163 lines
8.6 KiB
Python
163 lines
8.6 KiB
Python
from config import pv_config, ess_config, grid_config
|
||
import pandas as pd
|
||
class EnergySystem:
|
||
def __init__(self, pv_type: pv_config, ess_type: ess_config, grid_type: grid_config):
|
||
self.pv = pv_type
|
||
self.ess = ess_type
|
||
self.grid = grid_type
|
||
self.day_generated = []
|
||
self.generated = 0
|
||
self.stored = 0
|
||
self.hour_stored = []
|
||
self.hour_stored_2 = []
|
||
self.afford = True
|
||
self.cost = self.ess.get_cost() + self.pv.get_cost()
|
||
self.overload_cnt = 0
|
||
self.spring_week_gen = []
|
||
self.summer_week_gen = []
|
||
self.autumn_week_gen = []
|
||
self.winter_week_gen = []
|
||
self.spring_week_soc = []
|
||
self.summer_week_soc = []
|
||
self.autumn_week_soc = []
|
||
self.winter_week_soc = []
|
||
self.factory_demand = []
|
||
self.buy_price_kWh = []
|
||
self.sell_price_kWh = []
|
||
self.pv_generated_kWh = []
|
||
self.grid_need_power_kW = []
|
||
self.time = []
|
||
self.ess_rest = 0
|
||
self.granularity = 4
|
||
self.season_step = self.granularity * 24 * 7 * 12
|
||
self.season_start= self.granularity * 24 * 7 * 2
|
||
self.week_length = self.granularity * 24 * 7
|
||
self.unmet = []
|
||
|
||
def get_cost(self):
|
||
return self.ess.get_cost()+self.pv.get_cost()
|
||
|
||
# 优先使用PV供电给工厂 - 如果PV输出能满足工厂的需求，则直接供电，多余的电能用来给ESS充电。
|
||
# PV不足时使用ESS补充 - 如果PV输出不足以满足工厂需求，首先从ESS获取所需电量。
|
||
# 如果ESS也不足以满足需求，再从电网获取 - 当ESS中的存储电量也不足以补充时，再从电网购买剩余所需电量。
|
||
def simulate(self, data, time_interval):
|
||
total_benefit = 0
|
||
total_netto_benefit = 0
|
||
total_gen = 0
|
||
net_grid = 0.
|
||
for index, row in data.iterrows():
|
||
time = row['time']
|
||
self.time.append(time)
|
||
# sunlight_intensity = row['sunlight']
|
||
pv_yield = row['PV yield[kW/kWp]']
|
||
factory_demand = row['demand']
|
||
electricity_price = row['buy']
|
||
sell_price = row['sell']
|
||
# electricity_price = self.grid.get_price_for_time(time)
|
||
|
||
if time == '00:00':
|
||
self.day_generated.append(self.generated)
|
||
self.generated = 0
|
||
if time.endswith('14:00'):
|
||
soc = self.ess.storage / self.ess.capacity
|
||
self.hour_stored.append(soc)
|
||
if time.endswith('08:00'):
|
||
soc = self.ess.storage / self.ess.capacity
|
||
self.hour_stored_2.append(soc)
|
||
|
||
generated_pv_power = self.pv.capacity * pv_yield# 生成的功率，单位 kW
|
||
generated_pv_energy = generated_pv_power * time_interval * self.pv.loss # 生成的能量，单位 kWh
|
||
self.pv_generated_kWh.append(generated_pv_energy)
|
||
self.factory_demand.append(factory_demand)
|
||
self.buy_price_kWh.append(electricity_price)
|
||
self.sell_price_kWh.append(sell_price)
|
||
|
||
self.generated += generated_pv_energy
|
||
# pv生成的能量如果比工厂的需求要大
|
||
if generated_pv_energy >= factory_demand * time_interval:
|
||
# 剩余的能量(kwh) = pv生成的能量 - 工厂需求的功率 * 时间间隔
|
||
surplus_energy = generated_pv_energy - factory_demand * time_interval
|
||
# 要充到ess中的能量 = min(剩余的能量,ess的充电功率*时间间隔(ess在时间间隔内能充进的电量),ess的容量-ess储存的能量(ess中能冲进去的电量))
|
||
charge_to_ess = min(surplus_energy, self.ess.charge_power * time_interval, self.ess.capacity - self.ess.storage)
|
||
self.ess.storage += charge_to_ess
|
||
surplus_after_ess = surplus_energy - charge_to_ess
|
||
# 如果还有电量盈余,且pv功率大于ess的充电功率+工厂的需求功率则准备卖电
|
||
if surplus_after_ess > 0 and generated_pv_power > self.ess.charge_power + factory_demand:
|
||
sold_to_grid = surplus_after_ess
|
||
sell_income = sold_to_grid * sell_price
|
||
total_benefit += sell_income
|
||
# 节省的能量 = 工厂需求的能量 * 时间段
|
