utility model starts the one preferred of cabinet major loop
The structure chart of embodiment.
Diagram:
1-220/66kV step-down transformers, 2-66kV buses, 3- solid electric heat-storage devices, 4- liquid electric heat-storage devices, 5-
66/20kV step-down transformers, 6-220KV buses, 7-220/20kV step-down transformers, 8-20KV buses, 9- main transformers, 10-
Generator, the generators of 11- second, the generators of 12- first, the outlets of 13- first, the outlets of 14- second, 15-A phases, 16-B phases, 17-C
Phase, 18- slopes boosting soft starter, 19- variable resistors start cabinet.
Embodiment
In order to be further understood that the content of the invention of the present utility model, below in conjunction with specific embodiment to the utility model
It is described in more detail, embodiment only has exemplary effect to the utility model, without any restricted effect;
The insubstantial modifications that any those skilled in the art make on the basis of the utility model, should all belong to the utility model guarantor
The scope of shield.
Embodiment 1
As shown in figure 1, a kind of electric heat-storage device configuration system, including peak regulation system, potential device and power network, the peak regulation
System sets many sleeve solid electric heat-storage devices 3, while a set of liquid electric heat-storage device 4 is set, the He of solid electric heat-storage device 3
The liquid electric heat-storage device 4 is connected in parallel by power network.
The present embodiment is overall using whole power plant as unit, and electric heat-storage device supply voltage chooses 66kV grades, liquid electric
Regenerative apparatus 4 selects high-power electrode water heater.Increase an inlet wire interval newly on the original 220kV buses 6 of power plant, and through one
The pressure regulation of 220/66kV step-down transformers 1 for solid electric heat-storage device 3 to being used after 66kV, and electric heat-storage device is supporting on the spot to be set
66kV GIS switchgears, are switched as the normal start-up and shut-down control of electric heat-storage device.One 66/20kV step-down transformer 5 is separately set
Pressure regulation to power pole hot water boiler device after 20kV is used.220kV increase newly inlet wire interval, step-down transformer, 66kV GIS devices and
Between electric heat-storage device steel-cored aluminium strand or cable connection can be taken depending on engineering concrete condition.
In the present embodiment, cogeneration power plant installed capacity is 2 × 350MW, and electric heat-storage device is set according to technological requirement
Capacity is 320MW.According to allocation plan, a set of 50MW liquid electric heat-storage device 4 is set, four sets of capacity be respectively 50MW,
50MW, 85MW, 85MW solid electric heat-storage device 3.When changing such as peak load regulation network load in the range of no more than 50MW, it is only necessary to adjust
Whole electrode water boiler power output;As when peak load regulation network load, which is more than, to be changed in the range of 50MW, selective it can cut
Fall the solid electric heat-storage device 3 that one or more sets total capacities are not more than peak capacity, liquid electric heat-storage device 4 is then adjusted again defeated
Go out power to meet the requirement of Peak Load change.
The electric heat-storage device configuration system of the present embodiment, configures many sleeve solid electric heat-storage devices 3 as peak regulation main body, simultaneously
A set of power bracket infinitely variable liquid electric heat-storage device 4 is configured as the infinitely variable means of supplementing out economy, is not being increased
Plus on the premise of too many floor space, steam power plant's depth peak modulation capacity is improved, add the intelligent depth of smoothness peak regulation of steam power plant
Flexibility.Solid, liquid electric heat-storage device have may be selected for multiple voltage grade simultaneously, make steam power plant's peak regulation device power supply (DPS)
It is a variety of to draw the scheme of connecing with a variety of, to power plant construction condition without excessive limitation, be conducive to more making full use of existence conditions to carry out
Peak regulation is built.
Embodiment 2
As shown in Fig. 2 a kind of electric heat-storage device configuration system, including peak regulation system, potential device and power network, the peak regulation
System sets many sleeve solid electric heat-storage devices 3, while a set of liquid electric heat-storage device 4 is set, the He of solid electric heat-storage device 3
The liquid electric heat-storage device 4 is connected in parallel by power network.
