modelLumpedGridGenerators
Extends from TransiEnt.Producer.Electrical.Base.PartialDispatchablePowerPlant (Abstract model of an electric power plant with a power setpoint input connector), TransiEnt.Producer.Electrical.Base.ControlPower.PartialBalancingPowerProvider (Abstract model of any kind of electric balancing power provider with statistics and control input).
Information
1. Purpose of model
Lumped model of a number of generators for the use in a non-detailed electric grid model (including primary and secondary control models).
2. Level of detail, physical effects considered, and physical insight
The model is a composition of a turbine model, an inertia model, a generator model with excitation system model and a primary controller.
See base classes TransiEnt.Producer.Electrical.Base.PartialDispatchablePowerPlant and for more information TransiEnt.Producer.Electrical.Base.ControlPower.PartialBalancingPowerProvider
3. Limits of validity
(no remarks)
4. Interfaces
P_el_set: input for electric power in [W] (setpoint for electric power)
P_SB_set: input for electric power in [W] (secondary balancing setpoint)
P_tie_set: input for electric power in [W] "Set point tie line power"
P_tie_is: input for electric power in [W] "Actual tie line power"
epp: active power port (choice of power port)
5. Nomenclature
(no remarks)
6. Governing Equations
(no remarks)
7. Remarks for Usage
(no remarks)
8. Validation
checked in TransiEnt.Grid.Electrical.LumpedPowerGrid.Check
9. References
(no remarks)
10. Version History
Model created by Pascal Dubucq (dubucq@tuhh.de) on 01.10.2014
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nSubgrids (from PartialElectricPowerPlant) | simCenter.iDetailedGrid | For calculation of statistics in subgrids (=1 local grid, e.g. hamburg, =2 surrounding grid, e.g. UCTE grid |
| Physical Constraints | |||
| Modelica.Units.SI.Power | P_el_n (from PartialElectricPowerPlant) | 300e6 | Nominal power of plant |
| SI.Power | P_n (from PartialBalancingPowerProvider) | 300e6 | Nominal power of plant |
| SI.Time | T_tc | simCenter.T_grid | Time constant of plant (For easy definition of J) |
| SI.Inertia | J | P_el_n*T_tc/(2*simCenter.f_n*Modelica.Constants.pi)^2 | Lumped moment of inertia of whole power plant |
| Statistics | |||
| Modelica.Units.SI.Efficiency | eta_total (from PartialElectricPowerPlant) | 0.6 | Total efficiency of plant for emission calculation |
| EnergyResource | typeOfResource (from PartialElectricPowerPlant) | EnergyResource.Conventional | Type of energy resource for global model statistics |
| PrimaryEnergyCarrier | typeOfPrimaryEnergyCarrier (from PartialElectricPowerPlant) | PrimaryEnergyCarrier.BlackCoal | Type of primary energy carrier for co2 emissions global statistics |
| Boolean | integrateElPower (from PartialElectricPowerPlant) | simCenter.integrateElPower | true if electric powers shall be integrated |
| Boolean | integrateCDE (from PartialElectricPowerPlant) | simCenter.integrateCDE | true if CDE shall be integrated |
| Boolean | calculateCost (from PartialElectricPowerPlant) | simCenter.calculateCost | true if costs shall be calculated |
| EnergyResource | typeOfBalancingPowerResource (from PartialBalancingPowerProvider) | EnergyResource.Conventional | Type of energy resource for global model statistics |
| Integer | nSubgrid | 2 | Index of subgrid for moment of inertia statistics |
| Block control › Frequency Control | |||
| Boolean | isPrimaryControlActive (from PartialBalancingPowerProvider) | true | |
| Boolean | isSecondaryControlActive (from PartialBalancingPowerProvider) | false | |
| Boolean | isExternalSecondaryController (from PartialBalancingPowerProvider) | true | False, provider generates its own control setpoint (only for lumped plants) |
| SI.Time | t_SB_act (from PartialBalancingPowerProvider) | simCenter.t_SB_act | Maximum reaction time for SB |
| Modelica.Units.SI.Power | P_el_grad_max_SB (from PartialBalancingPowerProvider) | 0.02*P_n/60 | Maximum power gradient for secondary balancing (default: 2%/min) |
| Primary Frequency Control | |||
| Real | delta_pr | 0.2 | Value used if plantType is set to 'Provided' |
| Real | P_pr_grad_max_star | 0.02/30 | Two percent of design case power in 30s |
| Real | P_pr_max_star | 0.2 | Two percent of design case power |
| Real | k_pr | 1 | Participation factor primary control |
| Secondary Frequency Control | |||
| Real | P_sec_grad_max_star | 0.12/60 | Maximum secondary power gradient (= 12% in five Minutes) |
| Real | beta | 1 | Gain of secondary balancing power |
| Real | T_r | 20 | Time constant of secondary balancing power |
| Real | lambda_sec | 1 | Sub grid participation factor |
| Expert Settings | |||
| Boolean | fixedStartValue_w | false | Whether or not the start value of the angular velocity of the plants mechanical components is fixed |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.Electrical.ActivePowerPort | epp (from PartialElectricPowerPlant) | ||
| TransiEnt.Basics.Interfaces.Electrical.ElectricPowerIn | P_el_set (from PartialDispatchablePowerPlant) | Electric power setpoint | |
| TransiEnt.Basics.Interfaces.Electrical.ElectricPowerIn | P_SB_set (from PartialBalancingPowerProvider) | Secondary balancing setpoint | |
| TransiEnt.Basics.Interfaces.Electrical.ElectricPowerIn | P_tie_is | Actual tie line power | |
| TransiEnt.Basics.Interfaces.Electrical.ElectricPowerIn | P_tie_set | Set point tie line power |