||
# total_energy = factory_demand * time_interval
|
||
saved_energy = factory_demand * time_interval
|
||
self.grid_need_power_kW.append(0)
|
||
# pv比工厂的需求小
|
||
else:
|
||
# 从ess中需要的电量 = 工厂需要的电量 - pv中的电量
|
||
needed_from_ess = factory_demand * time_interval - generated_pv_energy
|
||
# 如果ess中存的电量比需要的多
|
||
if self.ess.storage * self.ess.loss >= needed_from_ess:
|
||
# 取出电量
|
||
if self.ess.discharge_power * time_interval * self.ess.loss < needed_from_ess:
|
||
discharging_power = self.ess.discharge_power * time_interval
|
||
else:
|
||
discharging_power = needed_from_ess / self.ess.loss
|
||
|
||
self.ess.storage -= discharging_power
|
||
# 节省下来的能量 = pv的能量 + 放出来的能量
|
||
saved_energy = generated_pv_energy + discharging_power * self.ess.loss
|
||
self.grid_need_power_kW.append(0)
|
||
else:
|
||
# 如果存的电量不够
|
||
# 需要把ess中的所有电量释放出来
|
||
if self.grid.capacity * time_interval + generated_pv_energy + self.ess.storage * self.ess.loss < factory_demand * time_interval:
|
||
self.afford = False
|
||
self.overload_cnt+=1
|
||
log = f"index: {index}, time: {time}, SoC:{self.ess.storage / self.ess.capacity}%, storage: {self.ess.storage}, pv_gen:{generated_pv_power}, power_demand: {factory_demand}, overload_cnt:{self.overload_cnt}, day:{int(index/96) + 1}"
|
||
self.unmet.append((index,time,factory_demand,generated_pv_power))
|
||
# with open(f'plots/summary/ess-{self.ess.capacity}-pv-{self.pv.capacity}', 'a') as f:
|
||
# f.write(log)
|
||
# print(log)
|
||
# self.unmet.append(log)
|
||
saved_energy = generated_pv_energy + self.ess.storage * self.ess.loss
|
||
self.ess.storage = 0
|
||
needed_from_grid = factory_demand * time_interval - saved_energy
|
||
net_grid = min(self.grid.capacity * time_interval, needed_from_grid) * self.grid.loss
|
||
self.grid_need_power_kW.append(needed_from_grid * 4)
|
||
# grid_energy += net_grid
|
||
# total_energy += net_grid
|
||
# print(total_energy)
|
||
# 工厂需求量-总能量
|
||
# unmet_demand = max(0, factory_demand * time_interval - total_energy)
|
||
# benefit = (total_energy - unmet_demand) * electricity_price
|
||
total_gen += saved_energy
|
||
benefit = (saved_energy) * electricity_price
|
||
cost = net_grid * electricity_price
|
||
# print(f"time:{time} benefit: {benefit}, cost: {cost}")
|
||
total_netto_benefit += benefit
|
||
total_benefit += benefit - cost
|
||
# # spring
|
||
week_start = self.season_start
|
||
week_end = self.week_length + week_start
|
||
if index in range(week_start, week_end):
|
||
self.spring_week_gen.append(generated_pv_power)
|
||
self.spring_week_soc.append(self.ess.storage / self.ess.capacity)
|
||
self.ess_rest = self.ess.storage
|
||
# summer
|
||
# week_start += self.season_step
|
||
# week_end += self.season_step
|
||
# if index in range(week_start, week_end):
|
||
# self.summer_week_gen.append(generated_pv_power)
|
||
# self.summer_week_soc.append(self.ess.storage / self.ess.capacity)
|
||
# # autumn
|
||
# week_start += self.season_step
|
||
# week_end += self.season_step
|
||
# if index in range(week_start, week_end):
|
||
# self.autumn_week_gen.append(generated_pv_power)
|
||
# self.autumn_week_soc.append(self.ess.storage / self.ess.capacity)
|
||
# week_start += self.season_step
|
||
# week_end += self.season_step
|
||
# if index in range(week_start, week_end):
|
||
# self.winter_week_gen.append(generated_pv_power)
|
||
# self.winter_week_soc.append(self.ess.storage / self.ess.capacity)
|
||
|
||
return (total_benefit, total_netto_benefit, total_gen) |