The present embodiment is overall using whole power plant as unit, and liquid electric heat-storage device 4 selects high-power electrode water heater, Gu
Body electric heat-storage device 3 and electrode hot water boiler device supply voltage choose 20kV grades.It is new on the original 220kV buses 6 of power plant
Increase an inlet wire interval, and 20kV buses 8 are connected to after a pressure regulation of 220/20kV step-down transformers 7 to 20kV, be electric storage
Thermal is powered, electric heat-storage device supporting setting 20kV bus switchgears on the spot, is used as the normal start-up and shut-down control of electric heat-storage device
Switch.220kV is newly-increased to regard engineering concrete condition between inlet wire interval, step-down transformer, bus switchgear and electric heat-storage device
Steel-cored aluminium strand or cable connection can be taken.
In the present embodiment, cogeneration power plant installed capacity is 2 × 350MW, and electric heat-storage device is set according to technological requirement
Capacity is 320MW.According to allocation plan, a set of 50MW liquid electric heat-storage device 4 is set, four sets of capacity be respectively 50MW,
50MW, 85MW, 85MW solid electric heat-storage device 3.When changing such as peak load regulation network load in the range of no more than 50MW, it is only necessary to adjust
Whole electrode water boiler power output;As when peak load regulation network load, which is more than, to be changed in the range of 50MW, selective it can cut
Fall the solid electric heat-storage device 3 that one or more sets total capacities are not more than peak capacity, liquid electric heat-storage device 4 is then adjusted again defeated
Go out power to meet the requirement of Peak Load change.
The electric heat-storage device configuration system of the present embodiment, configures many sleeve solid electric heat-storage devices 3 as peak regulation main body, simultaneously
A set of power bracket infinitely variable liquid electric heat-storage device 4 is configured as the infinitely variable means of supplementing out economy, is not being increased
Plus on the premise of too many floor space, steam power plant's depth peak modulation capacity is improved, add the intelligent depth of smoothness peak regulation of steam power plant
Flexibility.Solid, liquid electric heat-storage device have may be selected for multiple voltage grade simultaneously, make steam power plant's peak regulation device power supply (DPS)
It is a variety of to draw the scheme of connecing with a variety of, to power plant construction condition without excessive limitation, be conducive to more making full use of existence conditions to carry out
Peak regulation is built.
Embodiment 3
As shown in figure 3, a kind of electric heat-storage device configuration system, including peak regulation system, potential device and power network, the peak regulation
System sets many sleeve solid electric heat-storage devices 3, while a set of liquid electric heat-storage device 4 is set, the He of solid electric heat-storage device 3
The liquid electric heat-storage device 4 is connected in parallel by power network.
The present embodiment is overall using every unit as unit, and electric heat-storage device voltage chooses 20kV grades, by 20kV buses 8
Power supply.Electric heat-storage device supporting setting 20kV bus switchgears on the spot, are used as the normal start-up and shut-down control switch of electric heat-storage device.Its
The general supply of 20kV buses 8, which can use phaseisolated bus and be connected on the outlet 20kV primary seals of generator 10 through the direct T of outlet breaker, closes mother
On line, electric current is output to power plant's power network through main transformer 9, and each feeder cabinet is to can be through cable connection between electric heat-storage device.
The electric heat-storage device configuration system of the present embodiment, configures many sleeve solid electric heat-storage devices 3 as peak regulation main body, simultaneously
A set of power bracket infinitely variable liquid electric heat-storage device 4 is configured as the infinitely variable means of supplementing out economy, is not being increased
Plus on the premise of too many floor space, steam power plant's depth peak modulation capacity is improved, add the intelligent depth of smoothness peak regulation of steam power plant
Flexibility.Solid, liquid electric heat-storage device have may be selected for multiple voltage grade simultaneously, make steam power plant's peak regulation device power supply (DPS)
It is a variety of to draw the scheme of connecing with a variety of, to power plant construction condition without excessive limitation, be conducive to more making full use of existence conditions to carry out
Peak regulation is built.
Embodiment 4
As shown in figure 4, a kind of electric heat-storage device configuration system, including peak regulation system, potential device and power network, the peak regulation
System sets many sleeve solid electric heat-storage devices 3, while setting two sets of liquid electric heat-storage devices 4, the He of solid electric heat-storage device 3
The liquid electric heat-storage device 4 is connected by power network.
The present embodiment is overall using every unit as unit, and liquid electric heat-storage device 4 selects high-power electrode water heater, Gu
Body electric heat-storage device sets supply voltage 66kV grades, electrode hot water boiler device voltage 20kV grades.The electric accumulation of heat of solid of full factory
Device supporting setting 66kV GIS switchgears on the spot, constitute 2 sections of a 66kV bus, power supply is through 220/66kV step-down transformers
2 are derived from power plant's booster stations bus;220kV buses 6, step-down transformer, 66kV GIS switchgears and solid electric heat-storage device 3 it
Between can take steel-cored aluminium strand or cable connection depending on engineering concrete condition.One of electrode hot water boiler device power supply use from
Phase bus is simultaneously connected on the main enclosed busbars of 20kV of the outlet 13 of the first generator 12 first, Ling Yi electricity through the direct T of outlet breaker
Very hot water stove device power supply uses phaseisolated bus and the 20kV master of the outlet 14 of the second generator 11 second is connected on through outlet breaker T
On enclosed busbar
In the present embodiment set two sets of 50MW electrode hot water boiler device, four sets of capacity be respectively 50MW, 50MW, 70MW,
70MW solid electric heat-storage device 3.When changing such as peak load regulation network load in the range of no more than 100MW, it is only necessary to adjust two sets of electricity
Very hot homogeneous solution-type reactor power output;As peak load regulation network load be more than 100MW in the range of change when, can selectivity cut away one
Set or many set total capacities are not more than the solid electric heat-storage device 3 of peak capacity, and a set of or two sets of liquid electrics are then adjusted again and are stored
The power output of thermal 4 come meet Peak Load change requirement.
The electric heat-storage device configuration system of the present embodiment, configures many sleeve solid electric heat-storage devices 3 as peak regulation main body, simultaneously
The many set power bracket infinitely variable liquid electric heat-storage devices 4 of configuration are not increasing as the infinitely variable means of supplementing out economy
Plus on the premise of too many floor space, steam power plant's depth peak modulation capacity is improved, add the intelligent depth of smoothness peak regulation of steam power plant
Flexibility.Solid, liquid electric heat-storage device have may be selected for multiple voltage grade simultaneously, make steam power plant's peak regulation device power supply (DPS)
It is a variety of to draw the scheme of connecing with a variety of, to power plant construction condition without excessive limitation, be conducive to more making full use of existence conditions to carry out
Peak regulation is built.
Embodiment 5
Electric heat-storage device configuration system is same as Example 2 in the present embodiment, except that, as shown in figure 5, there is provided
Boost soft starter 18 on slope.The main composition of the soft starter is that three be serially connected between power supply and electric heat-storage device are opposite simultaneously
Join high-pressure thyristor and its electronic control circuit.By controlling the angle of flow of its internal IGCT of soft-starter control, make electric storage
Thermal input voltage is gradually increasing from zero with preset function relation, until being increased to proceed-to-send after rated voltage.By soft
The progressively pressure regulation of starter come reduce electric heat-storage device access power network impact.
Embodiment 6
Electric heat-storage device configuration system is same as Example 4 in the present embodiment, except that, as shown in fig. 6, using string
Connect variable resistor reduced-voltage starting mode.A set of variable resistor is concatenated between power supply and solid electric heat-storage device and starts cabinet, this can
It can be thermistor or liquid resistance to become resistor box.When solid electric heat-storage device accesses power network, by predetermined set resistance, nothing
The resistance of level smooth adjustment variable resistor, the proceed-to-send after resistance is close to 0, so that the input of solid electric heat-storage device
Voltage is continuously increased, until rated voltage is reached, so as to avoid impact of the full voltage starting to power network.
Although the utility model, those skilled in the art have shown and described referring particularly to its preferred embodiment
It is appreciated that the various changes that can be made in form and details are new without departing from this practicality described in appended claims
The scope of type.It is described in detail above in association with specific embodiment of the utility model, but is not to limit of the present utility model
System.It is every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, still fall within this practicality
The scope of new technique scheme.